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
2022-11-04 08:28:22 C 07 55 04.310 +07 56 22.13 V W68
2022-11-04 08:35:06 C 07 55 04.882 +07 56 32.86 V W68
2022-11-04 08:37:03 C 07 55 05.050 +07 56 35.95 V W68
2022-11-04 15:14:51 C 07 55 46.49 +08 07 18.0 q E94
2022-11-04 15:18:19 C 07 55 46.81 +08 07 23.5 q E94
2022-11-04 15:21:48 C 07 55 47.14 +08 07 29.3 q E94
2022-11-04 16:44:15 S 07 55 56.760 +08 08 11.06 X 275
2022-11-04 18:37:28 C 07 56 06.87 +08 11 13.0 V P87
2022-11-04 18:46:26 C 07 56 07.64 +08 11 27.4 V P87
2022-11-04 18:58:43 C 07 56 08.68 +08 11 47.3 V P87
2022-11-05 03:26:55 C 07 56 59.26 +08 24 48.0 V C23
2022-11-05 03:41:28 C 07 57 00.52 +08 25 10.9 V C23
2022-11-05 03:58:06 C 07 57 01.95 +08 25 36.8 V C23
2022-11-05 08:33:31 C 07 57 29.81 +08 34 20.7 Z X06
2022-11-05 08:47:08 C 07 57 30.90 +08 34 42.0 Z X06
2022-11-05 11:20:51 C 07 57 45.972 +08 37 24.71 V 703
2022-11-05 11:28:00 C 07 57 46.577 +08 37 36.05 V 703
2022-11-05 11:35:08 C 07 57 47.113 +08 37 46.63 V 703
2022-11-05 12:06:41 C 07 57 49.597 +08 38 35.56 V 703
2022-11-05 19:49:17 C 07 58 35.38 +08 50 26.2 V D29
2022-11-05 20:12:12 C 07 58 37.15 +08 51 01.2 V D29
2022-11-05 20:35:06 C 07 58 38.95 +08 51 36.7 V D29
2022-11-05 22:17:31 C 07 58 51.22 +08 53 55.5 V C40
2022-11-05 22:29:21 C 07 58 52.25 +08 54 14.0 V C40
2022-11-05 22:41:00 C 07 58 53.27 +08 54 32.1 V C40
2022-11-06 02:57:52 C 07 59 15.96 +09 01 01.1 t B50
2022-11-06 03:13:35 C 07 59 17.22 +09 01 25.0 t B50
2022-11-06 03:18:27 C 07 59 17.65 +09 01 32.3 t B50
2022-11-06 04:10:36 C 07 59 21.75 +09 02 51.3 t B50
2022-11-06 04:17:13 C 07 59 24.084 +09 03 25.74 V J47
2022-11-06 04:27:40 C 07 59 23.038 +09 03 16.52 X K74
2022-11-06 04:30:52 C 07 59 23.294 +09 03 21.49 X K74
2022-11-06 04:33:54 C 07 59 23.525 +09 03 26.32 X K74
2022-11-06 04:36:55 C 07 59 23.784 +09 03 30.74 X K74
2022-11-06 04:39:57 C 07 59 24.026 +09 03 35.68 X K74
2022-11-06 04:42:28 C 07 59 24.221 +09 03 39.60 X K74
2022-11-06 04:51:55 C 07 59 26.729 +09 04 18.62 V J47
2022-11-06 05:26:12 C 07 59 29.316 +09 05 10.68 V J47
2022-11-06 10:58:11 C 07 59 59.96 +09 13 16.3 q H36
2022-11-06 11:24:58 C 08 00 02.00 +09 13 56.4 q H36
2022-11-07 13:43:43 C 08 02 25.476 +09 53 04.06 V T08
2022-11-07 13:46:22 C 08 02 25.661 +09 53 08.09 V T08
2022-11-07 13:51:02 C 08 02 25.987 +09 53 14.75 V T08
2022-11-07 14:04:21 C 08 02 26.897 +09 53 34.37 V T08
2022-11-07 14:05:25 C 08 02 27.014 +09 53 34.40 V T05
2022-11-07 14:42:07 C 08 02 29.510 +09 54 27.90 V T05
2022-11-07 14:44:43 C 08 02 29.683 +09 54 31.79 V T05
2022-11-07 15:11:19 C 08 02 31.474 +09 55 10.42 V T05
2022-11-07 15:40:05 C 08 02 33.413 +09 55 51.96 V T05
2022-11-07 23:41:02 C 08 03 17.890 +10 06 46.67 X B72
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)