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
2002-03-19 13:34:34 C 11 08 09.49 +10 08 49.3 379
2002-03-19 13:47:08 C 11 07 56.87 +10 07 20.1 379
2002-03-19 13:48:19 C 11 07 55.63 +10 07 11.0 379
2002-03-19 13:52:39 C 11 07 51.33 +10 06 40.5 379
2002-03-19 23:08:11 C 10 58 59.42 +09 01 02.0 c 084
2002-03-22 21:02:09 C 10 05 43.70 +02 05 31.3 c 157
2002-03-22 21:03:50 C 10 05 42.63 +02 05 22.5 c 157
2002-03-22 21:05:31 C 10 05 41.57 +02 05 14.4 c 157
2002-03-22 21:07:13 C 10 05 40.50 +02 05 05.8 c 157
2002-03-22 21:08:54 C 10 05 39.44 +02 04 58.0 c 157
2002-03-24 19:29:02 C 09 40 59.40 -01 16 30.3 c 084
2002-03-25 03:39:17 C 09 37 20.79 -01 46 21.3 c 670
2002-03-25 04:27:02 C 09 36 59.06 -01 49 13.7 c 670
2002-03-25 05:36:21 C 09 36 27.64 -01 53 22.3 c 670
2002-03-25 21:28:24 C 09 29 53.19 -02 47 40.7 c 560
2002-03-25 21:31:06 C 09 29 51.93 -02 47 49.6 c 560
2002-03-25 21:37:40 C 09 29 49.31 -02 48 11.5 c 560
2002-03-25 21:40:58 C 09 29 47.99 -02 48 22.4 c 560
2002-03-25 21:59:59 C 09 29 40.20 -02 49 23.6 c 560
2002-03-25 22:04:59 C 09 29 38.13 -02 49 39.2 c 560
2002-03-25 22:09:59 C 09 29 36.15 -02 49 56.3 c 560
2002-03-25 22:14:59 C 09 29 34.13 -02 50 12.2 c 560
2002-03-27 05:31:39 C 09 18 20.69 -04 23 02.6 c 670
2002-03-27 06:58:16 C 09 17 51.13 -04 26 57.2 c 670
2002-03-28 21:00:00 C 09 06 42.68 -05 58 39.4 c 641
2002-03-28 21:29:59 C 09 06 34.26 -05 59 44.7 c 641
2002-03-29 20:08:05 C 09 01 00.05 -06 47 54.2 c 636
2002-03-29 20:14:34 C 09 00 58.50 -06 48 06.0 c 636
2002-03-29 20:20:43 C 09 00 57.04 -06 48 17.9 c 636
2002-03-29 20:42:14 C 09 00 51.64 -06 49 00.9 151
2002-03-29 20:46:16 C 09 00 50.70 -06 49 07.8 151
2002-03-29 20:49:53 C 09 00 49.64 -06 49 12.7 151
2002-03-29 20:52:48 C 09 00 49.20 -06 49 20.8 151
2002-03-29 20:57:39 C 09 00 48.02 -06 49 28.9 151
2002-03-29 21:00:08 C 09 00 47.36 -06 49 35.0 151
2002-04-09 03:05:13 C 08 27 58.96 -11 42 26.7 18.5 c 704
2002-04-09 03:22:19 C 08 27 57.64 -11 42 38.6 19.2 c 704
2002-04-09 03:39:13 C 08 27 56.20 -11 42 50.9 19.7 c 704
2002-04-09 03:56:58 C 08 27 54.96 -11 43 03.9 19.3 c 704
2002-04-09 04:14:00 C 08 27 53.67 -11 43 16.4 18.9 c 704
2002-04-10 02:56:52 C 08 26 25.06 -11 59 11.2 18.3 c 704
2002-04-10 03:13:38 C 08 26 23.89 -11 59 22.6 18.6 c 704
2002-04-10 03:30:29 C 08 26 22.72 -11 59 33.6 18.8 c 704
2002-04-10 03:47:13 C 08 26 21.53 -11 59 45.2 18.7 c 704
2002-04-10 04:03:56 C 08 26 20.36 -11 59 55.1 18.6 c 704
2004-03-08 07:00:54 C 15 42 48.68 -09 29 06.1 r 649
2004-03-08 07:02:58 C 15 42 47.98 -09 29 13.2 r 649
2004-03-08 07:05:00 C 15 42 47.34 -09 29 21.2 r 649
2004-03-14 13:56:13 C 14 33 18.25 -21 25 22.0 r D85
2004-03-14 13:57:53 C 14 33 17.24 -21 25 31.4 r D85
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)