Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107


Background


7753 1988 XB

1988 XB was discovered by Y. Yoshima in Japan on December 5, 1988. 

Its rotation period, lightcurve amplitude, and pole direction are unknown.  
1988 XB is an optically-dark B-class object.  

Arecibo radar observations in 2004 revealed a narrow bandwidth that suggests
a slow rotation of about 30-40 hours.  As such, the SNRs below probably significantly 
underestimate the SNRs at Goldstone in 2020. 

The Arecibo images have a bandwidth of about 1.4 Hz, show an irregular, lumpy shape,
and suggest a diameter of about 2 km. 

1988 XB will approach within 0.066 au on November 22 when SNRs at Goldstone
should be strong enough for imaging.

Observations are scheduled at Goldstone on 13 dates between November 17-December 1,
although time on many of those dates will be shared with 2000 WO107 and 2017 WJ16.

The track on November 17 has been repurposed to observe the Leonids meteor stream.

1988 XB is classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.


2017 WJ16 2017 WJ16 is a small object roughly 40 meters in diameter that will approach within 5.3 lunar distances (0.014 au) on November 24, 2020. This asteroid was discovered by the Mt. Lemmon Survey in Novemer, 2017. Most of its physical properties are unknown. Observations are scheduled at Goldstone on November 20-25. Orbital uncertainties are currently large and we need help with astrometry in order to observe it with radar. This object should be recovered in mid-November, so the orbital uncertainties are likely be small by the time of the Goldstone observations. ** UDPATE on 2020 Nov 17: New astrometry has reduced the uncertainties dramatically so that ** additional optical astrometry is no longer necessary to support the 2020 radar observations.
153201 2000 WO107 2000 WO107 is an X-class object discovered in November, 2000 by LINEAR. This object has an unusually low perihelion distance of only 0.20 au that is inside the orbit of Mercury. As such, general relativistic effects could become evident with ranging measurements over a long enough interval spanning a number of years. The close perihelion might also provide a potential probe of solar oblateness. 2000 WO107 also makes close approaches to Venus and Mercury, so disentangling these effects could be complicated. The rotation period, lightcurve amplitude, and pole direction are unknown. 2000 WO107 will approach within 0.029 au (11 lunar distances) on November 29, 2020. The SNRs should be strong enough for detailed delay-Doppler imaging at a resolution of 18.75 m/pixel. Goldstone observations are scheduled on November 27 - December 1, dates that straddle the closest approach. Observations by NASA's NEOWISE spacecraft indicate a diameter of 0.51 km and an optial albedo of 0.13. The X-spectral class is ambiguous: optically bright (E-class), moderately bright and metallic (M-class), and optically-dark (P-class) objects can all be included in the X-class in the absence of information about the albedo. The albedo of this object is available but is inconsistent with the highly-reflective E-class, so the implication is that this object is either in the M-class or the P-class. M-class objects are thought to be metallic, which are rare in the near-Earth population, so these observations have the potential to settle the important question regarding the composition of this object. If 2000 WO107 is actually metallic, then it could have an unusually high radar albedo and the signal-to-noise ratios could be substantially higher than the estimates below. The 2020 encounter is the closest by this asteroid until November, 2040, when it will approach within 0.021 au. Update on 2020 Dec. 4: Gianni Casalnuovo reports a rotation period of 4.8 hours and a lightcurve amplitude of 1.4 mag for 2000 WO107. 2000 WO107 is classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics  
Name                     1988 XB                  2017 WJ16            2000 WO107
Asteroid number          7753                     Not numbered         153201
Discoverer               Y. Oshima                Mt. Lemmon Survey    LINEAR
Discovery date           1988 Dec 05              2017 Nov 25          2000 Nov 29
orbit type               Apollo                   Aten                 Aten
Close approach dist.     0.066 au                 0.014 au             0.029 au
Close approach dist.     25.8 LD                  5.3 LD               11.3 LD
Close approach date      2020 Nov 22              2020 Nov 24          2020 Nov 29
LD = lunar distance
semimajor axis           1.468 au                 0.824 au             0.912 au
eccentricity             0.482                    0.212                0.781
inclination              3.1 deg                  5.8 deg              7.8 deg
Orbital period           1.78 y                   0.75 y               0.87 y
perihelion distance      0.761 au                 0.649 au             0.200
aphelion distance        2.175 au                 0.999 au             1.623
MOID                     0.0066 au                0.0091 au            0.0031

absolute magnitude (H)   18.6                     24.3                 19.3
diameter                ~2 km                    ~40 meters            0.5 km
optical albedo           dark                     unknown              0.13
rotation period         ~30-40 h ?                unknown              4.802 h
lightcurve amplitude     unknown                  unknown              1.4 mag
pole direction           unknown                  unknown              unknown
spectral class           B                        unknown              X
PHA?                     Yes                      No                   Yes 

Last update: 2020 December 1


Goldstone Radar Data from Near-Earth Asteroid (7753) 1988 XB


  Echo power spectrum from 1988 XB obtained on November 18, 2020.  The resolution is 0.5 Hz.


  Delay-Doppler images of 1988 XB obtained on November 18-25, 2020.  The resolution is 75 m x 0.24 Hz.
  Range increases down and Doppler frequency increases to the right.


Goldstone Radar Data from Near-Earth Asteroid 2017 WJ16


  Echo power spectra from 2017 WJ16 obtained on November 20, 21, and 25, 2020.  The resolution is 2 Hz.


Goldstone Radar Data from Near-Earth Asteroid 2000 WO107


  Echo power spectra from 2000 WO107 obtained on November 27, 2020 using solution 116 (top)
  and solution 117 (bottom).  The resolution is 2 Hz.


  Delay-Doppler images of 2000 WO107 obtained on November 28, 2020.


  Delay-Doppler images of 2000 WO107 obtained on November 29, 2020.
  The sequences of images suggest a rotation period of about five hours.
  The bandwidths vary from about 17 to 8 Hz, establish an elongation close
  to 2:1, and imply lower bounds on the pole-on dimensions of at least
  0.82 x 0.38 km. 


  Delay-Doppler images of 2000 WO107 obtained on November 30, 2020.


Discovery M.P.E.C.

