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
2022-10-12 05:43:50 C 06 05 37.51 -15 10 09.6 q X03
2022-10-12 05:50:16 C 06 05 39.55 -15 09 47.7 q X03
2022-10-12 05:56:43 C 06 05 41.59 -15 09 25.6 q X03
2022-10-12 10:32:00 C 06 07 10.36 -14 55 24.0 U V16
2022-10-12 10:36:28 C 06 07 11.70 -14 55 08.2 U V16
2022-10-12 10:40:56 C 06 07 13.08 -14 54 53.0 U V16
2022-10-12 10:45:24 C 06 07 14.45 -14 54 37.7 U V16
2022-10-12 10:49:51 C 06 07 15.79 -14 54 22.1 U V16
2022-10-12 10:54:19 C 06 07 17.13 -14 54 06.6 U V16
2022-10-12 10:58:47 C 06 07 18.48 -14 53 51.1 U V16
2022-10-12 11:03:15 C 06 07 19.84 -14 53 35.6 U V16
2022-10-13 01:47:08 C 06 12 10.34 -14 02 26.3 v A77
2022-10-13 01:54:28 C 06 12 12.55 -14 02 01.7 v A77
2022-10-13 02:03:40 C 06 12 15.32 -14 01 30.0 v A77
2022-10-13 02:11:07 C 06 12 17.57 -14 01 04.5 v A77
2022-10-14 02:13:13 C 06 19 47.065 -12 38 47.70 V 089
2022-10-14 02:16:05 C 06 19 47.868 -12 38 38.06 V 089
2022-10-14 02:18:57 C 06 19 48.709 -12 38 27.70 V 089
2022-10-14 02:21:49 C 06 19 49.494 -12 38 18.66 V 089
2022-10-14 02:24:41 C 06 19 50.294 -12 38 08.52 V 089
2022-10-14 02:27:33 C 06 19 51.072 -12 37 58.71 V 089
2022-10-14 04:17:15 C 06 20 25.82 -12 31 36.4 V Z10
2022-10-14 04:27:27 C 06 20 28.65 -12 31 02.3 V Z10
2022-10-14 04:38:46 C 06 20 31.80 -12 30 24.1 V Z10
2022-10-15 00:48:05 C 06 26 35.18 -11 22 50.7 V L85
2022-10-15 01:43:55 C 06 26 50.29 -11 19 46.8 V L85
2022-10-15 02:38:37 C 06 27 03.365 -11 16 56.82 V 089
2022-10-15 02:41:05 C 06 27 06.47 -11 16 43.2 X C95
2022-10-15 02:41:29 C 06 27 04.128 -11 16 47.05 V 089
2022-10-15 02:44:21 C 06 27 04.902 -11 16 37.33 V 089
2022-10-15 02:47:13 C 06 27 05.692 -11 16 27.82 V 089
2022-10-15 02:48:39 C 06 27 08.51 -11 16 18.3 X C95
2022-10-15 02:52:57 C 06 27 07.254 -11 16 09.02 V 089
2022-10-15 02:55:49 C 06 27 07.987 -11 15 59.22 V 089
2022-10-15 02:56:12 C 06 27 10.55 -11 15 53.6 X C95
2022-10-15 02:58:41 C 06 27 08.765 -11 15 50.09 V 089
2022-10-15 03:03:46 C 06 27 12.57 -11 15 28.8 X C95
2022-10-15 03:11:22 C 06 27 14.61 -11 15 03.9 X C95
2022-10-15 03:18:59 C 06 27 16.64 -11 14 38.9 X C95
2022-10-15 03:26:36 C 06 27 18.69 -11 14 13.8 X C95
2022-10-15 03:34:10 C 06 27 20.71 -11 13 49.0 X C95
2022-10-15 03:41:44 C 06 27 22.74 -11 13 24.2 X C95
2022-10-15 03:49:19 C 06 27 24.75 -11 12 59.3 X C95
2022-10-15 07:03:31 S 06 28 24.995 -11 02 04.64 X 275
2022-10-15 07:06:02 C 06 28 24.425 -10 59 55.18 V W88
2022-10-15 07:11:55 C 06 28 25.994 -10 59 35.84 V W88
2022-10-15 07:17:34 C 06 28 27.492 -10 59 17.70 V W88
2022-10-15 07:23:30 C 06 28 29.050 -10 58 58.48 V W88
2022-10-15 08:54:44 V 06 28 54.25 -10 55 59.0 V 270
2022-10-15 08:54:44 v 1 276.64246 +33.90559 270
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)