65803 Didymos (1996 GT)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3832284188 ± 6.51e-10
Semi-major axis (a)1.6425644037 AU ± 4.60e-11
Inclination (i)3.41407431° ± 1.19e-07
Long. of Asc. Node (Ω)72.98445790° ± 2.27e-06
Arg. of Perihelion (ω)319.58991656° ± 2.29e-06
Mean Anomaly (M)167.22107700° ± 1.96e-07
Mean Motion (n)0.4681970422°/day ± 1.97e-11
Perihelion dist (q)1.01308704 AU ± 1.07e-09
Aphelion dist (Q)2.27204176 AU ± 1.07e-09
Orbital Period2.10515273 yr ± 8.85e-11
Physical Parameters
H (abs. magnitude)18.11
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.192″
Uncertainty0
Orbit TypeApollo
MOID0.038973 AU
Observations Used5293
Radar Obs Used9
Oppositions14
Arc Total1996-2025
First Observation Used1996-04-11
Last Observation Used2025-02-27
Observations (6092)
Date Type RA Dec Mag Band Observatory
2019-04-06 00:56:52 C 11 11 32.096 +11 38 00.11 X 309
2019-04-06 00:58:15 C 11 11 32.041 +11 38 00.26 X 309
2019-04-06 00:59:31 C 11 11 31.991 +11 38 00.43 X 309
2019-04-06 01:00:47 C 11 11 31.940 +11 38 00.58 X 309
2019-04-06 01:05:53 C 11 11 31.733 +11 38 01.16 X 309
2019-04-06 01:07:15 C 11 11 31.678 +11 38 01.33 X 309
2019-04-06 01:08:32 C 11 11 31.627 +11 38 01.47 X 309
2019-04-06 01:09:49 C 11 11 31.576 +11 38 01.61 X 309
2019-04-06 01:11:06 C 11 11 31.524 +11 38 01.75 X 309
2019-04-06 01:12:22 C 11 11 31.473 +11 38 01.90 X 309
2019-04-06 01:13:38 C 11 11 31.425 +11 38 02.08 X 309
2019-04-06 01:14:55 C 11 11 31.369 +11 38 02.21 X 309
2019-04-06 01:16:18 C 11 11 31.314 +11 38 02.36 X 309
2019-04-06 01:17:35 C 11 11 31.262 +11 38 02.51 X 309
2019-04-06 01:18:52 C 11 11 31.211 +11 38 02.65 X 309
2019-04-06 01:20:08 C 11 11 31.162 +11 38 02.80 X 309
2019-04-06 01:21:25 C 11 11 31.107 +11 38 02.95 X 309
2019-04-06 01:22:42 C 11 11 31.053 +11 38 03.10 X 309
2019-04-06 01:23:58 C 11 11 31.005 +11 38 03.24 X 309
2019-04-06 01:25:21 C 11 11 30.949 +11 38 03.41 X 309
2019-04-06 01:27:02 C 11 11 30.882 +11 38 03.60 X 309
2019-04-06 01:28:27 C 11 11 30.825 +11 38 03.77 X 309
2019-04-06 01:34:18 C 11 11 30.589 +11 38 04.44 X 309
2019-04-06 01:39:18 C 11 11 30.389 +11 38 05.01 X 309
2019-04-06 01:40:35 C 11 11 30.336 +11 38 05.15 X 309
2019-04-06 01:41:52 C 11 11 30.284 +11 38 05.31 X 309
2019-04-06 01:43:16 C 11 11 30.228 +11 38 05.46 X 309
2019-04-06 01:44:32 C 11 11 30.176 +11 38 05.61 X 309
2019-04-06 01:45:49 C 11 11 30.125 +11 38 05.75 X 309
2019-04-06 01:47:06 C 11 11 30.073 +11 38 05.89 X 309
2019-04-06 01:48:23 C 11 11 30.021 +11 38 06.05 X 309
2019-04-06 01:49:40 C 11 11 29.970 +11 38 06.19 X 309
2019-04-06 01:50:57 C 11 11 29.918 +11 38 06.34 X 309
2019-04-06 01:52:20 C 11 11 29.862 +11 38 06.49 X 309
2019-04-06 01:53:37 C 11 11 29.811 +11 38 06.64 X 309
2019-04-06 01:54:54 C 11 11 29.758 +11 38 06.79 X 309
2019-04-06 01:56:11 C 11 11 29.707 +11 38 06.94 X 309
2019-04-06 01:57:28 C 11 11 29.655 +11 38 07.08 X 309
2019-04-06 01:58:45 C 11 11 29.605 +11 38 07.22 X 309
2019-04-06 02:00:02 C 11 11 29.552 +11 38 07.38 X 309
2019-04-06 02:01:25 C 11 11 29.495 +11 38 07.52 X 309
2019-04-06 02:02:42 C 11 11 29.446 +11 38 07.66 X 309
2019-04-06 02:03:58 C 11 11 29.393 +11 38 07.81 X 309
2019-04-06 02:05:15 C 11 11 29.340 +11 38 07.98 X 309
2019-04-06 02:06:32 C 11 11 29.289 +11 38 08.09 X 309
2019-04-06 02:07:49 C 11 11 29.237 +11 38 08.24 X 309
2019-04-06 02:09:06 C 11 11 29.184 +11 38 08.40 X 309
2019-04-06 02:10:30 C 11 11 29.129 +11 38 08.56 X 309
2019-04-06 02:11:47 C 11 11 29.078 +11 38 08.72 X 309
2019-04-06 02:13:04 C 11 11 29.026 +11 38 08.85 X 309
Radar Observations (9)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-11-14 09:00:00 48158516.71 0.2 us 8560 -14 -14
2003-11-15 05:30:00 48558999.72 0.2 us 8560 -14 -14
2003-11-23 03:26:00 60567637.54 0.1 us 2380 -1 -1
2003-11-24 03:17:00 62957533.66 0.1 us 2380 -1 -1
2003-11-26 04:19:00 68342975.29 0.1 us 2380 -1 -1
2022-09-28 11:00:00 73916934.998 1.5 us 8560 -14 -14
2022-09-30 11:20:00 72316200.402 1.5 us 8560 -14 -14
2022-10-07 11:20:00 71795431.959 1 us 8560 -14 -14
2022-10-08 12:50:00 72372078.703 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)