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
2022-10-21 09:34:37 C 07 04 37.843 -03 43 14.20 Z H06
2022-10-21 09:43:11 C 07 04 39.490 -03 42 51.26 Z H06
2022-10-21 09:51:07 C 07 04 40.999 -03 42 30.06 Z H06
2022-10-21 11:19:03 C 07 04 57.88 -03 38 34.0 U V16
2022-10-21 11:23:37 C 07 04 58.77 -03 38 21.5 U V16
2022-10-21 11:28:11 C 07 04 59.59 -03 38 09.5 U V16
2022-10-21 11:32:48 C 07 05 00.44 -03 37 57.0 U V16
2022-10-21 11:35:38 S 07 05 01.423 -03 37 55.77 X 275
2022-10-21 11:37:22 C 07 05 01.28 -03 37 45.1 U V16
2022-10-21 11:41:56 C 07 05 02.15 -03 37 32.6 U V16
2022-10-21 11:46:30 C 07 05 02.98 -03 37 20.5 U V16
2022-10-21 11:51:04 C 07 05 03.84 -03 37 08.2 U V16
2022-10-22 02:41:08 C 07 08 08.58 -02 58 05.5 V C82
2022-10-22 02:58:52 C 07 08 11.83 -02 57 19.4 V C82
2022-10-22 03:16:14 C 07 08 15.00 -02 56 34.1 V C82
2022-10-22 07:45:17 C 07 09 11.08 -02 44 53.1 X W62
2022-10-22 07:48:55 C 07 09 11.74 -02 44 43.8 X W62
2022-10-22 07:52:30 C 07 09 12.39 -02 44 34.5 X W62
2022-10-23 04:09:12 C 07 13 09.082 -01 53 02.62 X K87
2022-10-23 04:12:00 C 07 13 09.578 -01 52 55.74 X K87
2022-10-23 04:14:50 C 07 13 10.063 -01 52 48.83 X K87
2022-10-23 07:07:25 C 07 13 46.447 -01 43 36.95 V W68
2022-10-23 07:11:57 C 07 13 47.244 -01 43 25.61 V W68
2022-10-23 07:20:25 C 07 13 48.706 -01 43 04.55 V W68
2022-10-23 07:46:22 C 07 13 53.158 -01 41 59.96 V W68
2022-10-23 10:21:40 C 07 14 23.208 -01 37 16.72 Z U69
2022-10-23 10:28:13 C 07 14 24.341 -01 37 00.77 Z U69
2022-10-23 10:34:45 C 07 14 25.478 -01 36 44.64 Z U69
2022-10-24 09:53:44 V 07 18 42.33 -00 39 50.7 V 270
2022-10-24 09:53:44 v 1 276.64247 +33.90559 270
2022-10-24 10:03:16 V 07 18 43.92 -00 39 27.8 V 270
2022-10-24 10:03:16 v 1 276.64247 +33.90559 270
2022-10-24 10:12:24 V 07 18 45.34 -00 39 05.9 V 270
2022-10-24 10:12:24 v 1 276.64247 +33.90559 270
2022-10-24 10:21:56 V 07 18 46.81 -00 38 43.3 V 270
2022-10-24 10:21:56 v 1 276.64247 +33.90559 270
2022-10-24 14:39:31 C 07 19 33.941 -00 28 11.53 V T05
2022-10-24 15:21:43 C 07 19 40.445 -00 26 31.45 V T05
2022-10-25 02:04:02 C 07 21 35.659 -00 00 01.30 V M22
2022-10-25 02:12:53 C 07 21 36.998 +00 00 19.48 V M22
2022-10-25 02:16:51 C 07 21 37.618 +00 00 28.37 V M22
2022-10-25 02:39:26 C 07 21 41.078 +00 01 21.00 V M22
2022-10-26 03:04:34 C 07 25 50.17 +00 55 14.9 X C95
2022-10-26 03:10:35 C 07 25 51.05 +00 55 28.4 X C95
2022-10-26 03:16:35 C 07 25 51.95 +00 55 41.8 X C95
2022-10-26 03:21:51 C 07 25 52.74 +00 55 53.5 X C95
2022-10-26 03:26:22 C 07 25 53.40 +00 56 03.8 X C95
2022-10-26 03:30:52 C 07 25 54.07 +00 56 13.7 X C95
2022-10-26 03:35:22 C 07 25 54.73 +00 56 23.8 X C95
2022-10-26 03:39:54 C 07 25 55.40 +00 56 34.0 X C95
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)