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 about 1 km in diameter and it is an optically-dark B-class object. 1988 XB will approach within 0.066 au on November 22 when SNRs at Goldstone should be strong enough for moderate-resolution imaging at 37.5 m or 75 m resolutions. Observations are scheduled at Goldstone on 14 dates between November 17-December 1, although time on many of those dates will be share with 2000 WO107 and 2017 WJ16. 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 lunar distances (0.013 au) on November 23, 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. Fortunately, this object should be recovered in mid-November, so the orbital uncertainties are likely be small by the time of the Goldstone 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 or finer. 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 approach is the closest by this asteroid until November, 2040, when it will fly by within 0.021 au. 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 0.013 au 0.029 au Close approach dist. 25.8 LD 5.0 LD 11.3 LD Close approach date 2020 Nov 22 2020 Nov 23 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 0.0082 au 0.0031 absolute magnitude (H) 18.6 24.3 19.3 diameter 1.2 km ~40 meters 0.5 km optical albedo dark unknown 0.13 rotation period unknown unknown unknown lightcurve amplitude unknown unknown unknown pole direction unknown unknown unknown spectral class B unknown X PHA? Yes No Yes Last update: 2020 October 23
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
1988 XB Goldstone SNRs SNRs assume Ptx = 450 kW and D = 1.1 km (based on previous radar results), P = 2.2 h, radar albedo = 0.1, Tsys = 17 K. w DOY start date window RA, dec dist runs SNR/day SNR/run 46 317 2020 Nov 12 15:15-20:48 205, -22 0.094 107 26 3 46 318 2020 Nov 13 14:52-20:38 202, -21 0.089 117 33 3 46 319 2020 Nov 14 14:28-20:28 199, -20 0.085 129 42 4 46 320 2020 Nov 15 14:02-20:18 195, -18 0.081 141 53 5 47 321 2020 Nov 16 13:34-20:07 192, -16 0.077 155 67 6 47 322 2020 Nov 17 13:05-19:56 187, -14 0.074 169 82 7 Scheduled 47 323 2020 Nov 18 12:35-19:44 183, -12 0.071 183 99 8 Scheduled 47 324 2020 Nov 19 12:03-19:31 179, -10 0.069 197 120 9 Scheduled 47 325 2020 Nov 20 11:31-19:18 174, -7 0.068 211 130 10 Scheduled 47 326 2020 Nov 21 10:58-19:05 169, -4 0.067 223 140 11 Scheduled 47 327 2020 Nov 22 10:26-18:51 164, -1 0.066 233 150 11 Scheduled 48 328 2020 Nov 23 09:53-18:37 159, +2 0.066 240 150 11 48 329 2020 Nov 24 09:22-18:22 155, +5 0.067 245 150 10 Scheduled 48 330 2020 Nov 25 08:52-18:07 150, +7 0.069 246 140 10 Scheduled 48 331 2020 Nov 26 08:23-17:52 145, +10 0.071 245 130 9 Scheduled Thanksgiving! 48 332 2020 Nov 27 07:55-17:38 141, +12 0.073 242 110 8 Scheduled 48 333 2020 Nov 28 07:29-17:23 137, +14 0.076 237 96 7 Scheduled 48 334 2020 Nov 29 07:05-17:09 133, +16 0.080 231 81 6 Scheduled 49 335 2020 Nov 30 06:42-16:56 130, +18 0.084 223 67 5 Scheduled 49 336 2020 Dec 01 06:21-16:43 126, +19 0.088 215 56 4 Scheduled 49 337 2020 Dec 02 06:01-16:30 123, +21 0.092 207 46 3 49 338 2020 Dec 03 05:42-16:17 121, +22 0.097 199 38 3 49 339 2020 Dec 04 05:25-16:06 118, +23 0.102 191 31 2 Goldstone has only one klystron but full power may be available in time for these observations. Otherwise SNRs will be about 1/2 of values above. 1988 XB ARECIBO SNRs 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 a cable failure in Aug. 2020 and the date when it will return to service is unknown.
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 07:55-17:04 127, +6 0.021 805 54 2 47 323 2020 Nov 18 07:29-17:00 124, +10 0.019 931 84 3 47 324 2020 Nov 19 06:58-16:54 120, +15 0.017 1084 130 4 el > 75 deg: None 47 325 2020 Nov 20 06:20-16:46 115, +21 0.015 1264 200 6 Scheduled el > 75 deg: 1110-1155 47 326 2020 Nov 21 05:35-16:34 109, +28 0.014 1464 300 8 Scheduled el > 75 deg: 1000-1205 47 327 2020 Nov 22 04:39-16:15 100, +36 0.013 1660 390 10 Scheduled el > 75 deg: 0910-1135 48 328 2020 Nov 23 03:30-15:44 89, +44 0.013 1816 450 12 el > 75 deg: 0825-1035 48 329 2020 Nov 24 02:10-14:59 74, +50 0.013 1892 440 11 el > 75 deg: 0800-0850 48 330 2020 Nov 25 00:45-14:00 58, +54 0.014 1862 360 9 Scheduled el > 75 deg: None 48 330-331 2020 Nov 25-26 23:27-12:56 41, +55 0.015 1738 260 7 48 331-332 2020 Nov 26-27 22:27-11:56 28, +54 0.016 1565 180 5 48 332-333 2020 Nov 27-28 21:43-11:05 17, +52 0.018 1385 120 3 48 333-334 2020 Nov 28-29 21:13-10:24 9, +50 0.020 1222 76 2 48 334-335 2020 Nov 