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
2022-08-02 07:58:33 C 22 51 56.100 -21 11 46.68 V W68
2022-08-02 23:00:18 C 22 52 58.386 -21 19 24.75 X L10
2022-08-02 23:00:48 C 22 52 58.417 -21 19 24.85 X L10
2022-08-02 23:01:18 C 22 52 58.451 -21 19 25.14 X L10
2022-08-02 23:01:48 C 22 52 58.481 -21 19 25.29 X L10
2022-08-02 23:02:18 C 22 52 58.512 -21 19 25.50 X L10
2022-08-02 23:02:48 C 22 52 58.548 -21 19 25.84 X L10
2022-08-02 23:03:18 C 22 52 58.584 -21 19 26.15 X L10
2022-08-02 23:03:48 C 22 52 58.607 -21 19 26.45 X L10
2022-08-02 23:04:18 C 22 52 58.641 -21 19 26.66 X L10
2022-08-02 23:04:48 C 22 52 58.669 -21 19 26.83 X L10
2022-08-03 00:29:21 C 22 53 03.826 -21 20 08.27 X L10
2022-08-03 00:29:51 C 22 53 03.846 -21 20 08.52 X L10
2022-08-03 00:30:21 C 22 53 03.884 -21 20 08.67 X L10
2022-08-03 00:30:51 C 22 53 03.915 -21 20 08.96 X L10
2022-08-03 00:31:21 C 22 53 03.950 -21 20 09.24 X L10
2022-08-03 00:31:51 C 22 53 03.976 -21 20 09.45 X L10
2022-08-03 00:32:21 C 22 53 04.008 -21 20 09.87 X L10
2022-08-03 00:32:51 C 22 53 04.037 -21 20 09.95 X L10
2022-08-03 00:33:21 C 22 53 04.073 -21 20 10.22 X L10
2022-08-03 00:33:51 C 22 53 04.101 -21 20 10.42 X L10
2022-08-03 02:00:30 C 22 53 09.380 -21 20 51.71 X L10
2022-08-03 02:01:00 C 22 53 09.415 -21 20 52.08 X L10
2022-08-03 02:01:30 C 22 53 09.443 -21 20 52.30 X L10
2022-08-03 02:02:00 C 22 53 09.472 -21 20 52.56 X L10
2022-08-03 02:02:30 C 22 53 09.502 -21 20 52.68 X L10
2022-08-03 02:03:00 C 22 53 09.535 -21 20 52.96 X L10
2022-08-03 02:03:30 C 22 53 09.568 -21 20 53.26 X L10
2022-08-03 02:04:00 C 22 53 09.597 -21 20 53.51 X L10
2022-08-03 02:04:30 C 22 53 09.624 -21 20 53.71 X L10
2022-08-03 02:05:00 C 22 53 09.656 -21 20 53.88 X L10
2022-08-03 18:21:09 C 22 54 16.98 -21 28 50.9 V D29
2022-08-03 18:44:04 C 22 54 18.38 -21 29 02.1 V D29
2022-08-03 19:06:58 C 22 54 19.77 -21 29 13.3 V D29
2022-08-03 22:55:47 C 22 54 36.656 -21 31 08.23 X L10
2022-08-03 22:56:17 C 22 54 36.682 -21 31 08.44 X L10
2022-08-03 22:56:47 C 22 54 36.717 -21 31 08.57 X L10
2022-08-03 22:57:17 C 22 54 36.750 -21 31 08.90 X L10
2022-08-03 22:57:47 C 22 54 36.780 -21 31 09.27 X L10
2022-08-03 22:58:17 C 22 54 36.812 -21 31 09.35 X L10
2022-08-03 22:58:47 C 22 54 36.838 -21 31 09.57 X L10
2022-08-03 22:59:17 C 22 54 36.869 -21 31 09.82 X L10
2022-08-03 22:59:47 C 22 54 36.906 -21 31 10.22 X L10
2022-08-03 23:00:17 C 22 54 36.937 -21 31 10.39 X L10
2022-08-04 00:20:55 C 22 54 41.923 -21 31 51.46 X L10
2022-08-04 00:21:25 C 22 54 41.956 -21 31 51.78 X L10
2022-08-04 00:21:55 C 22 54 41.992 -21 31 51.98 X L10
2022-08-04 00:22:25 C 22 54 42.017 -21 31 52.13 X L10
2022-08-04 00:22:55 C 22 54 42.043 -21 31 52.48 X L10
2022-08-04 00:23:25 C 22 54 42.073 -21 31 52.64 X L10
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)