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
2023-02-09 18:52:02 C 07 11 32.090 +30 06 53.00 q 246
2023-02-09 18:52:22 C 07 11 32.120 +30 06 53.00 q 246
2023-02-09 18:52:41 C 07 11 32.110 +30 06 53.20 q 246
2023-02-09 18:53:01 C 07 11 32.110 +30 06 52.90 q 246
2023-02-09 18:53:20 C 07 11 32.090 +30 06 52.70 q 246
2023-02-10 18:26:13 C 07 11 49.17 +30 03 06.0 X C95
2023-02-10 18:51:53 C 07 11 49.40 +30 03 02.1 X C95
2023-02-10 19:16:36 C 07 11 49.66 +30 02 58.4 X C95
2023-02-11 20:25:48 C 07 12 10.39 +29 58 49.8 X C95
2023-02-11 20:55:36 C 07 12 10.73 +29 58 45.1 X C95
2023-02-11 21:24:31 C 07 12 11.04 +29 58 40.3 X C95
2023-02-11 21:53:32 C 07 12 11.36 +29 58 35.3 X C95
2023-02-12 02:22:30 C 07 12 16.270 +29 57 51.60 V V00
2023-02-12 02:24:47 C 07 12 16.300 +29 57 51.30 V V00
2023-02-12 02:27:05 C 07 12 16.320 +29 57 50.90 V V00
2023-02-12 02:29:22 C 07 12 16.350 +29 57 50.60 V V00
2023-02-12 20:20:27 C 07 12 32.887 +29 55 05.23 V M22
2023-02-12 20:25:00 C 07 12 32.938 +29 55 03.61 V M22
2023-02-12 20:34:05 C 07 12 33.067 +29 55 03.11 V M22
2023-02-12 20:48:26 C 07 12 33.228 +29 54 59.36 V M22
2023-02-12 20:55:34 C 07 12 33.319 +29 54 58.25 V M22
2023-02-12 21:00:06 C 07 12 33.338 +29 54 57.06 V M22
2023-02-12 21:09:57 C 07 12 33.473 +29 54 55.08 V M22
2023-02-12 21:24:21 C 07 12 33.665 +29 54 53.42 V M22
2023-02-12 21:41:50 C 07 12 34.18 +29 54 33.4 18.8 q 122
2023-02-12 22:06:38 C 07 12 34.50 +29 54 28.9 18.9 q 122
2023-02-12 22:33:03 C 07 12 34.84 +29 54 24.3 18.7 q 122
2023-02-13 21:40:07 C 07 12 59.71 +29 50 24.1 19.0 q 122
2023-02-13 22:04:03 C 07 13 00.10 +29 50 20.0 18.9 q 122
2023-02-13 22:29:40 C 07 13 00.49 +29 50 15.3 18.9 q 122
2023-02-14 02:38:11 C 07 13 05.278 +29 49 47.93 V W68
2023-02-14 02:43:23 C 07 13 05.472 +29 49 47.14 V W68
2023-02-14 02:51:11 C 07 13 05.458 +29 49 46.34 V W68
2023-02-14 03:05:28 C 07 13 05.671 +29 49 43.18 V W68
2023-02-14 18:52:39 C 07 13 24.889 +29 46 36.81 X B72
2023-02-14 18:59:58 C 07 13 25.015 +29 46 35.58 X B72
2023-02-14 19:06:46 C 07 13 25.140 +29 46 34.48 X B72
2023-02-15 15:27:04 C 07 13 50.89 +29 43 01.6 Z C97
2023-02-15 15:48:36 C 07 13 51.27 +29 42 58.0 Z C97
2023-02-15 16:10:12 C 07 13 51.64 +29 42 54.3 Z C97
2023-02-17 10:43:40 C 07 14 50.875 +29 35 00.95 q Q21
2023-02-17 10:58:47 C 07 14 51.144 +29 34 57.67 q Q21
2023-02-21 18:36:03 C 07 17 46.143 +29 14 52.97 X B72
2023-02-21 18:40:08 C 07 17 46.292 +29 14 51.78 X B72
2023-02-21 18:44:13 C 07 17 46.393 +29 14 51.15 X B72
2023-02-23 11:18:16 C 07 19 05.80 +29 06 44.3 q Q11
2023-02-23 11:27:29 C 07 19 06.08 +29 06 42.1 q Q11
2023-02-23 11:37:13 C 07 19 06.38 +29 06 40.2 q Q11
2023-02-25 18:32:05 B 07 21 03.538 +28 55 15.24 X B72
2023-02-25 18:36:20 B 07 21 03.673 +28 55 14.44 X B72
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)