1988 XB
The discovery of 1988 XB was announced in an IAU Circular...that we haven't yet located.
 
2017 WJ16
2017 WJ16
https://www.minorplanetcenter.net/mpec/K17/K17WJ3.html

2000 WO107
2000 WO107
https://www.minorplanetcenter.net/mpec/K00/K00X08.html


SNR Calculations

1988 XB
Goldstone SNRs
SNRs assume Ptx = 450 kW, D = 1.8 km, P = 30 h, radar albedo = 0.1, Tsys = 17 K.

wk DOY  start date    window       RA, dec   dist   runs   SNR/day SNR/run
45 308 2020 Nov 03  17:38-22:04   224, -27  0.148     54      27      4
   309 2020 Nov 04  17:26-21:56   223, -27  0.142     57      33      5
   310 2020 Nov 05  17:14-21:48   221, -27  0.135     61      41      6
   311 2020 Nov 06  17:01-21:40   219, -26  0.128     65      50      7
   312 2020 Nov 07  16:46-21:32   218, -26  0.122     70      63      8
   313 2020 Nov 08  16:31-21:24   216, -25  0.116     76      78     10
46 314 2020 Nov 09  16:14-21:15   213, -25  0.110     82      98     12
   315 2020 Nov 10  15:56-21:06   211, -24  0.105     90     120     14
   316 2020 Nov 11  15:36-20:57   208, -23  0.099     98     160     17
   317 2020 Nov 12  15:15-20:48   205, -22  0.094    107     200     21
   318 2020 Nov 13  14:52-20:38   202, -21  0.089    117     260     26
   319 2020 Nov 14  14:28-20:28   199, -20  0.085    129     320     31
   320 2020 Nov 15  14:02-20:18   195, -18  0.081    141     410     38
47 321 2020 Nov 16  13:34-20:07   192, -16  0.077    155     510     45
   322 2020 Nov 17  13:05-19:56   187, -14  0.074    169     630     53
   323 2020 Nov 18  12:35-19:44   183, -12  0.071    183     760     62  Scheduled
   324 2020 Nov 19  12:03-19:31   179, -10  0.069    197     900     70  Scheduled
   325 2020 Nov 20  11:31-19:18   174,  -7  0.068    211    1000     77  Scheduled
   326 2020 Nov 21  10:58-19:05   169,  -4  0.067    223    1100     82  Scheduled
   327 2020 Nov 22  10:26-18:51   164,  -1  0.066    233    1200     85  Scheduled
48 328 2020 Nov 23  09:53-18:37   159,  +2  0.066    240    1200     84
   329 2020 Nov 24  09:22-18:22   155,  +5  0.067    245    1200     80  Scheduled
   330 2020 Nov 25  08:52-18:07   150,  +7  0.069    246    1100     74  Scheduled
   331 2020 Nov 26  08:23-17:52   145, +10  0.071    245     980     67   THANKSGIVING
   332 2020 Nov 27  07:55-17:38   141, +12  0.073    242     860     59  Scheduled
   333 2020 Nov 28  07:29-17:23   137, +14  0.076    237     740     52  Scheduled
   334 2020 Nov 29  07:05-17:09   133, +16  0.080    231     620     44  Scheduled
49 335 2020 Nov 30  06:42-16:56   130, +18  0.084    223     520     38  Scheduled
   336 2020 Dec 01  06:21-16:43   126, +19  0.088    215     430     32  Scheduled
   337 2020 Dec 02  06:01-16:30   123, +21  0.092    207     360     27  Overlaps 2018 PK21
   338 2020 Dec 03  05:42-16:17   121, +22  0.097    199     290     22  Overlaps 2018 PK21
   339 2020 Dec 04  05:25-16:06   118, +23  0.102    191     240     19
   340 2020 Dec 05  05:09-15:54   115, +23  0.107    183     200     16  Overlaps 2018 PK21
   341 2020 Dec 06  04:54-15:43   113, +24  0.112    175     160     13
50 342 2020 Dec 07  04:39-15:33   111, +25  0.118    168     130     11  Overlaps 2018 PK21
   343 2020 Dec 08  04:26-15:22   109, +25  0.123    161     110     10  Overlaps 2018 PK21
   344 2020 Dec 09  04:13-15:12   107, +26  0.129    154      93      8  Overlaps 2018 PK21
   345 2020 Dec 10  04:02-15:03   106, +26  0.135    147      77      7  Overlaps 2018 PK21
   346 2020 Dec 11  03:50-14:54   104, +27  0.142    141      65      6  Partially overlaps 2018 PK21
   347 2020 Dec 12  03:39-14:45   102, +27  0.148    136      55      5  Overlaps 2018 PK21 and Ryugu
   348 2020 Dec 13  03:29-14:36   101, +27  0.154    130      46      4
51 349 2020 Dec 14  03:19-14:28   100, +28  0.161    125      39      4
   350 2020 Dec 15  03:10-14:20    99, +28  0.168    120      33      3
   351 2020 Dec 16  03:01-14:12    98, +28  0.175    116      28      3  Partially overlaps Ryugu

Goldstone should have two klystrons and full power in time for these observations.


1988 XB ARECIBO SNRs
Arecibo SNRs assume P = 2.2 h and D = 1.1 km
 start date    window       RA, dec   dist   runs  SNR/day SNR/run
2020 Nov 23  10:17-11:36   160,  +1  0.066    36    1200     220
2020 Nov 24  09:39-11:28   155,  +4  0.067    50    1600     250
2020 Nov 25  09:06-11:16   151,  +7  0.068    58    1600     230
2020 Nov 26  08:37-11:00   146,  +9  0.070    62    1600     210
2020 Nov 27  08:12-10:44   142, +12  0.073    64    1400     180
2020 Nov 28  07:49-10:26   138, +14  0.076    64    1200     160
2020 Nov 29  07:27-10:09   134, +16  0.079    62    1000     140
2020 Nov 30  07:08-09:52   130, +18  0.083    58     860     120
2020 Dec 01  06:50-09:35   127, +19  0.087    54     700      99
2020 Dec 02  06:34-09:18   124, +20  0.091    54     590      84
2020 Dec 03  06:19-09:03   121, +21  0.096    52     490      70
2020 Dec 04  06:05-08:48   118, +22  0.101    49     400      59
2020 Dec 05  05:51-08:33   116, +23  0.106    46     320      50
2020 Dec 06  05:39-08:19   113, +24  0.111    43     260      42
2020 Dec 07  05:27-08:06   111, +25  0.117    41     220      35
2020 Dec 08  05:16-07:54   109, +25  0.123    39     180      30
2020 Dec 09  05:05-07:42   107, +26  0.129    36     150      25
2020 Dec 10  04:55-07:30   106, +26  0.135    34     120      22
2020 Dec 11  04:46-07:20   104, +27  0.141    33     100      19
2020 Dec 12  04:36-07:09   103, +27  0.147    31      84      16
2020 Dec 13  04:27-06:59   101, +27  0.153    29      71      14
2020 Dec 14  04:19-06:50   100, +27  0.160    28      60      12
2020 Dec 15  04:10-06:40    99, +28  0.167    27      50      10
2020 Dec 16  04:02-06:32    98, +28  0.174    26      43       9
2020 Dec 17  03:54-06:23    97, +28  0.181    24      36       8
2020 Dec 18  03:47-06:15    96, +28  0.188    23      31       7

Arecibo SNRs assume Ptx = 900 kW, Tsys = 25 K, and D = 1.1 km.  This does not
account for the reduction in gain due to damaged sustained from Hurricane Maria
or from lower transmitter powers most recently in use.

Arecibo is offline due to cable failures in August and November, 2020, and observations
there will not be possible for any of these asteroids.


