481817 (2008 UL90)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3798991584 ± 2.13e-08
Semi-major axis (a)0.6950164942 AU ± 3.13e-09
Inclination (i)24.31071456° ± 3.75e-06
Long. of Asc. Node (Ω)81.12167332° ± 2.11e-06
Arg. of Perihelion (ω)183.66335876° ± 1.76e-05
Mean Anomaly (M)322.83845913° ± 4.92e-05
Mean Motion (n)1.7010599084°/day ± 1.15e-08
Perihelion dist (q)0.43098031 AU ± 1.50e-08
Aphelion dist (Q)0.95905268 AU ± 1.54e-08
Orbital Period0.57941891 yr ± 3.92e-09
Physical Parameters
H (abs. magnitude)18.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.441″
Uncertainty0
Orbit TypeAtira
MOID0.027203 AU
Observations Used414
Radar Obs Used6
Oppositions6
Arc Total2008-2023
First Observation Used2008-10-26
Last Observation Used2023-12-24
Observations (536)
Date Type RA Dec Mag Band Observatory
2012-12-03 03:52:18 C 11 57 37.17 +10 37 12.2 t 204
2012-12-03 04:02:40 C 11 57 39.77 +10 37 31.8 t 204
2012-12-03 04:14:27 C 11 57 42.77 +10 37 54.2 t 204
2014-01-25 05:27:50 C 00 42 37.305 +06 07 50.41 L F51
2014-01-25 05:35:24 C 00 42 38.096 +06 08 04.92 L F51
2014-01-25 05:42:57 C 00 42 38.888 +06 08 19.60 L F51
2014-01-25 05:50:32 C 00 42 39.682 +06 08 34.26 L F51
2016-12-17 17:14:39 C 21 30 30.95 +02 54 51.7 q 160
2016-12-17 17:16:34 C 21 30 31.40 +02 55 17.3 q 160
2016-12-17 17:18:29 C 21 30 31.84 +02 55 43.0 q 160
2016-12-17 17:32:01 C 21 30 35.96 +02 58 49.0 q C27
2016-12-17 17:40:34 C 21 30 37.93 +03 00 43.2 q C27
2016-12-17 18:08:59 C 21 30 44.52 +03 07 00.4 q C27
2016-12-17 18:15:34 C 21 30 46.07 +03 08 27.7 q C27
2016-12-17 18:20:57 C 21 30 47.33 +03 09 38.9 q C27
2016-12-18 17:17:16 C 21 36 14.97 +07 46 45.8 q 160
2016-12-18 17:19:06 C 21 36 15.32 +07 47 05.9 q 160
2016-12-18 17:20:56 C 21 36 15.69 +07 47 25.8 q 160
2016-12-19 16:57:30 C 21 40 55.20 +11 43 46.2 q B18
2016-12-19 16:58:30 C 21 40 55.38 +11 43 55.7 q B18
2016-12-19 16:59:30 C 21 40 55.55 +11 44 05.2 q B18
2016-12-19 17:00:30 C 21 40 55.74 +11 44 14.5 q B18
2016-12-19 17:01:30 C 21 40 55.89 +11 44 22.9 q B18
2016-12-19 17:02:30 C 21 40 56.06 +11 44 32.4 q B18
2016-12-19 17:03:30 C 21 40 56.24 +11 44 41.0 q B18
2016-12-19 17:04:31 C 21 40 56.39 +11 44 50.4 q B18
2016-12-19 17:05:30 C 21 40 56.56 +11 44 59.1 q B18
2016-12-19 17:06:31 C 21 40 56.73 +11 45 08.2 q B18
2016-12-19 17:07:30 C 21 40 57.02 +11 45 17.5 q B18
2016-12-19 17:08:30 C 21 40 57.07 +11 45 26.3 q B18
2016-12-19 17:09:30 C 21 40 57.25 +11 45 36.1 q B18
2016-12-19 17:10:30 C 21 40 57.43 +11 45 44.9 q B18
2016-12-19 17:11:30 C 21 40 57.58 +11 45 53.2 q B18
2016-12-19 17:12:30 C 21 40 57.75 +11 46 02.3 q B18
2016-12-19 17:13:31 C 21 40 57.92 +11 46 11.6 q B18
2016-12-19 17:14:30 C 21 40 58.08 +11 46 20.2 q B18
2016-12-19 17:15:31 C 21 40 58.28 +11 46 29.7 q B18
2016-12-19 17:16:30 C 21 40 58.42 +11 46 38.3 q B18
2016-12-19 17:17:31 C 21 40 58.60 +11 46 47.5 q B18
2016-12-19 17:18:30 C 21 40 58.77 +11 46 56.3 q B18
2016-12-19 17:19:30 C 21 40 58.93 +11 47 05.2 q B18
2016-12-19 17:20:30 C 21 40 59.10 +11 47 14.4 q B18
2016-12-19 17:21:31 C 21 40 59.28 +11 47 23.3 q B18
2016-12-20 00:20:57 C 21 42 14.77 +12 49 25.4 q W25
2016-12-20 00:22:07 C 21 42 15.50 +12 49 44.9 q H45
2016-12-20 00:22:52 C 21 42 15.61 +12 49 51.3 q H45
2016-12-20 00:24:10 C 21 42 15.80 +12 50 02.5 q H45
2016-12-20 00:25:06 C 21 42 15.94 +12 50 10.2 q H45
2016-12-20 00:26:17 C 21 42 16.11 +12 50 20.5 q H45
2016-12-20 00:27:34 C 21 42 16.31 +12 50 31.3 q H45
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2016-12-15 00:50:00 -326524.064 0.2 Hz 8560 -14 -14
2016-12-15 01:10:00 43175297.41 10 us 8560 -14 -14
2016-12-15 01:50:00 43268581.03 0.5 us 8560 -14 -14
2016-12-16 02:50:00 47209501.43 0.5 us 8560 -14 -14
2016-12-18 01:50:00 -555034.482 0.05 Hz 8560 -14 -14
2016-12-19 19:49:00 -167418.5466 0.017 Hz 2380 -1 -1
2016-12-20 21:03:00 73573145.98 0.5 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)