138258 (2000 GD2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4767093203 ± 1.67e-07
Semi-major axis (a)0.7577641675 AU ± 3.53e-09
Inclination (i)32.13571947° ± 2.54e-05
Long. of Asc. Node (Ω)358.11192981° ± 2.39e-06
Arg. of Perihelion (ω)16.98570272° ± 1.21e-05
Mean Anomaly (M)97.78126582° ± 9.06e-05
Mean Motion (n)1.4942084181°/day ± 1.04e-08
Perihelion dist (q)0.39653093 AU ± 1.27e-07
Aphelion dist (Q)1.11899741 AU ± 1.27e-07
Orbital Period0.65963106 yr ± 4.61e-09
Physical Parameters
H (abs. magnitude)18.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.528″
Uncertainty0
Orbit TypeAten
MOID0.071521 AU
Observations Used224
Radar Obs Used2
Oppositions2
Arc Total1998-2002
First Observation Used1998-03-29
Last Observation Used2023-05-02
Observations (245)
Date Type RA Dec Mag Band Observatory
2002-03-15 09:00:20 C 13 08 50.12 +22 01 30.6 c 670
2002-03-15 11:14:48 C 13 05 46.83 +21 48 22.5 c 670
2002-03-15 12:57:01 C 13 03 38.32 +21 40 09.5 m 428
2002-03-15 12:58:37 C 13 03 36.17 +21 40 00.5 m 428
2002-03-15 12:59:24 C 13 03 35.11 +21 39 55.4 m 428
2002-03-15 13:00:12 C 13 03 34.01 +21 39 51.0 m 428
2002-03-15 14:15:55 C 13 01 52.59 +21 30 21.2 379
2002-03-15 14:17:51 C 13 01 49.96 +21 30 08.2 379
2002-03-15 16:50:19 C 12 58 22.28 +21 14 41.6 349
2002-03-15 16:51:21 C 12 58 20.92 +21 14 35.1 349
2002-03-15 16:52:34 C 12 58 19.23 +21 14 27.6 349
2002-03-15 16:53:36 C 12 58 17.83 +21 14 21.1 349
2002-03-16 01:06:35 C 12 47 24.04 +20 21 32.4 c 084
2002-03-16 10:02:09 C 12 35 40.67 +19 22 44.2 c 699
2002-03-16 10:21:23 C 12 35 15.10 +19 20 31.4 c 699
2002-03-16 10:40:37 C 12 34 49.55 +19 18 18.1 c 699
2002-03-16 10:59:53 C 12 34 23.98 +19 16 03.9 c 699
2002-03-16 21:05:43 C 12 21 31.78 +18 04 44.6 c 113
2002-03-16 21:06:20 C 12 21 30.99 +18 04 40.4 c 113
2002-03-16 21:06:58 C 12 21 30.19 +18 04 36.0 c 113
2002-03-16 21:07:38 C 12 21 29.33 +18 04 31.2 c 113
2002-03-16 21:08:15 C 12 21 28.56 +18 04 27.0 c 113
2002-03-16 21:15:25 C 12 21 19.85 +18 03 49.7 c 157
2002-03-16 21:18:32 C 12 21 15.85 +18 03 27.9 c 157
2002-03-16 21:21:46 C 12 21 11.65 +18 03 04.5 c 157
2002-03-16 21:23:18 C 12 21 09.69 +18 02 53.9 c 157
2002-03-17 00:45:42 C 12 16 47.21 +17 38 09.9 c 084
2002-03-17 12:34:55 C 12 02 12.90 +16 14 02.8 m 428
2002-03-17 12:37:17 C 12 02 09.93 +16 13 45.3 m 428
2002-03-17 14:03:27 C 12 00 22.61 +16 03 06.8 m 428
2002-03-17 14:04:16 C 12 00 21.59 +16 03 00.5 m 428
2002-03-17 21:12:04 C 11 51 53.066 +15 07 16.94 a 112
2002-03-17 21:15:59 C 11 51 48.313 +15 06 47.52 a 112
2002-03-17 21:20:00 C 11 51 43.533 +15 06 17.23 a 112
2002-03-17 21:24:01 C 11 51 38.615 +15 05 47.80 a 112
2002-03-17 21:28:01 C 11 51 33.837 +15 05 18.14 a 112
2002-03-17 21:36:00 C 11 51 24.237 +15 04 17.99 a 112
2002-03-17 21:40:00 C 11 51 19.405 +15 03 48.31 a 112
2002-03-17 21:44:01 C 11 51 14.646 +15 03 17.98 a 112
2002-03-17 21:48:00 C 11 51 09.930 +15 02 48.38 a 112
2002-03-17 21:52:01 C 11 51 04.968 +15 02 18.13 a 112
2002-03-17 21:55:59 C 11 51 00.274 +15 01 48.82 a 112
2002-03-17 22:00:02 C 11 50 55.333 +15 01 18.68 a 112
2002-03-17 22:04:02 C 11 50 50.630 +15 00 48.36 a 112
2002-03-18 14:42:36 C 11 31 52.87 +12 56 15.3 379
2002-03-18 14:57:46 C 11 31 35.83 +12 54 21.1 379
2002-03-18 14:58:31 C 11 31 34.96 +12 54 16.1 379
2002-03-18 19:10:51 C 11 26 56.08 +12 22 44.9 300
2002-03-18 19:13:08 C 11 26 53.56 +12 22 27.6 300
2002-03-18 19:17:43 C 11 26 48.61 +12 21 53.5 300
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2002-03-12 08:20:00 476248 0.5 Hz 8560 -14 -14
2002-03-16 07:20:00 -9360.8 0.5 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)