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
2017-04-18 07:53:34 C 12 07 56.384 +04 47 22.65 X G37
2017-04-18 07:55:48 C 12 07 56.286 +04 47 23.02 X G37
2017-04-18 07:58:01 C 12 07 56.185 +04 47 23.41 X G37
2017-04-18 08:00:15 C 12 07 56.089 +04 47 23.77 X G37
2017-04-18 08:02:28 C 12 07 55.991 +04 47 24.14 X G37
2017-04-18 08:04:42 C 12 07 55.894 +04 47 24.53 X G37
2017-04-18 08:06:57 C 12 07 55.793 +04 47 24.91 X G37
2017-04-18 08:09:11 C 12 07 55.695 +04 47 25.29 X G37
2017-04-18 08:11:25 C 12 07 55.601 +04 47 25.64 X G37
2017-04-18 08:13:38 C 12 07 55.497 +04 47 26.03 X G37
2017-04-18 08:15:52 C 12 07 55.402 +04 47 26.40 X G37
2017-04-18 08:18:05 C 12 07 55.300 +04 47 26.77 X G37
2017-04-18 08:20:19 C 12 07 55.204 +04 47 27.15 X G37
2017-04-20 08:44:26 C 12 05 55.587 +04 55 10.82 V F51
2017-04-20 08:59:48 C 12 05 54.946 +04 55 13.17 V F51
2017-04-20 09:15:10 C 12 05 54.304 +04 55 15.43 V F51
2017-04-20 09:30:32 C 12 05 53.665 +04 55 17.70 V F51
2017-04-27 07:19:56 C 12 00 05.934 +05 14 02.19 V F51
2017-04-27 07:39:36 C 12 00 05.307 +05 14 03.67 V F51
2017-04-27 07:59:24 C 12 00 04.678 +05 14 05.23 V F51
2017-04-27 08:19:16 C 12 00 04.049 +05 14 06.77 V F51
2018-09-11 11:19:40 C 08 05 05.88 +20 24 08.4 G96
2018-09-11 11:34:57 C 08 05 08.22 +20 24 03.0 G96
2018-09-11 11:46:14 C 08 05 09.92 +20 23 58.5 G96
2018-09-11 11:56:18 C 08 05 11.49 +20 23 55.6 G96
2018-12-14 12:38:58 C 11 58 13.62 +04 12 55.7 V G96
2018-12-14 12:47:07 C 11 58 14.07 +04 12 53.4 V G96
2018-12-14 12:55:16 C 11 58 14.58 +04 12 51.4 V G96
2018-12-14 13:03:27 C 11 58 14.98 +04 12 49.6 V G96
2019-01-15 14:06:58 C 12 27 35.112 +02 34 31.42 V F52
2019-01-15 14:25:42 C 12 27 35.352 +02 34 32.05 V F52
2019-01-15 14:44:20 C 12 27 35.592 +02 34 32.80 V F52
2019-01-15 15:03:00 C 12 27 35.836 +02 34 33.31 V F52
2019-01-31 07:54:26 C 12 27 58.285 +03 20 59.50 X G37
2019-01-31 07:56:01 C 12 27 58.262 +03 20 59.84 X G37
2019-01-31 07:59:03 C 12 27 58.216 +03 21 00.50 X G37
2019-01-31 08:01:31 C 12 27 58.180 +03 21 01.01 X G37
2019-01-31 08:05:16 C 12 27 58.124 +03 21 01.84 X G37
2019-01-31 08:07:29 C 12 27 58.091 +03 21 02.31 X G37
2019-01-31 08:09:43 C 12 27 58.058 +03 21 02.77 X G37
2019-01-31 08:12:30 C 12 27 58.015 +03 21 03.38 X G37
2019-01-31 08:14:43 C 12 27 57.980 +03 21 03.89 X G37
2019-01-31 08:16:57 C 12 27 57.948 +03 21 04.35 X G37
2019-01-31 08:19:10 C 12 27 57.914 +03 21 04.84 X G37
2019-01-31 08:21:24 C 12 27 57.881 +03 21 05.31 X G37
2019-01-31 08:23:45 C 12 27 57.845 +03 21 05.81 X G37
2019-01-31 08:25:58 C 12 27 57.812 +03 21 06.27 X G37
2019-01-31 08:28:12 C 12 27 57.777 +03 21 06.77 X G37
2019-01-31 08:30:26 C 12 27 57.742 +03 21 07.27 X G37
2019-01-31 08:32:39 C 12 27 57.711 +03 21 07.74 X G37
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)