Goldstone Radar Observations Planning: 1998 OK1, 1993 BX3, 2010 JE87, and 2016 CL136


Background



1998 OK1




1993 BX3

Asteroid 65717 (1993 BX3) was discovered by Rob McNaught at Siding
Spring observatory on January 31, 1993.  It's absolute magnitude is
20.8 suggesting a size within a factor of two of 230 m. Lightcurves
obtained Mottola et al. (1995) showed that its spin period was 20.463
h, and its lightcurve amplitude was 0.9 mag, suggesting a fairly
elongated object. Petr Pravec et al. (http://www.asu.cas.cz/~ppravec/newres.txt) 
observed this asteroid in November 2020, and reported its spin period
to be 20.294 +/- 0.004 h, with a lightcurve amplitude of 0.89
mag. 1993 BX3 has a long observing arc of over 28 years, between
October 1992 to January 2021, which allowed a > 6-sigma detection of a
A2, a non-gravitational acceleration parameter related to the
Yarkovsky drift. Radar observations could allow us to estimate the
size and albedo of this asteroid, confirm its elongation and spin
period, and refine the estimate of the Yarkovsky drift.


2010 JE87

Asteroid 468727 (2010 JE87) was discovered by the Wide-field Infrared
Survey Explorer (WISE) mission on May 10, 2010. Based on those
observations Mainzer et al. (2011) estimate the diameter of the
asteroid to be 308 +/- 16 m, and its optical albedo to be 0.108 +/-
0.027. It will make a close approach to Earth on January 25, 2021 at a
distance of 0.040 au (15.7 lunar distances). Not much is known about
this asteroid and the Goldstone radar observations should allow us to
estimate its diameter and period, as well as refine its orbit.


2016 CL136




Orbital and Physical Characteristics  
Name                     1998 OK1             1993 BX3                 2010 JE87            2016 CL136
Asteroid number          363024               65717                    468727               not numbered
Discoverer               LINEAR               Siding Spring            WISE                 Catalina Sky Survey
Discovery date           1998-Jul-21          1993-Jan-31              2010-May-10          2016 Feb 8

Close approach (au)      0.0733 au            0.0473 au                0.0404 au            0.0353 au
Close approach (LD)      28.5 LD              18.4 LD                  15.7 LD              13.7 LD
Close approach date      2021 January 21      2021 January 17          2021 January 25      2021 Feb 1

Orbit type               Apollo               Apollo                   Aten                 Aten
semimajor axis           1.356 au             1.395 au                 0.904 au             0.730 au
eccentricity             0.429                0.281                    0.437                0.622
inclination              14.0 deg             2.791 deg                16.9 deg             21.5 deg
Orbital period           1.58 years           1.65 years               0.86 years           0.62 y
perihelion distance      0.774 au             1.003 au                 0.509 au             0.276 au
aphelion distance        1.937 au             1.787 au                 1.299 au             1.184 au
MOID                     0.0397 au            0.0477 au                0.0352 au            0.029 au

absolute magnitude (H)   19.3                 20.8                     20.7                 21.4
diameter                 0.558 km (NEOWISE)   unknown                  0.308 km (NEOWISE)   0.12 km
optical albedo           0.099                unknown                  0.108                0.32
rotation period          unknown              20.294 h (Pravec email)  unknown              unknown
lightcurve amplitude     unknown              unknown	               unknown              unknown
pole direction           unknown              unknown		       unknown              unknown
spectral class           unknown              unknown                  unknown              unknown
PHA?                     Yes                  Yes                      Yes                  Yes

LD = lunar distance (0.00257 au or 384,400 km)

Last update: 2021 February 3

Goldstone Detection of (363024) 1998 OK1


Echo power spectrum from 1998 OK1 obtained on 2021 January 23.


Goldstone Detection of (65717) 1993 BX3


Echo power spectrum from 1993 BX3 obtained on 2021 January 29.  


Echo power spectrum from 1993 BX3 obtained on 2021 February 1.


Goldstone Detection of (468727) 2010 JE87


Echo power spectrum from 2010 JE87 obtained on 2021 January 27.


Goldstone Detection of 2016 CL136


Echo power spectrum from 2016 CL136 obtained on 2021 February 2.


Discovery M.P.E.C.

1998 OK1
https://www.minorplanetcenter.net/mpec/J98/J98O13.html

1993 BX3
https://minorplanetcenter.net//iau/mpec/J98/J98F16.html

2010 JE87
https://minorplanetcenter.net//mpec/K10/K10J99.html

2016 CL136
https://www.minorplanetcenter.net/mpec/K16/K16CB5.html


SNR Calculations

Goldstone SNRs

1998 OK1
1998 OK1:  D = 0.56 km,  P = 2.1 h,  OC albedo = 0.1
SNRs assume Ptx = 450 kW

wk DOY Date (UT)       window (UT)  RA,DEC      Dist.      Runs    SNR/day SNR/run   
02 16  2021 JAN 16     18:35-03:45  346.6,  3   0.085      195       17        1
03 17  2021 JAN 17     18:25-04:05  348.7,  9   0.081      216       21        1
03 18  2021 JAN 18     18:15-04:25  351.0, 14   0.077      237       26        2
03 19  2021 JAN 19     18:05-04:45  353.7, 20   0.075      256       30        2
03 20  2021 JAN 20     17:55-05:10  356.7, 27   0.074      275       33        2
03 21  2021 JAN 21     17:50-05:35    0.1, 33   0.073      289       34        2
03 22  2021 JAN 22     17:45-06:05    4.0, 39   0.074      302       34        2
03 23  2021 JAN 23     17:35-06:40    8.5, 45   0.075      314       33        2
04 24  2021 JAN 24     17:35-07:15   13.7, 51   0.077      319       30        2
04 25  2021 JAN 25     17:30-07:55   19.6, 55   0.080      323       26        1
04 26  2021 JAN 26     17:30-08:40   26.4, 59   0.084      324       22        1
04 27  2021 JAN 27     17:35-09:25   33.8, 62   0.089      320       18        1



