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
2023-11-21 12:58:27 S 10 52 10.322 -01 25 57.90 V C57
2023-11-21 19:38:27 S 10 53 07.560 -01 15 35.50 V C57
2023-11-21 19:38:27 s 1 -17515.212 0 +230590.27 8740.0 C57
2023-11-21 20:58:27 S 10 53 18.938 -01 13 28.38 V C57
2023-11-21 20:58:27 s 1 -21132.931 0 +226378.61 6620.0 C57
2023-11-21 21:58:27 S 10 53 27.216 -01 11 56.29 V C57
2023-11-21 21:58:27 s 1 -23838.006 0 +223129.53 6050.0 C57
2023-11-21 23:18:27 S 10 53 38.376 -01 09 49.25 V C57
2023-11-21 23:18:27 s 1 -27431.655 0 +218675.33 0.357 C57
2023-11-21 23:38:27 S 10 53 41.119 -01 09 18.25 V C57
2023-11-21 23:38:27 s 1 -28327.418 0 +217539.67 0.531 C57
2023-11-22 00:18:27 S 10 53 46.778 -01 08 13.67 V C57
2023-11-22 00:18:27 s 1 -30115.479 0 +215241.89 0.608 C57
2023-11-22 00:38:27 S 10 53 49.742 -01 07 44.54 V C57
2023-11-22 00:38:27 s 1 -31007.654 0 +214079.49 0.301 C57
2023-11-22 01:18:27 S 10 53 55.872 -01 06 33.62 V C57
2023-11-22 01:18:27 s 1 -32788.106 0 +211727.92 0.899 C57
2023-11-22 02:38:27 S 10 54 07.066 -01 04 29.75 V C57
2023-11-22 02:38:27 s 1 -36331.847 0 +206915.73 0.756 C57
2023-11-22 02:58:27 S 10 54 09.425 -01 04 01.34 V C57
2023-11-22 02:58:27 s 1 -37213.913 0 +205689.85 0.289 C57
2023-11-22 03:58:27 S 10 54 18.230 -01 02 18.28 V C57
2023-11-22 03:58:27 s 1 -39849.919 0 +201956.72 0.34 C57
2023-11-23 10:47:49 C 10 58 29.669 -00 00 14.40 V 703
2023-11-23 10:55:13 C 10 58 30.882 -00 00 02.20 V 703
2023-11-23 11:02:36 C 10 58 32.081 +00 00 09.83 V 703
2023-11-23 11:10:00 C 10 58 33.438 +00 00 22.90 V 703
2023-12-05 02:48:26 S 12 00 45.230 +09 40 21.43 V C57
2023-12-05 02:48:26 s 1 -29671.270 0 +210963.89 0.463 C57
2023-12-05 03:48:27 S 12 00 59.966 +09 42 39.64 V C57
2023-12-05 03:48:27 s 1 -32384.548 0 +207404.72 0.459 C57
2023-12-05 05:08:26 S 12 01 19.550 +09 45 43.16 V C57
2023-12-05 05:08:26 s 1 -35981.520 0 +202528.18 0.747 C57
2023-12-05 05:48:26 S 12 01 29.966 +09 47 23.78 V C57
2023-12-05 05:48:26 s 1 -37770.139 0 +200033.30 0.894 C57
2023-12-05 06:48:27 S 12 01 45.026 +09 49 34.68 V C57
2023-12-05 06:48:27 s 1 -40439.366 0 +196219.22 0.685 C57
2023-12-05 08:48:26 S 12 02 13.997 +09 54 10.62 V C57
2023-12-05 08:48:26 s 1 -45722.352 0 +188329.84 0.725 C57
2023-12-05 10:48:26 S 12 02 43.591 +09 59 04.67 V C57
2023-12-05 10:48:26 s 1 -50919.215 0 +180086.34 0.488 C57
2023-12-05 15:28:27 S 12 03 53.690 +10 10 06.17 V C57
2023-12-05 15:28:27 s 1 -62616.986 0 +159438.29 0.71 C57
2023-12-05 16:08:27 S 12 04 03.516 +10 11 45.67 V C57
2023-12-05 16:08:27 s 1 -64228.938 0 +156323.98 0.343 C57
2023-12-05 18:48:27 S 12 04 43.246 +10 18 12.53 V C57
2023-12-05 18:48:27 s 1 -70497.138 0 +143448.88 0.439 C57
2023-12-06 04:48:26 S 12 07 11.369 +10 43 09.55 V C57
2023-12-06 04:48:26 s 1 -90475.231 0 +89194.062 0.471 C57
2023-12-10 12:30:16 C 12 38 25.634 +15 14 56.76 V 703
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)