2017 WJ16 Goldstone SNRs Assumptions: D = 0.04 km, P = 0.5 h, OC albedo = 0.1, Ptx = 440 kW, Tsys = 17 K w DOY start date window RA, dec dist runs SNR/day SNR/run 47 322 2020 Nov 17 07:58-17:14 129, +7 0.022 751 47 2 47 323 2020 Nov 18 07:34-17:11 126, +11 0.020 860 70 3 47 324 2020 Nov 19 07:07-17:08 123, +15 0.018 991 110 4 47 325 2020 Nov 20 06:34-17:03 119, +21 0.017 1145 160 5 Scheduled el > 75 deg: 1110-1155 47 326 2020 Nov 21 05:55-16:55 114, +28 0.015 1320 230 7 Scheduled el > 75 deg: 1000-1205 47 327 2020 Nov 22 05:07-16:42 107, +35 0.014 1503 320 9 Scheduled el > 75 deg: 0910-1135 48 328 2020 Nov 23 04:07-16:21 98, +43 0.014 1671 390 10 el > 75 deg: 0825-1035 48 329 2020 Nov 24 02:54-15:48 86, +50 0.014 1794 420 11 el > 75 deg: 0800-0850 48 330 2020 Nov 25 01:29-14:59 70, +55 0.014 1839 380 10 Scheduled 48 331 2020 Nov 26 00:02-13:55 53, +58 0.015 1787 310 8 48 331-332 2020 Nov 26-27 22:48-12:48 37, +58 0.016 1654 220 6 48 332-333 2020 Nov 27-28 21:53-11:48 24, +57 0.018 1483 150 4 48 333-334 2020 Nov 28-29 21:15-10:57 14, +54 0.019 1314 100 3 48 334-335 2020 Nov 29-30 20:49-10:17 6, +52 0.021 1163 69 2 JPL/Horizons solution 6 (2020 Nov 17, after a dramatic reduction in uncertainties) Some of the rise-set times changed by >40 minutes but these do not conflict with the existing schedule. 2017 WJ16 Arecibo SNRs JPL/Horizons solution 5. Rise-set times will differ somewhat with subsequent solutions. start date window RA, dec dist runs SNR/day SNR/run 2020 Nov 15 09:15-09:53 131, -1 0.026 46 29 4 2020 Nov 16 08:38-10:06 129, +2 0.023 115 86 9 2020 Nov 17 08:10-10:09 127, +5 0.021 180 180 15 2020 Nov 18 07:43-10:05 124, +9 0.019 240 310 22 2020 Nov 19 07:17-09:55 121, +14 0.017 283 510 32 2020 Nov 20 06:51-09:34 116, +20 0.015 332 790 46 2020 Nov 21 06:29-08:58 110, +27 0.014 328 1100 64 2020 Nov 22 06:19-07:51 102, +35 0.013 219 860 66 Arecibo SNRS assume Ptx = 600 kW and gain = 7 k/Jy
2000 WO107 Goldstone SNRs 2000 WO107: D = 0.51 km, P = 2.2 h, OC albedo = 0.1 Tsys = 17.0 K, P = 440 kW, elev >= 20.00 deg w DOY start date window RA, dec dist runs SNR/day SNR/run 48 329 2020 Nov 24 12:42-19:54 191, -12 0.072 184 30 2 48 330 2020 Nov 25 12:10-19:37 186, -9 0.059 233 69 5 48 331 2020 Nov 26 11:26-19:13 178, -6 0.047 307 180 11 Thanksgiving 48 332 2020 Nov 27 10:20-18:36 166, 0 0.037 422 490 26 Scheduled 48 333 2020 Nov 28 08:45-17:37 147, +8 0.030 565 1200 52 Scheduled Overlaps SRT & Cebreros 48 334 2020 Nov 29 06:41-16:14 123, +18 0.029 644 1400 61 Scheduled el > 75 deg: none Overlaps SRT & Cebreros 49 335 2020 Nov 30 04:40-14:49 98, +23 0.033 584 820 37 Scheduled el > 75 deg: 0900-1025 49 336 2020 Dec 01 03:13-13:44 81, +25 0.042 469 320 16 Scheduled el > 75 deg: 0735-0920 49 337 2020 Dec 02 02:18-12:59 69, +25 0.053 371 130 7 el > 75 deg: 0650-0830 49 338 2020 Dec 03 01:43-12:27 62, +25 0.066 300 55 3 49 339 2020 Dec 04 01:19-12:04 57, +24 0.079 248 27 2 2000 WO107 Arecibo SNRs start date window RA, dec dist runs SNR/day SNR/run 2020 Nov 28 08:58-11:01 151, +7 0.031 131 4000 380 2020 Nov 29 07:02-09:34 126, +17 0.029 176 6100 490 2020 Nov 30 05:17-07:51 101, +23 0.033 153 3700 320 2020 Dec 01 03:59-06:32 83, +25 0.041 119 1500 140 2020 Dec 02 03:06-05:41 70, +25 0.052 93 570 63 2020 Dec 03 02:30-05:07 63, +25 0.064 76 250 30 2020 Dec 04 02:04-04:44 58, +24 0.077 63 120 16 2020 Dec 05 01:45-04:26 54, +24 0.091 54 62 9 2020 Dec 06 01:30-04:12 51, +23 0.105 47 35 5 2020 Dec 07 01:18-04:00 49, +23 0.119 41 21 3 Arecibo SNRs assume Ptx = 600 kW and gain = 7 K/Jy

Track Assignments


DOY  BOA   BOT   EOT   EOA
322  1135  1305  1430  1500  DSS-14 Leonids meteor stream (changed from 1988 XB)
323  1105  1235  1425  1455  DSS-14 1988 XB
324  1030  1200  1530  1400  DSS-14 1988 XB
325  1005  1135  1405  1435  DSS-14 2017 WJ16 and 1988 XB
326  1020  1150  1415  1445  DSS-14 2017 WJ16 and 1988 XB
327  1005  1135  1410  1440  DSS-14 2017 WJ16 and 1988 XB
329  1010  1140  1530  1600  DSS-14 1988 XB
330  0520  0650  1330  1400  DSS-14 2017 WJ16 and 1988 XB  (2020 SO overlap)
331  1025  1155  1355  1425  DSS-14 1988 XB     CANCELLED: THANKSGIVING
332  0910  1040  1405  1435  DSS-14 2000 WO107 and 1988 XB (2020 SO overlap)
333  0750  0920  1345  1415  DSS-14 2000 WO107 and 1988 XB (2020 SO overlap)
334  0730  0900  1400  1430  DSS-14 2000 WO107 and 1988 XB (2020 SO overlap)
334        1545  1915        DSS-35 2020 SO and 2000 WO107             AUSTRALIA 
334        1725  2005        DSS-36 2000 WO107                         AUSTRALIA
335  0330  0500  1340  1410  DSS-14 2000 WO107, 1988 XB, and 2020 SO
335  0330  0500  1340  1410  DSS-13 2020 SO
335        1345  2025        DSS-35 2020 SO and 2000 WO107             AUSTRALIA
336  0950  1120  1335  1405  DSS-14 2000 WO107 and 1988 XB

Goldstone tracks:
     UT                 UT          PST                  Duration Round-trip     
DOY  Date    Target     TX Window   TX Window            hh:mm    time (sec)   SNR/RTT  
322  Nov 17  1988 XB    1305-1430   0505-0630 Nov 17      1:25       74          56    Changed to the Leonids meteor stream

323  Nov 18  1988 XB    1235-1425   0435-0625 Nov 18      1:50       71          64   MB

324  Nov 19  1988 XB    1200-1530   0400-0730 Nov 19      3:30       69          72  SN

325  Nov 20  2017 WJ16  1135-1405   0335-0605 Nov 20      2:30       15           3  SN
325  Nov 20  1988 XB    1135-1405   0335-0605 Nov 20      2:30       68          80  SN

326  Nov 21  2017 WJ16  1150-1415   0350-0615 Nov 21      2:25       14           4  MB
326  Nov 21  1988 XB    1150-1415   0350-0615 Nov 21      2:25       67          88  MB

327  Nov 22  2017 WJ16  1135-1410   0335-0610 Nov 22      2:35       13           5  MB
327  Nov 22  1988 XB    1135-1410   0335-0610 Nov 22      2:35       66          88  MB

329  Nov 24  1988 XB    1140-1530   0340-0730 Nov 24      3:50       67          80  SN
 
330  Nov 25  2017 WJ16  0650-1330   2250-0530 Nov 24-25   6:40       14           4  SN
330  Nov 25  1988 XB    0855-1330   0055-0530 Nov 25      4:35       69          80  SN  Overlaps 2017 WJ16
330  Nov 25  2020 SO    0650-1120   2250-0320 Nov 24-25   4:30        4           8  SN  Bistatic SNR; DSS-13 not scheduled

331  Nov 26  1988 XB    1155-1355   0355-0555 Nov 26      2:00       71           9     THANKSGIVING: CANCELLED

332  Nov 27  2000 WO107 1040-1405   0240-0605 Nov 27      3:35       37          26  LB
332  Nov 27  1988 XB    1040-1405   0240-0605 Nov 27      3:35       73          64  LB Overlaps 2000 WO107
332  Nov 27  2020 SO    1040-1125   0240-0325 Nov 27      0:45        3          22  LB Bistatic SNR; DSS-13 not scheduled

333  Nov 28  2000 WO107 0920-1345   0120-0545 Nov 28      4:25       30          52  MB
333  Nov 28  1988 XB    0920-1345   0120-0545 Nov 28      4:25       76          56  MB Overlaps 2000 WO107
333  Nov 28  2020 SO    0920-1205   0120-0405 Nov 28      2:45        3          42  MB Bistatic SNR; DSS-13 not scheduled

