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
2022-07-02 08:57:31 C 22 05 02.888 -18 14 36.62 X 269
2022-07-02 08:59:32 C 22 05 03.005 -18 14 36.73 X 269
2022-07-02 09:01:34 C 22 05 03.127 -18 14 36.83 X 269
2022-07-02 09:03:35 C 22 05 03.245 -18 14 36.93 X 269
2022-07-02 09:05:37 C 22 05 03.366 -18 14 37.03 X 269
2022-07-02 09:07:38 C 22 05 03.481 -18 14 37.14 X 269
2022-07-02 09:09:38 C 22 05 03.603 -18 14 37.24 X 269
2022-07-02 09:11:41 C 22 05 03.722 -18 14 37.33 X 269
2022-07-02 09:13:42 C 22 05 03.840 -18 14 37.43 X 269
2022-07-02 09:15:43 C 22 05 03.959 -18 14 37.53 X 269
2022-07-02 09:17:45 C 22 05 04.078 -18 14 37.63 X 269
2022-07-02 09:19:47 C 22 05 04.198 -18 14 37.73 X 269
2022-07-02 09:21:48 C 22 05 04.317 -18 14 37.83 X 269
2022-07-02 09:23:49 C 22 05 04.437 -18 14 37.92 X 269
2022-07-02 09:27:52 C 22 05 04.673 -18 14 38.11 X 269
2022-07-02 09:29:53 C 22 05 04.794 -18 14 38.21 X 269
2022-07-02 09:31:55 C 22 05 04.913 -18 14 38.31 X 269
2022-07-02 09:33:56 C 22 05 05.033 -18 14 38.41 X 269
2022-07-02 09:35:58 C 22 05 05.151 -18 14 38.50 X 269
2022-07-02 09:37:58 C 22 05 05.269 -18 14 38.60 X 269
2022-07-02 09:39:59 C 22 05 05.390 -18 14 38.69 X 269
2022-07-02 09:42:00 C 22 05 05.508 -18 14 38.79 X 269
2022-07-02 09:44:01 C 22 05 05.627 -18 14 38.88 X 269
2022-07-02 09:46:02 C 22 05 05.747 -18 14 38.98 X 269
2022-07-02 09:48:03 C 22 05 05.866 -18 14 39.07 X 269
2022-07-02 09:50:04 C 22 05 05.982 -18 14 39.16 X 269
2022-07-02 09:52:05 C 22 05 06.102 -18 14 39.26 X 269
2022-07-02 09:54:06 C 22 05 06.225 -18 14 39.35 X 269
2022-07-02 09:56:07 C 22 05 06.342 -18 14 39.44 X 269
2022-07-02 09:58:08 C 22 05 06.461 -18 14 39.53 X 269
2022-07-02 10:00:09 C 22 05 06.578 -18 14 39.63 X 269
2022-07-02 10:02:10 C 22 05 06.697 -18 14 39.72 X 269
2022-07-02 10:04:11 C 22 05 06.818 -18 14 39.80 X 269
2022-07-02 10:06:12 C 22 05 06.939 -18 14 39.90 X 269
2022-07-02 10:08:13 C 22 05 07.058 -18 14 40.00 X 269
2022-07-02 10:10:14 C 22 05 07.173 -18 14 40.09 X 269
2022-07-02 10:12:15 C 22 05 07.297 -18 14 40.18 X 269
2022-07-02 10:14:16 C 22 05 07.415 -18 14 40.26 X 269
2022-07-02 10:16:17 C 22 05 07.537 -18 14 40.36 X 269
2022-07-02 10:18:18 C 22 05 07.656 -18 14 40.44 X 269
2022-07-02 10:22:20 C 22 05 07.896 -18 14 40.63 X 269
2022-07-02 10:24:21 C 22 05 08.016 -18 14 40.72 X 269
2022-07-02 10:26:22 C 22 05 08.136 -18 14 40.81 X 269
2022-07-02 10:28:23 C 22 05 08.252 -18 14 40.89 X 269
2022-07-02 10:30:24 C 22 05 08.373 -18 14 40.98 X 269
2022-07-02 10:32:25 C 22 05 08.495 -18 14 41.07 X 269
2022-07-02 10:34:26 C 22 05 08.613 -18 14 41.15 X 269
2022-07-02 10:36:27 C 22 05 08.734 -18 14 41.24 X 269
2022-07-05 04:24:13 C 22 09 17.502 -18 19 07.00 X I33
2022-07-05 04:25:55 C 22 09 17.600 -18 19 07.14 X I33
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)