1993 BX3
1993 BX3:  D = 0.22 km,  P = 20.3 h,  OC albedo = 0.1
wk DOY Date (UT)       window (UT)  RA,DEC      Dist.      Runs    SNR/day SNR/run   
04 24  2021 JAN 24     07:10-09:00  127.9,-33   0.050       66       48        6
04 25  2021 JAN 25     06:55-09:30  130.4,-32   0.050       92       54        6
04 26  2021 JAN 26     06:40-09:50  132.7,-30   0.051      112       57        5
04 27  2021 JAN 27     06:30-10:10  134.9,-29   0.052      127       57        5
04 28  2021 JAN 28     06:25-10:30  137.0,-28   0.053      139       56        5
04 29  2021 JAN 29     06:15-10:45  138.9,-27   0.054      151       55        4
04 30  2021 JAN 30     06:10-10:55  140.8,-25   0.055      156       52        4
05 31  2021 JAN 31     06:05-11:10  142.5,-24   0.056      164       50        4
05 32  2021 FEB 01     05:55-11:20  144.0,-23   0.057      171       47        4
05 33  2021 FEB 02     05:50-11:30  145.5,-22   0.058      175       44        3
05 34  2021 FEB 03     05:45-11:35  146.9,-21   0.060      176       41        3
05 35  2021 FEB 04     05:40-11:45  148.2,-19   0.061      179       38        3
05 36  2021 FEB 05     05:35-11:50  149.4,-18   0.063      180       35        3
05 37  2021 FEB 06     05:30-12:00  150.5,-17   0.064      182       32        2
06 38  2021 FEB 07     05:25-12:05  151.6,-16   0.066      182       30        2
06 39  2021 FEB 08     05:20-12:10  152.5,-15   0.067      182       27        2
06 40  2021 FEB 09     05:15-12:15  153.4,-14   0.069      182       25        2
06 41  2021 FEB 10     05:10-12:15  154.3,-13   0.071      180       23        2
06 42  2021 FEB 11     05:05-12:20  155.0,-12   0.073      179       20        2


2010 JE87
2010 JE87:  D = 0.3 km,  P = 2.1 h,  OC albedo = 0.1
wk DOY Date (UT)       window (UT)  RA,DEC      Dist.      Runs    SNR/day SNR/run   
03 19  2021 JAN 19     15:00-21:10  272.7,-18   0.065      170       16        1
03 20  2021 JAN 20     14:30-21:25  271.2,-13   0.058      213       25        2
03 21  2021 JAN 21     13:55-21:40  269.4, -7   0.052      266       41        3
03 22  2021 JAN 22     13:15-21:55  267.3,  0   0.047      330       66        4
03 23  2021 JAN 23     12:35-22:05  264.7, 10   0.043      394       97        5
04 24  2021 JAN 24     11:55-22:20  261.6, 21   0.041      457      127        6
04 25  2021 JAN 25     11:10-22:30  257.6, 33   0.040      505      141        6
04 26  2021 JAN 26     10:15-22:40  252.6, 44   0.041      548      142        6
04 27  2021 JAN 27     09:15-22:50  246.1, 54   0.043      572      123        5
04 28  2021 JAN 28     08:05-22:55  237.4, 62   0.046      580       96        4
04 29  2021 JAN 29     06:40-23:00  226.0, 68   0.051      583       70        3
04 30  2021 JAN 30     04:55-23:10  211.8, 72   0.056      592       50        2
05 31  2021 JAN 31     02:55-20:40  157.6, 74   0.061     2642       76        1


2016 CL136
2016 CL136:  D = 0.17 km,  P = 2.2 h,  OC albedo = 0.1
w DOY  start date    window      RA, dec   dist  runs  SNR/day SNR/run
4  28  2021 Jan 28  09:50-20:08  236, +19  0.057  332    19      1
4  29  2021 Jan 29  09:12-19:43  229, +23  0.049  393    33      2
4  30  2021 Jan 30  08:23-19:07  219, +27  0.043  466    58      3    
4  31  2021 Jan 31  07:20-18:16  205, +30  0.038  541    95      4 
5  32  2021 Feb 01  06:02-17:06  188, +33  0.036  593   130      6 
5  33  2021 Feb 02  04:41-15:45  169, +33  0.036  592   130      6   Scheduled 0800-1345.
5  34  2021 Feb 03  03:30-14:28  152, +31  0.038  540    93      4 
5  35  2021 Feb 04  02:38-13:25  139, +27  0.043  465    57      3
5  36  2021 Feb 05  02:02-12:36  129, +23  0.050  392    32      2
5  37  2021 Feb 06  01:36-11:59  122, +20  0.058  330    18      1
Actual diameter is probably closer to 0.12 km, so SNRs will be about 0.6x values above.


Track Assignments


DOY  BOA   BOT   EOT   EOA
020  1915  2045  2215  2245  DSS-14 GSSR AST 1998 OK1
022  2005  2135  2235  2305  DSS-14 GSSR AST 1998 OK1
023  0300  0430  0600  0630  DSS-14 GSSR AST 1998 OK1
025  0720  0850  1245  1315  DSS-14 GSSR 1993BX3/2010JE87
026  0515  0645  0945  1015  DSS-14 GSSR AST 1993 BX3    
027  0755  0925  1130  1200  DSS-14 GSSR 1993BX3/2010JE87
028  0715  0845  1030  1100  DSS-14 GSSR 1993BX3/2010JE87
029  0515  0645  0930  1000  DSS-14 GSSR AST 1993 BX3    
032  0730  0900  1115  1145  DSS-14 GSSR AST 1993 BX3    
033  0600  0800  1345  1415  DSS-14 GSSR AST 2016 CL136

