496816 (1989 UP)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4722721906 ± 7.57e-09
Semi-major axis (a)1.8613993311 AU ± 6.23e-10
Inclination (i)3.85484022° ± 1.42e-06
Long. of Asc. Node (Ω)53.15019247° ± 9.16e-06
Arg. of Perihelion (ω)17.83613492° ± 9.63e-06
Mean Anomaly (M)51.74610026° ± 1.41e-06
Mean Motion (n)0.3881083137°/day ± 1.95e-10
Perihelion dist (q)0.98231219 AU ± 1.41e-08
Aphelion dist (Q)2.74048647 AU ± 1.41e-08
Orbital Period2.53956498 yr ± 1.28e-09
Physical Parameters
H (abs. magnitude)20.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.241″
Uncertainty0
Orbit TypeApollo
MOID0.004870 AU
Observations Used326
Radar Obs Used1
Oppositions17
Arc Total1989-2023
First Observation Used1989-10-27
Last Observation Used2023-02-13
Observations (383)
Date Type RA Dec Mag Band Observatory
2017-12-14 07:05:29 S 11 48 32.61 +15 47 14.6 L C51
2017-12-14 07:05:40 S 11 48 32.63 +15 47 15.3 L C51
2017-12-14 08:39:55 S 11 48 39.30 +15 47 05.9 L C51
2017-12-14 10:44:14 C 11 48 51.09 +15 46 28.7 U 703
2017-12-14 10:51:48 C 11 48 51.47 +15 46 28.9 U 703
2017-12-14 10:59:23 C 11 48 51.97 +15 46 28.4 U 703
2017-12-14 11:06:57 C 11 48 52.41 +15 46 28.2 U 703
2017-12-14 12:05:31 C 11 48 55.88 +15 46 23.1 U G96
2017-12-14 12:12:57 C 11 48 56.32 +15 46 22.6 U G96
2017-12-14 12:20:26 C 11 48 56.75 +15 46 21.9 U G96
2017-12-14 12:27:52 C 11 48 57.19 +15 46 21.4 U G96
2017-12-14 19:39:41 S 11 49 24.938 +15 46 00.34 L C51
2017-12-14 22:48:11 S 11 49 37.836 +15 45 40.97 L C51
2018-01-12 10:28:11 C 12 06 44.79 +16 19 23.1 U 703
2018-01-12 10:37:38 C 12 06 44.60 +16 19 24.4 U 703
2018-01-12 10:45:14 C 12 06 44.43 +16 19 27.7 U 703
2018-01-12 10:54:44 C 12 06 44.15 +16 19 29.6 U 703
2018-01-14 11:53:11 C 12 05 44.47 +16 30 20.4 U G96
2018-01-14 12:00:38 C 12 05 44.23 +16 30 22.2 U G96
2018-01-14 12:08:04 C 12 05 44.00 +16 30 24.1 U G96
2018-01-14 12:15:31 C 12 05 43.75 +16 30 25.8 U G96
2018-01-15 10:23:45 C 12 05 11.81 +16 35 39.6 U 703
2018-01-15 10:31:22 C 12 05 11.47 +16 35 41.4 U 703
2018-01-15 10:38:58 C 12 05 11.24 +16 35 43.6 U 703
2018-01-15 10:46:34 C 12 05 11.05 +16 35 45.3 U 703
2018-01-18 09:08:56 C 12 03 02.31 +16 53 37.5 U 703
2018-01-18 09:16:31 C 12 03 01.98 +16 53 39.2 U 703
2018-01-18 09:31:42 C 12 03 01.30 +16 53 45.0 U 703
2018-01-24 09:36:01 C 11 56 42.77 +17 34 46.8 U G96
2018-01-24 09:43:21 C 11 56 42.33 +17 34 49.0 U G96
2018-01-24 09:50:42 C 11 56 41.89 +17 34 51.2 U G96
2018-01-24 09:58:03 C 11 56 41.46 +17 34 53.6 U G96
2018-02-08 08:17:11 C 11 32 13.84 +19 17 42.8 U 703
2018-02-08 08:24:45 C 11 32 13.17 +19 17 44.4 U 703
2018-02-08 08:32:20 C 11 32 12.54 +19 17 46.6 U 703
2018-02-08 08:39:53 C 11 32 11.82 +19 17 48.0 U 703
2018-02-10 10:12:17 C 11 28 11.459 +19 29 22.10 U F51
2018-02-10 10:30:44 C 11 28 09.828 +19 29 26.47 U F51
2018-02-23 06:35:34 C 11 03 12.16 +20 09 32.1 U 703
2018-02-23 06:43:05 C 11 03 11.66 +20 09 31.8 U 703
2018-02-23 06:58:07 C 11 03 10.37 +20 09 31.9 U 703
2018-02-26 04:22:24 C 10 58 04.57 +20 10 07.4 U G96
2018-02-26 04:29:57 C 10 58 03.99 +20 10 08.1 U G96
2018-02-26 04:37:30 C 10 58 03.43 +20 10 07.5 U G96
2018-02-26 04:45:02 C 10 58 02.86 +20 10 07.7 U G96
2018-03-06 07:22:04 C 10 45 41.315 +19 56 13.59 U F51
2018-03-06 07:39:03 C 10 45 40.308 +19 56 11.64 U F51
2018-03-06 07:56:01 C 10 45 39.298 +19 56 09.68 U F51
2018-03-06 08:13:03 C 10 45 38.281 +19 56 07.86 U F51
2018-03-16 05:51:19 C 10 35 09.29 +19 13 00.6 U G96
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2017-10-31 08:00:00 114597.914 1 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)