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
2017-09-22 11:02:32 C 01 33 14.56 -06 37 32.2 L T05
2017-09-22 11:03:11 C 01 33 14.62 -06 37 31.9 L T05
2017-09-22 11:03:51 C 01 33 14.67 -06 37 31.9 L T05
2017-09-22 11:11:46 C 01 33 15.15 -06 37 32.4 L T05
2017-09-22 11:13:50 C 01 33 15.31 -06 37 32.3 L T05
2017-09-22 11:22:13 C 01 33 15.78 -06 37 32.7 L T05
2017-09-22 11:23:34 C 01 33 15.89 -06 37 32.4 L T05
2017-09-22 11:32:12 C 01 33 16.41 -06 37 33.3 L T05
2017-09-25 06:57:55 C 01 38 23.46 -06 40 46.1 q 703
2017-09-25 07:05:40 C 01 38 24.00 -06 40 46.1 q 703
2017-09-25 07:13:26 C 01 38 24.55 -06 40 47.0 q 703
2017-09-25 07:21:14 C 01 38 25.10 -06 40 46.8 q 703
2017-09-25 11:34:07 C 01 38 44.521 -06 40 48.77 L F51
2017-09-25 11:52:33 C 01 38 45.788 -06 40 49.35 L F51
2017-09-25 11:53:29 C 01 38 45.852 -06 40 49.35 L F51
2017-09-25 12:11:09 C 01 38 47.066 -06 40 49.93 L F51
2017-09-25 12:12:04 C 01 38 47.108 -06 40 49.87 L F51
2017-09-25 12:30:37 C 01 38 48.393 -06 40 50.47 L F51
2017-09-26 08:10:24 C 01 40 23.81 -06 41 31.9 q H45
2017-09-26 08:12:47 C 01 40 23.97 -06 41 32.2 q H45
2017-09-26 08:14:57 C 01 40 24.16 -06 41 32.3 q H45
2017-09-26 08:17:49 C 01 40 24.32 -06 41 32.4 q H45
2017-09-26 08:19:45 C 01 40 24.47 -06 41 32.4 q H45
2017-09-26 08:21:36 C 01 40 24.63 -06 41 32.6 q H45
2017-09-26 10:36:02 C 01 40 36.92 -06 41 27.2 L T05
2017-09-26 10:37:50 C 01 40 37.049 -06 41 27.12 L F51
2017-09-26 10:44:00 C 01 40 37.49 -06 41 27.2 L T05
2017-09-26 10:52:58 C 01 40 38.12 -06 41 27.5 L T05
2017-09-26 10:55:51 C 01 40 38.336 -06 41 27.58 L F51
2017-09-26 11:02:55 C 01 40 38.83 -06 41 27.9 L T05
2017-09-26 11:13:50 C 01 40 39.619 -06 41 28.05 L F51
2017-09-26 11:18:54 C 01 40 38.23 -06 41 34.1 o 691
2017-09-26 11:31:41 C 01 40 40.890 -06 41 28.50 L F51
2017-09-26 11:47:34 C 01 40 40.38 -06 41 34.2 o 691
2017-09-29 07:32:11 C 01 46 36.06 -06 41 54.6 q 703
2017-09-29 07:41:16 C 01 46 36.81 -06 41 54.5 q 703
2017-09-29 07:50:10 C 01 46 37.55 -06 41 54.6 q 703
2017-09-29 07:59:04 C 01 46 38.28 -06 41 54.6 q 703
2017-09-29 12:33:10 C 01 47 02.484 -06 41 42.21 L F51
2017-09-29 12:49:55 C 01 47 03.835 -06 41 41.79 L F51
2017-09-29 13:06:40 C 01 47 05.193 -06 41 41.36 L F51
2017-09-29 13:23:21 C 01 47 06.553 -06 41 40.91 L F51
2017-10-02 10:38:28 C 01 53 59.79 -06 38 32.5 L T08
2017-10-02 10:43:51 C 01 54 00.27 -06 38 31.7 L T08
2017-10-02 10:48:41 C 01 54 00.74 -06 38 31.9 L T08
2017-10-02 10:54:10 C 01 54 01.24 -06 38 31.8 L T08
2017-10-02 10:59:04 C 01 54 01.69 -06 38 30.7 L T08
2017-10-02 11:04:33 C 01 54 02.17 -06 38 30.6 L T08
2017-10-02 11:09:29 C 01 54 02.64 -06 38 30.3 L T08
2017-10-02 11:15:00 C 01 54 03.15 -06 38 29.4 L T08
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)