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
2022-07-25 01:38:09 C 22 39 01.687 -19 52 58.23 X L10
2022-07-25 01:39:11 C 22 39 01.743 -19 52 58.55 X L10
2022-07-25 01:40:14 C 22 39 01.804 -19 52 58.89 X L10
2022-07-25 01:41:16 C 22 39 01.864 -19 52 59.24 X L10
2022-07-25 01:42:19 C 22 39 01.920 -19 52 59.59 X L10
2022-07-25 01:43:21 C 22 39 01.986 -19 52 59.92 X L10
2022-07-25 07:12:27 C 22 39 23.141 -19 54 24.55 V W68
2022-07-25 07:17:35 C 22 39 23.410 -19 54 26.75 V W68
2022-07-25 07:26:01 C 22 39 23.868 -19 54 29.92 V W68
2022-07-25 07:43:25 C 22 39 24.840 -19 54 34.96 V W68
2022-07-26 06:20:07 C 22 40 51.679 -20 02 20.65 V W68
2022-07-26 06:24:52 C 22 40 51.943 -20 02 22.31 V W68
2022-07-26 06:33:24 C 22 40 52.450 -20 02 25.33 V W68
2022-07-26 06:49:21 C 22 40 53.369 -20 02 30.70 V W68
2022-07-26 07:54:16 C 22 40 56.91 -20 02 57.0 V W94
2022-07-26 08:02:46 C 22 40 57.45 -20 02 59.9 V W94
2022-07-26 08:11:05 C 22 40 57.97 -20 03 02.7 V W94
2022-07-28 09:54:17 C 22 44 08.738 -20 21 17.54 X W85
2022-07-28 09:55:49 C 22 44 08.827 -20 21 18.11 X W85
2022-07-28 09:57:20 C 22 44 08.915 -20 21 18.67 X W85
2022-07-28 09:58:51 C 22 44 09.003 -20 21 19.18 X W85
2022-07-28 10:00:23 C 22 44 09.098 -20 21 19.79 X W85
2022-07-28 10:01:54 C 22 44 09.185 -20 21 20.29 X W85
2022-07-28 10:03:25 C 22 44 09.275 -20 21 20.87 X W85
2022-07-28 11:39:16 C 22 44 17.069 -20 22 21.03 U F52
2022-07-28 11:55:44 C 22 44 18.012 -20 22 27.52 U F52
2022-07-28 12:12:13 C 22 44 18.957 -20 22 34.01 U F52
2022-07-29 07:11:29 C 22 45 32.441 -20 29 41.32 V W68
2022-07-29 07:16:07 C 22 45 32.714 -20 29 43.26 V W68
2022-07-29 07:24:40 C 22 45 33.221 -20 29 46.43 V W68
2022-07-29 07:55:24 C 22 45 34.990 -20 29 58.70 V W68
2022-07-29 15:24:58 C 22 46 05.029 -20 32 59.95 X Q63
2022-07-29 15:26:30 C 22 46 05.120 -20 33 00.58 X Q63
2022-07-29 15:28:03 C 22 46 05.209 -20 33 01.20 X Q63
2022-07-29 15:29:34 C 22 46 05.301 -20 33 01.87 X Q63
2022-07-29 15:31:06 C 22 46 05.390 -20 33 02.54 X Q63
2022-07-29 19:44:45 C 22 46 20.302 -20 34 43.11 X Q63
2022-07-29 19:46:17 C 22 46 20.403 -20 34 43.74 X Q63
2022-07-29 19:47:48 C 22 46 20.489 -20 34 44.34 X Q63
2022-07-29 19:49:20 C 22 46 20.584 -20 34 44.94 X Q63
2022-07-29 19:50:52 C 22 46 20.678 -20 34 45.49 X Q63
2022-07-29 19:52:23 C 22 46 20.773 -20 34 46.09 X Q63
2022-07-29 19:53:55 C 22 46 20.864 -20 34 46.67 X Q63
2022-08-01 00:03:48 C 22 49 48.629 -20 57 08.35 V M22
2022-08-01 00:09:31 C 22 49 48.970 -20 57 11.02 V M22
2022-08-01 00:18:57 C 22 49 49.538 -20 57 15.41 V M22
2022-08-01 00:32:59 C 22 49 50.357 -20 57 21.74 V M22
2022-08-02 07:27:29 C 22 51 54.235 -21 11 32.39 V W68
2022-08-02 07:35:11 C 22 51 54.698 -21 11 35.88 V W68
2022-08-02 07:39:18 C 22 51 54.938 -21 11 37.68 V W68
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)