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
2022-12-15 13:16:43 C 08 10 57.81 +25 31 29.9 V P87
2022-12-15 13:29:41 C 08 10 57.03 +25 31 40.5 V P87
2022-12-15 13:42:37 C 08 10 56.24 +25 31 51.0 V P87
2022-12-15 14:46:25 C 08 10 49.120 +25 32 54.96 U F51
2022-12-15 15:00:48 C 08 10 48.153 +25 33 05.33 U F51
2022-12-15 15:15:09 C 08 10 47.211 +25 33 15.22 U F51
2022-12-15 19:35:36 C 08 10 36.204 +25 36 00.79 X B72
2022-12-15 19:38:51 C 08 10 36.026 +25 36 03.13 X B72
2022-12-15 19:42:05 C 08 10 35.863 +25 36 05.87 X B72
2022-12-15 19:45:20 C 08 10 35.669 +25 36 08.71 X B72
2022-12-15 19:48:34 C 08 10 35.484 +25 36 11.09 X B72
2022-12-15 19:51:49 C 08 10 35.318 +25 36 13.61 X B72
2022-12-15 19:55:04 C 08 10 35.122 +25 36 16.34 X B72
2022-12-15 19:58:18 C 08 10 34.946 +25 36 18.83 X B72
2022-12-15 20:01:33 C 08 10 34.766 +25 36 21.64 X B72
2022-12-15 20:04:48 C 08 10 34.589 +25 36 24.12 X B72
2022-12-15 20:08:02 C 08 10 34.404 +25 36 26.96 X B72
2022-12-15 20:11:17 C 08 10 34.224 +25 36 29.38 X B72
2022-12-15 20:14:31 C 08 10 34.046 +25 36 32.15 X B72
2022-12-15 20:17:46 C 08 10 33.847 +25 36 34.56 X B72
2022-12-15 20:21:00 C 08 10 33.665 +25 36 37.15 X B72
2022-12-15 20:24:15 C 08 10 33.475 +25 36 40.18 X B72
2022-12-15 20:27:29 C 08 10 33.307 +25 36 42.62 X B72
2022-12-15 20:30:44 C 08 10 33.118 +25 36 45.25 X B72
2022-12-15 20:33:59 C 08 10 32.938 +25 36 47.52 X B72
2022-12-15 20:37:13 C 08 10 32.736 +25 36 50.40 X B72
2022-12-15 22:16:19 C 08 10 26.998 +25 38 07.62 V Z80
2022-12-15 22:23:24 C 08 10 26.527 +25 38 13.16 V Z80
2022-12-15 22:30:28 C 08 10 26.086 +25 38 18.85 V Z80
2022-12-15 22:38:15 C 08 10 25.649 +25 38 24.86 V Z80
2022-12-17 02:52:55 C 08 08 45.41 +25 59 30.3 X C95
2022-12-17 02:59:53 C 08 08 44.93 +25 59 35.2 X C95
2022-12-17 03:05:59 C 08 08 44.51 +25 59 39.6 X C95
2022-12-17 03:11:13 C 08 08 44.16 +25 59 43.3 X C95
2022-12-17 03:16:27 C 08 08 43.81 +25 59 47.1 X C95
2022-12-17 10:05:38 C 08 08 19.84 +26 04 53.6 U V16
2022-12-17 10:13:52 C 08 08 19.25 +26 04 59.7 U V16
2022-12-17 10:22:04 C 08 08 18.67 +26 05 05.5 U V16
2022-12-17 10:30:18 C 08 08 18.08 +26 05 11.3 U V16
2022-12-17 10:38:30 C 08 08 17.50 +26 05 17.1 U V16
2022-12-17 10:46:43 C 08 08 16.92 +26 05 23.0 U V16
2022-12-17 10:54:57 C 08 08 16.33 +26 05 28.6 U V16
2022-12-17 11:03:09 C 08 08 15.75 +26 05 34.6 U V16
2022-12-17 11:10:51 C 08 08 15.21 +26 05 39.8 U V16
2022-12-17 17:50:13 S 08 07 51.769 +26 10 26.74 X 275
2022-12-17 20:06:34 C 08 07 42.79 +26 12 04.8 V D29
2022-12-17 20:28:12 C 08 07 41.25 +26 12 19.8 V D29
2022-12-17 20:49:50 C 08 07 39.73 +26 12 34.5 V D29
2022-12-17 20:56:17 C 08 07 42.92 +26 12 25.1 v A77
2022-12-17 21:04:37 C 08 07 42.39 +26 12 31.5 v A77
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)