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
2022-08-29 20:58:06 C 23 54 06.58 -29 11 22.2 Y 190
2022-08-29 20:59:47 C 23 54 06.79 -29 11 23.4 Y 190
2022-08-29 21:00:50 C 23 54 06.93 -29 11 24.4 Y 190
2022-08-29 21:01:54 C 23 54 07.07 -29 11 25.5 Y 190
2022-08-29 21:02:57 C 23 54 07.21 -29 11 26.5 Y 190
2022-08-29 21:04:01 C 23 54 07.38 -29 11 27.6 Y 190
2022-08-29 21:05:04 C 23 54 07.46 -29 11 28.5 Y 190
2022-08-29 21:06:08 C 23 54 07.64 -29 11 29.4 Y 190
2022-08-29 21:07:11 C 23 54 07.73 -29 11 30.5 Y 190
2022-08-29 21:08:15 C 23 54 07.90 -29 11 31.5 Y 190
2022-08-29 21:09:18 C 23 54 08.03 -29 11 32.7 Y 190
2022-08-29 21:10:43 C 23 54 08.22 -29 11 33.7 Y 190
2022-08-29 21:11:47 C 23 54 08.36 -29 11 35.1 Y 190
2022-08-29 21:12:50 C 23 54 08.50 -29 11 35.9 Y 190
2022-08-29 21:13:54 C 23 54 08.63 -29 11 36.8 Y 190
2022-08-29 21:14:57 C 23 54 08.78 -29 11 38.0 Y 190
2022-08-29 21:16:01 C 23 54 08.97 -29 11 40.1 Y 190
2022-08-29 21:17:04 C 23 54 09.08 -29 11 39.8 Y 190
2022-08-29 21:18:08 C 23 54 09.20 -29 11 40.8 Y 190
2022-08-29 21:19:11 C 23 54 09.32 -29 11 41.9 Y 190
2022-08-29 21:20:14 C 23 54 09.47 -29 11 42.5 Y 190
2022-08-30 04:52:36 C 23 55 17.400 -29 18 02.12 V W68
2022-08-30 04:54:33 C 23 55 17.671 -29 18 03.96 V W68
2022-08-30 05:01:58 C 23 55 18.646 -29 18 11.30 V W68
2022-08-30 05:15:46 C 23 55 20.467 -29 18 24.88 V W68
2022-08-30 19:39:08 C 23 57 29.97 -29 33 10.1 Y 190
2022-08-30 19:48:52 C 23 57 31.33 -29 33 20.6 Y 190
2022-08-30 19:49:55 C 23 57 31.46 -29 33 21.3 Y 190
2022-08-30 19:50:59 C 23 57 31.63 -29 33 22.4 Y 190
2022-08-30 19:52:02 C 23 57 31.78 -29 33 24.1 Y 190
2022-08-30 19:53:06 C 23 57 31.91 -29 33 25.1 Y 190
2022-08-30 19:54:09 C 23 57 32.02 -29 33 25.9 Y 190
2022-08-30 19:55:13 C 23 57 32.16 -29 33 27.3 Y 190
2022-08-30 19:57:20 C 23 57 32.49 -29 33 28.6 Y 190
2022-08-30 19:58:23 C 23 57 32.61 -29 33 29.4 Y 190
2022-08-30 19:59:38 C 23 57 32.75 -29 33 31.0 Y 190
2022-08-30 20:00:42 C 23 57 32.92 -29 33 32.5 Y 190
2022-08-30 20:01:45 C 23 57 33.10 -29 33 33.0 Y 190
2022-08-30 20:02:49 C 23 57 33.24 -29 33 34.1 Y 190
2022-08-30 20:03:52 C 23 57 33.41 -29 33 35.0 Y 190
2022-08-30 20:04:56 C 23 57 33.54 -29 33 36.2 Y 190
2022-08-30 20:05:59 C 23 57 33.68 -29 33 37.3 Y 190
2022-08-30 20:08:06 C 23 57 33.92 -29 33 40.7 Y 190
2022-08-30 20:12:31 C 23 57 34.57 -29 33 43.8 Y 190
2022-08-30 20:13:34 C 23 57 34.70 -29 33 44.8 Y 190
2022-08-30 20:14:37 C 23 57 34.85 -29 33 45.8 Y 190
2022-08-30 20:15:40 C 23 57 34.99 -29 33 46.9 Y 190
2022-08-30 20:16:44 C 23 57 35.15 -29 33 47.8 Y 190
2022-08-30 20:17:47 C 23 57 35.29 -29 33 48.9 Y 190
2022-08-30 20:18:50 C 23 57 35.43 -29 33 49.8 Y 190
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)