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
2022-10-09 02:03:07 C 05 38 16.890 -19 42 16.30 X B72
2022-10-09 02:09:56 C 05 38 18.04 -19 41 46.9 o 071
2022-10-09 02:11:02 C 05 38 18.41 -19 41 43.1 o 071
2022-10-09 02:11:12 C 05 38 17.648 -19 41 47.72 V 089
2022-10-09 02:14:04 C 05 38 18.648 -19 41 37.65 V 089
2022-10-09 02:16:56 C 05 38 19.666 -19 41 27.30 V 089
2022-10-09 02:19:05 C 05 38 21.30 -19 41 14.5 o 071
2022-10-09 02:19:48 C 05 38 20.734 -19 41 16.67 V 089
2022-10-09 02:20:09 C 05 38 21.68 -19 41 09.9 o 071
2022-10-09 02:27:36 C 05 38 24.881 -19 38 31.85 V M22
2022-10-09 02:28:11 C 05 38 24.57 -19 40 42.0 o 071
2022-10-09 02:29:16 C 05 38 24.96 -19 40 38.4 o 071
2022-10-09 02:32:04 C 05 38 26.467 -19 38 15.90 V M22
2022-10-09 02:40:50 C 05 38 29.11 -19 39 56.7 o 071
2022-10-09 02:42:40 C 05 38 29.84 -19 39 49.5 o 071
2022-10-09 02:48:52 C 05 38 31.90 -19 39 28.0 o 071
2022-10-09 02:53:38 C 05 38 34.138 -19 36 59.18 V M22
2022-10-09 02:59:04 C 05 38 35.64 -19 38 51.5 o 071
2022-10-09 03:00:51 C 05 38 36.694 -19 36 33.23 V M22
2022-10-09 03:13:32 C 05 38 42.72 -19 38 07.0 V C23
2022-10-09 03:21:04 C 05 38 45.49 -19 37 40.0 V C23
2022-10-09 03:27:32 C 05 38 47.85 -19 37 16.6 V C23
2022-10-09 03:38:19 C 05 38 51.78 -19 36 38.4 V C23
2022-10-09 03:45:52 C 05 38 54.47 -19 36 11.8 V C23
2022-10-09 04:28:57 C 05 39 10.020 -19 33 37.42 Z M09
2022-10-09 04:33:47 C 05 39 11.776 -19 33 20.15 Z M09
2022-10-09 04:38:36 C 05 39 13.529 -19 33 02.78 Z M09
2022-10-09 06:27:16 C 05 40 00.842 -19 24 09.11 V W68
2022-10-09 06:49:17 C 05 40 08.750 -19 22 52.39 V W68
2022-10-09 06:53:53 C 05 40 10.387 -19 22 36.34 V W68
2022-10-09 07:10:56 C 05 40 16.50 -19 21 36.3 q X03
2022-10-09 07:17:58 C 05 40 18.960 -19 21 11.99 V W68
2022-10-09 07:23:02 C 05 40 20.78 -19 20 53.8 q X03
2022-10-09 07:35:08 C 05 40 25.06 -19 20 11.3 q X03
2022-10-09 07:47:13 C 05 40 29.33 -19 19 28.8 q X03
2022-10-09 07:59:20 C 05 40 33.60 -19 18 46.0 q X03
2022-10-09 08:12:31 C 05 40 38.23 -19 17 59.4 q X03
2022-10-10 00:39:34 C 05 46 48.71 -18 20 48.9 Z M44
2022-10-10 00:41:04 C 05 46 49.21 -18 20 43.5 Z M44
2022-10-10 00:42:14 C 05 46 49.61 -18 20 39.3 Z M44
2022-10-10 00:43:24 C 05 46 50.02 -18 20 35.1 Z M44
2022-10-10 00:44:40 C 05 46 50.44 -18 20 30.6 Z M44
2022-10-10 00:45:53 C 05 46 50.85 -18 20 26.1 Z M44
2022-10-10 00:47:07 C 05 46 51.27 -18 20 21.9 Z M44
2022-10-10 00:48:23 C 05 46 51.70 -18 20 17.3 Z M44
2022-10-10 00:49:33 C 05 46 52.08 -18 20 13.2 Z M44
2022-10-10 00:50:42 C 05 46 52.47 -18 20 09.0 Z M44
2022-10-10 00:51:58 C 05 46 52.90 -18 20 04.6 Z M44
2022-10-10 00:53:08 C 05 46 53.29 -18 20 00.4 Z M44
2022-10-10 00:54:18 C 05 46 53.69 -18 19 56.3 Z M44
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)