Goldstone tracks:
    UT                 UT         PST                  Duration Round-trip     
DOY Date               TX Window  TX Window            hh:mm    time (sec) SNR/RTT 
20  Jan 20  1998 OK1   2045-2215  1245-1415 Jan 20      1:30       74         2                       SN
22  Jan 22  1998 OK1   2135-2235  1335-1435 Jan 22      1:00       74         2                       MB
23  Jan 23  1998 OK1   0430-0600  2030-2200 Jan 22      1:30       75         2                       SN
25  Jan 25  1993 BX3   0850-1245  0050-0445 Jan 25      3:55       50         6    Sets  at 0930 UT   MB
25  Jan 25  2010 JE87  0850-1245  0050-0445 Jan 25      3:55       40         6    Rises at 1110 UT   MB
26  Jan 26  1993 BX3   0645-0945  2245-0145 Jan 25-26   3:00       51         5                       SN
27  Jan 27  1993 BX3   0925-1130  0125-0330 Jan 27      2:05       53         5    Sets at 1010 UT    MB
27  Jan 27  2010 JE87  0925-1130  0125-0330 Jan 27      2:05       43         5                       MB
28  Jan 28  1993 BX3   0845-1030  0045-0230 Jan 28      1:45       53         5                       LB
28  Jan 28  2010 JE87  0845-1030  0045-0230 Jan 28      1:45       46         4                       LB
29  Jan 29  1993 BX3   0645-0930  2245-0130 Jan 28-29   2:45       54         4                       LB
32  Feb  1  1993 BX3   0900-1115  0100-0315 Feb 01      2:15       57         4                       LB
33  Feb  2  2016 CL136 0800-1345  0000-0545 Feb 02      5:45       36         6                       SN
33  Feb  2  Tests      0905-1105  0105-0305 Feb 02      2:00                                          CL
Feb. 2: we will switch to orbital debris tests from 0905-1105, when the elevations for 2016 CL136
will exceed 75 degrees and when tracking the asteroid will be difficult.




Uncertainties

1998 OK1
JPL/Horizons solution 49, # obs: 156 (1998-2020)
2021 Jan 16
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2021-Jan-15 00:00     343.10997  -5.30046 0.09567767777190      1.680        0.44        1.59       0.001179
 2021-Jan-16 00:00     344.76225  -1.22013 0.09020759024193      1.782        0.50        1.82       0.001178
 2021-Jan-17 00:00     346.58336   3.34355 0.08533612320452      1.902        0.61        2.24       0.001171
 2021-Jan-18 00:00     348.60373   8.39933 0.08116045370479      2.046        0.80        2.91       0.001157
 2021-Jan-19 00:00     350.85984  13.92145 0.07778249478737      2.217        1.06        3.85       0.001133
 2021-Jan-20 00:00     353.39543  19.83710 0.07530007632245      2.410        1.37        4.99       0.001098
 2021-Jan-21 00:00     356.26259  26.01989 0.07379482502789      2.612        1.70        6.19       0.001050
 2021-Jan-22 00:00     359.52256  32.29514 0.07331910163169      2.801        2.00        7.28       0.000990
 2021-Jan-23 00:00       3.24571  38.45957 0.07388602869351      2.955        2.23        8.09       0.000920
 2021-Jan-24 00:00       7.50950  44.31037 0.07546650194123      3.056        2.34        8.52       0.000844
 2021-Jan-25 00:00      12.39289  49.67329 0.07799449817265      3.097        2.35        8.54       0.000766
 2021-Jan-26 00:00      17.96475  54.42017 0.08137848165709      3.080        2.26        8.23       0.000690
 2021-Jan-27 00:00      24.26413  58.47334 0.08551470737762      3.017        2.11        7.68       0.000618
 2021-Jan-28 00:00      31.27279  61.80107 0.09029869391644      2.921        1.92        6.99       0.000554
 2021-Jan-29 00:00      38.88674  64.41038 0.09563304371387      2.803        1.72        6.26       0.000498
 2021-Jan-30 00:00      46.90249  66.34087 0.10143157647285      2.674        1.52        5.53       0.000449
 2021-Jan-31 00:00      55.03580  67.65934 0.10762067256211      2.541        1.33        4.84       0.000409
 2021-Feb-01 00:00      62.97615  68.45287 0.11413889240496      2.409        1.16        4.22       0.000376
 2021-Feb-02 00:00      70.45434  68.81875 0.12093572599100      2.282        1.01        3.66       0.000349
 2021-Feb-03 00:00      77.28980  68.85331 0.12797003004798      2.162        0.87        3.16       0.000328
 2021-Feb-04 00:00      83.40066  68.64288 0.13520846504058      2.048        0.75        2.73       0.000311
 2021-Feb-05 00:00      88.78478  68.25888 0.14262408039846      1.943        0.65        2.36       0.000299
 2021-Feb-06 00:00      93.49051  67.75694 0.15019510088724      1.844        0.56        2.03       0.000290
 2021-Feb-07 00:00      97.59063  67.17851 0.15790391746839      1.753        0.48        1.75       0.000283
 2021-Feb-08 00:00     101.16461  66.55351 0.16573626378644      1.668        0.42        1.51       0.000278
 2021-Feb-09 00:00     104.28866  65.90299 0.17368055207062      1.590        0.36        1.30       0.000275
 2021-Feb-10 00:00     107.03112  65.24150 0.18172734208308      1.517        0.31        1.13       0.000273
 2021-Feb-11 00:00     109.45101  64.57891 0.18986891939041      1.450        0.27        0.98       0.000272
 2021-Feb-12 00:00     111.59830  63.92176 0.19809896240021      1.387        0.23        0.85       0.000272
 2021-Feb-13 00:00     113.51478  63.27425 0.20641228042416      1.329        0.20        0.74       0.000273
 2021-Feb-14 00:00     115.23525  62.63898 0.21480460748428      1.274        0.18        0.65       0.000274
 2021-Feb-15 00:00     116.78863  62.01741 0.22327243895681      1.223        0.16        0.58       0.000275

