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
2022-12-17 21:13:47 C 08 07 41.80 +26 12 38.6 v A77
2022-12-17 23:21:17 C 08 07 32.90 +26 14 14.2 q G23
2022-12-17 23:35:38 C 08 07 31.92 +26 14 24.8 q G23
2022-12-18 04:42:24 C 08 07 11.05 +26 17 59.0 V C23
2022-12-18 04:46:34 C 08 07 10.78 +26 18 01.7 V C23
2022-12-18 04:50:44 C 08 07 10.47 +26 18 04.5 V C23
2022-12-18 18:25:42 C 08 06 22.58 +26 27 44.5 Y N42
2022-12-18 18:28:03 C 08 06 22.43 +26 27 46.1 Y N42
2022-12-18 18:30:23 C 08 06 22.26 +26 27 47.9 Y N42
2022-12-18 18:32:43 C 08 06 22.10 +26 27 49.6 Y N42
2022-12-18 18:35:04 C 08 06 21.92 +26 27 51.4 Y N42
2022-12-18 19:05:32 C 08 06 19.78 +26 28 13.6 Y N42
2022-12-18 19:10:14 C 08 06 19.45 +26 28 17.1 Y N42
2022-12-18 19:12:34 C 08 06 19.29 +26 28 18.7 Y N42
2022-12-19 05:02:42 C 08 05 39.20 +26 35 04.5 X L63
2022-12-19 05:17:05 C 08 05 38.19 +26 35 14.2 X L63
2022-12-19 05:30:55 C 08 05 37.27 +26 35 23.1 X L63
2022-12-19 09:31:01 C 08 05 23.892 +26 38 22.45 V 703
2022-12-19 09:38:37 C 08 05 23.330 +26 38 27.53 V 703
2022-12-19 09:46:14 C 08 05 22.758 +26 38 32.86 V 703
2022-12-19 09:53:50 C 08 05 22.110 +26 38 39.23 V 703
2022-12-19 10:31:06 S 08 05 18.268 +26 38 58.81 X 275
2022-12-19 16:09:59 C 08 05 00.31 +26 42 39.0 Y N42
2022-12-19 16:11:52 C 08 05 00.18 +26 42 40.3 Y N42
2022-12-19 16:13:45 C 08 05 00.06 +26 42 41.6 Y N42
2022-12-19 16:15:37 C 08 04 59.94 +26 42 43.0 Y N42
2022-12-19 16:17:30 C 08 04 59.80 +26 42 44.4 Y N42
2022-12-19 16:19:23 C 08 04 59.69 +26 42 45.9 Y N42
2022-12-19 16:21:16 C 08 04 59.55 +26 42 47.2 Y N42
2022-12-19 16:23:08 C 08 04 59.43 +26 42 48.7 Y N42
2022-12-19 16:25:01 C 08 04 59.30 +26 42 49.9 Y N42
2022-12-19 16:26:55 C 08 04 59.16 +26 42 51.4 Y N42
2022-12-19 16:28:48 C 08 04 59.04 +26 42 52.8 Y N42
2022-12-19 16:30:40 C 08 04 58.91 +26 42 54.2 Y N42
2022-12-19 16:32:32 C 08 04 58.79 +26 42 55.8 Y N42
2022-12-19 16:34:26 C 08 04 58.66 +26 42 57.0 Y N42
2022-12-19 16:36:19 C 08 04 58.53 +26 42 58.2 Y N42
2022-12-19 16:38:12 C 08 04 58.41 +26 42 59.7 Y N42
2022-12-19 16:40:06 C 08 04 58.28 +26 43 01.1 Y N42
2022-12-19 16:41:59 C 08 04 58.15 +26 43 02.5 Y N42
2022-12-19 16:43:52 C 08 04 58.06 +26 43 03.9 Y N42
2022-12-19 16:45:45 C 08 04 57.89 +26 43 05.4 Y N42
2022-12-21 08:31:44 C 08 02 19.403 +27 09 43.31 V 703
2022-12-21 08:47:09 C 08 02 18.067 +27 09 54.83 V 703
2022-12-21 08:54:53 C 08 02 17.484 +27 09 59.58 V 703
2022-12-21 20:40:38 C 08 01 31.45 +27 17 15.7 X C95
2022-12-21 20:50:22 C 08 01 30.77 +27 17 22.5 X C95
2022-12-21 20:59:12 C 08 01 30.13 +27 17 28.6 X C95
2022-12-23 08:52:09 C 07 58 59.887 +27 39 59.11 V G96
2022-12-23 08:59:38 C 07 58 59.286 +27 40 03.65 V 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)