Goldstone Radar Observations Planning: 2012 BA35, 2021 PP, and 2021 PJ1
2012 BA35 2012 BA35 is an object in the realm of 60 meters in diameter that will approach within 7 lunar distances (0.018 au) on 2021 August 11. Nothing else is known about its physical properties. This asteroid was discovered by Pan-STARRS 1 in January, 2012. We expect signal-to-noise ratios strong enough for CW and ranging echoes but probably not strong enough for delay-Doppler imaging. Update on August 9: Radar echoes obtained on August 8 hint that the the rotation period is between 2-4 hours. 2012 BA35 has an orbit similar to Earth's and is on the NHATS list of mission-accessible targets. 2021 PP 2021 PP was discovered on August 3, 2021 by ATLAS-Mauna Loa. This object is roughly 50 meters in diameter and will approach within 4 lunar distances on August 8, when it will be a strong radar target suitable for high-resolution delay-Doppler imaging. The August 8 view period overlaps the first track on that date scheduled for 2012 BA35 and we may devote the time to 2021 PP instead, which could be a significantly stronger target. Other than its absolute magnitude of 24.1, nothing else is known about the physical properties of this object. 2021 PP is on the NHATS list of potentially mission-accessible targets. 2021 PJ1 2021 PJ1 will approach within 4.3 lunar distances (0.011 au) on August 15. This asteroid has an absolute magnitude of 26.0, suggesting a diameter of about 22 meters, and it was discovered on August 4 by Pan-STARRS 1. Nothing else is known about its physical properties. The view periods overlap time already scheduled for 2012 BA35 on August 13-14 and we may devote some of the time to observe PJ1 instead. 2021 PJ1 is on the NHATS list of potentially mission-accessible targets.
Orbital and Physical Characteristics Name 2012 BA35 2021 PP 2021 PJ1 Asteroid number not numbered not numbered not numbered Discoverer Pan-STARRS 1 ATLAS-Mauna Loa Pan-STARRS 1 Discovery date 2012 Jan 25 2021 Aug 3 2021 Aug 4 Orbit type Apollo Apollo Apollo Close approach distance 0.0176 au 0.010 au 0.011 au Close approach distance 6.8 lunar distances 3.9 lunar distances 4.3 lunar distances Close approach date 2021 Aug 11 2021 Aug 8 2021 Aug 15 semimajor axis 1.072 au 1.369 au 1.208 au eccentricity 0.118 0.358 0.342 inclination 5.7 deg 3.3 deg 0.38 deg Orbital period 1.11 y 1.60 y 1.33 y perihelion distance 0.945 au 0.879 au 0.794 au aphelion distance 1.198 au 1.859 au 1.621 au MOID 0.0176 au 0.0108 au 0.0054 au absolute magnitude (H) 23.8 24.1 26.0 diameter ~60 meters ~50 meters ~22 meters optical albedo unknown unknown unknown rotation period unknown unknown unknown lightcurve amplitude unknown unknown unknown spectral class unknown unknown unknown PHA? No No No Last update: 2021 August 12
2012 BA35 https://www.minorplanetcenter.net/mpec/K12/K12B64.html 2021 PP https://www.minorplanetcenter.net/mpec/K21/K21P29.html 2021 PJ1 https://www.minorplanetcenter.net/mpec/K21/K21P45.html
