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
2002-01-10 03:22:47 C 10 53 03.75 +14 14 41.1 c 621
2002-01-10 03:36:59 C 10 53 03.31 +14 14 46.9 c 621
2002-01-11 08:25:01 C 10 52 14.70 +14 26 16.5 19.1 c 704
2002-01-11 08:46:45 C 10 52 14.04 +14 26 25.1 19.2 c 704
2002-01-11 09:08:30 C 10 52 13.26 +14 26 33.7 19.4 c 704
2002-01-11 09:30:15 C 10 52 12.51 +14 26 42.9 19.4 c 704
2002-01-12 06:09:45 C 10 51 34.13 +14 35 09.2 19.4 c 704
2002-01-12 06:32:03 C 10 51 33.37 +14 35 18.3 19.7 c 704
2002-01-12 06:54:24 C 10 51 32.60 +14 35 28.8 19.6 c 704
2002-01-13 08:57:44 C 10 50 39.09 +14 46 29.4 18.8 c 704
2002-01-13 09:21:38 C 10 50 38.17 +14 46 39.7 19.1 c 704
2002-01-13 09:46:21 C 10 50 37.15 +14 46 50.2 18.5 c 704
2002-01-13 10:32:36 C 10 50 35.37 +14 47 09.1 18.8 c 704
2002-01-14 10:31:16 C 10 49 43.23 +14 57 35.0 19.9 c 608
2002-01-14 10:46:38 C 10 49 42.60 +14 57 41.7 19.5 c 608
2002-01-14 11:02:08 C 10 49 41.96 +14 57 48.8 19.7 c 608
2002-01-22 11:07:58 C 10 40 29.60 +16 28 27.9 19.3 c 644
2002-01-22 11:22:57 C 10 40 28.68 +16 28 34.9 19.0 c 644
2002-01-22 11:37:48 C 10 40 27.77 +16 28 42.4 19.2 c 644
2002-02-03 12:14:53 C 10 21 07.64 +18 51 40.2 18.4 c 644
2002-02-03 12:29:47 C 10 21 06.49 +18 51 47.1 18.9 c 644
2002-02-03 12:44:42 C 10 21 05.35 +18 51 54.0 18.6 c 644
2002-02-04 08:51:14 C 10 19 36.03 +19 01 18.9 c 699
2002-02-04 09:31:44 C 10 19 32.82 +19 01 37.7 c 699
2002-02-04 10:12:17 C 10 19 29.61 +19 01 57.0 c 699
2002-02-04 10:52:55 C 10 19 26.49 +19 02 15.3 c 699
2002-02-04 11:51:20 C 10 19 22.00 +19 02 42.9 18.9 c 644
2002-02-04 12:06:13 C 10 19 20.87 +19 02 50.0 19.5 c 644
2002-02-04 12:21:18 C 10 19 19.69 +19 02 56.5 19.2 c 644
2002-02-06 13:33:50 C 10 15 36.89 +19 25 20.0 19.8 c 608
2002-02-06 13:49:09 C 10 15 35.65 +19 25 26.8 19.5 c 608
2002-02-06 14:04:22 C 10 15 34.44 +19 25 33.1 20.4 c 608
2002-02-08 09:01:15 C 10 12 18.88 +19 44 10.2 18.5 c 704
2002-02-08 09:22:39 C 10 12 17.13 +19 44 19.2 19.2 c 704
2002-02-08 09:43:18 C 10 12 15.45 +19 44 28.2 18.8 c 704
2002-02-08 10:03:56 C 10 12 13.87 +19 44 37.0 18.9 c 704
2002-02-08 10:24:33 C 10 12 12.22 +19 44 45.9 19.0 c 704
2002-02-12 07:42:18 C 10 05 08.10 +20 22 02.0 18.7 c 704
2002-02-12 08:03:40 C 10 05 06.40 +20 22 09.7 18.8 c 704
2002-02-12 08:25:16 C 10 05 04.70 +20 22 17.6 19.0 c 704
2002-02-12 08:46:01 C 10 05 03.09 +20 22 25.9 18.7 c 704
2002-02-12 09:07:18 C 10 05 01.43 +20 22 31.9 19.7 c 704
2002-02-13 07:31:54 C 10 03 21.25 +20 30 46.1 19.3 c 704
2002-02-13 07:56:13 C 10 03 19.23 +20 30 54.3 19.7 c 704
2002-02-13 08:21:02 C 10 03 17.25 +20 31 03.4 19.6 c 704
2002-02-13 08:42:26 C 10 03 15.64 +20 31 11.0 18.9 c 704
2002-02-13 09:03:57 C 10 03 13.92 +20 31 17.6 18.9 c 704
2002-02-14 06:23:23 C 10 01 39.75 +20 38 46.6 19.6 c 704
2002-02-14 06:44:27 C 10 01 37.97 +20 38 55.6 19.8 c 704
2002-02-14 07:05:28 C 10 01 36.48 +20 39 01.7 19.2 c 704
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)