Goldstone Radar Observations Planning: (7753) 1988 XB, 2017 WJ16, and 2000 WO107
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)
---------------------------------------------------------------------
NOTE: Data should be moved to the appropriate subdirectories in
aardvark:/export/data0/1988XB/raw/
aardvark:/export/data0/2000WO107/raw/
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
==============================================================================
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