390929 (2005 GP21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2245432452 ± 4.41e-07
Semi-major axis (a)1.3083120149 AU ± 3.73e-09
Inclination (i)18.80146381° ± 2.25e-05
Long. of Asc. Node (Ω)9.98183761° ± 2.82e-06
Arg. of Perihelion (ω)1.43369353° ± 1.49e-04
Mean Anomaly (M)99.12320924° ± 2.28e-04
Mean Motion (n)0.6586357219°/day ± 2.82e-09
Perihelion dist (q)1.01453939 AU ± 5.77e-07
Aphelion dist (Q)1.60208464 AU ± 5.77e-07
Orbital Period1.49646648 yr ± 6.41e-09
Physical Parameters
H (abs. magnitude)20.44
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.123″
Uncertainty0
Orbit TypeApollo
MOID0.012306 AU
Observations Used239
Oppositions6
Arc Total2005-2023
First Observation Used2005-04-04
Last Observation Used2023-04-25
Observations (283)
Date Type RA Dec Mag Band Observatory
2014-03-31 04:17:37 C 12 37 09.13 -04 08 57.2 L W84
2014-03-31 04:19:36 C 12 37 08.90 -04 08 57.8 L W84
2014-03-31 04:21:33 C 12 37 08.68 -04 08 58.4 L W84
2014-03-31 04:23:32 C 12 37 08.46 -04 08 59.0 L W84
2014-03-31 04:25:30 C 12 37 08.25 -04 08 59.5 L W84
2014-03-31 04:27:28 C 12 37 08.01 -04 09 00.1 L W84
2014-03-31 04:29:26 C 12 37 07.79 -04 09 00.7 L W84
2014-03-31 04:31:25 C 12 37 07.56 -04 09 01.3 L W84
2014-03-31 04:33:23 C 12 37 07.34 -04 09 01.9 L W84
2014-03-31 04:35:26 C 12 37 07.11 -04 09 02.5 L W84
2014-03-31 04:37:24 C 12 37 06.89 -04 09 03.1 L W84
2014-03-31 04:39:22 C 12 37 06.66 -04 09 03.7 L W84
2014-03-31 04:41:19 C 12 37 06.43 -04 09 04.2 L W84
2014-03-31 04:43:17 C 12 37 06.21 -04 09 04.8 L W84
2014-03-31 04:45:15 C 12 37 05.98 -04 09 05.4 L W84
2014-03-31 04:47:14 C 12 37 05.76 -04 09 06.0 L W84
2014-03-31 04:49:13 C 12 37 05.53 -04 09 06.6 L W84
2014-03-31 04:51:12 C 12 37 05.31 -04 09 07.1 L W84
2014-03-31 04:55:09 C 12 37 04.86 -04 09 08.3 L W84
2014-03-31 04:59:05 C 12 37 04.41 -04 09 09.4 L W84
2014-04-01 06:52:25 C 12 34 13.41 -04 16 59.6 q G96
2014-04-01 06:58:59 C 12 34 12.66 -04 17 01.8 q G96
2014-04-01 07:05:36 C 12 34 11.90 -04 17 03.4 q G96
2014-04-01 07:12:09 C 12 34 11.16 -04 17 05.1 q G96
2014-04-04 09:36:40 C 12 26 01.739 -04 38 37.33 L F51
2014-04-04 09:53:02 C 12 25 59.893 -04 38 42.18 L F51
2014-04-04 10:09:25 C 12 25 58.046 -04 38 46.87 L F51
2014-04-04 10:25:45 C 12 25 56.192 -04 38 51.52 L F51
2014-04-28 07:23:45 C 11 36 11.914 -07 18 20.39 L F51
2014-04-28 07:41:27 C 11 36 10.836 -07 18 25.48 L F51
2014-04-28 08:16:50 C 11 36 08.733 -07 18 35.41 L F51
2017-03-22 09:46:16 C 13 07 34.405 -05 01 47.47 L F51
2017-03-22 10:03:56 C 13 07 32.585 -05 01 53.59 L F51
2017-03-22 10:21:37 C 13 07 30.766 -05 01 59.21 L F51
2017-03-22 10:39:18 C 13 07 28.928 -05 02 05.08 L F51
2017-03-27 11:01:01 C 12 54 59.168 -05 40 41.67 L F51
2017-03-27 11:18:56 C 12 54 57.179 -05 40 47.28 L F51
2017-03-27 11:36:48 C 12 54 55.189 -05 40 52.88 L F51
2017-03-27 11:54:40 C 12 54 53.208 -05 40 58.48 L F51
2020-03-19 16:38:32 C 13 21 25.79 -06 31 21.9 q D29
2020-03-19 16:58:54 C 13 21 23.88 -06 31 30.0 q D29
2020-03-19 17:19:15 C 13 21 21.98 -06 31 36.9 q D29
2020-03-22 12:15:39 C 13 15 03.955 -06 55 38.03 U F52
2020-03-22 12:32:42 C 13 15 02.246 -06 55 43.93 U F52
2020-03-22 12:49:45 C 13 15 00.523 -06 55 50.14 U F52
2020-03-22 13:06:44 C 13 14 58.806 -06 55 56.13 U F52
2020-03-29 10:10:43 C 12 57 55.980 -07 52 18.95 U F52
2020-03-29 10:28:07 C 12 57 54.019 -07 52 24.47 U F52
2020-03-29 10:44:59 C 12 57 52.134 -07 52 29.94 U F52
2020-03-29 11:01:52 C 12 57 50.252 -07 52 35.37 U F52