29-30 20:52-09:51 3, +48 0.022 1083 50 2 2017 WJ16 Arecibo SNRs 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 1440 1510 DSS-14 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 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 1305-1440 0505-0640 Nov 17 1:35 74 3 323 Nov 18 1988 XB 1235-1425 0435-0625 Nov 18 1:50 71 4 324 Nov 19 1988 XB 1200-1530 0400-0730 Nov 19 3:30 69 4 325 Nov 20 2017 WJ16 1135-1405 0335-0605 Nov 20 2:30 15 3 325 Nov 20 1988 XB 1135-1405 0335-0605 Nov 20 2:30 68 5 326 Nov 21 2017 WJ16 1150-1415 0350-0615 Nov 21 2:25 14 4 326 Nov 21 1988 XB 1150-1415 0350-0615 Nov 21 2:25 67 5 327 Nov 22 2017 WJ16 1135-1410 0335-0610 Nov 22 2:35 13 5 327 Nov 22 1988 XB 1135-1410 0335-0610 Nov 22 2:35 66 5 329 Nov 24 1988 XB 1140-1530 0340-0730 Nov 24 3:50 67 5 330 Nov 25 2017 WJ16 0650-1330 2250-0530 Nov 24-25 6:40 14 4 330 Nov 25 1988 XB 0855-1330 0055-0530 Nov 25 4:35 69 5 Overlaps 2017 WJ16 330 Nov 25 2020 SO 0650-1120 2250-0320 Nov 24-25 4:30 4 8 Bistatic SNR; DSS-13 not scheduled 331 Nov 26 1988 XB 1155-1355 0355-0555 Nov 26 2:00 71 4 THANKSGIVING 332 Nov 27 2000 WO107 1040-1405 0240-0605 Nov 27 3:35 37 13 332 Nov 27 1988 XB 1040-1405 0240-0605 Nov 27 3:35 73 4 Overlaps 2000 WO107 332 Nov 27 2020 SO 1040-1125 0240-0325 Nov 27 0:45 3 22 Bistatic SNR; DSS-13 not scheduled 333 Nov 28 2000 WO107 0920-1345 0120-0545 Nov 28 4:25 30 26 333 Nov 28 1988 XB 0920-1345 0120-0545 Nov 28 4:25 76 3 Overlaps 2000 WO107 333 Nov 28 2020 SO 0920-1205 0120-0405 Nov 28 2:45 3 42 Bistatic SNR; DSS-13 not scheduled 334 Nov 29 2000 WO107 0900-1400 0100-0600 Nov 29 5:00 29 30 334 Nov 29 1988 XB 0900-1400 0100-0600 Nov 29 5:00 80 3 Overlaps 2000 WO107 334 Nov 29 2020 SO 0900-1245 0100-0445 Nov 29 3:45 2 120 Bitatic SNR; DSS-13 not scheduled 335 Nov 30 2000 WO107 0500-1340 2100-0540 Nov 29-30 8:40 33 18 335 Nov 30 1988 XB 0645-1340 2245-0540 Nov 29-30 6:55 84 2 Overlaps 2000 WO107 335 Nov 30 2020 SO 0500-1340 2100-0540 Nov 29-30 8:40 1 3100 Monostatic SNR 335 Nov 30 2020 SO 0500-1340 2100-0540 Nov 29-30 8:40 1 770 Bistatic SNR: Receive at DSS-13. SCHEDULED 336 Dec 01 2000 WO107 1120-1335 0320-0535 Dec 01 2:15 42 8 336 Dec 01 1988 XB 1120-1335 0320-0535 Dec 01 2:15 88 2 Overlaps 2000 WO107 Arecibo tracks: UT UT PST Round-trip Date TX Window TX Window time (sec) ...Not available yet...and we don't know if Arecibo will be operating...
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 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 We need astrometry for this asteroid. - - - - - - - - - - - 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-10 00:00 212.84686 -24.46540 0.10902764630490 26. n.a. 13.9312 /L 64.5/ 34.7085 2020-Nov-11 00:00 210.36194 -23.72079 0.10342283529064 25. n.a. 16.4112 /L 48.7/ 24.3122 2020-Nov-12 00:00 207.65316 -22.84177 0.09807950288809 24. n.a. 19.3791 /L 32.9/ 14.9954 2020-Nov-13 00:00 204.70579 -21.80809 0.09302135481990 23. n.a. 22.7870 /L 18.9/ 7.4590 2020-Nov-14 00:00 201.50673 -20.59794 0.08827659122413 22. n.a. 26.6115 /L 16.2/ 2.3479 2020-Nov-15 00:00 198.04595 -19.18899 0.08387833139891 21. n.a. 30.8444 /L 29.2/ 0.1220 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-05 00:00 140.28816 -13.61920 0.05118520301799 21.427 n.a. 77.1906 /L 61.1/ 83.4521 2020-Nov-06 00:00 139.80356 -12.96904 0.04870079691579 21.256 n.a. 78.6880 /L 50.9/ 75.4866 2020-Nov-07 00:00 139.28016 -12.25130 0.04621186608601 21.078 n.a. 80.2522 /L 41.4/ 66.3166 2020-Nov-08 00:00 138.70912 -11.45392 0.04372010271235 20.891 n.a. 81.8962 /L 33.8/ 56.2137 2020-Nov-09 00:00 138.07954 -10.56185 0.04122773653970 20.695 n.a. 83.6361 /L 30.1/ 45.5284 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
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 255 ncoh 16 bandwidth 245 Hz FFT 128 resolution 1.9 Hz TXoffset +50 Hz (echo in column 116) ---------------------------------------------------------------------
Instructions
NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/1988xb/raw/
POINTING:
OSOD and predicts will be on aardvark: ...not available yet... POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD ... to be added ... Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.?? TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
1988 XB GOLDSTONE MASTERLOG
============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln 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 http://echo.jpl.nasa.gov/asteroids/1988XB/1988xb.2020.goldstone.planning.html
Asteroid Radar Astronomy