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
2003-11-21 05:51:50 C 03 23 39.040 +01 10 19.39 V 703
2003-11-21 06:11:21 C 03 23 44.834 +01 12 14.52 V 703
2003-11-21 06:30:50 C 03 23 50.605 +01 14 09.46 V 703
2003-11-21 06:50:18 C 03 23 56.37 +01 16 04.4 d 703
2003-11-21 13:38:47 C 03 26 12.78 +01 55 42.5 m 379
2003-11-21 13:50:56 C 03 26 16.30 +01 56 52.6 m 379
2003-11-21 13:57:23 C 03 26 18.19 +01 57 29.9 m 379
2003-11-21 14:01:40 C 03 26 19.42 +01 57 54.8 m 379
2003-11-21 19:43:20 C 03 28 14.06 +02 29 59.7 r 557
2003-11-21 20:13:14 C 03 28 23.00 +02 32 50.1 r 557
2003-11-21 20:43:28 C 03 28 31.95 +02 35 41.8 r 557
2003-11-21 21:01:04 C 03 28 37.145 +02 37 21.67 X 557
2003-11-21 21:12:56 C 03 28 40.63 +02 38 28.9 r 557
2003-11-21 21:15:26 C 03 28 41.367 +02 38 43.03 X 557
2003-11-21 21:28:02 C 03 28 45.058 +02 39 54.40 X 557
2003-11-21 21:43:58 C 03 28 49.71 +02 41 24.5 r 557
2003-11-21 21:45:40 C 03 28 50.211 +02 41 34.08 X 557
2003-11-21 22:14:02 C 03 28 58.48 +02 44 14.4 r 557
2003-11-21 22:43:25 C 03 29 07.02 +02 47 00.0 r 557
2003-11-21 22:45:05 C 03 29 07.514 +02 47 09.44 X 557
2003-11-21 23:05:14 C 03 29 13.368 +02 49 02.86 X 557
2003-11-21 23:13:37 C 03 29 15.81 +02 49 50.1 r 557
2003-11-21 23:17:50 C 03 29 17.028 +02 50 13.62 X 557
2003-11-21 23:38:50 C 03 29 23.143 +02 52 11.61 X 557
2003-11-21 23:44:44 C 03 29 24.86 +02 52 44.6 r 557
2003-11-22 00:14:24 C 03 29 33.51 +02 55 31.0 r 557
2003-11-22 00:43:50 C 03 29 42.147 +02 58 15.75 X 557
2003-11-22 00:44:40 C 03 29 42.40 +02 58 20.5 r 557
2003-11-22 01:14:55 C 03 29 51.32 +03 01 09.4 r 557
2003-11-22 01:44:17 C 03 30 00.04 +03 03 53.2 r 557
2003-11-22 02:41:13 C 03 30 28.64 +03 09 40.3 c H41
2003-11-22 02:43:48 C 03 30 29.38 +03 09 54.5 c H41
2003-11-22 02:47:30 C 03 30 30.45 +03 10 15.3 c H41
2003-11-22 02:58:19 C 03 30 33.59 +03 11 16.0 c H41
2003-11-22 03:01:33 C 03 30 34.52 +03 11 33.8 c H41
2003-11-22 03:03:28 C 03 30 35.06 +03 11 44.7 c H41
2003-11-22 12:37:50 C 03 33 32.02 +04 04 19.4 m 379
2003-11-22 12:39:29 C 03 33 32.49 +04 04 28.6 m 379
2003-11-22 12:41:09 C 03 33 32.92 +04 04 37.1 m 379
2003-11-22 12:42:47 C 03 33 33.40 +04 04 46.6 m 379
2003-11-22 12:44:27 C 03 33 33.83 +04 04 55.1 m 379
2003-11-22 12:47:45 C 03 33 34.76 +04 05 13.3 m 379
2003-11-22 21:49:03 C 03 36 18.33 +04 53 11.4 r 620
2003-11-22 21:52:48 C 03 36 19.33 +04 53 31.1 r 620
2003-11-22 21:56:32 C 03 36 20.35 +04 53 50.9 r 620
2003-11-22 22:04:27 C 03 36 22.44 +04 54 32.6 r 620
2003-11-22 22:07:20 C 03 36 23.22 +04 54 47.8 r 620
2003-11-22 22:10:11 C 03 36 23.99 +04 55 03.0 r 620
2003-11-23 00:47:47 C 03 37 05.82 +05 08 48.4 r 620
2003-11-23 00:51:33 C 03 37 06.81 +05 09 07.8 r 620
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)