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
2022-10-19 03:22:35 C 06 52 29.74 -06 15 16.0 X C95
2022-10-19 03:25:50 C 06 52 30.44 -06 15 06.5 X C95
2022-10-19 03:29:05 C 06 52 31.13 -06 14 57.3 X C95
2022-10-19 03:32:20 C 06 52 31.85 -06 14 47.9 X C95
2022-10-19 08:19:57 S 06 53 41.278 -06 00 33.53 X 275
2022-10-19 10:07:26 C 06 54 04.20 -05 55 38.4 V W09
2022-10-19 10:31:44 C 06 54 09.33 -05 54 28.4 V W09
2022-10-19 10:54:59 C 06 54 14.20 -05 53 21.3 V W09
2022-10-19 11:17:52 C 06 54 21.10 -05 52 02.8 U V16
2022-10-19 11:22:34 C 06 54 22.10 -05 51 49.3 U V16
2022-10-19 11:27:16 C 06 54 23.08 -05 51 35.6 U V16
2022-10-19 11:32:00 C 06 54 24.06 -05 51 22.6 U V16
2022-10-19 11:36:43 C 06 54 25.08 -05 51 08.6 U V16
2022-10-19 11:41:26 C 06 54 26.02 -05 50 55.1 U V16
2022-10-19 11:46:09 C 06 54 26.99 -05 50 41.5 U V16
2022-10-19 11:50:52 C 06 54 27.97 -05 50 28.1 U V16
2022-10-19 17:02:14 S 06 55 43.017 -05 35 36.49 X 275
2022-10-19 17:07:14 C 06 55 43.795 -05 35 24.94 q Q21
2022-10-19 17:11:09 C 06 55 44.628 -05 35 14.35 q Q21
2022-10-19 17:14:47 C 06 55 45.420 -05 35 03.23 q Q21
2022-10-20 01:49:48 C 06 57 41.44 -05 10 55.6 q G23
2022-10-20 02:11:35 C 06 57 45.97 -05 09 54.4 q G23
2022-10-20 02:33:29 C 06 57 50.45 -05 08 52.5 q G23
2022-10-20 08:29:49 C 06 59 11.79 -04 52 05.2 V W09
2022-10-20 08:42:24 C 06 59 13.27 -04 49 34.8 Z X07
2022-10-20 08:49:24 C 06 59 14.66 -04 49 15.4 Z X07
2022-10-20 08:56:23 C 06 59 16.07 -04 48 55.9 Z X07
2022-10-20 09:32:15 C 06 59 24.44 -04 49 12.1 V W09
2022-10-20 10:34:57 C 06 59 36.97 -04 46 17.7 V W09
2022-10-20 11:30:43 C 06 59 50.10 -04 43 30.5 U V16
2022-10-20 11:35:27 C 06 59 51.03 -04 43 17.5 U V16
2022-10-20 11:40:09 C 06 59 51.96 -04 43 04.4 U V16
2022-10-20 11:44:52 C 06 59 52.88 -04 42 51.2 U V16
2022-10-20 11:49:35 C 06 59 53.80 -04 42 38.3 U V16
2022-10-20 11:54:18 C 06 59 54.73 -04 42 25.1 U V16
2022-10-20 11:59:02 C 06 59 55.67 -04 42 11.4 U V16
2022-10-20 12:03:47 C 06 59 56.58 -04 41 58.9 U V16
2022-10-20 13:58:07 C 07 00 23.748 -04 36 24.59 V T05
2022-10-20 14:00:43 C 07 00 24.262 -04 36 17.35 V T05
2022-10-20 14:05:16 C 07 00 25.154 -04 36 04.82 V T05
2022-10-20 14:19:41 C 07 00 27.948 -04 35 25.12 V T05
2022-10-21 01:16:27 C 07 02 51.08 -04 05 58.1 q L04
2022-10-21 01:36:57 C 07 02 55.11 -04 05 02.6 q L04
2022-10-21 01:50:33 C 07 02 58.459 -04 02 22.52 V M22
2022-10-21 01:54:38 C 07 02 59.246 -04 02 11.51 V M22
2022-10-21 01:57:27 C 07 02 59.14 -04 04 07.1 q L04
2022-10-21 02:03:50 C 07 03 01.010 -04 01 46.70 V M22
2022-10-21 02:17:57 C 07 03 03.15 -04 03 11.5 q L04
2022-10-21 02:38:26 C 07 03 07.14 -04 02 16.0 q L04
2022-10-21 02:58:56 C 07 03 11.12 -04 01 20.5 q L04
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)