334  Nov 29  2000 WO107 0900-1400   0100-0600 Nov 29      5:00       29          60  LB
334  Nov 29  1988 XB    0900-1400   0100-0600 Nov 29      5:00       80          48  LB Overlaps 2000 WO107
334  Nov 29  2020 SO    0900-1245   0100-0445 Nov 29      3:45        2         120  LB Bitatic SNR; DSS-13 not scheduled

335  Nov 30  2000 WO107 0500-1340   2100-0540 Nov 29-30   8:40       33          36  LB
335  Nov 30  1988 XB    0645-1340   2245-0540 Nov 29-30   6:55       84          40  LB Overlaps 2000 WO107
335  Nov 30  2020 SO    0500-1340   2100-0540 Nov 29-30   8:40        1        3100  LB Monostatic SNR
335  Nov 30  2020 SO    0500-1340   2100-0540 Nov 29-30   8:40        1         770  LB Bistatic SNR: Receive at DSS-13.  SCHEDULED

336  Dec 01  2000 WO107 1120-1335   0320-0535 Dec 01      2:15       42          16  LB
336  Dec 01  1988 XB    1120-1335   0320-0535 Dec 01      2:15       88          32  LB Overlaps 2000 WO107


Arecibo tracks:
UT                      UT          PST                Round-trip  
Date                    TX Window   TX Window          time (sec)  

...Not scheduled at Arecibo due to cable failures in August and November, 2020...



Uncertainties

1988 XB
JPL/Horizons solution 171, # obs: 999 (1988-2020) 
2020 Sep 29
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2020-Nov-15 00:00 *m  198.02114 -19.20356 0.08389189830560      1.109        0.94        3.42       0.000094
 2020-Nov-16 00:00 *m  194.29298 -17.57514 0.07988035544411      1.136        0.98        3.56       0.000129
 2020-Nov-17 00:00 *m  190.30028 -15.70995 0.07629629519435      1.150        1.00        3.65       0.000165
 2020-Nov-18 00:00 *m  186.05444 -13.59883 0.07318589844830      1.145        1.01        3.68       0.000202
 2020-Nov-19 00:00 *m  181.57813 -11.24482 0.07059660514697      1.119        0.99        3.61       0.000238
 2020-Nov-20 00:00 *m  176.90636  -8.66730 0.06857388170933      1.069        0.95        3.44       0.000274
 2020-Nov-21 00:00 *m  172.08629  -5.90464 0.06715711738414      0.994        0.87        3.16       0.000308
 2020-Nov-22 00:00 *m  167.17517  -3.01368 0.06637521519628      0.896        0.76        2.76       0.000338
 2020-Nov-23 00:00 *m  162.23678  -0.06536 0.06624278264666      0.781        0.63        2.28       0.000363
 2020-Nov-24 00:00 *m  157.33648   2.86338 0.06675790951567      0.659        0.48        1.75       0.000384
 2020-Nov-25 00:00 *m  152.53612   5.69911 0.06790219225775      0.541        0.33        1.21       0.000399
 2020-Nov-26 00:00 *m  147.88956   8.38041 0.06964301153563      0.438        0.19        0.70       0.000409
 2020-Nov-27 00:00 *m  143.43959  10.86319 0.07193740835655      0.363        0.07        0.26       0.000413
 2020-Nov-28 00:00 *m  139.21668  13.12194 0.07473656039976      0.324        0.05        0.17       0.000414
 2020-Nov-29 00:00 *m  135.23928  15.14786 0.07798993459452      0.319        0.13        0.46       0.000411
 2020-Nov-30 00:00 *   131.51524  16.94513 0.08164853977506      0.335        0.19        0.70       0.000405

- - - - - - - - - - 

2017 WJ16
JPL/Horizons soution 6, # obs: 65 (2017-2020)
2020 Nov 17
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2020-Nov-15 00:00     132.82903  -0.28268 0.02824621331065      0.508        0.23        0.83       0.000332
 2020-Nov-16 00:00     131.36656   2.17538 0.02591869825475      0.444        0.22        0.80       0.000325
 2020-Nov-17 00:00     129.59929   5.11325 0.02366105247117      0.438        0.22        0.81       0.000318
 2020-Nov-18 00:00     127.42856   8.65523 0.02149976123594      0.552        0.25        0.91       0.000311
 2020-Nov-19 00:00     124.71247  12.95058 0.01947120256373      0.810        0.32        1.15       0.000301
 2020-Nov-20 00:00     121.24185  18.15962 0.01762524714969      1.207        0.44        1.60       0.000290
 2020-Nov-21 00:00     116.70229  24.40730 0.01602871533858      1.737        0.62        2.27       0.000275
 2020-Nov-22 00:00     110.61885  31.67536 0.01476585433284      2.375        0.86        3.13       0.000254
 2020-Nov-23 00:00     102.29970  39.61896 0.01393018890948      3.038        1.11        4.03       0.000229
 2020-Nov-24 00:00      90.88299  47.38625 0.01360235773652      3.588        1.29        4.68       0.000202
 2020-Nov-25 00:00      75.81706  53.68423 0.01381931720369      3.894        1.32        4.79       0.000178
 2020-Nov-26 00:00      58.06102  57.35059 0.01455661819513      3.927        1.20        4.38       0.000164
 2020-Nov-27 00:00      40.57180  58.17709 0.01574047670584      3.762        1.01        3.66       0.000162
 2020-Nov-28 00:00      26.07668  56.99047 0.01727798687455      3.506        0.80        2.90       0.000168
 2020-Nov-29 00:00      15.21117  54.83923 0.01908214889302      3.234        0.62        2.25       0.000178
 2020-Nov-30 00:00       7.31057  52.42341 0.02108268439492      2.985        0.48        1.74       0.000189
 2020-Dec-01 00:00       1.52394  50.08280 0.02322682667174      2.771        0.38        1.40       0.000201
 2020-Dec-02 00:00     357.19485  47.94746 0.02547616058619      2.593        0.32        1.18       0.000212
New astrometry improved the orbit by orders of magnitude so that additional optical
astrometry is no longer necessary to support the 2020 radar observations.

JPL/Horizons solution 5,  # obs: 43 (35 days)
2020 Sep 29
 2020-Nov-15 00:00 *m  131.97136  -1.74233 0.02654249555532  19494.671     1142.90     4153.81       5.341342
 2020-Nov-16 00:00 *m  130.24379   0.77577 0.02420654908290  20779.601      754.51     2742.21       5.364592
 2020-Nov-17 00:00 *m  128.13551   3.82600 0.02194694913992  22745.423       71.34      259.30       5.365063
 2020-Nov-18 00:00 *m  125.51655   7.55651 0.01979447351965  25927.294     1110.88     4037.45       5.327371
 2020-Nov-19 00:00 *m  122.19776  12.14519 0.01779246993746  31122.494     3112.17    11311.05       5.226309
 2020-Nov-20 00:00 *m  117.89833  17.77497 0.01600165264875  39244.802     6367.12    23140.99       5.022516
 2020-Nov-21 00:00 *m  112.19867  24.55432 0.01450418829658  50821.176    11264.83    40941.50       4.660937
 2020-Nov-22 00:00 *m  104.48882  32.34100 0.01340193551069  65044.335    17633.18    64086.98       4.081833
 2020-Nov-23 00:00 *m   93.98440  40.48567 0.01279978980057  78877.910    24012.30    87271.59       3.256772
 2020-Nov-24 00:00 *m   80.05443  47.72496 0.01277010404743  87878.945    27914.11   101452.54       2.236771
 2020-Nov-25 00:00 *m   63.18475  52.63559 0.01331708602094  89363.634    27857.60   101247.17       1.153160
 2020-Nov-26 00:00 *m   45.77281  54.59448 0.01437453091381  84376.615    24693.78    89748.41       0.145016
 2020-Nov-27 00:00 *m   30.66821  54.18898 0.01583933986820  75981.523    20329.30    73885.91       0.709295
 2020-Nov-28 00:00 *m   19.01651  52.50418 0.01760851491127  66806.437    16135.91    58645.23       1.396174
 2020-Nov-29 00:00 *m   10.43641  50.36769 0.01959790035053  58259.318    12653.97    45990.28       1.936464
 2020-Nov-30 00:00 *     4.13051  48.21249 0.02174507073633  50841.719     9938.79    36122.08       2.360069
 2020-Dec-01 00:00 *   359.41656  46.21691 0.02400554342582  44599.462     7869.83    28602.55       2.694370
 2020-Dec-02 00:00 *   355.81282  44.43449 0.02634791603813  39403.722     6298.22    22890.57       2.961083

