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
2022-08-29 19:32:01 C 23 53 55.33 -29 09 58.3 Y 190
2022-08-29 19:33:04 C 23 53 55.43 -29 09 59.4 Y 190
2022-08-29 19:34:07 C 23 53 55.63 -29 10 01.0 Y 190
2022-08-29 19:35:11 C 23 53 55.78 -29 10 01.0 Y 190
2022-08-29 19:36:14 C 23 53 55.91 -29 10 02.5 Y 190
2022-08-29 19:37:18 C 23 53 56.02 -29 10 03.3 Y 190
2022-08-29 19:38:21 C 23 53 56.17 -29 10 04.6 Y 190
2022-08-29 19:39:25 C 23 53 56.31 -29 10 06.0 Y 190
2022-08-29 19:40:28 C 23 53 56.45 -29 10 06.5 Y 190
2022-08-29 19:59:39 C 23 53 58.91 -29 10 25.5 Y 190
2022-08-29 20:00:42 C 23 53 59.05 -29 10 25.9 Y 190
2022-08-29 20:01:46 C 23 53 59.23 -29 10 27.4 Y 190
2022-08-29 20:02:49 C 23 53 59.38 -29 10 29.3 Y 190
2022-08-29 20:03:53 C 23 53 59.46 -29 10 29.5 Y 190
2022-08-29 20:04:56 C 23 53 59.64 -29 10 30.9 Y 190
2022-08-29 20:06:00 C 23 53 59.79 -29 10 31.5 Y 190
2022-08-29 20:07:03 C 23 53 59.91 -29 10 32.7 Y 190
2022-08-29 20:08:07 C 23 54 00.02 -29 10 34.0 Y 190
2022-08-29 20:09:10 C 23 54 00.18 -29 10 34.3 Y 190
2022-08-29 20:11:15 C 23 54 00.46 -29 10 36.8 Y 190
2022-08-29 20:12:19 C 23 54 00.59 -29 10 37.9 Y 190
2022-08-29 20:13:22 C 23 54 00.71 -29 10 38.7 Y 190
2022-08-29 20:14:26 C 23 54 00.89 -29 10 40.1 Y 190
2022-08-29 20:15:29 C 23 54 01.00 -29 10 40.9 Y 190
2022-08-29 20:16:32 C 23 54 01.16 -29 10 42.0 Y 190
2022-08-29 20:17:36 C 23 54 01.30 -29 10 42.9 Y 190
2022-08-29 20:18:39 C 23 54 01.42 -29 10 44.0 Y 190
2022-08-29 20:19:42 C 23 54 01.55 -29 10 45.2 Y 190
2022-08-29 20:20:46 C 23 54 01.70 -29 10 45.6 Y 190
2022-08-29 20:22:19 C 23 54 01.90 -29 10 47.3 Y 190
2022-08-29 20:23:23 C 23 54 02.04 -29 10 48.5 Y 190
2022-08-29 20:24:26 C 23 54 02.19 -29 10 49.6 Y 190
2022-08-29 20:25:29 C 23 54 02.33 -29 10 50.5 Y 190
2022-08-29 20:26:33 C 23 54 02.47 -29 10 51.7 Y 190
2022-08-29 20:27:36 C 23 54 02.59 -29 10 52.6 Y 190
2022-08-29 20:28:40 C 23 54 02.74 -29 10 53.4 Y 190
2022-08-29 20:29:43 C 23 54 02.86 -29 10 54.6 Y 190
2022-08-29 20:30:46 C 23 54 03.01 -29 10 55.6 Y 190
2022-08-29 20:31:50 C 23 54 03.16 -29 10 56.5 Y 190
2022-08-29 20:37:34 C 23 54 03.90 -29 11 02.4 Y 190
2022-08-29 20:38:37 C 23 54 04.06 -29 11 03.2 Y 190
2022-08-29 20:48:35 C 23 54 05.33 -29 11 13.1 Y 190
2022-08-29 20:49:39 C 23 54 05.46 -29 11 14.0 Y 190
2022-08-29 20:50:42 C 23 54 05.60 -29 11 14.7 Y 190
2022-08-29 20:51:46 C 23 54 05.72 -29 11 15.8 Y 190
2022-08-29 20:52:49 C 23 54 05.87 -29 11 16.9 Y 190
2022-08-29 20:53:53 C 23 54 06.03 -29 11 18.1 Y 190
2022-08-29 20:54:56 C 23 54 06.18 -29 11 18.9 Y 190
2022-08-29 20:55:59 C 23 54 06.28 -29 11 19.8 Y 190
2022-08-29 20:57:03 C 23 54 06.36 -29 11 20.4 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)