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
2019-02-04 13:41:26 C 12 26 09.698 +03 45 14.99 V F52
2019-02-04 13:42:21 C 12 26 09.678 +03 45 15.33 U F52
2019-02-05 22:52:50 C 12 25 23.69 +03 54 07.9 U B18
2019-02-05 22:53:54 C 12 25 23.66 +03 54 08.1 U B18
2019-02-05 22:54:58 C 12 25 23.64 +03 54 08.4 U B18
2019-02-05 22:56:02 C 12 25 23.61 +03 54 08.7 U B18
2019-02-05 22:57:06 C 12 25 23.58 +03 54 09.0 U B18
2019-02-05 22:59:15 C 12 25 23.53 +03 54 09.5 U B18
2019-02-05 23:00:19 C 12 25 23.49 +03 54 10.0 U B18
2019-02-05 23:01:25 C 12 25 23.46 +03 54 10.2 U B18
2019-02-05 23:02:29 C 12 25 23.44 +03 54 10.5 U B18
2019-02-06 00:37:43 C 12 25 20.92 +03 54 37.0 U B18
2019-02-06 00:38:49 C 12 25 20.90 +03 54 37.2 U B18
2019-02-06 00:39:55 C 12 25 20.87 +03 54 37.6 U B18
2019-02-06 00:40:59 C 12 25 20.84 +03 54 37.8 U B18
2019-02-06 00:42:04 C 12 25 20.81 +03 54 38.1 U B18
2019-02-06 00:43:11 C 12 25 20.78 +03 54 38.4 U B18
2019-02-06 00:44:15 C 12 25 20.75 +03 54 38.7 U B18
2019-02-06 00:45:20 C 12 25 20.73 +03 54 39.1 U B18
2019-02-06 00:46:27 C 12 25 20.70 +03 54 39.3 U B18
2019-02-06 00:47:32 C 12 25 20.67 +03 54 39.6 U B18
2019-02-07 01:25:17 C 12 24 43.15 +04 01 39.4 q G40
2019-02-07 01:45:11 C 12 24 42.59 +04 01 45.2 q G40
2019-02-07 02:05:11 C 12 24 41.99 +04 01 51.0 q G40
2019-02-12 08:24:56 C 12 20 42.105 +04 41 32.38 V G96
2019-02-12 08:32:58 C 12 20 41.774 +04 41 35.22 V G96
2019-02-12 08:41:01 C 12 20 41.502 +04 41 37.90 V G96
2019-02-12 08:49:04 C 12 20 41.156 +04 41 40.88 V G96
2019-02-28 10:29:49 C 12 01 41.688 +07 12 01.68 V G96
2019-02-28 10:37:55 C 12 01 41.205 +07 12 04.90 V G96
2019-02-28 10:46:02 C 12 01 40.694 +07 12 08.21 V G96
2019-02-28 10:54:10 C 12 01 40.213 +07 12 11.52 V G96
2019-03-03 17:55:59 C 11 56 51.14 +07 45 12.3 q D29
2019-03-03 18:16:21 C 11 56 49.81 +07 45 20.6 q D29
2019-03-03 18:36:43 C 11 56 48.48 +07 45 28.1 q D29
2019-03-05 08:17:30 C 11 54 27.03 +08 01 05.3 V 703
2019-03-05 08:34:20 C 11 54 25.85 +08 01 12.3 V 703
2019-03-05 08:41:51 C 11 54 25.35 +08 01 13.3 V 703
2019-03-05 08:49:20 C 11 54 24.77 +08 01 17.2 V 703
2019-03-06 17:08:38 C 11 52 21.88 +08 14 32.9 q D29
2019-03-06 17:29:00 C 11 52 20.51 +08 14 41.6 q D29
2019-03-06 17:49:22 C 11 52 19.19 +08 14 49.1 q D29
2019-03-09 00:25:58 C 11 48 49.38 +08 36 46.0 V C95
2019-03-09 00:34:33 C 11 48 48.82 +08 36 48.9 V C95
2019-03-09 00:43:08 C 11 48 48.21 +08 36 52.8 V C95
2019-03-26 14:45:46 C 11 23 06.42 +10 54 18.5 q D29
2019-03-26 15:06:08 C 11 23 05.31 +10 54 22.5 q D29
2019-03-26 15:26:29 C 11 23 04.18 +10 54 28.1 q D29
2019-04-02 06:43:30 C 11 15 16.053 +11 25 45.13 V F51
2019-04-02 07:00:32 C 11 15 15.281 +11 25 47.93 V F51
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)