Goldstone SNRs 2012 BA35 2012 BA35: D = 0.06 km, P = 0.5 h, OC albedo = 0.1 w DOY start date window RA, dec dist runs SNR/day SNR/run 30 213-214 2021 Aug 01-02 21:16-11:36 260, +57 0.028 934 38 1 31 214-215 2021 Aug 02-03 20:44-11:24 255, +59 0.026 1024 50 2 31 215-216 2021 Aug 03-04 20:06-11:08 249, +62 0.025 1128 65 2 31 216-217 2021 Aug 04-05 19:19-10:45 241, +64 0.023 1245 86 3 31 217-218 2021 Aug 05-06 18:23-10:11 231, +65 0.022 1370 110 3 31 218-219 2021 Aug 06-07 17:20-09:19 218, +67 0.020 1486 140 4 31 219-220 2021 Aug 07-08 16:16-08:09 203, +66 0.019 1566 180 5 * Scheduled Aug 8 0155-0325 31 220-221 2021 Aug 08-09 15:20-06:46 188, +65 0.018 1586 210 6 * Scheduled Aug 8 1520-1715 32 221-222 2021 Aug 09-10 14:41-05:25 174, +61 0.018 1552 240 7 32 222-223 2021 Aug 10-11 14:15-04:13 163, +57 0.018 1484 250 7 32 223-224 2021 Aug 11-12 13:58-03:13 154, +51 0.018 1395 240 7 el > 75 deg 32 224-225 2021 Aug 12-13 13:48-02:24 147, +45 0.018 1294 210 6 * 1915-2115 Scheduled 1345-1530,2245-0140 32 225-226 2021 Aug 13-14 13:42-01:43 142, +38 0.019 1186 180 6 * 1835-2100 Scheduled 1340-1820,2035-2205 32 226-227 2021 Aug 14-15 13:38-01:08 138, +33 0.020 1077 140 5 1820-2036 32 227-228 2021 Aug 15-16 13:36-00:38 135, +27 0.021 973 110 4 33 228-229 2021 Aug 16-17 13:34-00:13 132, +22 0.022 876 84 3 33 229 2021 Aug 17 13:33-23:50 130, +18 0.024 789 63 2 33 230 2021 Aug 18 13:32-23:30 129, +14 0.025 711 47 2 33 231 2021 Aug 19 13:31-23:12 127, +11 0.027 643 35 1 The SNRs should be sufficient to detect echoes even if the rotation period is as fast as a few minutes (assuming D ~ 60 m and the radar albedo >=0.1).
2021 PP 2021 PP: D = 0.05 km, P = 0.5 h, OC albedo = 0.1 start date window RA, dec dist runs SNR/day SNR/run 2021 Aug 4 01:15-11:15 289, +15 0.026 692 27 1 2021 Aug 5 00:52-11:17 287, +20 0.022 872 59 2 2021 Aug 6 00:19-11:20 284, +27 0.018 1148 140 5 2021 Aug 6- 7 23:27-11:23 278, +39 0.014 1580 370 10 2021 Aug 7- 8 21:54-11:14 264, +55 0.011 2229 880 20 * Overlaps 2012 BA35 2021 Aug 8- 9 18:32-08:58 224, +69 0.011 3009 1300 26 2021 Aug 9-10 14:01-04:35 166, +66 0.012 2536 870 19 2021 Aug 10-11 13:08-02:26 142, +52 0.014 1753 370 10 2021 Aug 11-12 13:03-01:23 133, +42 0.018 1271 140 4 2021 Aug 12-13 13:03-00:47 129, +35 0.022 972 58 2 2021 Aug 13-14 13:02-00:22 127, +30 0.027 776 27 1 * Overlaps 2012 BA35
2021 PJ1 2021 PJ1: D = 0.022 km, P = 0.5 h, OC albedo = 0.1 DOY start date window RA, dec dist runs SNR/day SNR/run 224 2021 Aug 12 01:23-09:32 285, -3 0.019 780 24 1 225 2021 Aug 13 00:28-08:59 275, +2 0.015 1036 62 2 225-226 2021 Aug 13-14 23:09-08:07 259, +8 0.012 1381 150 4 Overlaps 2012 BA35 226-227 2021 Aug 14-15 21:19-06:49 237, +17 0.011 1666 250 7 Overlaps 2012 BA35 227-228 2021 Aug 15-16 19:18-05:18 211, +22 0.012 1634 190 5 228-229 2021 Aug 16-17 17:40-04:01 191, +24 0.014 1361 89 3 229-230 2021 Aug 17-18 16:36-03:06 177, +24 0.018 1080 36 1
Track Assignments
