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
2022-12-27 22:30:23 C 07 51 08.98 +28 40 11.5 q G23
2022-12-27 22:32:52 C 07 51 09.21 +28 40 13.5 X C95
2022-12-27 22:33:03 C 07 51 08.85 +28 40 11.4 Y 557
2022-12-27 22:34:13 C 07 51 09.13 +28 40 14.1 X K19
2022-12-27 22:38:05 C 07 51 08.79 +28 40 16.2 X C95
2022-12-27 22:49:35 C 07 51 07.48 +28 40 21.0 V M34
2022-12-27 23:34:01 C 07 51 03.98 +28 40 42.7 Y 557
2022-12-28 00:24:12 C 07 51 00.68 +28 41 14.9 V Z45
2022-12-28 00:27:38 C 07 51 00.40 +28 41 16.7 V Z45
2022-12-28 00:29:09 C 07 50 59.57 +28 41 10.3 Y 557
2022-12-28 00:31:03 C 07 51 00.12 +28 41 18.4 V Z45
2022-12-28 00:34:30 C 07 50 59.84 +28 41 20.2 V Z45
2022-12-28 00:37:55 C 07 50 59.55 +28 41 22.0 V Z45
2022-12-28 00:41:22 C 07 50 59.27 +28 41 23.7 V Z45
2022-12-28 00:44:47 C 07 50 59.00 +28 41 25.5 V Z45
2022-12-28 01:33:25 C 07 50 54.41 +28 41 41.5 Y 557
2022-12-28 02:31:20 C 07 50 49.79 +28 42 08.9 Y 557
2022-12-28 03:35:21 C 07 50 44.77 +28 42 38.5 Y 557
2022-12-28 15:57:12 C 07 49 49.811 +28 48 51.23 V T12
2022-12-28 15:57:36 C 07 49 49.779 +28 48 51.41 V T12
2022-12-28 15:58:13 C 07 49 49.732 +28 48 51.69 V T12
2022-12-28 15:58:44 C 07 49 49.697 +28 48 51.89 V T12
2022-12-28 15:59:14 C 07 49 49.653 +28 48 52.09 V T12
2022-12-28 16:00:09 C 07 49 49.580 +28 48 52.50 V T12
2022-12-28 16:00:35 C 07 49 49.550 +28 48 52.65 V T12
2022-12-28 16:01:02 C 07 49 49.512 +28 48 52.93 V T12
2022-12-28 16:01:28 C 07 49 49.481 +28 48 53.04 V T12
2022-12-29 20:05:58 C 07 47 47.83 +29 01 53.2 V D29
2022-12-29 20:26:19 C 07 47 46.21 +29 02 01.5 V D29
2022-12-29 20:46:41 C 07 47 44.60 +29 02 09.7 V D29
2022-12-29 21:37:45 C 07 47 43.89 +29 02 23.7 V C23
2022-12-29 21:48:58 C 07 47 43.03 +29 02 29.2 V C23
2022-12-29 21:59:22 C 07 47 42.25 +29 02 34.2 V C23
2022-12-30 14:53:01 C 07 46 28.89 +29 10 10.7 V D29
2022-12-30 15:18:29 C 07 46 26.83 +29 10 21.5 V D29
2022-12-30 15:43:56 C 07 46 24.78 +29 10 34.2 V D29
2022-12-30 20:41:34 C 07 46 04.05 +29 12 30.0 X K19
2022-12-30 20:46:51 C 07 46 03.64 +29 12 32.5 X K19
2022-12-30 20:52:09 C 07 46 03.21 +29 12 34.9 X K19
2022-12-31 19:16:50 C 07 44 23.65 +29 22 01.2 V D29
2022-12-31 19:42:17 C 07 44 21.62 +29 22 10.6 V D29
2022-12-31 20:07:45 C 07 44 19.62 +29 22 19.8 V D29
2023-01-02 22:28:08 C 07 40 47.49 +29 41 07.8 V C23
2023-01-02 22:32:26 C 07 40 47.13 +29 41 09.6 V C23
2023-01-02 22:36:46 C 07 40 46.83 +29 41 11.1 V C23
2023-01-03 21:53:09 C 07 39 09.56 +29 49 05.2 Y 557
2023-01-03 22:57:10 C 07 39 04.73 +29 49 27.2 Y 557
2023-01-04 00:01:10 C 07 38 59.87 +29 49 48.2 Y 557
2023-01-04 00:12:33 C 07 38 59.573 +29 49 55.16 V Y90
2023-01-04 01:27:27 C 07 38 53.822 +29 50 19.82 V Y90
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)