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
2022-10-07 02:17:56 C 05 18 59.115 -22 31 42.96 V 089
2022-10-07 02:20:48 C 05 19 00.270 -22 31 32.72 V 089
2022-10-07 02:24:53 C 05 19 04.35 -22 31 16.2 V 204
2022-10-07 02:26:32 C 05 19 02.522 -22 31 13.21 V 089
2022-10-07 02:29:24 C 05 19 03.641 -22 31 02.83 V 089
2022-10-07 02:32:04 C 05 19 06.905 -22 30 54.54 V K74
2022-10-07 02:32:16 C 05 19 04.758 -22 30 53.04 V 089
2022-10-07 02:35:08 C 05 19 05.902 -22 30 42.72 V 089
2022-10-07 02:35:59 C 05 19 08.71 -22 30 37.8 V 204
2022-10-07 02:36:19 C 05 19 08.585 -22 30 39.71 V K74
2022-10-07 02:38:00 C 05 19 07.011 -22 30 32.61 V 089
2022-10-07 02:40:34 C 05 19 10.250 -22 30 24.84 V K74
2022-10-07 02:44:49 C 05 19 11.942 -22 30 10.22 V K74
2022-10-07 02:45:42 C 05 19 12.63 -22 30 07.1 V K85
2022-10-07 02:47:05 C 05 19 13.08 -22 29 59.4 V 204
2022-10-07 02:49:04 C 05 19 13.610 -22 29 55.57 V K74
2022-10-07 02:53:19 C 05 19 15.293 -22 29 40.56 V K74
2022-10-07 02:57:35 C 05 19 16.980 -22 29 25.98 V K74
2022-10-07 02:57:36 C 05 19 17.21 -22 29 22.8 V 204
2022-10-07 03:01:50 C 05 19 18.646 -22 29 11.08 V K74
2022-10-07 03:06:05 C 05 19 20.321 -22 28 56.21 V K74
2022-10-07 03:09:23 C 05 19 22.00 -22 28 45.2 V K85
2022-10-07 03:10:20 C 05 19 22.001 -22 28 41.66 V K74
2022-10-07 03:14:35 C 05 19 23.671 -22 28 26.44 V K74
2022-10-07 08:27:37 C 05 21 33.26 -22 08 52.8 q X33
2022-10-07 08:34:35 C 05 21 35.88 -22 08 28.3 q X33
2022-10-07 08:37:39 C 05 21 37.03 -22 08 17.3 q X33
2022-10-07 08:40:24 C 05 21 38.07 -22 08 07.6 q X33
2022-10-07 08:42:54 C 05 21 39.00 -22 07 58.8 q X33
2022-10-07 08:45:28 C 05 21 39.96 -22 07 49.6 q X33
2022-10-07 11:54:51 C 05 22 58.926 -21 57 42.77 V 703
2022-10-07 12:02:19 C 05 23 01.766 -21 57 15.84 V 703
2022-10-07 12:17:13 C 05 23 07.447 -21 56 23.17 V 703
2022-10-08 01:15:00 C 05 28 29.270 -21 08 26.05 V M22
2022-10-08 01:18:14 C 05 28 30.490 -21 08 14.68 V M22
2022-10-08 01:23:26 C 05 28 32.434 -21 07 56.68 V M22
2022-10-08 01:25:17 C 05 28 33.69 -21 10 01.1 V K83
2022-10-08 01:31:39 C 05 28 36.11 -21 09 38.8 V K83
2022-10-08 01:37:43 C 05 28 38.41 -21 09 17.8 V K83
2022-10-08 01:38:24 C 05 28 38.30 -21 09 18.3 V 595
2022-10-08 01:41:06 C 05 28 39.043 -21 06 54.97 V M22
2022-10-08 01:44:36 C 05 28 40.66 -21 08 56.8 V 595
2022-10-08 01:50:48 C 05 28 43.01 -21 08 35.0 V 595
2022-10-08 01:57:01 C 05 28 45.37 -21 08 13.4 V 595
2022-10-08 02:45:48 C 05 29 03.18 -21 05 24.2 q G23
2022-10-08 02:50:21 C 05 29 04.88 -21 05 07.7 q G23
2022-10-08 02:55:25 C 05 29 06.79 -21 04 49.7 q G23
2022-10-08 03:00:29 C 05 29 08.77 -21 04 31.9 q G23
2022-10-08 03:02:45 C 05 29 10.69 -21 04 21.9 V 204
2022-10-08 03:05:33 C 05 29 10.63 -21 04 13.8 q G23
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)