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
2022-08-04 00:23:55 C 22 54 42.106 -21 31 52.92 X L10
2022-08-04 00:24:25 C 22 54 42.141 -21 31 53.21 X L10
2022-08-04 00:24:55 C 22 54 42.161 -21 31 53.34 X L10
2022-08-04 00:25:25 C 22 54 42.207 -21 31 53.80 X L10
2022-08-04 02:06:52 C 22 54 48.469 -21 32 44.06 X L10
2022-08-04 02:07:22 C 22 54 48.490 -21 32 44.03 X L10
2022-08-04 02:07:52 C 22 54 48.528 -21 32 44.32 X L10
2022-08-04 02:08:22 C 22 54 48.555 -21 32 44.69 X L10
2022-08-04 02:08:52 C 22 54 48.591 -21 32 45.05 X L10
2022-08-04 02:09:22 C 22 54 48.613 -21 32 45.12 X L10
2022-08-04 02:09:52 C 22 54 48.646 -21 32 45.36 X L10
2022-08-04 02:10:22 C 22 54 48.686 -21 32 45.63 X L10
2022-08-04 02:10:52 C 22 54 48.707 -21 32 45.86 X L10
2022-08-04 02:11:22 C 22 54 48.752 -21 32 46.05 X L10
2022-08-04 15:39:55 C 22 55 44.84 -21 39 00.7 q E89
2022-08-04 15:55:47 C 22 55 45.84 -21 39 08.6 q E89
2022-08-04 16:09:00 C 22 55 46.66 -21 39 15.3 q E89
2022-08-04 16:23:14 C 22 55 47.57 -21 39 22.4 q E89
2022-08-04 23:06:10 C 22 56 17.192 -21 43 25.06 X L10
2022-08-04 23:06:40 C 22 56 17.225 -21 43 25.42 X L10
2022-08-04 23:07:10 C 22 56 17.260 -21 43 25.68 X L10
2022-08-04 23:07:40 C 22 56 17.296 -21 43 26.01 X L10
2022-08-04 23:08:10 C 22 56 17.327 -21 43 26.14 X L10
2022-08-04 23:08:40 C 22 56 17.350 -21 43 26.52 X L10
2022-08-04 23:09:10 C 22 56 17.377 -21 43 26.63 X L10
2022-08-04 23:09:40 C 22 56 17.416 -21 43 26.86 X L10
2022-08-04 23:10:10 C 22 56 17.440 -21 43 27.28 X L10
2022-08-04 23:10:40 C 22 56 17.461 -21 43 27.43 X L10
2022-08-05 00:33:01 C 22 56 22.631 -21 44 10.65 X L10
2022-08-05 00:33:31 C 22 56 22.650 -21 44 10.93 X L10
2022-08-05 00:34:01 C 22 56 22.688 -21 44 11.29 X L10
2022-08-05 00:34:31 C 22 56 22.717 -21 44 11.49 X L10
2022-08-05 00:35:01 C 22 56 22.742 -21 44 11.55 X L10
2022-08-05 00:35:31 C 22 56 22.777 -21 44 11.84 X L10
2022-08-05 00:36:01 C 22 56 22.814 -21 44 12.22 X L10
2022-08-05 00:36:31 C 22 56 22.835 -21 44 12.53 X L10
2022-08-05 00:37:01 C 22 56 22.866 -21 44 12.69 X L10
2022-08-05 00:37:31 C 22 56 22.906 -21 44 12.82 X L10
2022-08-05 02:28:11 C 22 56 29.838 -21 45 09.21 X L10
2022-08-05 02:29:11 C 22 56 29.903 -21 45 09.53 X L10
2022-08-05 02:29:41 C 22 56 29.963 -21 45 10.07 X L10
2022-08-05 02:30:11 C 22 56 29.954 -21 45 10.38 X L10
2022-08-05 02:30:41 C 22 56 29.993 -21 45 10.78 X L10
2022-08-05 02:31:11 C 22 56 30.011 -21 45 10.80 X L10
2022-08-05 02:31:41 C 22 56 30.050 -21 45 11.19 X L10
2022-08-05 02:32:11 C 22 56 30.070 -21 45 11.44 X L10
2022-08-05 02:32:41 C 22 56 30.110 -21 45 11.64 X L10
2022-08-10 04:27:40 C 23 05 26.657 -22 53 35.70 V W68
2022-08-10 04:40:45 C 23 05 27.533 -22 53 43.87 V W68
2022-08-10 05:16:04 C 23 05 29.945 -22 54 06.34 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)