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
2022-11-07 23:43:12 C 08 03 18.048 +10 06 49.70 X B72
2022-11-07 23:45:22 C 08 03 18.253 +10 06 52.79 X B72
2022-11-07 23:47:32 C 08 03 18.394 +10 06 56.28 X B72
2022-11-07 23:53:17 C 08 03 18.861 +10 07 04.68 X B72
2022-11-07 23:56:51 C 08 03 19.155 +10 07 09.38 X B72
2022-11-07 23:59:01 C 08 03 19.328 +10 07 12.51 X B72
2022-11-08 00:01:11 C 08 03 19.485 +10 07 15.94 X B72
2022-11-08 00:03:21 C 08 03 19.659 +10 07 18.97 X B72
2022-11-08 00:05:31 C 08 03 19.835 +10 07 22.44 X B72
2022-11-08 00:07:41 C 08 03 20.011 +10 07 25.12 X B72
2022-11-08 13:29:11 C 08 04 26.328 +10 26 59.71 V T08
2022-11-08 13:31:51 C 08 04 26.491 +10 27 03.42 V T08
2022-11-08 13:35:51 C 08 04 26.750 +10 27 09.22 V T08
2022-11-09 22:42:19 C 08 07 04.46 +11 12 21.0 V C40
2022-11-09 22:57:14 C 08 07 05.45 +11 12 41.7 V C40
2022-11-09 23:06:33 C 08 07 06.07 +11 12 54.6 V C40
2022-11-09 23:14:00 C 08 07 06.56 +11 13 04.9 V C40
2022-11-09 23:21:27 C 08 07 07.05 +11 13 15.1 V C40
2022-11-09 23:45:55 C 08 07 08.63 +11 13 48.8 V C40
2022-11-09 23:53:22 C 08 07 09.11 +11 13 59.1 V C40
2022-11-10 12:20:39 C 08 08 05.765 +11 31 07.14 V T05
2022-11-10 12:25:13 C 08 08 06.038 +11 31 13.44 V T05
2022-11-10 12:33:05 C 08 08 06.504 +11 31 24.06 V T05
2022-11-10 13:10:20 C 08 08 08.659 +11 32 14.86 V T05
2022-11-11 01:00:10 C 08 08 59.664 +11 47 23.14 X K74
2022-11-11 01:04:36 C 08 08 59.926 +11 47 28.82 X K74
2022-11-11 01:08:31 C 08 09 00.180 +11 47 34.30 X K74
2022-11-12 10:08:27 S 08 11 14.367 +12 30 29.00 X 275
2022-11-14 10:51:24 S 08 14 07.432 +13 30 54.23 X 275
2022-11-14 13:30:57 C 08 14 16.778 +13 33 53.86 V U55
2022-11-14 13:45:21 C 08 14 17.402 +13 34 10.60 V U55
2022-11-14 13:58:14 C 08 14 17.942 +13 34 26.47 V U55
2022-11-15 08:50:22 S 08 15 22.239 +13 57 08.25 X 275
2022-11-16 07:54:07 C 08 16 29.885 +14 25 28.06 V W68
2022-11-16 07:59:19 C 08 16 30.055 +14 25 33.96 V W68
2022-11-16 08:11:46 C 08 16 30.466 +14 25 48.83 V W68
2022-11-16 08:24:15 C 08 16 30.874 +14 26 03.52 V W68
2022-11-16 14:19:07 C 08 16 47.443 +14 32 07.30 V T08
2022-11-16 14:30:40 C 08 16 47.798 +14 32 20.80 V T08
2022-11-16 15:03:20 C 08 16 48.751 +14 32 58.78 V T08
2022-11-18 01:40:16 C 08 18 22.44 +15 12 15.2 V Z39
2022-11-18 01:46:15 C 08 18 20.887 +15 13 25.18 V M22
2022-11-18 01:52:51 C 08 18 21.062 +15 13 32.63 V M22
2022-11-18 02:04:27 C 08 18 21.358 +15 13 46.02 V M22
2022-11-18 02:14:52 C 08 18 21.626 +15 13 57.86 V M22
2022-11-18 02:42:11 C 08 18 24.29 +15 13 27.6 V Z39
2022-11-18 03:48:17 C 08 18 26.09 +15 14 44.2 V Z39
2022-11-18 04:23:04 C 08 18 25.84 +15 15 03.7 V C23
2022-11-18 04:36:00 C 08 18 26.22 +15 15 18.1 V C23
2022-11-18 04:48:56 C 08 18 26.59 +15 15 32.6 V C23
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)