1993 BX3
JPL/Horizons solution 99, # obs: 478 (1992-2021)
2021 January 16
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2021-Jan-15 00:00     100.19379 -40.85104 0.04757466098039      0.674        0.13        0.48       0.000169
 2021-Jan-16 00:00     103.43199 -40.48427 0.04741365816070      0.704        0.14        0.50       0.000167
 2021-Jan-17 00:00     106.65498 -40.00346 0.04733803537031      0.733        0.14        0.52       0.000164
 2021-Jan-18 00:00     109.84071 -39.41132 0.04734962771680      0.761        0.15        0.54       0.000161
 2021-Jan-19 00:00     112.96846 -38.71271 0.04744984946379      0.787        0.15        0.56       0.000158
 2021-Jan-20 00:00     116.01958 -37.91442 0.04763966806769      0.811        0.16        0.57       0.000155
 2021-Jan-21 00:00     118.97804 -37.02484 0.04791959141086      0.833        0.16        0.58       0.000151
 2021-Jan-22 00:00     121.83074 -36.05361 0.04828966902370      0.853        0.16        0.59       0.000148
 2021-Jan-23 00:00     124.56760 -35.01125 0.04874950709314      0.871        0.16        0.60       0.000144
 2021-Jan-24 00:00     127.18149 -33.90869 0.04929829630049      0.886        0.16        0.60       0.000141
 2021-Jan-25 00:00     129.66800 -32.75695 0.04993485107279      0.898        0.16        0.60       0.000137
 2021-Jan-26 00:00     132.02513 -31.56676 0.05065765865799      0.908        0.16        0.59       0.000133
 2021-Jan-27 00:00     134.25289 -30.34833 0.05146493644773      0.915        0.16        0.58       0.000130
 2021-Jan-28 00:00     136.35296 -29.11110 0.05235469598495      0.920        0.16        0.57       0.000126
 2021-Jan-29 00:00     138.32830 -27.86361 0.05332481187444      0.922        0.15        0.56       0.000123
 2021-Jan-30 00:00     140.18283 -26.61343 0.05437309320623      0.922        0.15        0.54       0.000120
 2021-Jan-31 00:00     141.92118 -25.36712 0.05549735419619      0.921        0.14        0.52       0.000117
 2021-Feb-01 00:00     143.54845 -24.13024 0.05669547995300      0.918        0.14        0.51       0.000115
 2021-Feb-02 00:00     145.07002 -22.90746 0.05796548315266      0.913        0.13        0.48       0.000112
 2021-Feb-03 00:00     146.49146 -21.70255 0.05930554825314      0.906        0.13        0.46       0.000110
 2021-Feb-04 00:00     147.81835 -20.51858 0.06071406149539      0.899        0.12        0.44       0.000109
 2021-Feb-05 00:00     149.05627 -19.35795 0.06218962667918      0.891        0.12        0.42       0.000107
 2021-Feb-06 00:00     150.21066 -18.22253 0.06373106798260      0.881        0.11        0.40       0.000106
 2021-Feb-07 00:00     151.28685 -17.11375 0.06533742174601      0.871        0.10        0.38       0.000105
 2021-Feb-08 00:00     152.28996 -16.03265 0.06700791942723      0.860        0.10        0.36       0.000104
 2021-Feb-09 00:00     153.22494 -14.98001 0.06874196423416      0.849        0.09        0.34       0.000103
 2021-Feb-10 00:00     154.09647 -13.95634 0.07053910440054      0.837        0.09        0.33       0.000103
 2021-Feb-11 00:00     154.90900 -12.96199 0.07239900646834      0.825        0.09        0.32       0.000103
 2021-Feb-12 00:00     155.66675 -11.99711 0.07432143183965      0.812        0.08        0.30       0.000103
 2021-Feb-13 00:00     156.37365 -11.06175 0.07630621897237      0.800        0.08        0.30       0.000104
 2021-Feb-14 00:00     157.03340 -10.15583 0.07835327206241      0.787        0.08        0.29       0.000105
 2021-Feb-15 00:00     157.64942  -9.27917 0.08046255543046      0.774        0.08        0.28       0.000105

