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
2017-10-31 14:05:47 C 05 52 07.28 +07 26 20.7 T08
2017-11-01 23:59:30 C 06 20 05.45 +09 11 22.6 q 160
2017-11-02 00:01:26 C 06 20 07.02 +09 11 28.6 q 160
2017-11-02 00:03:22 C 06 20 08.60 +09 11 34.7 q 160
2017-11-02 00:10:09 C 06 20 14.44 +09 11 38.6 U J69
2017-11-02 00:15:15 C 06 20 18.61 +09 11 54.2 U J69
2017-11-02 00:20:20 C 06 20 22.76 +09 12 10.4 U J69
2017-11-02 00:25:26 C 06 20 26.92 +09 12 26.0 U J69
2017-11-02 00:30:31 C 06 20 31.04 +09 12 41.9 U J69
2017-11-02 00:35:36 C 06 20 35.21 +09 12 57.7 U J69
2017-11-02 13:03:12 C 06 30 58.29 +09 51 58.6 T05
2017-11-02 13:10:16 C 06 31 03.91 +09 52 19.9 T05
2017-11-02 13:10:55 C 06 31 04.43 +09 52 21.8 T05
2017-11-02 13:29:51 C 06 31 19.50 +09 53 18.9 T05
2017-11-09 09:44:04 C 08 37 27.73 +15 35 05.7 u H21
2017-11-09 09:46:31 C 08 37 29.21 +15 35 08.6 u H21
2017-11-09 09:49:28 C 08 37 31.00 +15 35 11.7 u H21
2017-11-10 18:46:39 S 08 57 22.094 +16 08 18.38 L C51
2017-11-13 03:18:45 S 09 26 57.134 +16 42 35.50 L C51
2017-11-13 06:27:15 S 09 28 25.963 +16 43 55.02 L C51
2017-11-13 09:35:45 S 09 29 53.89 +16 45 11.7 L C51
2017-11-13 11:10:00 S 09 30 37.47 +16 45 48.5 L C51
2017-11-13 12:44:15 S 09 31 20.84 +16 46 24.8 L C51
2017-11-13 14:18:30 S 09 32 03.94 +16 47 00.5 L C51
2017-11-13 15:52:45 S 09 32 46.81 +16 47 35.2 L C51
2017-11-13 17:27:00 S 09 33 29.357 +16 48 09.54 L C51
2017-11-13 23:44:00 S 09 36 17.724 +16 50 18.89 L C51
2017-11-15 09:38:45 C 09 50 33.07 +16 58 08.8 U G96
2017-11-15 09:46:14 C 09 50 35.89 +16 58 10.9 U G96
2017-11-15 09:53:42 C 09 50 38.71 +16 58 13.2 U G96
2017-11-15 10:37:59 C 09 50 55.17 +16 58 26.8 U G96
2017-11-26 11:47:14 C 11 00 33.37 +16 47 55.4 U G96
2017-11-26 11:54:41 C 11 00 34.56 +16 47 54.6 U G96
2017-11-26 12:04:01 C 11 00 36.05 +16 47 53.5 U G96
2017-11-26 12:13:09 C 11 00 37.48 +16 47 52.5 U G96
2017-11-27 11:55:12 C 11 04 38.10 +16 44 21.7 U 703
2017-11-27 12:02:19 C 11 04 39.20 +16 44 21.8 U 703
2017-11-27 12:09:25 C 11 04 40.26 +16 44 20.2 U 703
2017-11-27 12:16:31 C 11 04 41.45 +16 44 20.2 U 703
2017-12-08 11:16:28 S 11 37 10.97 +16 04 20.7 L C51
2017-12-08 17:33:28 S 11 37 45.75 +16 03 28.2 L C51
2017-12-08 20:41:58 S 11 38 03.10 +16 03 01.6 L C51
2017-12-09 02:58:58 S 11 38 37.35 +16 02 09.9 L C51
2017-12-09 06:07:28 S 11 38 54.33 +16 01 44.0 L C51
2017-12-09 06:07:39 S 11 38 54.35 +16 01 44.7 L C51
2017-12-13 10:40:14 S 11 47 04.62 +15 49 22.3 L C51
2017-12-13 13:48:44 S 11 47 18.47 +15 49 03.7 L C51
2017-12-13 16:57:14 S 11 47 32.20 +15 48 42.6 L C51
2017-12-14 00:48:29 S 11 48 05.96 +15 47 53.8 L C51
2017-12-14 03:56:59 S 11 48 19.354 +15 47 34.12 L C51
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)