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
2023-01-20 17:25:03 C 07 17 06.48 +30 50 48.8 V C40
2023-01-20 18:10:23 C 07 17 04.59 +30 50 50.6 V C40
2023-01-21 00:08:59 C 07 16 50.78 +30 50 50.4 q Y98
2023-01-21 01:26:12 C 07 16 47.71 +30 50 49.7 q Y98
2023-01-21 05:52:46 C 07 16 39.212 +30 50 59.03 V 703
2023-01-21 06:01:11 C 07 16 38.831 +30 50 58.96 V 703
2023-01-21 06:09:35 C 07 16 38.500 +30 50 58.99 V 703
2023-01-21 06:17:42 C 07 16 38.186 +30 50 59.06 V 703
2023-01-21 23:29:17 S 07 16 02.844 +30 50 49.06 X 275
2023-01-22 10:16:27 C 07 15 41.640 +30 50 50.71 V T05
2023-01-22 10:21:39 C 07 15 41.436 +30 50 50.57 V T05
2023-01-22 10:54:28 C 07 15 40.154 +30 50 49.67 V T05
2023-01-22 11:08:20 C 07 15 39.631 +30 50 49.13 V T05
2023-01-22 12:56:59 C 07 15 35.530 +30 50 44.48 V T12
2023-01-22 12:57:54 C 07 15 35.499 +30 50 44.45 V T12
2023-01-22 12:58:49 C 07 15 35.464 +30 50 44.38 V T12
2023-01-22 12:59:53 C 07 15 35.426 +30 50 44.35 V T12
2023-01-22 13:00:42 C 07 15 35.395 +30 50 44.28 V T12
2023-01-23 12:46:28 C 07 14 54.437 +30 50 27.13 V P07
2023-01-23 13:39:34 C 07 14 52.579 +30 50 27.13 V P07
2023-01-23 14:34:14 C 07 14 50.626 +30 50 26.09 V P07
2023-01-23 15:43:44 C 07 14 48.134 +30 50 24.47 V P07
2023-01-23 16:40:35 C 07 14 46.138 +30 50 22.60 V P07
2023-01-23 17:21:23 C 07 14 46.36 +30 49 55.7 V C40
2023-01-23 17:27:34 C 07 14 46.17 +30 49 55.8 V C40
2023-01-23 17:33:38 C 07 14 45.96 +30 49 55.9 V C40
2023-01-23 17:59:58 C 07 14 45.13 +30 49 55.2 V C40
2023-01-23 18:58:16 C 07 14 43.17 +30 49 54.6 V C40
2023-01-23 19:05:43 C 07 14 42.89 +30 49 54.6 V C40
2023-01-23 21:31:57 C 07 14 38.78 +30 49 47.2 q Y98
2023-01-23 22:24:53 C 07 14 37.05 +30 49 45.8 q Y98
2023-01-23 23:02:20 C 07 14 35.83 +30 49 44.7 q Y98
2023-01-23 23:52:54 C 07 14 33.950 +30 49 44.47 V B67
2023-01-24 00:04:38 C 07 14 33.564 +30 49 43.75 V B67
2023-01-24 00:16:18 C 07 14 33.185 +30 49 43.36 V B67
2023-01-24 00:27:57 C 07 14 32.815 +30 49 42.64 V B67
2023-01-24 15:28:09 C 07 14 08.90 +30 49 14.9 V D29
2023-01-24 15:51:04 C 07 14 08.15 +30 49 13.7 V D29
2023-01-24 16:13:59 C 07 14 07.40 +30 49 12.6 V D29
2023-01-24 21:40:52 C 07 13 59.40 +30 48 53.4 q G23
2023-01-24 21:55:11 C 07 13 58.94 +30 48 53.1 q G23
2023-01-25 15:43:24 C 07 13 33.83 +30 47 57.1 V C40
2023-01-25 16:06:06 C 07 13 33.21 +30 47 56.7 V C40
2023-01-25 16:28:43 C 07 13 32.64 +30 47 55.9 V C40
2023-01-25 17:37:05 C 07 13 31.18 +30 47 50.8 X C95
2023-01-25 17:57:19 C 07 13 30.66 +30 47 50.3 X C95
2023-01-25 23:25:32 C 07 13 21.72 +30 47 37.3 X K19
2023-01-25 23:30:50 C 07 13 21.54 +30 47 37.1 X K19
2023-01-25 23:36:04 C 07 13 21.40 +30 47 36.6 X K19
2023-01-27 16:23:03 C 07 12 32.08 +30 44 55.8 V C40
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)