2010 JE87
JPL/Horizons solution 31, # obs: 104 (2010-2016)
2021 January 16
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2021-Jan-15 00:00     278.22854 -33.06270 0.10252595924129      5.203        2.67        9.69       0.000667
 2021-Jan-16 00:00     277.37484 -31.09422 0.09436851738533      5.648        2.92       10.63       0.000583
 2021-Jan-17 00:00     276.43022 -28.74227 0.08641340605577      6.157        3.26       11.83       0.000499
 2021-Jan-18 00:00     275.37640 -25.90699 0.07870052227717      6.740        3.68       13.36       0.000420
 2021-Jan-19 00:00     274.18975 -22.45643 0.07128739831307      7.403        4.21       15.30       0.000364
 2021-Jan-20 00:00     272.83935 -18.21810 0.06425707426070      8.145        4.87       17.71       0.000364
 2021-Jan-21 00:00     271.28421 -12.97387 0.05772917890180      8.944        5.66       20.56       0.000445
 2021-Jan-22 00:00     269.46913  -6.46948 0.05187388743402      9.736        6.49       23.60       0.000603
 2021-Jan-23 00:00     267.31852   1.53682 0.04692464308269     10.395        7.18       26.10       0.000814
 2021-Jan-24 00:00     264.72707  11.15031 0.04317644824026     10.727        7.34       26.68       0.001054
 2021-Jan-25 00:00     261.54551  22.13670 0.04094474505912     10.554        6.55       23.82       0.001290
 2021-Jan-26 00:00     257.55934  33.77217 0.04046808192761      9.891        4.80       17.46       0.001479
 2021-Jan-27 00:00     252.45904  44.99367 0.04179639234700      8.990        2.78       10.12       0.001593
 2021-Jan-28 00:00     245.80696  54.83963 0.04476201622530      8.121        1.64        5.96       0.001630
 2021-Jan-29 00:00     237.03299  62.77033 0.04906421662620      7.380        1.80        6.56       0.001610
 2021-Jan-30 00:00     225.56746  68.63697 0.05438405361483      6.745        2.14        7.79       0.001556
 2021-Jan-31 00:00     211.31308  72.50606 0.06045246450047      6.185        2.27        8.27       0.001488
 2021-Feb-01 00:00     195.37434  74.58518 0.06706686603799      5.681        2.25        8.17       0.001415
 2021-Feb-02 00:00     179.96836  75.24896 0.07408248919113      5.228        2.14        7.79       0.001344
 2021-Feb-03 00:00     166.93788  74.97837 0.08139777486724      4.823        2.01        7.29       0.001276
 2021-Feb-04 00:00     156.77989  74.19857 0.08894151952714      4.460        1.87        6.78       0.001214
 2021-Feb-05 00:00     149.10112  73.19150 0.09666337620608      4.136        1.73        6.30       0.001156
 2021-Feb-06 00:00     143.29860  72.11379 0.10452728195674      3.847        1.61        5.86       0.001104
 2021-Feb-07 00:00     138.85668  71.04385 0.11250701325938      3.588        1.50        5.46       0.001056
 2021-Feb-08 00:00     135.39810  70.01759 0.12058319037506      3.355        1.40        5.10       0.001011
 2021-Feb-09 00:00     132.65952  69.04920 0.12874124658358      3.146        1.32        4.79       0.000971
 2021-Feb-10 00:00     130.45827  68.14207 0.13697003871204      2.958        1.24        4.51       0.000934
 2021-Feb-11 00:00     128.66630  67.29452 0.14526088736223      2.786        1.17        4.26       0.000901
 2021-Feb-12 00:00     127.19237  66.50256 0.15360690846494      2.631        1.11        4.04       0.000870
 2021-Feb-13 00:00     125.97019  65.76139 0.16200254434755      2.489        1.06        3.83       0.000842
 2021-Feb-14 00:00     124.95071  65.06612 0.17044323207624      2.359        1.01        3.65       0.000816
 2021-Feb-15 00:00     124.09695  64.41208 0.17892516615033      2.240        0.96        3.49       0.000792


2016 CL136
JPL/Horizons solution 20, # obs: 136 (2016-2021)
2021 Jan 31
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2021-Jan-29 00:00 *   233.06655  20.57323 0.05408401982526      1.205        0.86        3.12       0.000211
 2021-Jan-30 00:00 *   224.89890  24.16419 0.04672709044131      1.356        1.05        3.83       0.000205
 2021-Jan-31 00:00 *   213.32154  28.22163 0.04069802617213      1.513        1.30        4.71       0.000200
 2021-Feb-01 00:00 *   197.35873  31.86503 0.03667248494658      1.633        1.51        5.50       0.000197
 2021-Feb-02 00:00 *   177.80721  33.41899 0.03535854963302      1.649        1.57        5.71       0.000194 *
 2021-Feb-03 00:00 *   158.43081  31.90579 0.03706309668101      1.539        1.41        5.13       0.000191
 2021-Feb-04 00:00 *   142.82674  28.40053 0.04143137029890      1.354        1.15        4.17       0.000188
 2021-Feb-05 00:00 *   131.58603  24.53315 0.04775227238347      1.161        0.90        3.28       0.000185
 2021-Feb-06 00:00 *   123.68401  21.12288 0.05537376551312      0.992        0.72        2.63       0.000183

JPL/Horizons solution 19, # obs: 128 (2016-2018)
2021 Jan 26
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2021-Jan-29 00:00 *   233.06568  20.57261 0.05408444782210     39.162       17.47       63.48       0.004621
 2021-Jan-30 00:00 *   224.89802  24.16338 0.04672757447897     43.224       18.27       66.38       0.005287
 2021-Jan-31 00:00 *   213.32077  28.22057 0.04069856170073     46.947       15.60       56.70       0.005929
 2021-Feb-01 00:00 *   197.35832  31.86373 0.03667304919755     49.642        6.53       23.74       0.006345
 2021-Feb-02 00:00 *   177.80742  33.41761 0.03535909610548     50.938       11.57       42.05       0.006263 *
 2021-Feb-03 00:00 *   158.43157  31.90458 0.03706357415336     50.238       24.46       88.90       0.005602
 2021-Feb-04 00:00 *   142.82773  28.39959 0.04143175228227     46.970       28.43      103.34       0.004621
 2021-Feb-05 00:00 *   131.58701  24.53244 0.04775255973597     42.054       26.18       95.14       0.003623
 2021-Feb-06 00:00 *   123.68490  21.12233 0.05537397127598     36.862       22.06       80.19       0.002754


Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination: 1998 OK1 Date__(UT)__HR:MN R.A._(a-appar)_DEC. APmag S-brt delta S-O-T /r T-O-M/MN_Illu% 2021-Jan-15 00:00 343.10997 -5.30046 20. 7. 0.09567767781285 47.3790 /T 25.4/ 4.0210 2021-Jan-16 00:00 344.76225 -1.22013 19. 7. 0.09020759028254 49.6045 /T 17.5/ 9.1717 2021-Jan-17 00:00 346.58336 3.34355 19. 7. 0.08533612324458 52.3586 /T 14.5/ 15.9298 2021-Jan-18 00:00 348.60373 8.39933 19. 7. 0.08116045374401 55.6810 /T 17.7/ 23.8820 2021-Jan-19 00:00 350.85984 13.92145 18.215 6.539 0.07778249482540 59.5769 /T 24.0/ 32.6462 2021-Jan-20 00:00 353.39543 19.83710 17.867 6.391 0.07530007635889 64.0029 /T 31.0/ 41.8855 2021-Jan-21 00:00 356.26259 26.01989 17.547 6.247 0.07379482506230 68.8590 /T 37.7/ 51.3045 2021-Jan-22 00:00 359.52256 32.29514 17.270 6.111 0.07331910166366 73.9938 /T 43.8/ 60.6353 2021-Jan-23 00:00 3.24571 38.45957 17.045 5.987 0.07388602872273 79.2245 /T 49.1/ 69.6190 2021-Jan-24 00:00 7.50950 44.31037 16.874 5.878 0.07546650196751 84.3673 /T 53.8/ 77.9876 2021-Jan-25 00:00 12.39289 49.67329 16.757 5.782 0.07799449819594 89.2660 /T 57.8/ 85.4507 2021-Jan-26 00:00 17.96475 54.42017 16.687 5.699 0.08137848167746 93.8103 /T 61.6/ 91.6921 2021-Jan-27 00:00 24.26413 58.47334 16.656 5.629 0.08551470739528 97.9395 /T 65.3/ 96.3782 2021-Jan-28 00:00 31.27279 61.80107 16.658 5.569 0.09029869393161 101.6347 /T 69.3/ 99.1834 2021-Jan-29 00:00 38.88674 64.41038 16.684 5.518 0.09563304372682 104.9073 /T 73.7/ 99.8288 2021-Jan-30 00:00 46.90249 66.34087 16.729 5.475 0.10143157648385 107.7862 /T 78.9/ 98.1300 2021-Jan-31 00:00 55.03580 67.65934 16.789 5.439 0.10762067257141 110.3094 /T 84.8/ 94.0400 2021-Feb-01 00:00 62.97615 68.45287 16.858 5.409 0.11413889241280 112.5168 /T 91.3/ 87.6767 2021-Feb-02 00:00 70.45434 68.81875 16.934 5.383 0.12093572599759 114.4473 /T 98.4/ 79.3242 2021-Feb-03 00:00 77.28980 68.85331 17.015 5.362 0.12797003005350 116.1362 /T 106.0/ 69.4105 2021-Feb-04 00:00 83.40066 68.64288 17.100 5.344 0.13520846504519 117.6150 /T 113.6/ 58.4687 2021-Feb-05 00:00 88.78478 68.25888 17.186 5.330 0.14262408040230 118.9110 /T 121.1/ 47.0930 2021-Feb-06 00:00 93.49051 67.75694 17.273 5.318 0.15019510089043 120.0476 /T 128.1/ 35.8975 2021-Feb-07 00:00 97.59063 67.17851 17.361 5.308 0.15790391747104 121.0449 /T 133.8/ 25.4778 2021-Feb-08 00:00 101.16461 66.55351 17.449 5.301 0.16573626378865 121.9199 /T 137.7/ 16.3756 2021-Feb-09 00:00 104.28866 65.90299 17.536 5.296 0.17368055207245 122.6870 /T 138.9/ 9.0427 2021-Feb-10 00:00 107.03112 65.24150 17.623 5.292 0.18172734208460 123.3585 /T 137.2/ 3.8081 2021-Feb-11 00:00 109.45101 64.57891 17.708 5.289 0.18986891939169 123.9450 /T 132.9/ 0.8553 2021-Feb-12 00:00 111.59830 63.92176 17.793 5.288 0.19809896240129 124.4554 /T 126.6/ 0.2152 2021-Feb-13 00:00 113.51478 63.27425 17.876 5.288 0.20641228042509 124.8974 /T 119.1/ 1.7808 2021-Feb-14 00:00 115.23525 62.63898 17.959 5.289 0.21480460748510 125.2775 /T 110.8/ 5.3390 2021-Feb-15 00:00 116.78863 62.01741 18.040 5.291 0.22327243895754 125.6015 /T 102.2/ 10.6101 1993 BX3 Date__(UT)__HR:MN R.A._(a-appar)_DEC. APmag S-brt delta S-O-T /r T-O-M/MN_Illu% 2021-Jan-15 00:00 100.19379 -40.85104 16.391 n.a. 0.04757466098056 116.0908 /T 108.3/ 4.0210 2021-Jan-16 00:00 103.43199 -40.48427 16.357 n.a. 0.04741365816087 117.0891 /T 106.3/ 9.1717 2021-Jan-17 00:00 106.65498 -40.00346 16.324 n.a. 0.04733803537047 118.1511 /T 104.3/ 15.9298 2021-Jan-18 00:00 109.84071 -39.41132 16.294 n.a. 0.04734962771695 119.2716 /T 102.1/ 23.8820 2021-Jan-19 00:00 112.96846 -38.71271 16.268 n.a. 0.04744984946393 120.4448 /T 99.5/ 32.6462 2021-Jan-20 00:00 116.01958 -37.91442 16.244 n.a. 0.04763966806783 121.6645 /T 96.6/ 41.8855 2021-Jan-21 00:00 118.97804 -37.02484 16.223 n.a. 0.04791959141099 122.9245 /T 93.2/ 51.3045 2021-Jan-22 00:00 121.83074 -36.05361 16.206 n.a. 0.04828966902382 124.2186 /T 89.2/ 60.6353 2021-Jan-23 00:00 124.56760 -35.01125 16.192 n.a. 0.04874950709326 125.5405 /T 84.6/ 69.6190 2021-Jan-24 00:00 127.18149 -33.90869 16.182 n.a. 0.04929829630060 126.8845 /L 79.4/ 77.9876 2021-Jan-25 00:00 129.66800 -32.75695 16.175 n.a. 0.04993485107289 128.2451 /L 73.7/ 85.4507 2021-Jan-26 00:00 132.02513 -31.56676 16.171 n.a. 0.05065765865809 129.6175 /L 67.5/ 91.6921 2021-Jan-27 00:00 134.25289 -30.34833 16.170 n.a. 0.05146493644782 130.9972 /L 61.0/ 96.3782 2021-Jan-28 00:00 136.35296 -29.11110 16.173 n.a. 0.05235469598504 132.3806 /L 54.7/ 99.1834 2021-Jan-29 00:00 138.32830 -27.86361 16.178 n.a. 0.05332481187452 133.7646 /L 49.1/ 99.8288 2021-Jan-30 00:00 140.18283 -26.61343 16.186 n.a. 0.05437309320631 135.1465 /L 45.0/ 98.1300 2021-Jan-31 00:00 141.92118 -25.36712 16.196 n.a. 0.05549735419627 136.5246 /L 43.2/ 94.0400 2021-Feb-01 00:00 143.54845 -24.13024 16.209 n.a. 0.05669547995308 137.8974 /L 44.5/ 87.6767 2021-Feb-02 00:00 145.07002 -22.90746 16.224 n.a. 0.05796548315274 139.2640 /L 49.0/ 79.3242 2021-Feb-03 00:00 146.49146 -21.70255 16.240 n.a. 0.05930554825322 140.6236 /L 56.0/ 69.4105 2021-Feb-04 00:00 147.81835 -20.51858 16.258 n.a. 0.06071406149547 141.9760 /L 64.8/ 58.4687 2021-Feb-05 00:00 149.05627 -19.35795 16.278 n.a. 0.06218962667926 143.3210 /L 74.9/ 47.0930 2021-Feb-06 00:00 150.21066 -18.22253 16.299 n.a. 0.06373106798269 144.6583 /L 85.7/ 35.8975 2021-Feb-07 00:00 151.28685 -17.11375 16.320 n.a. 0.06533742174610 145.9880 /L 97.0/ 25.4778 2021-Feb-08 00:00 152.28996 -16.03265 16.343 n.a. 0.06700791942732 147.3100 /L 108.5/ 16.3756 2021-Feb-09 00:00 153.22494 -14.98001 16.367 n.a. 0.06874196423425 148.6242 /L 120.0/ 9.0427 2021-Feb-10 00:00 154.09647 -13.95634 16.391 n.a. 0.07053910440064 149.9304 /L 131.2/ 3.8081 2021-Feb-11 00:00 154.90900 -12.96199 16.416 n.a. 0.07239900646844 151.2284 /L 141.5/ 0.8553 2021-Feb-12 00:00 155.66675 -11.99711 16.441 n.a. 0.07432143183977 152.5180 /L 150.2/ 0.2152 2021-Feb-13 00:00 156.37365 -11.06175 16.467 n.a. 0.07630621897249 153.7987 /L 155.4/ 1.7808 2021-Feb-14 00:00 157.03340 -10.15583 16.492 n.a. 0.07835327206254 155.0704 /L 155.0/ 5.3390 2021-Feb-15 00:00 157.64942 -9.27917 16.518 n.a. 0.08046255543060 156.3325 /L 149.5/ 10.6101 2010 JE87 Date__(UT)__HR:MN R.A._(a-appar)_DEC. APmag S-brt delta S-O-T /r T-O-M/MN_Illu% 2021-Jan-15 00:00 278.22854 -33.06270 26. 