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
2023-01-16 01:54:38 C 07 21 47.00 +30 46 14.1 X W62
2023-01-16 02:06:10 C 07 21 46.33 +30 46 15.4 X W62
2023-01-16 02:09:24 C 07 21 43.627 +30 46 14.66 W M01
2023-01-16 02:09:24 C 07 21 43.662 +30 46 14.69 W M01
2023-01-16 02:17:21 C 07 21 45.77 +30 46 16.5 X W62
2023-01-16 04:26:31 B 07 21 38.87 +30 46 26.4 V H89
2023-01-16 05:37:05 B 07 21 35.16 +30 46 31.6 V H89
2023-01-16 06:42:26 B 07 21 31.74 +30 46 35.5 V H89
2023-01-16 12:56:02 C 07 21 15.77 +30 47 07.2 V P87
2023-01-16 13:15:09 C 07 21 14.74 +30 47 09.2 V P87
2023-01-16 13:34:15 C 07 21 13.72 +30 47 10.9 V P87
2023-01-16 17:13:09 C 07 21 02.46 +30 47 25.9 V D29
2023-01-16 17:33:31 C 07 21 01.39 +30 47 26.9 V D29
2023-01-16 17:53:52 C 07 21 00.33 +30 47 27.7 V D29
2023-01-17 19:36:41 C 07 19 53.35 +30 48 48.1 V C23
2023-01-17 19:38:51 C 07 19 53.23 +30 48 47.7 V C23
2023-01-17 19:42:05 C 07 19 53.10 +30 48 48.5 V C23
2023-01-17 19:49:41 C 07 19 52.726 +30 48 49.79 X B72
2023-01-17 20:11:41 C 07 19 51.655 +30 48 51.44 X B72
2023-01-17 20:58:58 C 07 19 48.77 +30 48 58.0 V C40
2023-01-17 21:05:11 C 07 19 48.47 +30 48 58.3 V C40
2023-01-17 21:11:20 C 07 19 48.17 +30 48 58.7 V C40
2023-01-17 21:38:46 C 07 19 46.80 +30 48 59.9 V C40
2023-01-17 21:40:21 C 07 19 46.65 +30 49 00.4 V B18
2023-01-17 21:41:30 C 07 19 46.59 +30 49 00.5 V B18
2023-01-17 21:42:04 C 07 19 46.56 +30 49 00.5 V B18
2023-01-17 21:43:18 C 07 19 46.50 +30 49 00.5 V B18
2023-01-17 21:43:52 C 07 19 46.47 +30 49 00.6 V B18
2023-01-17 21:44:28 C 07 19 46.45 +30 49 00.6 V B18
2023-01-17 21:45:01 C 07 19 46.42 +30 49 00.6 V B18
2023-01-17 21:45:36 C 07 19 46.39 +30 49 00.6 V B18
2023-01-17 21:46:09 C 07 19 46.36 +30 49 00.6 V B18
2023-01-17 21:46:45 C 07 19 46.34 +30 49 00.7 V B18
2023-01-17 21:47:19 C 07 19 46.31 +30 49 00.7 V B18
2023-01-17 22:03:27 C 07 19 45.56 +30 49 00.7 V C40
2023-01-18 06:43:02 S 07 19 23.049 +30 49 31.17 X 275
2023-01-18 22:19:52 C 07 18 45.322 +30 49 57.25 V Z80
2023-01-18 22:28:22 C 07 18 44.914 +30 49 57.25 V Z80
2023-01-18 22:36:53 C 07 18 44.556 +30 49 57.65 V Z80
2023-01-19 17:01:52 C 07 18 01.48 +30 50 26.5 V C40
2023-01-19 17:19:07 C 07 18 00.78 +30 50 27.3 V C40
2023-01-19 17:36:16 C 07 18 00.03 +30 50 28.3 V C40
2023-01-19 18:09:44 C 07 17 58.60 +30 50 29.8 V C40
2023-01-19 18:22:47 C 07 17 58.02 +30 50 30.6 V C40
2023-01-19 18:35:45 C 07 17 57.45 +30 50 30.8 V C40
2023-01-20 07:54:33 C 07 17 27.271 +30 50 54.22 U F52
2023-01-20 08:11:51 C 07 17 26.508 +30 50 54.84 U F52
2023-01-20 08:29:08 C 07 17 25.745 +30 50 55.36 U F52
2023-01-20 08:46:33 C 07 17 24.972 +30 50 55.82 U F52
2023-01-20 17:13:12 C 07 17 06.98 +30 50 47.7 V C40
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)