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
2022-10-10 01:59:19 C 05 47 18.430 -18 16 31.44 V 089
2022-10-10 02:05:30 C 05 47 22.510 -18 16 08.18 V K74
2022-10-10 02:07:55 C 05 47 21.441 -18 16 00.21 V 089
2022-10-10 02:09:18 C 05 47 23.854 -18 15 55.08 V K74
2022-10-10 02:12:30 C 05 47 24.960 -18 15 43.67 V K74
2022-10-10 02:15:21 C 05 47 25.954 -18 15 33.37 V K74
2022-10-10 02:16:31 C 05 47 24.377 -18 15 29.81 V 089
2022-10-10 02:17:53 C 05 47 26.846 -18 15 24.55 V K74
2022-10-10 02:19:23 C 05 47 25.365 -18 15 20.09 V 089
2022-10-10 02:20:27 C 05 47 27.732 -18 15 15.52 V K74
2022-10-10 02:22:15 C 05 47 26.346 -18 15 09.34 V 089
2022-10-10 02:58:30 C 05 47 40.944 -18 13 00.55 X K87
2022-10-10 03:03:27 C 05 47 42.672 -18 12 42.98 X K87
2022-10-10 03:08:06 C 05 47 44.278 -18 12 26.39 X K87
2022-10-10 07:27:50 C 05 49 21.955 -17 54 32.51 V W88
2022-10-10 07:35:35 C 05 49 24.578 -17 54 05.22 V W88
2022-10-10 07:43:46 C 05 49 27.362 -17 53 36.35 V W88
2022-10-10 08:09:58 C 05 49 36.278 -17 52 09.48 V W68
2022-10-10 08:20:16 C 05 49 39.739 -17 51 32.98 V W68
2022-10-10 08:53:36 C 05 49 50.899 -17 49 34.57 V W68
2022-10-10 08:57:34 C 05 49 52.224 -17 49 20.39 V W68
2022-10-10 15:02:32 C 05 52 10.00 -17 27 20.8 V Q62
2022-10-10 15:05:16 C 05 52 10.87 -17 27 11.5 V Q62
2022-10-10 15:07:57 C 05 52 11.79 -17 27 02.1 V Q62
2022-10-11 08:10:13 C 05 58 11.436 -16 26 31.74 V W68
2022-10-11 08:15:27 C 05 58 13.111 -16 26 13.34 V W68
2022-10-11 08:24:56 C 05 58 16.150 -16 25 39.90 V W68
2022-10-11 08:35:58 C 05 58 19.673 -16 25 01.06 V W68
2022-10-11 18:08:46 C 06 01 37.14 -15 51 12.8 V Q62
2022-10-11 18:24:19 C 06 01 42.05 -15 50 18.3 V Q62
2022-10-11 18:38:19 C 06 01 46.37 -15 49 29.0 V Q62
2022-10-12 01:46:09 C 06 04 14.955 -15 26 29.61 X B72
2022-10-12 01:48:15 C 06 04 15.633 -15 26 22.07 X B72
2022-10-12 01:50:03 C 06 04 16.194 -15 26 15.95 X B72
2022-10-12 01:51:51 C 06 04 16.778 -15 26 09.90 X B72
2022-10-12 01:53:39 C 06 04 17.369 -15 26 03.44 X B72
2022-10-12 01:55:27 C 06 04 17.930 -15 25 57.43 X B72
2022-10-12 01:57:15 C 06 04 18.499 -15 25 51.01 X B72
2022-10-12 01:59:03 C 06 04 19.085 -15 25 44.61 X B72
2022-10-12 02:00:52 C 06 04 19.638 -15 25 38.48 X B72
2022-10-12 02:02:40 C 06 04 20.229 -15 25 32.25 X B72
2022-10-12 03:31:12 C 06 04 47.995 -15 20 22.96 K74
2022-10-12 03:36:06 C 06 04 49.531 -15 20 05.68 K74
2022-10-12 03:41:01 C 06 04 51.074 -15 19 48.47 K74
2022-10-12 03:45:54 C 06 04 52.610 -15 19 31.37 K74
2022-10-12 03:50:48 C 06 04 54.142 -15 19 14.27 K74
2022-10-12 03:55:24 C 06 04 55.582 -15 18 58.00 K74
2022-10-12 05:24:38 C 06 05 31.38 -15 11 15.4 q X03
2022-10-12 05:31:01 C 06 05 33.43 -15 10 53.5 q X03
2022-10-12 05:37:26 C 06 05 35.48 -15 10 31.5 q X03
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)