10. 0.10252595923894 20.4783 /L 40.7/ 4.0210 2021-Jan-16 00:00 277.37484 -31.09422 25. 10. 0.09436851738335 21.1359 /L 54.3/ 9.1717 2021-Jan-17 00:00 276.43022 -28.74227 25. 10. 0.08641340605418 22.0722 /L 67.8/ 15.9298 2021-Jan-18 00:00 275.37640 -25.90699 24. 10. 0.07870052227601 23.3982 /L 81.3/ 23.8820 2021-Jan-19 00:00 274.18975 -22.45643 24. 9. 0.07128739831240 25.2672 /L 94.8/ 32.6462 2021-Jan-20 00:00 272.83935 -18.21810 23. 9. 0.06425707426058 27.8830 /L 108.2/ 41.8855 2021-Jan-21 00:00 271.28421 -12.97387 22. 9. 0.05772917890230 31.5032 /L 121.4/ 51.3045 2021-Jan-22 00:00 269.46913 -6.46948 21. 8. 0.05187388743523 36.4256 /L 133.6/ 60.6353 2021-Jan-23 00:00 267.31852 1.53682 20. 8. 0.04692464308471 42.9345 /L 142.4/ 69.6190 2021-Jan-24 00:00 264.72707 11.15031 19. 7. 0.04317644824311 51.1732 /L 143.5/ 77.9876 2021-Jan-25 00:00 261.54551 22.13670 18.303 6.713 0.04094474506275 60.9419 /L 134.6/ 85.4507 2021-Jan-26 00:00 257.55934 33.77217 17.624 6.359 0.04046808193187 71.5509 /L 119.8/ 91.6921 2021-Jan-27 00:00 252.45904 44.99367 17.181 6.089 0.04179639235163 81.9790 /L 103.4/ 96.3782 2021-Jan-28 00:00 245.80696 54.83963 16.947 5.890 0.04476201623004 91.3243 /L 88.3/ 99.1834 2021-Jan-29 00:00 237.03299 62.77033 16.866 5.742 0.04906421663086 99.1370 /L 76.4/ 99.8288 2021-Jan-30 00:00 225.56746 68.63697 16.887 5.633 0.05438405361930 105.3931 /L 68.8/ 98.1300 2021-Jan-31 00:00 211.31308 72.50606 16.969 5.552 0.06045246450469 110.2927 /L 66.1/ 94.0400 2021-Feb-01 00:00 195.37434 74.58518 17.085 5.491 0.06706686604196 114.0948 /L 68.2/ 87.6767 2021-Feb-02 00:00 179.96836 75.24896 17.221 5.446 0.07408248919484 117.0371 /L 73.9/ 79.3242 2021-Feb-03 00:00 166.93788 74.97837 17.366 5.413 0.08139777487070 119.3133 /L 82.1/ 69.4105 2021-Feb-04 00:00 156.77989 74.19857 17.514 5.389 0.08894151953037 121.0725 /L 91.6/ 58.4687 2021-Feb-05 00:00 149.10112 73.19150 17.661 5.371 0.09666337620909 122.4279 /L 101.6/ 47.0930 2021-Feb-06 00:00 143.29860 72.11379 17.807 5.359 0.10452728195955 123.4647 /L 111.4/ 35.8975 2021-Feb-07 00:00 138.85668 71.04385 17.950 5.352 0.11250701326200 124.2478 /T 120.5/ 25.4778 2021-Feb-08 00:00 135.39810 70.01759 18.088 5.348 0.12058319037750 124.8263 /T 128.1/ 16.3756 2021-Feb-09 00:00 132.65952 69.04920 18.223 5.347 0.12874124658585 125.2383 /T 133.3/ 9.0427 2021-Feb-10 00:00 130.45827 68.14207 18.354 5.348 0.13697003871416 125.5136 /T 135.1/ 3.8081 2021-Feb-11 00:00 128.66630 67.29452 18.480 5.350 0.14526088736421 125.6755 /T 133.4/ 0.8553 2021-Feb-12 00:00 127.19237 66.50256 18.602 5.355 0.15360690846677 125.7426 /T 128.6/ 0.2152 2021-Feb-13 00:00 125.97019 65.76139 18.721 5.360 0.16200254434925 125.7299 /T 121.6/ 1.7808 2021-Feb-14 00:00 124.95071 65.06612 18.835 5.367 0.17044323207783 125.6495 /T 113.3/ 5.3390 2021-Feb-15 00:00 124.09695 64.41208 18.946 5.374 0.17892516615180 125.5114 /T 104.4/ 10.6101 2016 CL136 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Jan-23 00:00 253.01513 9.54959 0.10880623860007 20.919 5.272 59.2572 /L 147.4/ 69.6190 2021-Jan-24 00:00 251.28508 10.61490 0.09911181407835 20.580 5.205 62.0679 /L 148.4/ 77.9876 2021-Jan-25 00:00 249.18838 11.88446 0.08955027258739 20.207 5.130 65.2859 /L 143.5/ 85.4507 2021-Jan-26 00:00 246.58903 13.42181 0.08016877032116 19.793 5.043 69.0502 /L 134.1/ 91.6921 2021-Jan-27 00:00 243.28213 15.31237 0.07103999861563 19.332 4.944 73.5626 /L 121.5/ 96.3782 2021-Jan-28 00:00 238.95021 17.66625 0.06227849318213 18.814 4.827 79.1191 /L 106.5/ 99.1834 2021-Jan-29 00:00 233.09183 20.60667 0.05406870771207 18.234 4.688 86.1504 /L 89.4/ 99.8288 2021-Jan-30 00:00 224.92311 24.20562 0.04671083969348 17.595 4.521 95.2493 /L 70.2/ 98.1300 2021-Jan-31 00:00 213.33967 28.27286 0.04068136277133 16.920 4.316 107.0851 /L 49.5/ 94.0400 2021-Feb-01 00:00 197.36157 31.92502 0.03665654087479 16.271 4.062 121.9576 /L 31.7/ 87.6767 2021-Feb-02 00:00 177.78694 33.48046 0.03534499975405 15.745 3.754 138.8671 /L 33.6/ 79.3242 * 2021-Feb-03 00:00 158.39255 31.95925 0.03705334264947 15.410 3.402 155.0935 /L 54.8/ 69.4105 2021-Feb-04 00:00 142.78314 28.44275 0.04142576776678 15.287 3.072 166.9580 /L 79.3/ 58.4687 2021-Feb-05 00:00 131.54483 24.56610 0.04775036466470 15.533 3.014 168.9733 /T 102.1/ 47.0930 2021-Feb-06 00:00 123.64751 21.14926 0.05537487397209 16.051 3.199 163.6664 /T 122.8/ 35.8975 2021-Feb-07 00:00 118.00620 18.36275 0.06384624499414 16.546 3.370 157.9319 /T 141.4/ 25.4778 2021-Feb-08 00:00 113.86180 16.13754 0.07287916464973 16.982 3.501 153.0300 /T 157.8/ 16.3756 2021-Feb-09 00:00 110.73000 14.35826 0.08229690139175 17.364 3.603 148.9312 /T 169.0/ 9.0427 2021-Feb-10 00:00 108.30391 12.92181 0.09198799805048 17.703 3.684 145.4688 /T 163.1/ 3.8081

