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
2022-09-16 09:17:52 C 01 32 24.439 -35 13 16.64 V T05
2022-09-16 09:24:01 C 01 32 26.482 -35 13 19.60 V T08
2022-09-16 09:26:25 C 01 32 27.283 -35 13 21.58 V T05
2022-09-16 09:44:32 C 01 32 33.300 -35 13 32.30 V T05
2022-09-17 02:56:03 C 01 38 37.793 -35 19 22.98 V M22
2022-09-17 03:03:59 C 01 38 40.531 -35 19 24.96 V M22
2022-09-17 03:09:59 C 01 38 42.598 -35 19 26.44 V M22
2022-09-17 03:24:48 C 01 38 47.734 -35 19 29.86 V M22
2022-09-17 03:37:55 C 01 38 52.296 -35 19 32.84 V M22
2022-09-17 17:21:45 C 01 44 01.85 -35 24 16.4 V Q62
2022-09-17 17:23:08 C 01 44 02.33 -35 24 16.9 V Q62
2022-09-17 17:24:31 C 01 44 02.81 -35 24 17.1 V Q62
2022-09-17 17:25:55 C 01 44 03.30 -35 24 17.5 V Q62
2022-09-17 17:27:18 C 01 44 03.78 -35 24 17.8 V Q62
2022-09-17 17:28:40 C 01 44 04.27 -35 24 18.0 V Q62
2022-09-17 17:30:02 C 01 44 04.75 -35 24 18.3 V Q62
2022-09-17 17:31:24 C 01 44 05.23 -35 24 18.6 V Q62
2022-09-17 17:32:45 C 01 44 05.70 -35 24 18.9 V Q62
2022-09-17 17:34:08 C 01 44 06.18 -35 24 19.3 V Q62
2022-09-17 17:35:28 C 01 44 06.66 -35 24 19.5 V Q62
2022-09-17 17:36:50 C 01 44 07.14 -35 24 19.8 V Q62
2022-09-17 17:38:12 C 01 44 07.61 -35 24 20.1 V Q62
2022-09-17 17:39:35 C 01 44 08.11 -35 24 20.4 V Q62
2022-09-17 17:40:57 C 01 44 08.59 -35 24 20.7 V Q62
2022-09-17 17:42:17 C 01 44 09.04 -35 24 20.8 V Q62
2022-09-17 17:43:39 C 01 44 09.52 -35 24 21.2 V Q62
2022-09-17 17:45:03 C 01 44 10.01 -35 24 21.4 V Q62
2022-09-17 17:46:21 C 01 44 10.48 -35 24 21.7 V Q62
2022-09-17 17:47:43 C 01 44 10.95 -35 24 22.0 V Q62
2022-09-17 17:49:02 C 01 44 11.42 -35 24 22.3 V Q62
2022-09-17 17:50:22 C 01 44 11.90 -35 24 22.6 V Q62
2022-09-17 17:51:45 C 01 44 12.38 -35 24 22.8 V Q62
2022-09-17 17:53:08 C 01 44 12.86 -35 24 23.1 V Q62
2022-09-17 17:54:31 C 01 44 13.35 -35 24 23.4 V Q62
2022-09-20 05:05:34 C 02 07 57.000 -35 31 16.82 V W68
2022-09-20 05:31:29 C 02 08 07.142 -35 31 17.15 V W68
2022-09-20 05:35:23 C 02 08 08.662 -35 31 17.15 V W68
2022-09-20 05:41:52 C 02 08 11.215 -35 31 17.11 V W68
2022-09-20 05:42:31 C 02 08 11.455 -35 31 17.15 V W68
2022-09-20 05:45:45 C 02 08 12.737 -35 31 17.15 V W68
2022-09-20 05:52:15 C 02 08 15.266 -35 31 17.00 V W68
2022-09-20 05:59:29 C 02 08 18.089 -35 31 16.79 V W68
2022-09-20 22:09:25 C 02 15 13.975 -35 28 46.34 V M22
2022-09-20 22:13:34 C 02 15 15.662 -35 28 46.20 V M22
2022-09-20 22:20:55 C 02 15 18.660 -35 28 45.66 V M22
2022-09-20 22:39:15 C 02 15 26.119 -35 28 44.33 V M22
2022-09-22 09:58:47 C 02 31 05.866 -35 17 49.06 V T05
2022-09-22 10:19:37 C 02 31 14.767 -35 17 42.32 V T05
2022-09-22 10:40:35 C 02 31 23.683 -35 17 35.09 V T05
2022-09-22 11:01:17 C 02 31 32.450 -35 17 27.35 V T05
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)