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
2004-03-14 13:58:42 C 14 33 16.78 -21 25 36.0 r D85
2004-04-12 09:38:19 C 08 32 31.78 -30 04 48.1 r 428
2004-04-12 09:59:42 C 08 32 28.82 -30 04 29.4 r 428
2006-03-08 10:55:50 C 15 51 15.80 -24 53 42.9 17.7 c 704
2006-03-08 11:12:27 C 15 51 13.00 -24 54 46.9 18.4 c 704
2006-03-08 11:29:03 C 15 51 10.22 -24 55 51.7 18.4 c 704
2006-03-08 11:45:39 C 15 51 07.45 -24 56 54.8 18.6 c 704
2006-03-08 12:02:16 C 15 51 04.74 -24 57 58.7 18.3 c 704
2006-03-12 08:31:30 C 15 33 35.00 -31 21 31.0 o 808
2006-03-12 08:42:00 C 15 33 32.34 -31 22 20.8 o 808
2006-03-12 08:53:30 C 15 33 29.79 -31 23 06.8 o 808
2008-01-30 12:20:21 C 16 09 57.71 -02 49 17.8 o 691
2008-01-30 12:57:58 C 16 09 57.71 -02 50 03.3 o 691
2010-02-25 02:51:41 S 16 15 03.439 -26 43 52.68 L C51
2010-02-25 04:26:51 S 16 15 06.742 -26 47 27.17 L C51
2010-02-25 04:27:02 S 16 15 06.840 -26 47 28.97 L C51
2010-02-25 10:48:04 S 16 15 19.742 -27 01 55.42 L C51
2010-02-25 12:23:25 S 16 15 22.874 -27 05 33.65 L C51
2010-02-25 23:30:30 S 16 15 45.552 -27 31 08.76 L C51
2010-03-07 12:12:44 S 16 23 07.027 -37 34 14.56 L C51
2010-04-18 04:50:26 S 05 19 32.19 -72 51 21.3 L C51
2010-04-18 08:01:08 S 05 19 21.00 -72 39 19.0 L C51
2010-04-18 14:22:11 S 05 19 00.12 -72 15 23.2 L C51
2010-04-18 17:32:41 S 05 18 50.13 -72 03 28.6 L C51
2010-04-18 17:32:53 S 05 18 49.975 -72 03 28.80 L C51
2010-04-18 20:43:23 S 05 18 40.36 -71 51 35.4 L C51
2010-04-18 23:53:55 S 05 18 31.13 -71 39 45.5 L C51
2012-03-09 09:19:55 C 16 48 55.46 -43 59 20.5 o 807
2012-03-09 09:26:48 C 16 48 56.12 -43 59 39.5 o 807
2012-03-10 09:38:52 C 16 51 23.44 -45 08 11.9 o 807
2012-03-10 09:46:03 C 16 51 24.05 -45 08 32.7 o 807
2014-03-18 09:34:55 C 17 55 54.75 -54 55 05.8 u 807
2014-03-18 09:42:32 C 17 55 56.59 -54 55 25.5 u 807
2014-03-18 09:50:49 C 17 55 58.54 -54 55 47.1 u 807
2014-03-21 09:33:07 C 18 15 32.16 -58 00 27.8 u 807
2014-03-21 09:37:39 C 18 15 33.45 -58 00 39.4 u 807
2014-03-21 09:42:12 C 18 15 34.80 -58 00 51.4 u 807
2014-03-21 09:46:45 C 18 15 36.14 -58 01 03.1 u 807
2014-03-21 09:51:18 C 18 15 37.47 -58 01 15.0 u 807
2015-05-18 06:14:10 C 07 48 40.825 +25 20 10.13 L F51
2015-05-18 06:34:09 C 07 48 44.147 +25 19 43.85 L F51
2023-05-02 04:29:46 C 07 49 53.868 +19 50 27.49 V G96
2023-05-02 04:35:59 C 07 49 54.646 +19 50 16.98 V G96
2023-05-02 04:42:13 C 07 49 55.517 +19 50 06.90 V G96
2023-05-02 04:48:27 C 07 49 56.302 +19 49 56.60 V G96
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)