DOY BOA BOT EOT EOA 220 0025 0155 0325 0355 GSSR Ast 2012 BA35 & 2021 PP 220 1350 1520 1715 1745 GSSR Ast 2012 BA35 225 1215 1345 1530 1600 GSSR Ast 2012 BA35 225 2115 2245 0140 0210 GSSR Ast 2012 BA35 & 2021 PJ1 226 1210 1340 1820 1850 GSSR Ast 2012 BA35 226 1905 2035 2205 2235 GSSR Ast 2012 BA35 & 2021 PJ1 Goldstone tracks: UT UT PDT Duration Round-trip DOY Date Target TX Window TX Window hh:mm time (sec) SNR/run Observer 220 Aug 8 2012 BA35 0155-0325 1855-2025 Aug 7 1:30 19 5 Naidu 220 Aug 8 2021 PP 0155-0325 1855-2025 Aug 7 1:30 11 20 Try to start early The schedule above was WRONG. Actual times: 2310-0040 on Aug 7-8. 220 Aug 8 2012 BA35 1520-1715 0820-1015 Aug 8 2:50 18 6 Benner 223 Aug 11 Perseids 1200-1500 0500-0800 Aug 11 3:00 Benner 224 Aug 12 Perseids 1200-1430 0500-0730 Aug 12 2:30 Benner 225 Aug 13 2012 BA35 1345-1530 0645-0830 Aug 13 1:45 19 6 Benner 225-226 Aug 13-14 2012 BA35 2245-0140 1545-1840 Aug 13 2:55 19 6 Naidu 225-226 Aug 13-14 2021 PJ1 2310-0140 1610-1840 Aug 13 2:30 12 4 226 Aug 14 2012 BA35 1340-1820 0640-1120 Aug 14 5:40 20 6 Benner 226 Aug 14 2012 BA35 2035-2205 1335-1505 Aug 14 1:30 20 6 Naidu 226 Aug 14 2021 PJ1 2120-2205 1420-1505 Aug 14 0:45 11 7 The gap in the schedule on Aug 14 is due to elevations above 75 deg, where tracking is difficult.
Uncertainties
2012 BA35 JPL/Horizons solution 23, # obs: 104 (2011-2021) 2021 August 6 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-05 00:00 *m 242.01822 62.42981 0.02335648178872 0.887 0.81 0.000128 2021-Aug-06 00:00 *m 232.20479 64.23742 0.02185002463478 0.977 0.89 0.000127 2021-Aug-07 00:00 *m 219.72849 65.38973 0.02050817342541 1.085 1.00 0.000125 2021-Aug-08 00:00 *m 204.97712 65.36941 0.01936802328606 1.212 1.15 0.000122 2021-Aug-09 00:00 *m 189.52552 63.71490 0.01847010927764 1.353 1.35 0.000118 2021-Aug-10 00:00 *m 175.42099 60.30289 0.01785443811226 1.498 1.56 0.000111 2021-Aug-11 00:00 *m 163.85112 55.42259 0.01755439454206 1.630 1.75 0.000103 2021-Aug-12 00:00 *m 154.87830 49.59165 0.01758998137874 1.729 1.88 0.000095 2021-Aug-13 00:00 *m 148.03113 43.35021 0.01796315517975 1.783 1.93 0.000086 2021-Aug-14 00:00 *m 142.77708 37.14465 0.01865765318160 1.787 1.89 0.000079 2021-Aug-15 00:00 *m 138.68670 31.28348 0.01964336656404 1.749 1.77 0.000074 JPL/Horizons solution 13, # obs: 57 (2011-2021), OCC = 0 2021 July 7 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-05 00:00 *m 242.01829 62.42963 0.02335648914208 8.445 3.13 0.000274 2021-Aug-06 00:00 *m 232.20495 64.23723 0.02185002762580 9.097 3.83 0.000257 2021-Aug-07 00:00 *m 219.72876 65.38955 0.02050817135306 9.772 4.65 0.000237 2021-Aug-08 00:00 *m 204.97751 65.36924 0.01936801544236 10.430 5.54 0.000214 2021-Aug-09 00:00 *m 189.52599 63.71477 0.01847009503857 11.013 6.42 0.000194 2021-Aug-10 00:00 *m 175.42146 60.30280 0.01785441706214 11.444 7.15 0.000183 2021-Aug-11 00:00 *m 163.85154 55.42253 0.01755436659833 11.652 7.59 0.000190 2021-Aug-12 00:00 *m 154.87867 49.59161 0.01758994686015 11.592 7.63 0.000216 2021-Aug-13 00:00 *m 148.03145 43.35018 0.01796311477088 11.267 7.28 0.000255 2021-Aug-14 00:00 *m 142.77735 37.14462 0.01865760780077 10.731 6.65 0.000300 2021-Aug-15 00:00 *m 138.68693 31.28344 0.01964331719542 10.060 5.87 0.000343 JPL/Horizons