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
2022-09-02 21:05:02 C 00 09 29.13 -30 44 46.9 Y 190
2022-09-02 21:06:06 C 00 09 29.20 -30 44 47.2 Y 190
2022-09-02 21:07:09 C 00 09 29.41 -30 44 48.9 Y 190
2022-09-02 21:08:12 C 00 09 29.62 -30 44 50.0 Y 190
2022-09-02 21:09:21 C 00 09 29.78 -30 44 50.9 Y 190
2022-09-02 21:10:24 C 00 09 29.93 -30 44 51.6 Y 190
2022-09-02 21:11:28 C 00 09 30.08 -30 44 52.6 Y 190
2022-09-02 21:12:31 C 00 09 30.27 -30 44 53.7 Y 190
2022-09-02 21:13:34 C 00 09 30.42 -30 44 55.2 Y 190
2022-09-02 21:14:37 C 00 09 30.60 -30 44 55.9 Y 190
2022-09-02 21:15:41 C 00 09 30.79 -30 44 56.5 Y 190
2022-09-02 21:18:51 C 00 09 31.26 -30 44 59.8 Y 190
2022-09-02 21:20:03 C 00 09 31.41 -30 45 01.1 Y 190
2022-09-02 21:21:07 C 00 09 31.62 -30 45 02.1 Y 190
2022-09-02 21:22:10 C 00 09 31.81 -30 45 03.1 Y 190
2022-09-02 21:23:14 C 00 09 31.96 -30 45 04.1 Y 190
2022-09-02 21:24:17 C 00 09 32.17 -30 45 05.4 Y 190
2022-09-02 21:25:20 C 00 09 32.33 -30 45 06.4 Y 190
2022-09-02 21:26:24 C 00 09 32.48 -30 45 07.4 Y 190
2022-09-02 21:27:27 C 00 09 32.66 -30 45 08.1 Y 190
2022-09-02 21:28:30 C 00 09 32.78 -30 45 09.2 Y 190
2022-09-02 21:29:34 C 00 09 32.98 -30 45 09.9 Y 190
2022-09-02 21:30:59 C 00 09 33.20 -30 45 11.7 Y 190
2022-09-02 21:31:53 C 00 09 33.34 -30 45 12.5 Y 190
2022-09-02 21:32:42 C 00 09 33.47 -30 45 13.3 Y 190
2022-09-02 21:33:30 C 00 09 33.59 -30 45 14.1 Y 190
2022-09-02 21:34:18 C 00 09 33.74 -30 45 14.7 Y 190
2022-09-03 20:31:07 C 00 13 43.35 -31 07 42.2 Y 190
2022-09-03 20:31:31 C 00 13 43.41 -31 07 42.2 Y 190
2022-09-03 20:31:54 C 00 13 43.44 -31 07 43.0 Y 190
2022-09-03 20:32:17 C 00 13 43.51 -31 07 43.3 Y 190
2022-09-03 20:32:40 C 00 13 43.57 -31 07 44.1 Y 190
2022-09-03 20:33:04 C 00 13 43.66 -31 07 44.5 Y 190
2022-09-03 20:33:27 C 00 13 43.74 -31 07 43.9 Y 190
2022-09-03 20:33:50 C 00 13 43.76 -31 07 44.7 Y 190
2022-09-03 20:34:14 C 00 13 43.86 -31 07 45.2 Y 190
2022-09-03 20:34:37 C 00 13 43.92 -31 07 45.4 Y 190
2022-09-03 20:35:00 C 00 13 43.97 -31 07 46.6 Y 190
2022-09-03 20:35:23 C 00 13 44.07 -31 07 45.9 Y 190
2022-09-03 20:35:46 C 00 13 44.10 -31 07 47.4 Y 190
2022-09-03 20:36:10 C 00 13 44.20 -31 07 47.0 Y 190
2022-09-03 20:37:01 C 00 13 44.30 -31 07 48.4 Y 190
2022-09-03 20:37:35 C 00 13 44.42 -31 07 49.0 Y 190
2022-09-03 20:38:09 C 00 13 44.53 -31 07 49.5 Y 190
2022-09-03 20:38:42 C 00 13 44.62 -31 07 49.8 Y 190
2022-09-03 20:39:15 C 00 13 44.70 -31 07 50.7 Y 190
2022-09-03 20:39:48 C 00 13 44.82 -31 07 50.8 Y 190
2022-09-03 20:40:22 C 00 13 44.87 -31 07 51.5 Y 190
2022-09-03 20:40:56 C 00 13 45.01 -31 07 51.8 Y 190
2022-09-03 20:41:28 C 00 13 45.06 -31 07 52.6 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)