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
2017-01-30 14:17:16 C 13 19 10.739 -03 12 04.54 V F51
2017-01-30 14:34:42 C 13 19 10.889 -03 12 03.97 V F51
2017-01-30 14:52:05 C 13 19 11.030 -03 12 03.51 V F51
2017-02-22 13:55:14 C 13 14 34.494 -01 56 14.30 V F51
2017-02-22 14:11:22 C 13 14 34.013 -01 56 10.36 V F51
2017-02-22 14:26:32 C 13 14 33.571 -01 56 06.72 V F51
2017-02-22 14:41:43 C 13 14 33.123 -01 56 02.97 V F51
2017-02-25 00:31:00 C 13 12 51.234 -01 41 20.82 X Z18
2017-02-25 00:34:24 C 13 12 51.119 -01 41 19.87 X Z18
2017-02-25 01:08:22 C 13 12 50.007 -01 41 10.94 X Z18
2017-02-25 01:32:08 C 13 12 49.224 -01 41 04.67 X Z18
2017-02-25 01:35:32 C 13 12 49.114 -01 41 03.79 X Z18
2017-02-25 01:42:20 C 13 12 48.886 -01 41 01.96 X Z18
2017-02-25 01:49:07 C 13 12 48.661 -01 41 00.15 X Z18
2017-02-25 01:55:55 C 13 12 48.439 -01 40 58.39 X Z18
2017-02-25 02:12:54 C 13 12 47.876 -01 40 53.92 X Z18
2017-02-25 02:26:29 C 13 12 47.426 -01 40 50.34 X Z18
2017-02-25 02:53:43 C 13 12 46.515 -01 40 43.08 X Z18
2017-02-25 02:57:07 C 13 12 46.403 -01 40 42.20 X Z18
2017-02-25 03:00:31 C 13 12 46.287 -01 40 41.26 X Z18
2017-02-25 03:03:54 C 13 12 46.175 -01 40 40.38 X Z18
2017-02-25 03:07:18 C 13 12 46.060 -01 40 39.46 X Z18
2017-02-25 03:10:41 C 13 12 45.947 -01 40 38.57 X Z18
2017-02-25 03:27:39 C 13 12 45.378 -01 40 34.10 X Z18
2017-02-25 03:31:03 C 13 12 45.264 -01 40 33.20 X Z18
2017-02-25 03:51:25 C 13 12 44.579 -01 40 27.76 X Z18
2017-02-25 03:54:49 C 13 12 44.464 -01 40 26.85 X Z18
2017-02-25 03:58:13 C 13 12 44.349 -01 40 25.93 X Z18
2017-02-25 04:11:48 C 13 12 43.895 -01 40 22.31 X Z18
2017-02-25 04:15:12 C 13 12 43.777 -01 40 21.46 X Z18
2017-02-25 04:18:36 C 13 12 43.664 -01 40 20.55 X Z18
2017-02-25 04:22:00 C 13 12 43.550 -01 40 19.62 X Z18
2017-02-25 04:25:23 C 13 12 43.438 -01 40 18.72 X Z18
2017-02-25 04:49:10 C 13 12 42.639 -01 40 12.42 X Z18
2017-02-25 05:09:32 C 13 12 41.954 -01 40 07.05 X Z18
2017-02-25 05:12:56 C 13 12 41.841 -01 40 06.10 X Z18
2017-02-25 05:16:19 C 13 12 41.727 -01 40 05.25 X Z18
2017-02-25 05:19:44 C 13 12 41.612 -01 40 04.30 X Z18
2017-02-25 05:29:56 C 13 12 41.266 -01 40 01.57 X Z18
2017-02-25 05:40:07 C 13 12 40.928 -01 39 58.88 X Z18
2017-03-05 12:25:21 C 13 05 04.128 -00 40 48.81 V F51
2017-03-05 13:02:00 C 13 05 02.428 -00 40 36.88 V F51
2017-03-05 13:20:21 C 13 05 01.574 -00 40 30.92 V F51
2017-03-09 09:50:16 C 13 00 40.83 -00 09 28.7 q G96
2017-03-09 10:07:21 C 13 00 39.90 -00 09 22.3 q G96
2017-03-09 10:17:21 C 13 00 39.38 -00 09 18.2 q G96
2017-03-09 10:31:09 C 13 00 38.72 -00 09 13.1 q G96
2017-03-18 10:14:41 C 12 49 00.16 +01 08 11.9 q G96
2017-03-18 10:31:46 C 12 48 59.15 +01 08 18.0 q G96
2017-03-18 10:40:26 C 12 48 58.64 +01 08 21.6 q G96
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)