Setups



CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           no hopping
Bandwidth:               5000 Hz 
TXoffset                 +500 Hz
FFT                      5000 for 1 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            511
ncoh              4
bandwidth       489.2 Hz   
FFT             128
resolution        3.8 Hz
TXoffset       +100 Hz  (echo in column 91)
---------------------------------------------------------------------

Instructions

NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/1998ok1/raw/

POINTING:

  OSOD and predicts will be on aardvark:

/export/data3/osod/ops/a363024/EPH.OUT.s49
/export/data3/osod/ops/a363024/PRDX.OUT.14f-14-14.s49
/export/data3/osod/ops/a363024/PRDX.OUT.14v-14-14.s49
/export/data3/osod/ops/a363024/PUNCH.OUT.14f-14-14.s49
/export/data3/osod/ops/a363024/PUNCH.OUT.14v-14-14.s49


POINTING MACRO 
                                                   TX Offsets    
Date (UTC)  DOY hhmmss  RA        Dec    Macro    LHA      Dec      RTT  OSOD

...Not available yet...

Transmit offsets are given in millidegrees.  



PRDX.OUT.14f-14-14.49 TARGET IS A#0000 ET-UT(FIRST POINT) = 69.182398682 ET-UT1(FIRST POINT) = 69.357566315 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER AZI DEC RA EL D-DOP D-RANGE ...Not available yet...

1998 OK1 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup code ncoh FFT runs start -stop OSOD offset Notes
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/1998OK1/1998ok1.2021.goldstone.planning.html

Asteroid Radar Astronomy
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