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
2017-10-10 10:56:24 C 02 19 25.49 -06 01 06.8 L T08
2017-10-10 11:08:04 C 02 19 27.22 -06 01 02.4 L T08
2017-10-10 11:19:51 C 02 19 28.96 -06 00 58.3 L T08
2017-10-10 11:30:02 C 02 19 30.46 -06 00 54.9 L T08
2017-10-11 08:03:14 C 02 23 02.23 -05 53 21.5 U 703
2017-10-11 08:10:20 C 02 23 03.36 -05 53 18.7 U 703
2017-10-11 08:17:26 C 02 23 04.50 -05 53 15.9 U 703
2017-10-11 08:24:32 C 02 23 05.64 -05 53 13.0 U 703
2017-10-11 10:50:53 C 02 23 32.16 -05 52 00.7 L T08
2017-10-11 11:02:50 C 02 23 34.05 -05 51 56.0 L T08
2017-10-11 11:14:37 C 02 23 35.94 -05 51 51.2 L T08
2017-10-11 11:24:49 C 02 23 37.56 -05 51 47.0 L T08
2017-10-13 07:05:57 C 02 31 55.76 -05 31 38.2 o 691
2017-10-13 07:18:12 C 02 31 58.02 -05 31 31.9 o 691
2017-10-13 07:30:26 C 02 32 00.27 -05 31 25.6 o 691
2017-10-13 22:21:24 C 02 35 05.14 -05 23 26.4 u K83
2017-10-13 22:25:37 C 02 35 05.99 -05 23 24.3 u K83
2017-10-13 22:29:19 C 02 35 06.74 -05 23 22.2 u K83
2017-10-13 22:32:20 C 02 35 07.32 -05 23 19.9 u K83
2017-10-13 22:35:06 C 02 35 07.89 -05 23 18.5 u K83
2017-10-14 08:07:09 C 02 37 09.30 -05 17 31.6 U 703
2017-10-14 08:14:20 C 02 37 10.73 -05 17 27.4 U 703
2017-10-14 08:21:32 C 02 37 12.16 -05 17 23.0 U 703
2017-10-14 08:28:44 C 02 37 13.60 -05 17 18.7 U 703
2017-10-17 08:14:28 C 02 54 47.44 -04 24 11.7 U G96
2017-10-17 08:22:10 C 02 54 49.39 -04 24 04.9 U G96
2017-10-17 08:29:45 C 02 54 51.31 -04 23 58.3 U G96
2017-10-17 08:37:20 C 02 54 53.23 -04 23 51.5 U G96
2017-10-19 01:03:09 C 03 06 46.80 -03 43 56.2 q 160
2017-10-19 01:05:12 C 03 06 47.40 -03 43 54.0 q 160
2017-10-19 01:07:13 C 03 06 47.96 -03 43 51.7 q 160
2017-10-21 06:50:23 C 03 25 30.61 -02 35 40.2 o 691
2017-10-21 07:12:52 C 03 25 38.64 -02 35 08.0 o 691
2017-10-21 07:35:30 C 03 25 46.77 -02 34 35.4 o 691
2017-10-22 02:05:11 C 03 33 02.83 -02 06 47.9 d Z35
2017-10-22 22:36:41 C 03 41 50.21 -01 32 40.8 d Z35
2017-10-22 22:52:09 C 03 41 56.88 -01 32 13.6 d Z35
2017-10-22 23:11:11 C 03 42 04.74 -01 31 41.0 d Z35
2017-10-23 09:28:21 C 03 46 37.86 -01 13 02.4 U 703
2017-10-23 09:35:32 C 03 46 40.91 -01 12 50.7 U 703
2017-10-23 09:42:43 C 03 46 43.96 -01 12 38.2 U 703
2017-10-23 09:49:53 C 03 46 47.05 -01 12 25.1 U 703
2017-10-24 02:03:59 C 03 54 26.56 -00 41 47.7 q 160
2017-10-24 02:06:02 C 03 54 27.51 -00 41 43.8 q 160
2017-10-24 02:08:00 C 03 54 28.40 -00 41 39.7 q 160
2017-10-25 01:30:51 C 04 06 21.47 +00 07 01.8 d Z35
2017-10-25 01:50:51 C 04 06 31.55 +00 07 45.8 d Z35
2017-10-25 02:13:42 C 04 06 43.03 +00 08 36.4 d Z35
2017-10-25 10:04:29 C 04 10 52.64 +00 26 11.6 q H45
2017-10-25 10:05:50 C 04 10 53.31 +00 26 14.6 q H45
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)