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
2022-10-02 03:45:30 C 04 25 08.41 -28 52 26.7 V I88
2022-10-02 03:46:15 C 04 25 08.73 -28 52 24.4 V I88
2022-10-02 07:16:28 C 04 26 52.313 -28 40 31.98 V W68
2022-10-02 07:19:04 C 04 26 53.482 -28 40 24.74 V W68
2022-10-02 07:23:36 C 04 26 55.517 -28 40 12.14 V W68
2022-10-02 07:40:27 C 04 27 03.079 -28 39 25.06 V W68
2022-10-02 18:11:33 C 04 32 06.12 -28 10 53.8 V P87
2022-10-02 18:20:26 C 04 32 10.08 -28 10 28.1 V P87
2022-10-02 18:28:43 C 04 32 13.76 -28 10 03.4 V P87
2022-10-03 01:06:29 C 04 35 24.922 -27 48 25.96 V M22
2022-10-03 01:10:23 C 04 35 26.652 -27 48 14.62 V M22
2022-10-03 01:17:53 C 04 35 29.974 -27 47 52.69 V M22
2022-10-03 01:21:56 C 04 35 33.550 -27 49 39.61 Z 213
2022-10-03 01:25:19 C 04 35 33.252 -27 47 30.91 V M22
2022-10-03 01:37:30 C 04 35 40.538 -27 48 54.58 Z 213
2022-10-03 01:52:20 C 04 35 47.189 -27 48 11.56 Z 213
2022-10-03 02:55:12 C 04 36 14.40 -27 45 11.2 V 204
2022-10-03 03:04:21 C 04 36 18.49 -27 44 43.6 V 204
2022-10-03 03:13:30 C 04 36 22.58 -27 44 16.3 V 204
2022-10-03 03:22:40 C 04 36 26.66 -27 43 48.5 V 204
2022-10-03 03:30:18 C 04 36 30.07 -27 43 25.6 V 204
2022-10-03 09:27:02 C 04 39 22.43 -27 25 10.0 U V16
2022-10-03 09:31:12 C 04 39 24.22 -27 24 57.0 U V16
2022-10-03 09:35:57 C 04 39 26.36 -27 24 43.8 U V16
2022-10-03 09:40:07 C 04 39 28.19 -27 24 31.5 U V16
2022-10-03 09:44:35 C 04 39 30.14 -27 24 17.9 U V16
2022-10-03 09:49:03 C 04 39 32.10 -27 24 04.5 U V16
2022-10-03 09:52:02 C 04 39 33.38 -27 23 55.2 U V16
2022-10-03 09:57:59 C 04 39 36.00 -27 23 37.7 U V16
2022-10-03 10:00:04 C 04 39 36.95 -27 23 31.5 U V16
2022-10-03 10:02:27 C 04 39 37.96 -27 23 24.7 U V16
2022-10-03 23:57:18 C 04 46 10.831 -26 38 09.71 V M22
2022-10-03 23:59:54 C 04 46 11.969 -26 38 01.93 V M22
2022-10-04 00:11:58 C 04 46 17.242 -26 37 25.32 V M22
2022-10-04 00:20:30 C 04 46 20.969 -26 36 59.44 V M22
2022-10-04 09:11:38 C 04 50 25.32 -26 10 51.5 V H06
2022-10-04 09:21:16 C 04 50 29.45 -26 10 21.6 V H06
2022-10-04 09:30:56 C 04 50 33.61 -26 09 51.3 V H06
2022-10-05 01:18:41 C 04 57 42.100 -25 18 40.79 q 095
2022-10-05 01:33:12 C 04 57 48.217 -25 17 53.13 q 095
2022-10-05 01:44:23 C 04 57 54.02 -25 17 13.3 o 071
2022-10-05 01:45:14 C 04 57 54.38 -25 17 10.6 o 071
2022-10-05 01:46:04 C 04 57 54.70 -25 17 08.3 o 071
2022-10-05 01:46:54 C 04 57 55.06 -25 17 05.3 o 071
2022-10-05 01:47:42 C 04 57 55.41 -25 17 02.9 o 071
2022-10-05 01:47:43 C 04 57 54.326 -25 17 05.47 q 095
2022-10-05 01:48:32 C 04 57 55.62 -25 16 57.5 o 071
2022-10-05 01:49:22 C 04 57 56.13 -25 16 57.1 o 071
2022-10-05 01:50:12 C 04 57 56.46 -25 16 54.5 o 071
2022-10-05 01:51:02 C 04 57 56.84 -25 16 51.9 o 071
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)