- - - - - - - - - - -

2000 WO107
JPL/Horizons solution 116, # obs: 440 (2000-2018)
2020 Sep 29
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2020-Nov-25 00:00 *m  189.76864 -10.97244 0.06741545289803      3.320        2.96       10.74       0.000231
 2020-Nov-26 00:00 *m  183.68968  -8.39896 0.05468247415791      3.978        4.14       15.06       0.000295
 2020-Nov-27 00:00 *m  174.32830  -4.19474 0.04306517044036      4.738        6.03       21.90       0.000436
 2020-Nov-28 00:00 *m  159.20777   2.86001 0.03372419205610      5.092        7.99       29.05       0.000668
 2020-Nov-29 00:00 *m  135.81485  13.00199 0.02895297022547      3.662        6.14       22.32       0.000920
 2020-Nov-30 00:00 *   108.12947  21.50393 0.03095394291262      2.041        2.76       10.01       0.000994
 2020-Dec-01 00:00 *    86.22119  24.71418 0.03870751606478      2.650        3.79       13.76       0.000900
 2020-Dec-02 00:00 *    72.37059  25.08014 0.04960426915575      2.706        3.24       11.78       0.000781
 2020-Dec-03 00:00 *    63.77991  24.65852 0.06202861184969      2.447        2.48        9.00       0.000685


Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination: 1988 XB Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2020-Nov-16 00:00 194.31835 -17.56017 0.07986473123811 20. n.a. 35.4845 /L 46.5/ 0.9479 2020-Nov-17 00:00 190.32591 -15.69450 0.07627857312556 19. n.a. 40.5302 /L 64.7/ 4.6639 2020-Nov-18 00:00 186.07996 -13.58277 0.07316608243205 19. n.a. 45.9722 /L 83.3/ 10.8345 2020-Nov-19 00:00 181.60309 -11.22799 0.07057475772091 18. n.a. 51.7871 /L 101.8/ 18.8668 2020-Nov-20 00:00 176.93029 -8.64954 0.06855013591959 17.414 n.a. 57.9320 /L 120.2/ 28.1324 2020-Nov-21 00:00 172.10869 -5.88579 0.06713168270130 16.942 n.a. 64.3415 /L 138.1/ 38.0548 2020-Nov-22 00:00 167.19560 -2.99365 0.06634837392056 16.542 n.a. 70.9289 /L 155.0/ 48.1500 2020-Nov-23 00:00 162.25482 -0.04412 0.06621487514572 16.211 n.a. 77.5914 /L 167.4/ 58.0290 2020-Nov-24 00:00 157.35186 2.88574 0.06672930993870 15.942 n.a. 84.2206 /L 161.6/ 67.3808 2020-Nov-25 00:00 152.54867 5.72239 0.06787327962943 15.731 n.a. 90.7137 /L 146.4/ 75.9488 2020-Nov-26 00:00 147.89924 8.40436 0.06961414255622 15.569 n.a. 96.9836 /L 130.1/ 83.5098 2020-Nov-27 00:00 143.44647 10.88749 0.07190889707992 15.450 n.a. 102.9653 /L 113.7/ 89.8600 2020-Nov-28 00:00 139.22092 13.14628 0.07470866710424 15.367 n.a. 108.6180 /L 97.4/ 94.8098 2020-Nov-29 00:00 135.24111 15.17196 0.07796286326145 15.314 n.a. 113.9228 /L 81.3/ 98.1857 2020-Nov-30 00:00 131.51491 16.96875 0.08162244183478 15.284 n.a. 118.8787 /L 65.5/ 99.8393 2020-Dec-01 00:00 128.04168 18.54968 0.08564207693980 15.273 n.a. 123.4971 /L 49.8/ 99.6593 2020-Dec-02 00:00 124.81440 19.93280 0.08998134391794 15.276 n.a. 127.7976 /L 34.3/ 97.5846 2020-Dec-03 00:00 121.82176 21.13839 0.09460514498860 15.290 n.a. 131.8040 /L 18.9/ 93.6156 2020-Dec-04 00:00 119.04983 22.18688 0.09948362776928 15.314 n.a. 135.5419 /L 3.872/ 87.8209 2020-Dec-05 00:00 116.48341 23.09771 0.10459180738788 15.343 n.a. 139.0365 /L 11.9/ 80.3429 2020-Dec-06 00:00 114.10696 23.88868 0.10990904500280 15.378 n.a. 142.3115 /L 27.1/ 71.4001 2020-Dec-07 00:00 111.90529 24.57562 0.11541848185835 15.415 n.a. 145.3889 /L 42.5/ 61.2929 2020-Dec-08 00:00 109.86395 25.17247 0.12110648649256 15.455 n.a. 148.2882 /L 58.0/ 50.4100 2020-Dec-09 00:00 107.96951 25.69127 0.12696214379848 15.497 n.a. 151.0267 /L 73.6/ 39.2368 2020-Dec-10 00:00 106.20962 26.14244 0.13297679604103 15.539 n.a. 153.6193 /L 89.4/ 28.3544 2020-Dec-11 00:00 104.57309 26.53491 0.13914363526102 15.582 n.a. 156.0785 /L 105.4/ 18.4194 2020-Dec-12 00:00 103.04984 26.87635 0.14545734215731 15.625 n.a. 158.4147 /L 121.5/ 10.1109 2020-Dec-13 00:00 101.63081 27.17333 0.15191376739646 15.667 n.a. 160.6362 /L 137.6/ 4.0429 2020-Dec-14 00:00 100.30790 27.43150 0.15850965556623 15.708 n.a. 162.7484 /L 153.6/ 0.6595 2020-Dec-15 00:00 99.07385 27.65574 0.16524241631702 15.748 n.a. 164.7545 /L 169.1/ 0.1504 2020-Dec-16 00:00 97.92213 27.85024 0.17210994767396 15.788 n.a. 166.6539 /L 174.2/ 2.4236 2020-Dec-17 00:00 96.84687 28.01864 0.17911051146206 15.826 n.a. 168.4409 /L 159.8/ 7.1476 2020-Dec-18 00:00 95.84275 28.16408 0.18624265300178 15.865 n.a. 170.1024 /L 145.3/ 13.8415 2020-Dec-19 00:00 94.90494 28.28931 0.19350515167559 15.904 n.a. 171.6127 /L 131.3/ 21.9735 2020-Dec-20 00:00 94.02906 28.39672 0.20089698852504 15.945 n.a. 172.9257 /L 117.8/ 31.0367 2020-Dec-21 00:00 93.21111 28.48838 0.20841732073160 15.994 n.a. 173.9643 /L 104.7/ 40.5890 2020-Dec-22 00:00 92.44745 28.56613 0.21606545772830 16.056 n.a. 174.6204 /L 91.9/ 50.2617 2020-Dec-23 00:00 91.73473 28.63157 0.22384083752329 16.137 n.a. 174.7957 /T 79.3/ 59.7476 2020-Dec-24 00:00 91.06990 28.68610 0.23174300390968 16.239 n.a. 174.4840 /T 66.9/ 68.7819 2020-Dec-25 00:00 90.45017 28.73098 0.23977158594137 16.355 n.a. 173.7891 /T 54.6/ 77.1206 2020-Dec-26 00:00 89.87295 28.76729 0.24792628097297 16.478 n.a. 172.8458 /T 42.3/ 84.5247 2020-Dec-27 00:00 89.33587 28.79601 0.25620684212647 16.603 n.a. 171.7579 /T 30.0/ 90.7513 2020-Dec-28 00:00 88.83675 28.81800 0.26461307046248 16.727 n.a. 170.5901 /T 17.7/ 95.5543 2020-Dec-29 00:00 88.37356 28.83402 0.27314481146599 16.848 n.a. 169.3809 /T 6.378/ 98.6948 2020-Dec-30 00:00 87.94442 28.84474 0.28180195474759 16.967 n.a. 168.1525 /T 9.664/ 99.9604 2020-Dec-31 00:00 87.54760 28.85076 0.29058443521327 17.084 n.a. 166.9183 /T 22.1/ 99.1908 - - - - - - - - - - 2017 WJ16 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2020-Nov-10 00:00 137.37788 -9.55615 0.03873768971550 20.488 n.a. 85.4921 /L 32.4/ 34.7085 2020-Nov-11 00:00 136.58710 -8.41277 0.03625378988451 20.268 n.a. 87.4896 /L 40.2/ 24.3122 2020-Nov-12 00:00 135.68552 -7.10091 0.03378106469703 20.034 n.a. 89.6607 /L 51.6/ 14.9954 2020-Nov-13 00:00 134.64520 -5.58071 0.03132615140416 19.784 n.a. 92.0466 /L 65.1/ 7.4590 2020-Nov-14 00:00 133.42959 -3.80025 0.02889787384791 19.515 n.a. 94.7004 /L 79.9/ 2.3479 2020-Nov-15 00:00 131.99004 -1.69145 0.02650807234837 19.225 n.a. 97.6907 /L 95.7/ 0.1220 2020-Nov-16 00:00 130.26046 0.83511 0.02417282612050 18.910 n.a. 101.1064 /L 112.1/ 0.9479 2020-Nov-17 00:00 128.14908 3.89612 0.02191428195544 18.569 n.a. 105.0608 /L 128.9/ 4.6639 2020-Nov-18 00:00 125.52534 7.64035 0.01976337147233 18.201 n.a. 109.6938 /L 146.1/ 10.8345 2020-Nov-19 00:00 122.19905 12.24630 0.01776366502682 17.805 n.a. 115.1630 /L 163.3/ 18.8668 2020-Nov-20 00:00 117.88771 17.89686 0.01597617938540 17.388 n.a. 121.6020 /L 171.4/ 28.1324 2020-Nov-21 00:00 112.16890 24.69882 0.01448343209549 16.968 n.a. 129.0016 /L 155.0/ 38.0548 2020-Nov-22 00:00 104.42836 32.50468 0.01338753938505 16.580 n.a. 136.9388 /L 134.6/ 48.1500 2020-Nov-23 00:00 93.87704 40.65556 0.01279327318082 16.284 n.a. 144.1442 /L 113.3/ 58.0290 2020-Nov-24 00:00 79.88583 47.87858 0.01277224623518 16.163 n.a. 148.3829 /L 92.3/ 67.3808 2020-Nov-25 00:00 62.96213 52.75107 0.01332753984084 16.266 n.a. 148.0073 /L 73.1/ 75.9488 2020-Nov-26 00:00 45.53530 54.66531 0.01439206532780 16.543 n.a. 144.0395 /T 57.6/ 83.5098 2020-Nov-27 00:00 30.45579 54.22520 0.01586243230443 16.901 n.a. 138.6883 /T 47.3/ 89.8600 2020-Nov-28 00:00 18.84358 52.51993 0.01763579084648 17.276 n.a. 133.3239 /T 43.9/ 94.8098 2020-Nov-29 00:00 10.29990 50.37313 0.01962828729902 17.641 n.a. 128.4537 /T 47.1/ 98.1857 2020-Nov-30 00:00 4.02266 48.21327 0.02177778499179 17.984 n.a. 124.1771 /T 54.5/ 99.8393 - - - - - - - - - - 2000 WO107 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2020-Nov-20 00:00 202.64034 -15.80857 0.13674282081450 22. 8. 31.8341 /L 94.8/ 28.1324 2020-Nov-21 00:00 201.16324 -15.30142 0.12247911329204 22. 8. 34.3251 /L 109.2/ 38.0548 2020-Nov-22 00:00 199.34235 -14.65516 0.10836271158783 21. 7. 37.1809 /L 123.5/ 48.1500 2020-Nov-23 00:00 197.02945 -13.80416 0.09442581051768 20. 7. 40.5619 /L 137.8/ 58.0290 2020-Nov-24 00:00 193.98414 -12.63719 0.08073021940943 20. 7. 44.7313 /L 152.3/ 67.3808 2020-Nov-25 00:00 189.79533 -10.95453 0.06739489209690 19. 7. 50.1468 /L 165.7/ 75.9488 2020-Nov-26 00:00 183.71998 -8.37651 0.05465925590515 17.709 6.502 57.6492 /L 165.5/ 83.5098 2020-Nov-27 00:00 174.36110 -4.16451 0.04303879132851 16.505 6.134 68.8392 /L 146.8/ 89.8600 2020-Nov-28 00:00 159.23631 2.90434 0.03369497252535 15.148 5.701 86.4998 /L 119.1/ 94.8098 2020-Nov-29 00:00 135.82031 13.06488 0.02892472381659 13.923 5.211 112.7486 /L 82.4/ 98.1857 2020-Nov-30 00:00 108.10103 21.56782 0.03093348178505 13.286 4.689 141.4293 /L 42.9/ 99.8393 2020-Dec-01 00:00 86.17963 24.76189 0.03869634612070 13.179 4.191 162.6631 /L 10.7/ 99.6593 2020-Dec-02 00:00 72.33143 25.11387 0.04959993404767 13.240 3.734 175.3908 /L 14.3/ 97.5846 2020-Dec-03 00:00 63.74637 24.68341 0.06202891026817 13.820 3.827 173.9515 /T 34.3/ 93.6156 2020-Dec-04 00:00 58.14724 24.13375 0.07525058105036 14.493 4.073 168.2193 /T 51.9/ 87.8209 2020-Dec-05 00:00 54.28476 23.62971 0.08893100399428 15.025 4.235 163.7547 /T 68.2/ 80.3429

Setups



1988 XB: Based on previous results at Arecibo, we are expecting a bandwidth of about 5 Hz.

2000 WO107: The rotation period is unknown, but it's probably no faster than 2.1 hours.
Combined with a diameter of about 0.5 km, this suggests a bandwidth of about 23 Hz or less.


CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           no hopping
Bandwidth:               5000 Hz 
TXoffset                 +500 Hz
FFT                     25000 for 0.2 Hz resolution 

Ranging setups:
---------------------------------------------------------------------------
10-usec
baud             10 usec
code            127
PRP            1270 usec
ncoh              1 
bandwidth       787 Hz   
FFT             128
resolution       6.15 Hz
TXoffset       +100 Hz  (echo in column 80)
---------------------------------------------------------------------------
11-usec 
baud             11 usec
code            127
PRP            1397 usec
ncoh              1 
bandwidth       716 Hz   
FFT             128
resolution      5.6 Hz
TXoffset     +100 Hz  (echo in column 82) 
-------------------------------------------------------------------------
1-usec 
baud              1 usec
code            255
ncoh              4
bandwidth       980 Hz   
FFT             128
resolution        7.7 Hz
TXoffset       +100 Hz  (echo in column 77)
---------------------------------------------------------------------

Instructions

NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/1988XB/raw/ aardvark:/export/data0/2000WO107/raw/

POINTING:

  OSOD and predicts will be on aardvark:

7753 1988 XB:
/export/data3/osod/ops/a7753/EPH.OUT.s175
/export/data3/osod/ops/a7753/PRDX.OUT.14f-14-14.s175
/export/data3/osod/ops/a7753/PRDX.OUT.14v-14-14.s175
/export/data3/osod/ops/a7753/PUNCH.OUT.14f-14-14.s175
/export/data3/osod/ops/a7753/PUNCH.OUT.14v-14-14.s175

153201 2000 WO107:
/export/data3/osod/ops/a153201/EPH.OUT.s116
/export/data3/osod/ops/a153201/PRDX.OUT.14f-14-14.s116
/export/data3/osod/ops/a153201/PRDX.OUT.14v-14-14.s116
/export/data3/osod/ops/a153201/PUNCH.OUT.14f-14-14.s116
/export/data3/osod/ops/a153201/PUNCH.OUT.14v-14-14.s116


POINTING  

1988 XB DSS-14 Pointing
                                            TX Offsets
Date (UTC)  DOY  hhmmss  RA        Dec      LHA   Dec   RTT   OSOD
2020 NOV 27 332  090000  141.8575 +11.7458  3.7   1.9   72.7   175
2020 NOV 27 332  100000  141.6756 +11.8421  3.7   1.9   72.9
2020 NOV 27 332  110000  141.4927 +11.9377  3.7   2.0   73.0
2020 NOV 27 332  120000  141.3094 +12.0326  3.7   1.9   73.1
2020 NOV 27 332  130000  141.1262 +12.1267  3.7   1.9   73.2
2020 NOV 27 332  140000  140.9435 +12.2200  3.7   1.9   73.3
2020 NOV 27 332  150000  140.7619 +12.3125  3.7   1.9   73.4


2000 WO107 DSS-14 Pointing
                                            TX Offsets
Date (UTC)  DOY  hhmmss  RA        Dec      LHA   Dec   RTT   OSOD
2020 NOV 27 332  100000  168.9899 -01.6799  6.5   3.1   38.7   116
2020 NOV 27 332  110000  168.3781 -01.3968  6.6   3.0   38.3
2020 NOV 27 332  120000  167.7505 -01.1075  6.7   3.1   37.9
2020 NOV 27 332  130000  167.1074 -00.8118  6.8   3.1   37.5
2020 NOV 27 332  140000  166.4496 -00.5098  6.8   3.1   37.1
2020 NOV 27 332  150000  165.7777 -00.2014  6.9   3.2   36.7
 
Transmit offsets are given in millidegrees.  


1988 XB PRDX.OUT.14f-14-14.175 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2020 NOV 27 09:10 72.7589316000 -253834.049 305.5254 11.7619 141.8273 35.5706 2020 NOV 27 09:20 72.7767551459 -254736.778 308.0625 11.7779 141.7970 37.5983 2020 NOV 27 09:30 72.7946431327 -255672.365 310.5997 11.7940 141.7667 39.6110 2020 NOV 27 09:40 72.8125978091 -256639.624 313.1369 11.8101 141.7363 41.6057 2020 NOV 27 09:50 72.8306213565 -257637.309 315.6741 11.8261 141.7060 43.5792 2020 NOV 27 10:00 72.8487158670 -258664.113 318.2113 11.8421 141.6756 45.5279 2020 NOV 27 10:10 72.8668833296 -259718.671 320.7486 11.8581 141.6451 47.4475 2020 NOV 27 10:20 72.8851256497 -260799.563 323.2859 11.8741 141.6147 49.3331 2020 NOV 27 10:30 72.9034446039 -261905.317 325.8232 11.8900 141.5842 51.1790 2020 NOV 27 10:40 72.9218418910 -263034.414 328.3605 11.9059 141.5537 52.9785 2020 NOV 27 10:50 72.9403190929 -264185.285 330.8979 11.9218 141.5232 54.7238 2020 NOV 27 11:00 72.9588776796 -265356.321 333.4352 11.9377 141.4927 56.4057 2020 NOV 27 11:10 72.9775190162 -266545.872 335.9726 11.9536 141.4622 58.0138 2020 NOV 27 11:20 72.9962443236 -267752.250 338.5100 11.9694 141.4317 59.5358 2020 NOV 27 11:30 73.0150547304 -268973.735 341.0474 11.9853 141.4011 60.9575 2020 NOV 27 11:40 73.0339512343 -270208.578 343.5848 12.0011 141.3706 62.2630 2020 NOV 27 11:50 73.0529347098 -271455.001 346.1222 12.0169 141.3400 63.4349 2020 NOV 27 12:00 73.0720059055 -272711.206 348.6596 12.0326 141.3094 64.4542 2020 NOV 27 12:10 73.0911654345 -273975.372 351.1970 12.0484 141.2789 65.3020 2020 NOV 27 12:20 73.1104138088 -275245.666 353.7344 12.0641 141.2483 65.9597 2020 NOV 27 12:30 73.1297513841 -276520.239 356.2718 12.0798 141.2178 66.4112 2020 NOV 27 12:40 73.1491783864 -277797.235 358.8091 12.0954 141.1872 66.6446 2020 NOV 27 12:50 73.1686949295 -279074.794 1.3465 12.1111 141.1567 66.6533 2020 NOV 27 13:00 73.1883009964 -280351.054 3.8839 12.1267 141.1262 66.4372 2020 NOV 27 13:10 73.2079964129 -281624.154 6.4212 12.1423 141.0957 66.0023 2020 NOV 27 13:20 73.2277809015 -282892.241 8.9585 12.1579 141.0652 65.3606 2020 NOV 27 13:30 73.2476540370 -284153.471 11.4959 12.1735 141.0348 64.5279 2020 NOV 27 13:40 73.2676152925 -285406.013 14.0331 12.1890 141.0043 63.5226 2020 NOV 27 13:50 73.2876639863 -286648.053 16.5704 12.2045 140.9739 62.3639 2020 NOV 27 14:00 73.3077993192 -287877.798 19.1076 12.2200 140.9435 61.0707 2020 NOV 27 14:10 73.3280203579 -289093.477 21.6448 12.2355 140.9132 59.6606 2000 WO107 PRDX.OUT.14f-14-14.116 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2020 NOV 27 10:10 38.6119920282 977806.811 293.5047 -1.6331 168.8890 17.9590 2020 NOV 27 10:20 38.5435407033 975328.762 296.1128 -1.5862 168.7877 20.0276 2020 NOV 27 10:30 38.4752649306 972797.785 298.7214 -1.5391 168.6860 22.0784 2020 NOV 27 10:40 38.4071683928 970214.765 301.3305 -1.4918 168.5838 24.1090 2020 NOV 27 10:50 38.3392547047 967580.672 303.9399 -1.4444 168.4812 26.1168 2020 NOV 27 11:00 38.2715274097 964896.561 306.5498 -1.3968 168.3781 28.0990 2020 NOV 27 11:10 38.2039899711 962163.572 309.1602 -1.3490 168.2746 30.0523 2020 NOV 27 11:20 38.1366457728 959382.924 311.7710 -1.3011 168.1706 31.9734 2020 NOV 27 11:30 38.0694981173 956555.913 314.3822 -1.2529 168.0662 33.8582 2020 NOV 27 11:40 38.0025502000 953683.912 316.9939 -1.2046 167.9614 35.7026 2020 NOV 27 11:50 37.9358051243 950768.364 319.6060 -1.1561 167.8562 37.5017 2020 NOV 27 12:00 37.8692658936 947810.784 322.2185 -1.1075 167.7505 39.2502 2020 NOV 27 12:10 37.8029353955 944812.753 324.8315 -1.0587 167.6444 40.9422 2020 NOV 27 12:20 37.7368164085 941775.912 327.4449 -1.0096 167.5378 42.5714 2020 NOV 27 12:30 37.6709115970 938701.965 330.0587 -0.9605 167.4309 44.1306 2020 NOV 27 12:40 37.6052234973 935592.670 332.6729 -0.9111 167.3235 45.6119 2020 NOV 27 12:50 37.5397545275 932449.838 335.2876 -0.8616 167.2157 47.0071 2020 NOV 27 13:00 37.4745069665 929275.327 337.9026 -0.8118 167.1074 48.3072 2020 NOV 27 13:10 37.4094829754 926071.043 340.5181 -0.7619 166.9988 49.5026 2020 NOV 27 13:20 37.3446845698 922838.927 343.1340 -0.7119 166.8898 50.5837 2020 NOV 27 13:30 37.2801136350 919580.961 345.7503 -0.6616 166.7803 51.5405 2020 NOV 27 13:40 37.2157719054 916299.158 348.3670 -0.6112 166.6705 52.3633 2020 NOV 27 13:50 37.1516609878 912995.557 350.9841 -0.5606 166.5602 53.0431 2020 NOV 27 14:00 37.0877823308 909672.222 353.6016 -0.5098 166.4496 53.5717 2020 NOV 27 14:10 37.0241372518 906331.236 356.2195 -0.4588 166.3385 53.9423