solution 12, # obs: 55 (2011-2012), OCC = 3 2021 May 25 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-05 00:00 *m 242.03600 62.46116 0.02335291236453 3864.800 970.18 0.117514 2021-Aug-06 00:00 *m 232.21007 64.27222 0.02184673748363 4159.911 1304.48 0.108082 2021-Aug-07 00:00 *m 219.71335 65.42665 0.02050527100692 4467.458 1698.63 0.095256 2021-Aug-08 00:00 *m 204.93628 65.40561 0.01936562409746 4770.658 2137.36 0.078511 * 2021-Aug-09 00:00 *m 189.46286 63.74681 0.01846834107068 5042.988 2583.17 0.057545 2021-Aug-10 00:00 *m 175.34821 60.32816 0.01785342434316 5249.882 2974.81 0.032508 2021-Aug-11 00:00 *m 163.77891 55.44099 0.01755423532029 5356.307 3240.68 0.004183 2021-Aug-12 00:00 *m 154.81209 49.60443 0.01759073477400 5339.161 3327.46 0.026047 2021-Aug-13 00:00 *m 147.97243 43.35905 0.01796482727939 5197.683 3227.12 0.056446 * 2021-Aug-14 00:00 *m 142.72558 37.15110 0.01866020178868 4954.025 2979.70 0.085424 * 2021-Aug-15 00:00 *m 138.64152 31.28866 0.01964671580434 4643.504 2650.13 0.111873
2021 PP JPL/Horizons solution 2, # obs: 102 (3 days) 2021 August 6 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-05 00:00 *m 287.87874 18.13593 0.02290799901566 0.990 1094.61 0.054847 2021-Aug-06 00:00 *m 284.99971 25.03293 0.01857570762219 1.762 1009.93 0.044327 2021-Aug-07 00:00 *m 279.78201 35.63921 0.01472990424786 7.593 844.09 0.035018 2021-Aug-08 00:00 *m 267.77745 51.71053 0.01184661410047 25.259 510.93 0.028108 * 2021-Aug-09 00:00 *m 227.81444 68.83975 0.01072836869009 53.738 106.81 0.025556 2021-Aug-10 00:00 *m 161.97500 64.22371 0.01188455650041 67.497 578.46 0.028597 2021-Aug-11 00:00 *m 139.97474 50.35696 0.01479365552344 62.028 879.13 0.035908 2021-Aug-12 00:00 *m 132.14734 40.33973 0.01865716250082 52.601 1029.38 0.045482 2021-Aug-13 00:00 *m 128.30000 33.69066 0.02300483228396 44.871 1107.97 0.056182 JPL/Horizons solution 1, # obs: 91 (1 days) 2021 Aug 4 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-05 00:00 *m 287.87877 18.13591 0.02290803914976 1.451 1152.95 0.055235 2021-Aug-06 00:00 *m 284.99996 25.03251 0.01857630923017 10.516 1064.90 0.044761 2021-Aug-07 00:00 *m 279.78317 35.63741 0.01473098733243 43.468 880.08 0.035790 2021-Aug-08 00:00 *m 267.78291 51.70562 0.01184790151464 127.727 516.32 0.029234 * 2021-Aug-09 00:00 *m 227.84504 68.83560 0.01072921290078 252.634 523.01 0.026169 2021-Aug-10 00:00 *m 161.99968 64.23295 0.01188433387990 303.478 922.26 0.028841 2021-Aug-11 00:00 *m 139.98477 50.36785 0.01479231193286 270.758 1084.81 0.037041 2021-Aug-12 00:00 *m 132.15309 40.34925 0.01865487567660 224.751 1159.77 0.047758 2021-Aug-13 00:00 *m 128.30400 33.69879 0.02300174360688 188.553 1203.95 0.059438
