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
2022-08-31 20:10:46 C 00 01 18.46 -29 56 59.9 Y 190
2022-08-31 20:11:20 C 00 01 18.58 -29 57 00.6 Y 190
2022-08-31 20:12:31 C 00 01 18.69 -29 57 01.0 Y 190
2022-08-31 20:13:04 C 00 01 18.76 -29 57 01.5 Y 190
2022-08-31 20:13:37 C 00 01 18.84 -29 57 02.0 Y 190
2022-08-31 20:14:11 C 00 01 18.93 -29 57 02.3 Y 190
2022-08-31 20:14:44 C 00 01 19.00 -29 57 04.4 Y 190
2022-08-31 20:15:18 C 00 01 19.09 -29 57 03.5 Y 190
2022-08-31 20:15:50 C 00 01 19.18 -29 57 03.8 Y 190
2022-08-31 20:16:57 C 00 01 19.38 -29 57 05.1 Y 190
2022-08-31 20:17:31 C 00 01 19.38 -29 57 07.1 Y 190
2022-08-31 20:19:01 C 00 01 19.68 -29 57 07.4 Y 190
2022-08-31 20:19:33 C 00 01 19.76 -29 57 08.0 Y 190
2022-08-31 20:21:47 C 00 01 20.06 -29 57 10.3 Y 190
2022-08-31 20:22:55 C 00 01 20.22 -29 57 11.3 Y 190
2022-08-31 20:23:28 C 00 01 20.29 -29 57 11.9 Y 190
2022-08-31 20:36:22 C 00 01 22.18 -29 57 24.5 Y 190
2022-08-31 20:37:25 C 00 01 22.27 -29 57 25.0 Y 190
2022-08-31 20:38:29 C 00 01 22.43 -29 57 26.4 Y 190
2022-08-31 20:39:32 C 00 01 22.61 -29 57 27.3 Y 190
2022-08-31 20:40:35 C 00 01 22.75 -29 57 28.5 Y 190
2022-08-31 20:41:38 C 00 01 22.88 -29 57 29.4 Y 190
2022-08-31 20:42:41 C 00 01 23.03 -29 57 30.7 Y 190
2022-08-31 20:43:45 C 00 01 23.20 -29 57 31.5 Y 190
2022-08-31 20:44:48 C 00 01 23.33 -29 57 32.7 Y 190
2022-08-31 20:45:51 C 00 01 23.50 -29 57 33.6 Y 190
2022-08-31 20:47:11 C 00 01 23.69 -29 57 34.9 Y 190
2022-08-31 20:48:14 C 00 01 23.80 -29 57 35.7 Y 190
2022-08-31 20:49:18 C 00 01 24.01 -29 57 37.1 Y 190
2022-08-31 20:50:21 C 00 01 24.14 -29 57 38.2 Y 190
2022-08-31 20:51:25 C 00 01 24.29 -29 57 38.8 Y 190
2022-08-31 20:52:28 C 00 01 24.45 -29 57 40.1 Y 190
2022-08-31 20:53:32 C 00 01 24.62 -29 57 41.2 Y 190
2022-08-31 20:54:35 C 00 01 24.75 -29 57 42.0 Y 190
2022-08-31 20:55:39 C 00 01 24.92 -29 57 43.1 Y 190
2022-08-31 20:56:43 C 00 01 25.03 -29 57 43.9 Y 190
2022-08-31 20:58:34 C 00 01 25.32 -29 57 45.8 Y 190
2022-08-31 20:59:37 C 00 01 25.48 -29 57 46.5 Y 190
2022-08-31 21:00:41 C 00 01 25.62 -29 57 47.8 Y 190
2022-08-31 21:01:44 C 00 01 25.79 -29 57 49.1 Y 190
2022-08-31 21:02:47 C 00 01 25.98 -29 57 50.1 Y 190
2022-08-31 21:03:50 C 00 01 26.10 -29 57 50.9 Y 190
2022-08-31 21:04:54 C 00 01 26.27 -29 57 52.2 Y 190
2022-08-31 21:05:57 C 00 01 26.41 -29 57 52.9 Y 190
2022-08-31 21:07:01 C 00 01 26.52 -29 57 53.9 Y 190
2022-08-31 21:08:04 C 00 01 26.73 -29 57 55.3 Y 190
2022-09-01 09:31:19 C 00 03 29.619 -30 09 44.61 U F52
2022-09-01 09:46:01 C 00 03 31.783 -30 10 00.50 U F52
2022-09-01 10:00:35 C 00 03 33.932 -30 10 15.52 U F52
2022-09-01 10:15:12 C 00 03 36.068 -30 10 30.63 U F52
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)