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 01:51:50 C 04 57 57.15 -25 16 48.8 o 071
2022-10-05 01:52:40 C 04 57 57.53 -25 16 46.3 o 071
2022-10-05 01:53:30 C 04 57 57.85 -25 16 43.4 o 071
2022-10-05 01:54:20 C 04 57 58.21 -25 16 40.9 o 071
2022-10-05 01:55:10 C 04 57 58.55 -25 16 38.3 o 071
2022-10-05 01:56:00 C 04 57 58.91 -25 16 35.5 o 071
2022-10-05 01:56:48 C 04 57 59.31 -25 16 32.4 o 071
2022-10-05 01:57:38 C 04 57 59.60 -25 16 29.9 o 071
2022-10-05 01:58:28 C 04 57 59.94 -25 16 27.3 o 071
2022-10-05 01:59:18 C 04 58 00.25 -25 16 24.8 o 071
2022-10-05 02:00:08 C 04 58 00.65 -25 16 22.0 o 071
2022-10-05 02:00:57 C 04 58 00.98 -25 16 19.1 o 071
2022-10-05 02:01:46 C 04 58 01.35 -25 16 16.2 o 071
2022-10-05 02:02:36 C 04 58 01.69 -25 16 13.3 o 071
2022-10-05 02:03:27 C 04 58 02.00 -25 16 09.8 o 071
2022-10-05 02:04:17 C 04 58 02.39 -25 16 08.2 o 071
2022-10-05 02:05:06 C 04 58 02.74 -25 16 05.7 o 071
2022-10-05 02:05:55 C 04 58 03.03 -25 16 02.9 o 071
2022-10-05 02:06:44 C 04 58 03.44 -25 15 59.8 o 071
2022-10-05 02:07:35 C 04 58 03.80 -25 15 57.1 o 071
2022-10-05 02:08:25 C 04 58 04.14 -25 15 54.6 o 071
2022-10-05 02:09:14 C 04 58 04.45 -25 15 51.6 o 071
2022-10-05 02:10:03 C 04 58 04.83 -25 15 49.6 o 071
2022-10-05 02:10:53 C 04 58 05.17 -25 15 46.3 o 071
2022-10-05 02:11:43 C 04 58 05.52 -25 15 43.9 o 071
2022-10-05 02:12:33 C 04 58 05.91 -25 15 40.8 o 071
2022-10-05 02:13:23 C 04 58 06.20 -25 15 38.3 o 071
2022-10-05 02:14:11 C 04 58 06.55 -25 15 35.4 o 071
2022-10-05 02:15:01 C 04 58 06.89 -25 15 32.6 o 071
2022-10-05 02:15:51 C 04 58 07.25 -25 15 29.4 o 071
2022-10-05 02:16:41 C 04 58 07.59 -25 15 27.5 o 071
2022-10-05 02:17:31 C 04 58 07.94 -25 15 24.9 o 071
2022-10-05 02:18:21 C 04 58 08.29 -25 15 21.8 o 071
2022-10-05 02:19:09 C 04 58 08.56 -25 15 19.3 o 071
2022-10-05 02:19:59 C 04 58 08.98 -25 15 16.4 o 071
2022-10-05 02:20:49 C 04 58 09.34 -25 15 13.7 o 071
2022-10-05 02:21:39 C 04 58 09.67 -25 15 11.2 o 071
2022-10-05 02:22:29 C 04 58 10.01 -25 15 08.4 o 071
2022-10-05 02:23:19 C 04 58 10.39 -25 15 05.4 o 071
2022-10-05 02:24:07 C 04 58 10.69 -25 15 03.0 o 071
2022-10-05 02:24:57 C 04 58 11.09 -25 14 59.6 o 071
2022-10-05 02:25:48 C 04 58 11.42 -25 14 57.2 o 071
2022-10-05 02:26:37 C 04 58 11.77 -25 14 54.7 o 071
2022-10-05 02:27:27 C 04 58 12.10 -25 14 52.2 o 071
2022-10-05 02:28:16 C 04 58 12.46 -25 14 48.7 o 071
2022-10-05 02:29:05 C 04 58 12.83 -25 14 45.3 o 071
2022-10-05 02:29:55 C 04 58 12.83 -25 14 49.4 o 071
2022-10-05 02:30:04 C 04 58 14.717 -25 14 47.83 V K74
2022-10-05 02:30:46 C 04 58 13.51 -25 14 41.0 o 071
2022-10-05 02:31:35 C 04 58 13.86 -25 14 38.9 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)