2021 PJ1 JPL/Horizons solution 6, # obs: 45 (7 days) 2021 Aug 12 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-12 00:00 *m 287.08642 -3.70159 0.02033197359201 2.156 1130.08 0.051469 2021-Aug-13 00:00 *m 277.55020 0.54036 0.01612251142499 5.211 974.52 0.040878 2021-Aug-14 00:00 *m 262.21988 7.25366 0.01278602812535 12.945 664.45 0.032523 * 2021-Aug-15 00:00 *m 238.76518 16.03897 0.01112817857183 25.145 133.64 0.028413 2021-Aug-16 00:00 *m 211.37656 22.44318 0.01187203530858 30.887 491.39 0.030327 2021-Aug-17 00:00 *m 189.78014 24.10995 0.01465892176588 27.420 883.55 0.037368 2021-Aug-18 00:00 *m 176.04566 23.59166 0.01859749581396 22.588 1084.63 0.047314 2021-Aug-19 00:00 *m 167.45926 22.64303 0.02311419317969 19.077 1188.49 0.058726 2021-Aug-20 00:00 * 161.81516 21.75636 0.02793943348815 16.767 1247.49 0.070923 JPL/Horizons solution 5, # obs: 41 (7 days) 2021 Aug 11 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-12 00:00 *m 287.08642 -3.70164 0.02032958579012 4.443 1217.53 0.054987 2021-Aug-13 00:00 *m 277.55023 0.54028 0.01612062318343 10.482 1047.63 0.043592 2021-Aug-14 00:00 *m 262.21995 7.25353 0.01278453025304 23.828 707.60 0.034641 * 2021-Aug-15 00:00 *m 238.76531 16.03880 0.01112686220626 42.893 149.12 0.030337 2021-Aug-16 00:00 *m 211.37669 22.44304 0.01187060967075 49.401 558.51 0.032598 2021-Aug-17 00:00 *m 189.78022 24.10984 0.01465714870480 41.302 968.74 0.040366 2021-Aug-18 00:00 *m 176.04569 23.59157 0.01859524414407 32.126 1178.19 0.051199 2021-Aug-19 00:00 *m 167.45926 22.64295 0.02311139728157 25.731 1286.44 0.063565 2021-Aug-20 00:00 * 161.81513 21.75629 0.02793605817949 21.591 1348.09 0.076752 JPL/Horizons solution 1, # obs: 27 (2 days) 2021 Aug 6 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Aug-12 00:00 287.03035 -3.65053 0.02038226807597 412.630 1905.55 0.126524 2021-Aug-13 00:00 277.51722 0.58856 0.01618073504768 852.771 1473.41 0.121379 2021-Aug-14 00:00 262.26147 7.27817 0.01284926166263 1706.655 2949.47 0.103894 * 2021-Aug-15 00:00 238.96376 16.02314 0.01118495307911 2772.610 6667.97 0.061127 2021-Aug-16 00:00 211.70540 22.43740 0.01190638401624 2951.702 7440.44 0.053431 2021-Aug-17 00:00 190.10032 24.14217 0.01466811474816 2307.226 5498.66 0.108614 2021-Aug-18 00:00 176.30657 23.64076 0.01858738219028 1680.760 4053.92 0.154774
Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination: 2012 BA35 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Jul-06 00:00 285.19628 31.63817 0.08694621309268 20.519 n.a. 125.6770 /T 111.7/ 14.6201 2021-Jul-07 00:00 284.94637 32.16434 0.08465102468779 20.471 n.a. 125.2372 /T 116.0/ 8.5768 2021-Jul-08 00:00 284.67958 32.69625 0.08236681873122 20.423 n.a. 124.7709 /T 119.1/ 4.0062 2021-Jul-09 00:00 284.39520 33.23476 0.08009315668791 20.374 n.a. 124.2771 /T 120.7/ 1.1144 2021-Jul-10 00:00 284.09240 33.78093 0.07782959289103 20.325 n.a. 123.7546 /T 120.6/ 0.0774 2021-Jul-11 00:00 283.77025 34.33596 0.07557567594138 20.275 n.a. 123.2021 /T 118.9/ 1.0225 2021-Jul-12 00:00 283.42765 34.90129 0.07333095191883 20.224 n.a. 122.6180 /T 115.6/ 4.0090 2021-Jul-13 00:00 283.06331 35.47860 0.07109497028050 20.173 n.a. 122.0005 /T 111.0/ 9.0127 2021-Jul-14 00:00 282.67565 36.06986 0.06886729321247 20.120 n.a. 121.3475 /T 105.4/ 15.9153 2021-Jul-15 00:00 282.26279 36.67736 0.06664750902342 20.067 n.a. 120.6565 /T 99.2/ 24.4990 2021-Jul-16 00:00 281.82237 37.30376 0.06443525002062 20.013 n.a. 