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
2022-10-01 20:54:18 C 04 21 54.68 -29 11 00.5 q M44
2022-10-01 20:56:15 C 04 21 55.57 -29 10 55.5 q M44
2022-10-01 20:58:01 C 04 21 56.39 -29 10 50.9 q M44
2022-10-01 20:59:48 C 04 21 57.22 -29 10 46.4 q M44
2022-10-01 21:01:45 C 04 21 58.11 -29 10 41.3 q M44
2022-10-01 21:03:44 C 04 21 59.03 -29 10 36.1 q M44
2022-10-01 21:05:36 C 04 21 59.89 -29 10 31.2 q M44
2022-10-01 21:07:26 C 04 22 00.73 -29 10 26.5 q M44
2022-10-01 21:09:16 C 04 22 01.58 -29 10 21.8 q M44
2022-10-01 21:26:02 C 04 22 09.21 -29 09 38.3 q M44
2022-10-01 21:28:21 C 04 22 10.27 -29 09 32.1 q M44
2022-10-01 21:30:40 C 04 22 11.34 -29 09 25.9 q M44
2022-10-01 21:33:09 C 04 22 12.49 -29 09 19.5 q M44
2022-10-01 21:35:29 C 04 22 13.55 -29 09 13.4 q M44
2022-10-01 21:37:48 C 04 22 14.61 -29 09 07.2 q M44
2022-10-01 21:40:18 C 04 22 15.77 -29 09 00.8 q M44
2022-10-01 21:42:42 C 04 22 16.86 -29 08 54.2 q M44
2022-10-01 21:45:07 C 04 22 17.95 -29 08 47.8 q M44
2022-10-01 21:47:46 C 04 22 19.17 -29 08 40.9 q M44
2022-10-01 21:50:05 C 04 22 20.23 -29 08 34.9 q M44
2022-10-01 21:52:24 C 04 22 21.29 -29 08 28.9 q M44
2022-10-01 21:55:29 C 04 22 22.70 -29 08 20.6 q M44
2022-10-01 21:58:22 C 04 22 24.00 -29 08 12.9 q M44
2022-10-01 22:00:41 C 04 22 25.05 -29 08 06.8 q M44
2022-10-01 22:03:11 C 04 22 26.19 -29 08 00.3 q M44
2022-10-01 22:05:30 C 04 22 27.23 -29 07 54.0 q M44
2022-10-01 22:07:48 C 04 22 28.29 -29 07 47.9 q M44
2022-10-01 22:10:19 C 04 22 29.43 -29 07 41.3 q M44
2022-10-01 22:12:39 C 04 22 30.48 -29 07 35.2 q M44
2022-10-01 22:14:58 C 04 22 31.54 -29 07 28.9 q M44
2022-10-01 22:17:29 C 04 22 32.67 -29 07 22.3 q M44
2022-10-01 22:19:48 C 04 22 33.72 -29 07 16.0 q M44
2022-10-01 22:22:07 C 04 22 34.77 -29 07 10.0 q M44
2022-10-01 22:25:09 C 04 22 36.15 -29 07 01.7 q M44
2022-10-01 22:27:59 C 04 22 37.44 -29 06 54.2 q M44
2022-10-01 22:30:02 C 04 22 38.35 -29 06 48.6 q M44
2022-10-01 22:31:50 C 04 22 39.16 -29 06 43.9 q M44
2022-10-01 22:33:39 C 04 22 39.98 -29 06 39.0 q M44
2022-10-01 22:35:28 C 04 22 40.80 -29 06 34.2 q M44
2022-10-02 00:52:04 C 04 23 44.36 -29 00 38.2 V C40
2022-10-02 00:54:26 C 04 23 45.44 -29 00 31.3 V C40
2022-10-02 00:56:47 C 04 23 46.52 -29 00 24.8 V C40
2022-10-02 01:06:43 C 04 23 51.07 -28 59 57.2 V C40
2022-10-02 01:28:37 C 04 24 01.02 -28 58 55.7 V C40
2022-10-02 01:29:09 C 04 24 01.25 -28 58 54.3 V C40
2022-10-02 01:30:55 C 04 24 02.07 -28 58 49.2 V C40
2022-10-02 02:44:41 C 04 24 40.89 -28 55 19.0 V J01
2022-10-02 02:56:22 C 04 24 46.20 -28 54 47.1 V J01
2022-10-02 03:08:04 C 04 24 51.56 -28 54 14.1 V J01
2022-10-02 03:43:18 C 04 25 07.43 -28 52 32.2 V I88
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)