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
2022-09-29 18:10:50 C 03 56 47.54 -31 19 17.0 V P87
2022-09-30 00:35:58 C 04 00 00.53 -31 04 34.5 V A92
2022-09-30 00:41:45 C 04 00 03.24 -31 04 21.4 V A92
2022-09-30 00:50:23 C 04 00 07.30 -31 04 03.2 V A92
2022-09-30 00:57:21 C 04 00 10.54 -31 03 45.9 V A92
2022-09-30 01:02:34 C 04 00 12.98 -31 03 34.1 V A92
2022-09-30 01:06:58 C 04 00 15.06 -31 03 24.4 V A92
2022-09-30 01:10:16 C 04 00 16.62 -31 03 17.0 V A92
2022-09-30 01:16:13 C 04 00 19.33 -31 03 02.2 V A92
2022-09-30 03:30:43 C 04 01 32.65 -30 55 08.2 q I47
2022-09-30 05:06:32 C 04 02 18.54 -30 51 38.3 q I47
2022-09-30 06:35:00 C 04 03 00.04 -30 48 17.8 q I47
2022-09-30 09:15:46 C 04 04 19.49 -30 43 48.8 X H06
2022-09-30 09:21:46 C 04 04 22.27 -30 43 34.7 X H06
2022-09-30 09:26:32 C 04 04 24.48 -30 43 23.5 X H06
2022-09-30 09:32:30 C 04 04 27.27 -30 43 09.3 X H06
2022-09-30 09:38:26 C 04 04 30.02 -30 42 55.2 X H06
2022-09-30 14:37:14 C 04 07 01.86 -30 28 39.5 V Q62
2022-09-30 14:38:30 C 04 07 02.45 -30 28 36.5 V Q62
2022-09-30 14:39:46 C 04 07 03.09 -30 28 33.8 V Q62
2022-09-30 14:41:02 C 04 07 03.67 -30 28 30.7 V Q62
2022-09-30 14:42:16 C 04 07 04.25 -30 28 27.8 V Q62
2022-09-30 14:43:31 C 04 07 04.84 -30 28 24.8 V Q62
2022-09-30 14:44:46 C 04 07 05.42 -30 28 22.0 V Q62
2022-09-30 14:46:02 C 04 07 06.01 -30 28 19.0 V Q62
2022-09-30 14:47:17 C 04 07 06.61 -30 28 16.0 V Q62
2022-09-30 14:48:33 C 04 07 07.19 -30 28 13.3 V Q62
2022-09-30 14:49:47 C 04 07 07.76 -30 28 10.4 V Q62
2022-09-30 14:51:01 C 04 07 08.36 -30 28 07.6 V Q62
2022-09-30 14:52:16 C 04 07 08.95 -30 28 04.4 V Q62
2022-09-30 16:37:50 C 04 07 58.992 -30 25 43.64 q Q21
2022-09-30 17:02:11 C 04 08 10.291 -30 24 44.75 q Q21
2022-09-30 17:09:46 C 04 08 13.800 -30 24 26.17 q Q21
2022-09-30 17:17:19 C 04 08 17.306 -30 24 07.92 q Q21
2022-09-30 17:24:52 C 04 08 20.779 -30 23 49.27 q Q21
2022-10-01 02:10:41 C 04 12 40.47 -30 01 35.7 q A77
2022-10-01 02:17:41 C 04 12 43.75 -30 01 18.3 q A77
2022-10-01 02:24:41 C 04 12 47.07 -30 00 59.9 q A77
2022-10-01 04:13:50 C 04 13 45.76 -29 53 45.1 q I47
2022-10-01 05:15:59 C 04 14 15.05 -29 51 13.4 q I47
2022-10-01 06:23:28 C 04 14 46.39 -29 48 25.0 q I47
2022-10-01 06:26:11 C 04 14 48.010 -29 48 27.79 V W68
2022-10-01 06:32:52 C 04 14 51.096 -29 48 11.09 V W68
2022-10-01 06:36:46 C 04 14 52.872 -29 48 01.12 V W68
2022-10-01 06:53:15 C 04 15 00.437 -29 47 19.21 V W68
2022-10-01 16:30:38 C 04 19 43.26 -29 23 29.5 q D95
2022-10-01 16:36:08 C 04 19 45.80 -29 23 15.2 q D95
2022-10-01 16:38:53 C 04 19 47.05 -29 23 07.9 q D95
2022-10-01 16:41:04 C 04 19 48.05 -29 23 01.9 q D95
2022-10-01 20:52:01 C 04 21 53.62 -29 11 06.3 q 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)