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
2022-10-08 03:10:36 C 05 29 12.50 -21 03 55.8 q G23
2022-10-08 03:11:43 C 05 29 14.06 -21 03 50.3 V 204
2022-10-08 03:15:40 C 05 29 14.46 -21 03 37.7 q G23
2022-10-08 03:20:44 C 05 29 16.41 -21 03 19.9 q G23
2022-10-08 03:20:51 C 05 29 17.51 -21 03 17.9 V 204
2022-10-08 03:25:48 C 05 29 18.22 -21 03 01.7 q G23
2022-10-08 03:27:16 C 05 29 19.92 -21 02 55.2 V 204
2022-10-08 03:30:52 C 05 29 20.16 -21 02 43.5 q G23
2022-10-08 03:35:56 C 05 29 22.07 -21 02 25.6 q G23
2022-10-08 03:42:22 C 05 29 25.59 -21 02 01.6 V 204
2022-10-09 01:07:12 C 05 37 55.40 -19 45 29.4 o 071
2022-10-09 01:15:15 C 05 37 58.32 -19 45 01.5 o 071
2022-10-09 01:16:19 C 05 37 58.67 -19 44 56.8 o 071
2022-10-09 01:24:22 C 05 38 01.60 -19 44 28.4 o 071
2022-10-09 01:25:26 C 05 38 01.55 -19 44 24.3 o 071
2022-10-09 01:27:48 C 05 38 03.932 -19 44 20.51 X B72
2022-10-09 01:28:55 C 05 38 04.347 -19 44 16.52 X B72
2022-10-09 01:29:29 C 05 38 04.565 -19 44 14.29 X B72
2022-10-09 01:30:36 C 05 38 04.953 -19 44 10.56 X B72
2022-10-09 01:32:50 C 05 38 05.779 -19 44 02.30 X B72
2022-10-09 01:33:29 C 05 38 04.90 -19 43 56.3 o 071
2022-10-09 01:34:31 C 05 38 06.424 -19 43 56.67 X B72
2022-10-09 01:34:33 C 05 38 05.26 -19 43 52.5 o 071
2022-10-09 01:35:05 C 05 38 06.619 -19 43 54.66 X B72
2022-10-09 01:35:39 C 05 38 06.829 -19 43 52.57 X B72
2022-10-09 01:36:46 C 05 38 07.193 -19 43 48.51 X B72
2022-10-09 01:37:19 C 05 38 07.423 -19 43 47.00 X B72
2022-10-09 01:37:53 C 05 38 07.647 -19 43 44.95 X B72
2022-10-09 01:38:27 C 05 38 07.857 -19 43 42.95 X B72
2022-10-09 01:41:48 C 05 38 09.062 -19 43 31.13 X B72
2022-10-09 01:42:35 C 05 38 08.21 -19 43 24.2 o 071
2022-10-09 01:43:29 C 05 38 09.702 -19 43 25.10 X B72
2022-10-09 01:43:40 C 05 38 08.56 -19 43 20.1 o 071
2022-10-09 01:44:03 C 05 38 09.910 -19 43 23.04 X B72
2022-10-09 01:45:44 C 05 38 10.512 -19 43 17.12 X B72
2022-10-09 01:46:17 C 05 38 10.716 -19 43 15.57 X B72
2022-10-09 01:47:25 C 05 38 11.127 -19 43 11.10 X B72
2022-10-09 01:47:58 C 05 38 11.363 -19 43 09.40 X B72
2022-10-09 01:48:32 C 05 38 11.555 -19 43 07.56 X B72
2022-10-09 01:49:06 C 05 38 11.749 -19 43 05.61 X B72
2022-10-09 01:49:39 C 05 38 11.963 -19 43 03.54 X B72
2022-10-09 01:50:13 C 05 38 12.153 -19 43 01.15 X B72
2022-10-09 01:51:42 C 05 38 11.47 -19 42 51.7 o 071
2022-10-09 01:52:47 C 05 38 11.85 -19 42 47.9 o 071
2022-10-09 01:54:00 C 05 38 11.372 -19 42 48.83 V 089
2022-10-09 01:55:16 C 05 38 14.025 -19 42 43.81 X B72
2022-10-09 01:59:12 C 05 38 15.451 -19 42 29.59 X B72
2022-10-09 02:00:49 C 05 38 14.75 -19 42 19.1 o 071
2022-10-09 02:00:52 C 05 38 16.074 -19 42 24.24 X B72
2022-10-09 02:01:54 C 05 38 15.11 -19 42 15.3 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)