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
2022-10-05 02:32:24 C 04 58 14.19 -25 14 35.3 o 071
2022-10-05 02:32:28 C 04 58 15.744 -25 14 40.06 V K74
2022-10-05 02:33:14 C 04 58 14.53 -25 14 32.3 o 071
2022-10-05 02:34:50 C 04 58 16.730 -25 14 32.28 V K74
2022-10-05 02:36:56 C 04 58 17.623 -25 14 25.22 V K74
2022-10-05 02:38:44 C 04 58 18.367 -25 14 19.64 V K74
2022-10-05 02:39:46 C 04 58 17.26 -25 14 11.1 o 071
2022-10-05 02:40:31 C 04 58 19.142 -25 14 13.56 V K74
2022-10-05 02:40:36 C 04 58 17.62 -25 14 08.4 o 071
2022-10-05 02:41:24 C 04 58 17.96 -25 14 05.6 o 071
2022-10-05 02:42:14 C 04 58 18.32 -25 14 02.8 o 071
2022-10-05 02:42:18 C 04 58 19.901 -25 14 07.73 V K74
2022-10-05 02:43:04 C 04 58 18.65 -25 14 00.1 o 071
2022-10-05 02:43:54 C 04 58 19.01 -25 13 57.6 o 071
2022-10-05 02:44:06 C 04 58 20.650 -25 14 02.00 V K74
2022-10-05 02:45:53 C 04 58 21.406 -25 13 55.96 V K74
2022-10-05 02:47:41 C 04 58 22.195 -25 13 49.94 V K74
2022-10-05 02:48:02 C 04 58 20.75 -25 13 43.5 o 071
2022-10-05 02:48:52 C 04 58 21.10 -25 13 41.0 o 071
2022-10-05 02:49:42 C 04 58 21.44 -25 13 37.9 o 071
2022-10-05 02:50:32 C 04 58 21.79 -25 13 35.4 o 071
2022-10-05 02:51:20 C 04 58 22.16 -25 13 32.6 o 071
2022-10-05 02:52:10 C 04 58 22.48 -25 13 29.9 o 071
2022-10-05 02:53:00 C 04 58 22.83 -25 13 27.1 o 071
2022-10-05 02:53:50 C 04 58 23.18 -25 13 24.4 o 071
2022-10-05 02:54:40 C 04 58 23.52 -25 13 21.5 o 071
2022-10-05 02:55:30 C 04 58 23.82 -25 13 18.7 o 071
2022-10-05 02:56:18 C 04 58 24.22 -25 13 16.2 o 071
2022-10-05 02:57:08 C 04 58 24.59 -25 13 13.3 o 071
2022-10-05 02:57:59 C 04 58 24.93 -25 13 10.2 o 071
2022-10-05 02:58:48 C 04 58 25.27 -25 13 07.8 o 071
2022-10-05 02:59:38 C 04 58 25.61 -25 13 04.9 o 071
2022-10-05 03:00:27 C 04 58 25.96 -25 13 02.2 o 071
2022-10-05 03:01:16 C 04 58 26.30 -25 12 59.7 o 071
2022-10-05 03:02:07 C 04 58 26.63 -25 12 56.9 o 071
2022-10-05 03:02:57 C 04 58 26.99 -25 12 54.2 o 071
2022-10-05 03:03:46 C 04 58 27.36 -25 12 51.3 o 071
2022-10-05 03:04:35 C 04 58 27.71 -25 12 48.4 o 071
2022-10-05 03:05:25 C 04 58 28.02 -25 12 45.7 o 071
2022-10-05 03:06:14 C 04 58 28.34 -25 12 42.6 o 071
2022-10-05 03:07:05 C 04 58 28.74 -25 12 40.2 o 071
2022-10-05 03:07:55 C 04 58 29.08 -25 12 37.3 o 071
2022-10-05 03:08:43 C 04 58 29.45 -25 12 34.6 o 071
2022-10-05 03:09:33 C 04 58 29.78 -25 12 32.0 o 071
2022-10-05 03:10:23 C 04 58 30.12 -25 12 29.6 o 071
2022-10-05 03:11:13 C 04 58 30.48 -25 12 26.4 o 071
2022-10-05 03:12:03 C 04 58 30.35 -25 12 24.0 o 071
2022-10-05 03:12:53 C 04 58 31.17 -25 12 21.0 o 071
2022-10-05 03:13:41 C 04 58 31.37 -25 12 18.1 o 071
2022-10-05 03:14:31 C 04 58 31.87 -25 12 15.2 o 071
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)