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
2022-09-03 20:42:02 C 00 13 45.18 -31 07 53.4 Y 190
2022-09-03 20:42:36 C 00 13 45.30 -31 07 53.8 Y 190
2022-09-03 20:43:09 C 00 13 45.35 -31 07 53.9 Y 190
2022-09-03 20:43:42 C 00 13 45.47 -31 07 54.6 Y 190
2022-09-03 20:44:16 C 00 13 45.56 -31 07 55.3 Y 190
2022-09-03 20:44:49 C 00 13 45.65 -31 07 56.1 Y 190
2022-09-03 20:53:17 C 00 13 47.07 -31 08 03.9 Y 190
2022-09-03 20:53:51 C 00 13 47.20 -31 08 04.5 Y 190
2022-09-03 20:54:56 C 00 13 47.34 -31 08 05.9 Y 190
2022-09-03 20:55:30 C 00 13 47.45 -31 08 06.4 Y 190
2022-09-03 20:56:04 C 00 13 47.52 -31 08 07.6 Y 190
2022-09-03 20:56:36 C 00 13 47.59 -31 08 07.1 Y 190
2022-09-03 20:57:10 C 00 13 47.62 -31 08 08.7 Y 190
2022-09-03 20:57:43 C 00 13 47.73 -31 08 08.8 Y 190
2022-09-03 20:58:31 C 00 13 47.93 -31 08 09.1 Y 190
2022-09-03 20:59:04 C 00 13 48.01 -31 08 10.1 Y 190
2022-09-03 20:59:38 C 00 13 48.14 -31 08 10.7 Y 190
2022-09-03 21:00:12 C 00 13 48.21 -31 08 10.6 Y 190
2022-09-03 21:00:44 C 00 13 48.28 -31 08 11.2 Y 190
2022-09-03 21:01:18 C 00 13 48.37 -31 08 11.7 Y 190
2022-09-03 21:01:51 C 00 13 48.48 -31 08 12.2 Y 190
2022-09-03 21:02:25 C 00 13 48.58 -31 08 12.9 Y 190
2022-09-03 21:02:57 C 00 13 48.70 -31 08 13.8 Y 190
2022-09-03 21:03:31 C 00 13 48.77 -31 08 14.5 Y 190
2022-09-03 21:04:14 C 00 13 48.90 -31 08 15.0 Y 190
2022-09-03 21:04:47 C 00 13 48.97 -31 08 15.5 Y 190
2022-09-03 21:05:20 C 00 13 49.08 -31 08 15.9 Y 190
2022-09-03 21:05:53 C 00 13 49.18 -31 08 16.7 Y 190
2022-09-03 21:06:27 C 00 13 49.27 -31 08 17.0 Y 190
2022-09-03 21:06:59 C 00 13 49.33 -31 08 17.2 Y 190
2022-09-03 21:07:33 C 00 13 49.46 -31 08 18.2 Y 190
2022-09-03 21:08:06 C 00 13 49.58 -31 08 18.9 Y 190
2022-09-03 21:08:39 C 00 13 49.64 -31 08 18.9 Y 190
2022-09-03 21:09:12 C 00 13 49.74 -31 08 19.2 Y 190
2022-09-03 21:18:41 C 00 13 51.38 -31 08 28.6 Y 190
2022-09-03 21:19:44 C 00 13 51.46 -31 08 30.1 Y 190
2022-09-03 21:20:54 C 00 13 51.69 -31 08 31.0 Y 190
2022-09-03 21:21:57 C 00 13 51.92 -31 08 32.3 Y 190
2022-09-03 21:23:00 C 00 13 52.01 -31 08 32.6 Y 190
2022-09-03 21:24:04 C 00 13 52.25 -31 08 33.9 Y 190
2022-09-03 21:25:07 C 00 13 52.43 -31 08 35.1 Y 190
2022-09-03 21:26:10 C 00 13 52.54 -31 08 36.5 Y 190
2022-09-03 21:27:14 C 00 13 52.80 -31 08 37.1 Y 190
2022-09-03 21:28:17 C 00 13 52.95 -31 08 37.6 Y 190
2022-09-03 21:29:20 C 00 13 53.12 -31 08 39.0 Y 190
2022-09-03 21:30:24 C 00 13 53.29 -31 08 39.5 Y 190
2022-09-03 21:31:36 C 00 13 53.50 -31 08 41.4 Y 190
2022-09-03 21:32:39 C 00 13 53.73 -31 08 42.0 Y 190
2022-09-03 21:33:43 C 00 13 53.82 -31 08 43.3 Y 190
2022-09-03 21:34:46 C 00 13 54.00 -31 08 44.3 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)