(7753) 1988 XB GOLDSTONE MASTERLOG

============================================================================== 2020 November 18 (DOY 323) Observer: Brozovic <--- UTC ---> TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW no hops - - 5000 Hz 171 10000 0.5 Hz +500 Hz 4 124238-125109 CW no hops - - 5000 Hz 172 10000 0.5 Hz +500 Hz 8 125458-131313 CW no hops - - 5000 Hz 173 10000 0.5 Hz +500 Hz 2 131632-132008 10 usec 1 127 787.4 Hz 173 128 6.15 Hz +100 Hz 2 133055-133431 0.5 usec 64 255 122.5 Hz 173 512 0.24 Hz +20 Hz 21 134122-143116 290 kW on 1st CW run; 450 kW afterward (2 klystrons) ----------------------------------------------------- 2020 November 19 (DOY 324) Observer: Naidu Ptx = 414 kW (two klystrons) TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 174 512 0.24 Hz +20 Hz 86 120035-152856 ----------------------------------------------------- 2020 November 20 (DOY 325) Observer: Naidu Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 174 512 0.24 Hz +20 Hz 44 113148-131603 ----------------------------------------------------- 2020 November 21 (DOY 326) Observer: Brozovic Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 174 512 0.24 Hz +20 Hz 29 131053-141535 ----------------------------------------------------- 2020 November 22 (DOY 327) Observer: Brozovic Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 174 512 0.24 Hz +20 Hz 21 123825-132456 0.5 usec 128 127 123.0 Hz 174 512 0.24 Hz +20 Hz 20 132739-141152 ----------------------------------------------------- 2020 November 24 (DOY 329) Observer: Naidu Ptx = 440 kW <--- UTC ---> TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 175 512 0.24 Hz +20 Hz 116 110615-153246 ----------------------------------------------------- 2020 November 25 (DOY 330) Observer: Naidu Ptx = 440 kW <--- UTC ---> TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 175 512 0.24 Hz +20 Hz 109 091648-133009 ----------------------------------------------------- 2020 November 27 (DOY 332) Observer: Naidu Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW no hops - - 5000 Hz 175 25000 0.2 Hz +500 Hz 5 101557-102701 0.5 usec 128 127 123.0 Hz 175 512 0.24 Hz +20 Hz 34 103941-120233 ----------------------------------------------------- 2020 December 1 (DOY 336) Observer: Benner Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.5 usec 128 127 123.0 Hz 175 128 0.96 Hz +20 Hz 21 104550-114702 -----------------------------------------------------
=============================================== 2017 WJ16 Goldstone Masterlog: 2020 Nov 20-25 =============================================== 2020 November 20 (DOY 325) Observer: Naidu Ptx = 440 kW <--- UTC ---> TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW - - 5000 Hz 7 2500 2 Hz +500 Hz 52 133137-140512 ----------------------------------------------------- 2020 November 21 (DOY 326) Observer: Brozovic Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW - - 5000 Hz 7 2500 2 Hz +500 Hz 43 111050-113655 1.0 usec 2 1023 489 Hz 7 64 7.6 Hz +100 Hz 108 114341-124504 ----------------------------------------------------- 2020 November 22 (DOY 327) Observer: Brozovic Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 1.0 usec 8 255 490 Hz 8 64 7.7 Hz +100 Hz 7 112849-113216 1.0 usec 8 255 490 Hz 8 64 7.7 Hz +100 Hz 76 113203-121428 ----------------------------------------------------- 2020 November 25 (DOY 330) Observer: Naidu Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 1.0 usec 8 255 490 Hz 9 64 7.7 Hz +100 Hz 63 070613-074217 CW - - 5000 Hz 9 2500 2 Hz +500 Hz 132 074848-085536 -----------------------------------------------------
============================================================ (153201) 2000 WO107 Goldstone Masterlog: 2020 Nov 27-Dec 01 ============================================================ 2020 November 27 (DOY 332) DONE Observer: Benner Ptx = 440 kW <--- UTC ---> TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW no hops - - 5000 Hz 116 2500 2.0 Hz +500 Hz 26 123131-130609 CW no hops - - 5000 Hz 117 2500 2.0 Hz +500 Hz 9 131044-132144 CW no hops - - 5000 Hz 117 10000 0.5 Hz +500 Hz 2 132522-132716 10 usec 1 127 787.4 Hz 118 128 6.15 Hz +100 Hz 5 135508-140057 11 usec 1 127 716 Hz 118 128 5.6 Hz +100 Hz 5 140333-140923 ----------------------------------------------------- 2020 November 28 (DOY 333) Observer: Brozovic Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW no hops - - 5000 Hz 119 10000 0.5 Hz +500 Hz 10 085105-090135 1 usec 2 1023 489 Hz 119 64 7.6 Hz +100 Hz 6 091018-091624 1 usec 2 1023 489 Hz 120 64 7.6 Hz +100 Hz 4 091907-092257 0.125 usec 512 127 123.0 Hz 120 128 0.96 Hz +30 Hz 55 093217-103211 0.125 usec 512 127 123.0 Hz 119 128 0.96 Hz +30 Hz 172 104058-134507 ----------------------------------------------------- 2020 November 29 (DOY 334) Observer: Benner Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS CW no hops - - 5000 Hz 121 1000 0.5 Hz +500 Hz 11 081049-082126 1 usec 1 1023 977.5 Hz 121 256 3.8 Hz +100 Hz 4 082906-083236 0.125 usec 512 127 123.0 Hz 121 128 0.96 Hz +30 Hz 70 084308-095350 0.125 usec 512 127 123.0 Hz 122 128 0.96 Hz +30 Hz 43 101916-110229 0.125 usec 512 127 123.0 Hz 122 128 0.96 Hz +30 Hz 138 111354-133347 ----------------------------------------------------- 2020 November 30 (DOY 335) Observer: Benner Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.125 usec 512 127 123.0 Hz 122 128 0.96 Hz +30 Hz 255 084533-134116 ----------------------------------------------------- 2020 December 1 (DOY 336) Observer: Benner Ptx = 440 kW TX rcsta rcend Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS 0.25 usec 256 127 123.0 Hz 122 128 0.96 Hz +30 Hz 66 115703-133623 -----------------------------------------------------

Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 183-601 | FAX: (818) 393-4445 Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov California Institute of Technology | Plan: To live long and prosper Pasadena, CA 91109-8099 https://echo.jpl.nasa.gov/asteroids/1988XB/1988xb.2020.goldstone.planning.html

Asteroid Radar Astronomy
*************************************************************************************************************