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
2023-01-12 22:43:54 C 07 25 35.15 +30 38 20.6 V B18
2023-01-12 22:44:30 C 07 25 35.11 +30 38 20.7 V B18
2023-01-12 22:45:06 C 07 25 35.08 +30 38 20.8 V B18
2023-01-12 22:45:40 C 07 25 35.04 +30 38 20.9 V B18
2023-01-13 04:28:43 C 07 25 18.296 +30 39 08.86 V 703
2023-01-13 04:36:33 C 07 25 17.843 +30 39 09.97 V 703
2023-01-13 04:44:22 C 07 25 17.368 +30 39 11.38 V 703
2023-01-13 04:52:12 C 07 25 16.896 +30 39 12.56 V 703
2023-01-13 10:24:09 C 07 24 58.056 +30 40 02.32 V T05
2023-01-13 10:28:39 C 07 24 57.780 +30 40 02.93 V T05
2023-01-13 10:43:38 C 07 24 56.846 +30 40 04.80 V T05
2023-01-13 11:07:58 C 07 24 55.342 +30 40 07.57 V T05
2023-01-14 07:53:45 C 07 23 51.702 +30 42 29.76 U F52
2023-01-14 08:10:06 C 07 23 50.746 +30 42 32.05 U F52
2023-01-14 08:26:28 C 07 23 49.788 +30 42 34.23 U F52
2023-01-14 08:42:52 C 07 23 48.819 +30 42 36.30 U F52
2023-01-14 08:43:27 C 07 23 48.778 +30 42 36.47 V T05
2023-01-14 08:47:22 C 07 23 48.550 +30 42 36.90 V T05
2023-01-14 08:51:56 C 07 23 48.288 +30 42 37.58 V T05
2023-01-14 08:59:16 C 07 23 47.846 +30 42 38.63 V T05
2023-01-14 18:04:22 C 07 23 20.99 +30 43 19.9 Z L74
2023-01-14 18:07:53 C 07 23 20.77 +30 43 20.2 Z L74
2023-01-14 18:10:31 C 07 23 20.57 +30 43 20.9 Z L74
2023-01-14 23:59:01 C 07 23 00.66 +30 43 57.4 V B18
2023-01-14 23:59:36 C 07 23 00.62 +30 43 57.5 V B18
2023-01-15 00:01:28 C 07 23 00.52 +30 43 57.6 V B18
2023-01-15 00:02:05 C 07 23 00.49 +30 43 57.6 V B18
2023-01-15 00:02:39 C 07 23 00.46 +30 43 57.6 V B18
2023-01-15 00:03:15 C 07 23 00.43 +30 43 57.7 V B18
2023-01-15 00:03:49 C 07 23 00.39 +30 43 57.7 V B18
2023-01-15 00:04:26 C 07 23 00.36 +30 43 57.8 V B18
2023-01-15 00:05:00 C 07 23 00.33 +30 43 57.8 V B18
2023-01-15 00:05:36 C 07 23 00.30 +30 43 57.9 V B18
2023-01-15 00:06:12 C 07 23 00.27 +30 43 57.9 V B18
2023-01-15 20:08:28 C 07 22 03.60 +30 45 44.2 X C95
2023-01-15 20:19:05 C 07 22 03.03 +30 45 45.6 X C95
2023-01-15 22:17:43 C 07 21 55.79 +30 45 57.8 V B18
2023-01-15 22:18:19 C 07 21 55.76 +30 45 57.8 V B18
2023-01-15 22:18:53 C 07 21 55.73 +30 45 57.8 V B18
2023-01-15 22:20:04 C 07 21 55.67 +30 45 57.9 V B18
2023-01-15 22:20:40 C 07 21 55.64 +30 45 58.0 V B18
2023-01-15 22:23:04 C 07 21 55.51 +30 45 58.1 V B18
2023-01-15 22:24:14 C 07 21 55.44 +30 45 58.2 V B18
2023-01-15 22:25:25 C 07 21 55.38 +30 45 58.3 V B18
2023-01-15 22:26:36 C 07 21 55.32 +30 45 58.4 V B18
2023-01-15 22:27:46 C 07 21 55.25 +30 45 58.4 V B18
2023-01-15 22:29:34 C 07 21 55.16 +30 45 58.5 V B18
2023-01-15 23:54:58 C 07 21 50.650 +30 46 09.55 W M01
2023-01-16 01:01:39 C 07 21 47.086 +30 46 12.49 W M01
2023-01-16 01:01:40 C 07 21 47.086 +30 46 12.48 W M01
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)