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
2022-09-02 20:21:03 C 22 11 04.38 +09 59 34.5 V C40
2022-09-02 20:22:31 C 22 11 04.08 +09 59 28.6 V C40
2022-09-02 20:23:13 C 22 11 03.94 +09 59 25.7 V C40
2022-09-02 20:23:34 C 22 11 03.87 +09 59 24.3 V C40
2022-09-02 20:24:16 C 22 11 03.72 +09 59 21.5 V C40
2022-09-02 20:24:57 C 22 11 03.57 +09 59 18.6 V C40
2022-09-02 20:25:20 C 22 11 03.50 +09 59 17.1 V C40
2022-09-02 20:26:01 C 22 11 03.36 +09 59 14.3 V C40
2022-09-02 20:26:44 C 22 11 03.21 +09 59 11.5 V C40
2022-09-02 20:28:28 C 22 11 02.85 +09 59 04.3 V C40
2022-09-02 20:29:11 C 22 11 02.70 +09 59 01.3 V C40
2022-09-02 20:30:07 V 22 11 02.83 +09 58 48.3 V 270
2022-09-02 20:30:07 v 1 026.21283 +60.73340 270
2022-09-02 21:08:33 V 22 10 54.98 +09 56 11.0 V 270
2022-09-02 21:08:33 v 1 026.21283 +60.73340 270
2022-09-02 21:44:17 V 22 10 47.72 +09 53 45.9 V 270
2022-09-02 21:44:17 v 1 026.21283 +60.73340 270
2022-09-02 21:52:31 C 22 10 46.58 +09 53 15.9 V L65
2022-09-02 22:52:08 C 22 10 34.37 +09 49 12.9 V L65
2022-09-02 23:29:37 C 22 10 26.69 +09 46 39.8 V L65
2022-09-02 23:58:27 V 22 10 20.63 +09 44 42.0 V 270
2022-09-02 23:58:27 v 1 013.60185 +52.60435 270
2022-09-03 00:23:28 V 22 10 15.52 +09 42 59.8 V 270
2022-09-03 00:23:28 v 1 013.60185 +52.60435 270
2022-09-03 00:54:00 V 22 10 09.32 +09 40 54.8 V 270
2022-09-03 00:54:00 v 1 013.60185 +52.60435 270
2022-09-03 01:14:08 C 22 10 07.76 +09 40 35.3 q 834
2022-09-03 01:21:08 V 22 10 03.90 +09 39 04.0 V 270
2022-09-03 01:21:08 v 1 013.60185 +52.60435 270
2022-09-03 01:36:07 C 22 10 03.23 +09 39 06.1 q 834
2022-09-03 01:44:29 V 22 10 02.32 +09 37 39.7 V 270
2022-09-03 01:44:29 v 1 281.32268 +35.80732 270
2022-09-03 02:02:55 V 22 09 58.19 +09 36 18.3 V 270
2022-09-03 02:02:55 v 1 284.88296 +46.38819 270
2022-09-03 02:10:18 V 22 09 57.03 +09 35 54.8 V 270
2022-09-03 02:10:18 v 1 281.32268 +35.80732 270
2022-09-03 02:16:25 V 22 09 55.48 +09 35 22.1 V 270
2022-09-03 02:16:25 v 1 284.88296 +46.38819 270
2022-09-03 02:28:55 V 22 09 52.92 +09 34 32.7 V 270
2022-09-03 02:28:55 v 1 284.88296 +46.38819 270
2022-09-03 02:40:17 V 22 09 50.87 +09 33 52.9 V 270
2022-09-03 02:40:17 v 1 281.32268 +35.80732 270
2022-09-03 02:41:22 V 22 09 50.40 +09 33 42.0 V 270
2022-09-03 02:41:22 v 1 284.88296 +46.38819 270
2022-09-03 03:06:14 V 22 09 45.52 +09 32 07.4 V 270
2022-09-03 03:06:14 v 1 281.32268 +35.80732 270
2022-09-03 12:31:57 V 22 07 56.38 +08 53 46.2 V 270
2022-09-03 12:31:57 v 1 114.16981 +22.37600 270
2022-09-03 13:10:12 V 22 07 48.64 +08 51 10.5 V 270
2022-09-03 13:10:12 v 1 114.16981 +22.37600 270
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)