119.9247 /T 92.7/ 34.4459 2021-Jul-17 00:00 281.35149 37.95214 0.06223021526417 19.958 n.a. 119.1487 /T 86.2/ 45.3390 2021-Jul-18 00:00 280.84654 38.62604 0.06003219863220 19.903 n.a. 118.3245 /T 80.0/ 56.6667 2021-Jul-19 00:00 280.30302 39.32951 0.05784112260987 19.846 n.a. 117.4476 /T 74.7/ 67.8341 2021-Jul-20 00:00 279.71529 40.06718 0.05565707793509 19.788 n.a. 116.5125 /T 70.5/ 78.1905 2021-Jul-21 00:00 279.07632 40.84428 0.05348036858575 19.730 n.a. 115.5129 /T 67.9/ 87.0794 2021-Jul-22 00:00 278.37733 41.66672 0.05131156077722 19.670 n.a. 114.4415 /T 67.3/ 93.9113 2021-Jul-23 00:00 277.60733 42.54116 0.04915153429397 19.610 n.a. 113.2896 /T 68.6/ 98.2474 2021-Jul-24 00:00 276.75257 43.47505 0.04700153545237 19.550 n.a. 112.0473 /T 71.7/ 99.8664 2021-Jul-25 00:00 275.79579 44.47675 0.04486323367947 19.489 n.a. 110.7025 /T 76.0/ 98.7897 2021-Jul-26 00:00 274.71508 45.55560 0.04273878746662 19.428 n.a. 109.2415 /T 81.1/ 95.2545 2021-Jul-27 00:00 273.48236 46.72201 0.04063092893874 19.368 n.a. 107.6477 /T 86.4/ 89.6468 2021-Jul-28 00:00 272.06117 47.98738 0.03854307843809 19.309 n.a. 105.9014 /T 91.6/ 82.4221 2021-Jul-29 00:00 270.40328 49.36399 0.03647950149777 19.252 n.a. 103.9792 /T 96.2/ 74.0388 2021-Jul-30 00:00 268.44395 50.86434 0.03444552139049 19.198 n.a. 101.8529 /T 99.9/ 64.9170 2021-Jul-31 00:00 266.09456 52.49999 0.03244780196624 19.150 n.a. 99.4887 /T 102.4/ 55.4231 2021-Aug-01 00:00 263.23184 54.27894 0.03049471766997 19.109 n.a. 96.8462 /T 103.4/ 45.8736 2021-Aug-02 00:00 259.68174 56.20074 0.02859682898311 19.080 n.a. 93.8775 /T 102.6/ 36.5502 2021-Aug-03 00:00 255.19659 58.24708 0.02676747855585 19.067 n.a. 90.5264 /T 99.9/ 27.7179 2021-Aug-04 00:00 249.42728 60.36472 0.02502350906382 19.077 n.a. 86.7289 /T 95.4/ 19.6411 2021-Aug-05 00:00 241.90529 62.43571 0.02338606572131 19.121 n.a. 82.4152 /T 89.1/ 12.5950 2021-Aug-06 00:00 232.09170 64.23240 0.02188136439863 19.212 n.a. 77.5158 /T 81.2/ 6.8670 2021-Aug-07 00:00 219.63024 65.37271 0.02054115722149 19.370 n.a. 71.9722 /T 72.1/ 2.7479 2021-Aug-08 00:00 204.91420 65.34278 0.01940240864405 19.623 n.a. 65.7570 /T 62.5/ 0.5108 2021-Aug-09 00:00 189.51054 63.68575 0.01850548572474 20. n.a. 58.9007 /T 53.7/ 0.3800 2021-Aug-10 00:00 175.44820 60.28040 0.01789021344735 21. n.a. 51.5225 /T 47.5/ 2.4962 2021-Aug-11 00:00 163.90447 55.41379 0.01758982873071 21. n.a. 43.8513 /T 46.7/ 6.8840 2021-Aug-12 00:00 154.94363 49.59955 0.01762427741409 22. n.a. 36.2233 /T 52.4/ 13.4305 2021-Aug-13 00:00 148.09986 43.37419 0.01799558282290 24. n.a. 29.0588 /T 63.1/ 21.8806 2021-Aug-14 00:00 142.84483 37.18184 0.01868765535528 25. n.a. 22.8435 /L 76.8/ 31.8473 2021-Aug-15 00:00 138.75154 31.33013 0.01967060783454 27. n.a. 18.1422 /L 91.8/ 42.8345
