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
2018-03-16 05:58:44 C 10 35 09.01 +19 12 58.9 U G96
2018-03-16 06:06:12 C 10 35 08.74 +19 12 57.5 U G96
2018-03-16 06:13:39 C 10 35 08.45 +19 12 55.4 U G96
2018-04-05 04:12:09 C 10 29 16.57 +16 52 04.6 q H21
2018-04-05 04:33:44 C 10 29 16.66 +16 51 56.5 q H21
2018-04-05 04:55:20 C 10 29 16.72 +16 51 50.2 q H21
2022-08-02 13:22:30 C 22 24 49.183 -19 18 08.08 U F52
2022-08-02 13:38:12 C 22 24 48.637 -19 18 14.44 U F52
2022-08-02 13:53:54 C 22 24 48.088 -19 18 20.65 U F52
2022-08-18 09:13:44 C 22 06 47.359 -22 09 19.43 U F51
2022-08-18 09:30:32 C 22 06 46.239 -22 09 27.66 U F51
2022-08-18 10:03:58 C 22 06 44.040 -22 09 43.86 U F51
2022-08-30 08:27:40 C 21 46 34.226 -24 20 24.75 U F51
2022-08-30 08:44:35 C 21 46 32.867 -24 20 31.82 U F51
2022-08-30 09:01:31 C 21 46 31.494 -24 20 38.99 U F51
2022-08-30 09:18:25 C 21 46 30.149 -24 20 45.81 U F51
2022-09-15 07:29:12 C 21 18 25.993 -26 12 36.64 U F52
2022-09-15 07:44:47 C 21 18 24.887 -26 12 39.23 U F52
2022-09-15 08:00:23 C 21 18 23.807 -26 12 41.50 U F52
2022-09-27 06:51:09 C 21 03 15.801 -26 26 03.79 U F52
2022-09-27 07:06:44 C 21 03 15.134 -26 26 02.82 U F52
2022-09-27 07:37:49 C 21 03 13.777 -26 26 00.94 U F52
2023-01-13 01:47:58 C 00 48 49.486 +13 19 37.42 V G96
2023-01-13 01:56:05 C 00 48 51.318 +13 19 53.76 V G96
2023-01-13 02:04:12 C 00 48 53.053 +13 20 10.61 V G96
2023-01-13 02:12:19 C 00 48 54.799 +13 20 27.17 V G96
2023-02-03 03:29:03 C 03 04 58.188 +28 57 20.38 V G96
2023-02-03 03:36:36 C 03 05 00.445 +28 57 30.02 V G96
2023-02-03 03:44:10 C 03 05 02.710 +28 57 40.46 V G96
2023-02-03 03:51:43 C 03 05 04.938 +28 57 49.93 V G96
2023-02-13 03:38:21 C 04 18 08.316 +32 52 35.69 V G96
2023-02-13 03:45:45 C 04 18 10.476 +32 52 40.58 V G96
2023-02-13 03:53:10 C 04 18 12.611 +32 52 44.29 V 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)