2100 Ra-Shalom (1978 RA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4364955679 ± 2.00e+00
Semi-major axis (a)0.8320181223 AU ± 3.00e+00
Inclination (i)15.75890506° ± 4.00e+00
Long. of Asc. Node (Ω)170.76329799° ± 5.00e+00
Arg. of Perihelion (ω)356.08164717° ± 6.00e+00
Mean Anomaly (M)249.10870172° ± 4.17e-06
Mean Motion (n)1.2987127297°/day ± 7.02e+00
Perihelion dist (q)0.46884590 AU ± 2.37e+00
Aphelion dist (Q)1.19519035 AU ± 4.62e+00
Orbital Period0.75892556 yr ± 4.10e+00
NGA Modelr2
A2-1.01979994e-06 AU/d²
Physical Parameters
H (abs. magnitude)16.24
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.161″
Uncertainty0
Orbit TypeAten
MOID0.149239 AU
Observations Used5029
Radar Obs Used6
Gaia Obs Used44
Oppositions13
Arc Total1975-2026
First Observation Used1975-10-03
Last Observation Used2026-01-06
Observations (5346)
Date Type RA Dec Mag Band Observatory
2000-08-29 05:24:31 C 23 24 04.66 +17 02 51.1 642
2000-08-29 05:27:06 C 23 24 04.14 +17 02 42.8 642
2000-08-29 05:29:41 C 23 24 03.67 +17 02 34.3 642
2000-08-29 05:32:16 C 23 24 03.14 +17 02 26.1 642
2000-08-29 16:18:56 C 23 21 53.56 +16 26 59.5 z 402
2000-08-29 16:20:43 C 23 21 53.18 +16 26 53.3 z 402
2000-08-29 16:22:34 C 23 21 52.80 +16 26 47.2 z 402
2000-08-29 16:28:30 C 23 21 51.40 +16 26 26.6 m 349
2000-08-29 16:29:40 C 23 21 51.13 +16 26 22.9 m 349
2000-08-29 16:31:09 C 23 21 50.84 +16 26 17.6 m 349
2000-08-29 16:32:23 C 23 21 50.59 +16 26 13.8 m 349
2000-08-29 20:57:42 C 23 21 00.24 +16 11 12.0 14.4 c 145
2000-08-29 21:01:01 C 23 20 59.54 +16 11 00.5 14.6 c 145
2000-08-29 21:04:50 C 23 20 58.79 +16 10 48.4 14.6 c 145
2000-08-29 23:20:42 C 23 20 30.85 +16 03 13.4 14.6 c 145
2000-08-29 23:24:36 C 23 20 30.07 +16 03 00.7 14.8 c 145
2000-08-29 23:27:58 C 23 20 29.37 +16 02 49.2 14.4 c 145
2000-08-29 23:31:37 C 23 20 28.58 +16 02 36.5 14.7 c 145
2000-08-29 23:35:43 C 23 20 27.74 +16 02 22.9 14.8 c 145
2000-08-31 21:29:10 C 23 11 15.36 +13 22 29.2 d 049
2000-08-31 21:33:10 C 23 11 14.52 +13 22 15.0 d 049
2000-08-31 21:37:21 C 23 11 13.66 +13 22 00.1 d 049
2000-09-01 06:34:24 C 23 09 24.65 +12 49 59.9 14.8 c 704
2000-09-01 06:55:33 C 23 09 20.12 +12 48 43.6 c 704
2000-09-01 07:16:01 C 23 09 15.79 +12 47 29.4 16.1 c 704
2000-09-01 07:36:21 C 23 09 11.42 +12 46 15.7 15.7 c 704
2000-09-01 07:58:07 C 23 09 06.74 +12 44 56.7 c 704
2000-09-02 03:36:00 C 23 05 09.03 +11 32 50.4 i 739
2000-09-02 03:37:31 C 23 05 08.70 +11 32 44.7 i 739
2000-09-02 03:39:08 C 23 05 08.38 +11 32 39.0 i 739
2000-09-02 03:40:58 C 23 05 08.01 +11 32 32.2 i 739
2000-09-02 13:39:12 C 23 03 05.10 +10 55 28.9 m 349
2000-09-02 13:40:07 C 23 03 04.89 +10 55 25.4 m 349
2000-09-02 13:41:04 C 23 03 04.70 +10 55 21.7 m 349
2000-09-02 13:43:16 C 23 03 04.22 +10 55 13.6 m 349
2000-09-03 16:00:02 C 22 57 40.57 +09 15 53.4 z 355
2000-09-03 16:03:31 C 22 57 39.81 +09 15 40.0 z 355
2000-09-03 16:07:28 C 22 57 38.96 +09 15 24.9 z 355
2000-09-03 21:55:56 C 22 56 29.02 +08 53 03.1 056
2000-09-03 22:11:55 C 22 56 25.63 +08 52 01.3 056
2000-09-04 20:13:10 C 22 51 57.54 +07 27 04.1 14.0 635
2000-09-04 20:16:22 C 22 51 56.91 +07 26 51.7 635
2000-09-04 20:19:34 C 22 51 56.24 +07 26 39.2 635
2000-09-04 20:25:45 C 22 51 54.89 +07 26 15.2 635
2000-09-04 20:29:03 C 22 51 54.19 +07 26 01.9 635
2000-09-04 20:35:04 C 22 51 52.93 +07 25 38.8 635
2000-09-04 20:39:04 C 22 51 52.10 +07 25 23.1 635
2000-09-05 05:17:58 C 22 50 06.29 +06 51 42.6 642
2000-09-05 05:20:55 C 22 50 05.53 +06 51 36.2 642
2000-09-05 05:23:54 C 22 50 05.04 +06 51 19.2 642
Radar Observations (17)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1981-08-25 02:00:00 -18021.4 1 Hz 2380 -1 -1
1981-08-25.083333 -1802140 20 Hz 2380 251 251
1984-08-21 00:00:00 -98092 1 Hz 2380 -1 -1
1984-08-21.000000 -9809200 100 Hz 2380 251 251
2000-08-27 06:00:00 202910964 10 us 2380 -1 -1
2000-08-27.250000 20291096400 10000 us 2380 251 251
2000-08-30 05:00:00 196039017 10 us 2380 -1 -1
2000-08-30.208333 19603901700 10000 us 2380 251 251
2003-08-22 02:10:35 176875273 1.5 us 2380 -1 -1
2003-08-22 02:15:00 176879019.6 0.5 us 2380 -1 -1
2003-08-22.090683 17687527300 1500 us 2380 251 251
2003-08-22.093750 17687901960 500 us 2380 251 251
2016-09-26 08:40:00 178120943.18 10 us 8560 -14 -14
2016-09-27 07:50:00 174259621.3 3 us 8560 -14 -14
2016-09-30 08:50:00 163725075.83 5 us 8560 -14 -14
2019-09-08 06:54:00 206862668.32 6 us 2380 -1 -1
2022-09-03 05:30:00 187861848.74 2 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)