2021 PP Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Aug-05 00:00 287.78723 18.19479 0.02291515180062 17.680 n.a. 135.6414 /T 133.6/ 12.5950 2021-Aug-06 00:00 284.88170 25.09888 0.01858833009470 17.424 n.a. 128.2380 /T 129.3/ 6.8670 2021-Aug-07 00:00 279.61883 35.70254 0.01474981428796 17.243 n.a. 116.9032 /T 117.0/ 2.7479 2021-Aug-08 00:00 267.53170 51.72944 0.01187533248871 17.343 n.a. 99.1718 /T 96.2/ 0.5108 * 2021-Aug-09 00:00 227.61292 68.72888 0.01076335494037 18.186 n.a. 74.7218 /T 69.6/ 0.3800 2021-Aug-10 00:00 162.24525 64.16837 0.01191811721914 20. n.a. 50.9463 /T 49.9/ 2.4962 2021-Aug-11 00:00 140.17229 50.38092 0.01482141753382 22. n.a. 35.1247 /L 48.7/ 6.8840 2021-Aug-12 00:00 132.28600 40.38481 0.01867918302346 24. n.a. 26.7775 /L 59.3/ 13.4305
2021 PJ1 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Aug-06 00:00 306.19069 -11.60580 0.05061265998781 20.288 n.a. 169.0184 /T 155.6/ 6.8670 2021-Aug-07 00:00 304.73541 -11.04624 0.04532512531079 20.121 n.a. 166.7702 /T 165.3/ 2.7479 2021-Aug-08 00:00 302.91658 -10.33555 0.04010166335329 19.938 n.a. 164.0926 /T 165.0/ 0.5108 2021-Aug-09 00:00 300.58332 -9.40495 0.03495662749520 19.736 n.a. 160.8346 /T 153.8/ 0.3800 2021-Aug-10 00:00 297.49122 -8.14036 0.02991563104650 19.515 n.a. 156.7359 /T 139.1/ 2.4962 2021-Aug-11 00:00 293.22343 -6.34283 0.02502626867374 19.276 n.a. 151.3397 /T 122.3/ 6.8840 2021-Aug-12 00:00 287.03035 -3.65053 0.02038226807597 19.033 n.a. 143.8138 /T 103.3/ 13.4305 2021-Aug-13 00:00 277.51722 0.58856 0.01618073504768 18.832 n.a. 132.6175 /T 81.2/ 21.8806 2021-Aug-14 00:00 262.26147 7.27817 0.01284926166262 18.823 n.a. 115.2306 /T 55.4/ 31.8473 * 2021-Aug-15 00:00 238.96376 16.02314 0.01118495307910 19.386 n.a. 90.0801 /T 34.4/ 42.8345 2021-Aug-16 00:00 211.70540 22.43740 0.01190638401624 20.949 n.a. 62.8950 /T 47.7/ 54.2660 2021-Aug-17 00:00 190.10032 24.14217 0.01466811474816 23. n.a. 42.3512 /T 75.2/ 65.5197 2021-Aug-18 00:00 176.30657 23.64076 0.01858738219028 26. n.a. 29.1774 /T 99.6/ 75.9665 2021-Aug-19 00:00 167.66794 22.69451 0.02308990747967 28. n.a. 20.7596 /T 120.5/ 85.0162 2021-Aug-20 00:00 161.98573 21.80525 0.02790414599382 31. n.a. 15.2189 /T 139.2/ 92.1689
Setups
We know nothing about the rotation periods of 2021 PP or 2012 BA35, so we will start with a standard CW setup with a resolution of 1 Hz. CW setup: --------------------------------------------------------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: no hopping Bandwidth: 5000 Hz TXoffset +500 Hz FFT 5000 for 1.0 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 8 bandwidth 490 Hz FFT 128 resolution 3.8 Hz TXoffset +50 Hz (echo in column 77) ---------------------------------------------------------------------
Instructions
NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/2012ba35/raw/
POINTING:
OSOD and predicts are on aardvark: POINTING ...Not yet available... Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s?? TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 BA35 GOLDSTONE MASTERLOG
============================================================================== ----------------------------------------------------- ...Not yet available... -----------------------------------------------------
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/2012BA35/2012BA35.2021.goldstone.planning.html
Asteroid Radar Astronomy