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
2022-09-22 11:21:50 C 02 31 41.114 -35 17 19.32 V T05
2022-09-22 11:42:42 C 02 31 49.908 -35 17 10.57 V T05
2022-09-22 12:10:05 C 02 32 01.416 -35 16 58.44 V T05
2022-09-23 02:37:27 C 02 38 46.32 -35 07 30.3 H78
2022-09-23 02:41:05 C 02 38 47.95 -35 07 29.3 H78
2022-09-23 02:42:54 C 02 38 48.77 -35 07 28.5 H78
2022-09-23 03:55:05 C 02 39 19.534 -35 06 13.10 V W68
2022-09-23 04:40:52 C 02 39 39.679 -35 05 50.57 V W68
2022-09-23 05:27:07 C 02 39 59.858 -35 05 25.94 V W68
2022-09-23 05:35:24 C 02 40 03.456 -35 05 21.34 V W68
2022-09-23 05:39:32 C 02 40 05.244 -35 05 19.00 V W68
2022-09-23 05:46:07 C 02 40 08.107 -35 05 15.14 V W68
2022-09-23 05:53:23 C 02 40 11.263 -35 05 11.00 V W68
2022-09-23 06:13:03 C 02 40 19.774 -35 04 59.23 V W68
2022-09-23 10:56:22 C 02 42 33.866 -35 02 56.51 V T08
2022-09-23 11:23:28 C 02 42 45.658 -35 02 40.13 V T08
2022-09-23 11:39:16 C 02 42 52.502 -35 02 30.34 V T08
2022-09-23 12:09:06 C 02 43 05.412 -35 02 11.08 V T08
2022-09-23 12:43:02 C 02 43 20.074 -35 01 47.35 V T08
2022-09-23 13:21:27 C 02 43 36.646 -35 01 19.06 V T08
2022-09-23 14:08:06 C 02 43 56.844 -35 00 42.08 V T08
2022-09-23 15:00:34 C 02 44 19.702 -34 59 57.41 V T08
2022-09-23 15:21:14 C 02 44 28.764 -34 59 39.01 V T08
2022-09-25 13:46:55 C 03 06 55.34 -34 12 32.4 V Q62
2022-09-25 13:56:20 C 03 06 59.67 -34 12 22.7 V Q62
2022-09-25 14:02:36 C 03 07 02.59 -34 12 16.0 V Q62
2022-09-25 14:14:57 C 03 07 08.22 -34 12 03.1 V Q62
2022-09-26 02:18:44 C 03 12 58.43 -33 58 33.4 V 204
2022-09-26 02:26:02 C 03 13 01.83 -33 58 23.2 V 204
2022-09-26 02:29:49 C 03 13 03.56 -33 58 18.6 V 204
2022-09-26 10:03:29 C 03 16 54.254 -33 47 07.26 V T08
2022-09-26 10:28:17 C 03 17 05.887 -33 46 37.52 V T05
2022-09-26 10:37:34 C 03 17 10.186 -33 46 24.82 V T08
2022-09-26 10:59:18 C 03 17 20.328 -33 45 58.14 V T05
2022-09-26 11:10:33 C 03 17 25.495 -33 45 42.59 V T08
2022-09-26 11:28:44 C 03 17 33.950 -33 45 19.87 V T05
2022-09-26 11:46:39 C 03 17 42.151 -33 44 55.00 V T08
2022-09-26 12:01:18 C 03 17 48.955 -33 44 36.35 V T05
2022-09-26 12:26:55 C 03 18 00.631 -33 43 59.92 V T08
2022-09-26 12:37:24 C 03 18 05.520 -33 43 46.52 V T05
2022-09-26 13:12:05 C 03 18 21.293 -33 42 55.76 V T08
2022-09-26 13:18:49 C 03 18 24.475 -33 42 47.34 V T05
2022-09-26 13:58:27 C 03 18 42.502 -33 41 47.11 V T08
2022-09-26 14:04:49 C 03 18 45.547 -33 41 39.01 V T05
2022-09-26 14:53:35 C 03 19 07.812 -33 40 21.86 V T08
2022-09-26 14:54:12 C 03 19 08.227 -33 40 22.62 V T05
2022-09-26 15:16:15 C 03 19 18.266 -33 39 45.76 V T08
2022-09-26 15:25:51 C 03 19 22.834 -33 39 32.08 V T05
2022-09-26 23:11:21 C 03 23 18.42 -33 27 54.6 q M47
2022-09-26 23:12:35 C 03 23 19.03 -33 27 55.6 q M47
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)