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
2015-02-24 13:57:24 C 14 03 34.324 -07 40 51.05 V F51
2015-02-24 14:16:09 C 14 03 34.123 -07 40 49.03 V F51
2015-02-24 14:34:54 C 14 03 33.916 -07 40 46.92 V F51
2015-02-24 14:53:42 C 14 03 33.717 -07 40 44.79 V F51
2015-03-21 11:31:17 C 13 46 39.930 -05 38 59.45 V F51
2015-03-21 11:47:36 C 13 46 39.147 -05 38 54.68 V F51
2015-03-21 12:03:50 C 13 46 38.370 -05 38 50.13 V F51
2015-03-21 12:20:05 C 13 46 37.591 -05 38 45.40 V F51
2015-03-22 08:37:14 C 13 45 40.69 -05 32 56.3 o 691
2015-03-22 09:00:58 C 13 45 39.53 -05 32 49.3 o 691
2015-03-22 09:37:11 C 13 45 37.78 -05 32 39.1 o 691
2015-03-22 10:56:41 C 13 45 34.173 -05 32 14.54 V F51
2015-03-22 10:57:38 C 13 45 34.130 -05 32 14.26 V F51
2015-03-22 11:13:26 C 13 45 33.353 -05 32 09.69 V F51
2015-03-22 11:14:23 C 13 45 33.308 -05 32 09.39 V F51
2015-03-22 11:31:12 C 13 45 32.474 -05 32 04.54 V F51
2015-03-22 11:46:58 C 13 45 31.700 -05 31 59.96 V F51
2015-03-22 11:47:55 C 13 45 31.652 -05 31 59.67 V F51
2015-04-09 08:37:32 C 13 22 02.25 -03 17 48.1 q G96
2015-04-09 08:44:52 C 13 22 01.79 -03 17 46.0 q G96
2015-04-09 08:52:14 C 13 22 01.31 -03 17 44.0 q G96
2015-04-09 08:59:35 C 13 22 00.92 -03 17 41.2 q G96
2015-04-10 09:42:18 C 13 20 33.77 -03 09 56.1 q G96
2015-04-10 09:48:11 C 13 20 33.41 -03 09 54.2 q G96
2015-04-10 09:54:05 C 13 20 33.05 -03 09 52.4 q G96
2015-04-10 09:59:58 C 13 20 32.71 -03 09 50.4 q G96
2015-04-12 04:07:06 C 13 18 04.981 -02 56 48.13 X G37
2015-04-12 04:08:19 C 13 18 04.906 -02 56 47.78 X G37
2015-04-12 04:09:33 C 13 18 04.836 -02 56 47.37 X G37
2015-04-12 04:12:41 C 13 18 04.650 -02 56 46.41 X G37
2015-04-12 04:14:54 C 13 18 04.514 -02 56 45.69 X G37
2015-04-12 04:17:08 C 13 18 04.384 -02 56 45.05 X G37
2015-04-12 04:19:43 C 13 18 04.226 -02 56 44.27 X G37
2015-04-12 04:21:57 C 13 18 04.098 -02 56 43.60 X G37
2015-04-12 04:24:10 C 13 18 03.966 -02 56 42.91 X G37
2015-04-12 04:28:53 C 13 18 03.679 -02 56 41.49 X G37
2015-04-12 04:31:06 C 13 18 03.544 -02 56 40.76 X G37
2015-04-12 04:33:22 C 13 18 03.410 -02 56 40.09 X G37
2015-04-12 04:35:35 C 13 18 03.273 -02 56 39.42 X G37
2015-04-12 04:37:49 C 13 18 03.145 -02 56 38.71 X G37
2015-04-12 04:40:02 C 13 18 03.009 -02 56 38.04 X G37
2015-04-12 04:42:16 C 13 18 02.878 -02 56 37.38 X G37
2015-04-12 04:44:29 C 13 18 02.745 -02 56 36.67 X G37
2015-04-12 04:46:43 C 13 18 02.610 -02 56 35.99 X G37
2015-04-12 04:48:56 C 13 18 02.480 -02 56 35.30 X G37
2015-04-12 04:53:23 C 13 18 02.207 -02 56 33.90 X G37
2015-04-12 04:58:51 C 13 18 01.883 -02 56 32.25 X G37
2015-04-12 05:01:05 C 13 18 01.747 -02 56 31.62 X G37
2015-04-12 05:03:18 C 13 18 01.621 -02 56 30.96 X G37
2015-04-12 05:05:32 C 13 18 01.482 -02 56 30.27 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)