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 00:38:27 S 10 50 25.262 -01 44 40.27 V C57
2023-11-21 00:38:27 s 1 +34172.169 0 +276821.30 1060.0 C57
2023-11-21 00:58:27 S 10 50 27.487 -01 44 11.47 V C57
2023-11-21 00:58:27 s 1 +33277.912 0 +276215.82 7030.0 C57
2023-11-21 01:18:27 S 10 50 30.300 -01 43 41.84 V C57
2023-11-21 01:18:27 s 1 +32382.821 0 +275603.53 8030.0 C57
2023-11-21 01:38:27 S 10 50 33.576 -01 43 08.36 V C57
2023-11-21 01:38:27 s 1 +31486.900 0 +274984.27 3580.0 C57
2023-11-21 02:18:27 S 10 50 39.214 -01 42 14.08 V C57
2023-11-21 02:18:27 s 1 +29692.688 0 +273725.21 8210.0 C57
2023-11-21 02:38:27 S 10 50 42.226 -01 41 36.78 V C57
2023-11-21 02:38:27 s 1 +28794.417 0 +273085.20 6400.0 C57
2023-11-21 02:58:27 S 10 50 45.038 -01 41 06.90 V C57
2023-11-21 02:58:27 s 1 +27895.405 0 +272438.28 8460.0 C57
2023-11-21 03:18:27 S 10 50 47.611 -01 40 39.07 V C57
2023-11-21 03:18:27 s 1 +26995.667 0 +271784.39 3980.0 C57
2023-11-21 03:38:27 S 10 50 50.364 -01 40 10.85 V C57
2023-11-21 03:38:27 s 1 +26095.211 0 +271123.39 2440.0 C57
2023-11-21 03:58:27 S 10 50 53.306 -01 39 41.65 V C57
2023-11-21 03:58:27 s 1 +25194.071 0 +270455.41 3950.0 C57
2023-11-21 04:38:27 S 10 50 59.052 -01 38 39.23 V C57
2023-11-21 04:38:27 s 1 +23389.794 0 +269098.14 4370.0 C57
2023-11-21 04:58:27 S 10 51 02.201 -01 38 10.25 V C57
2023-11-21 04:58:27 s 1 +22486.701 0 +268408.85 2850.0 C57
2023-11-21 05:38:27 S 10 51 07.505 -01 37 09.37 V C57
2023-11-21 05:38:27 s 1 +20678.698 0 +267008.73 4640.0 C57
2023-11-21 05:58:27 S 10 51 10.963 -01 36 38.63 V C57
2023-11-21 05:58:27 s 1 +19773.833 0 +266297.89 7510.0 C57
2023-11-21 06:18:27 S 10 51 13.351 -01 36 07.49 V C57
2023-11-21 06:18:27 s 1 +18868.421 0 +265579.84 1310.0 C57
2023-11-21 06:38:27 S 10 51 16.222 -01 35 39.77 V C57
2023-11-21 06:38:27 s 1 +17962.475 0 +264854.43 5440.0 C57
2023-11-21 06:58:27 S 10 51 19.248 -01 35 03.12 V C57
2023-11-21 06:58:27 s 1 +17056.028 0 +264121.80 50.0 C57
2023-11-21 07:18:27 S 10 51 22.058 -01 34 33.35 V C57
2023-11-21 07:18:27 s 1 +16149.099 0 +263381.87 4680.0 C57
2023-11-21 07:38:27 S 10 51 24.720 -01 34 07.75 V C57
2023-11-21 07:38:27 s 1 +15241.702 0 +262634.50 8720.0 C57
2023-11-21 07:58:27 S 10 51 27.665 -01 33 38.41 V C57
2023-11-21 07:58:27 s 1 +14333.871 0 +261879.84 2310.0 C57
2023-11-21 08:38:27 S 10 51 33.799 -01 32 36.42 V C57
2023-11-21 08:38:27 s 1 +12516.981 0 +260348.20 6120.0 C57
2023-11-21 09:18:27 S 10 51 39.218 -01 31 34.32 V C57
2023-11-21 09:18:27 s 1 +10698.616 0 +258786.80 3710.0 C57
2023-11-21 09:58:27 S 10 51 45.341 -01 30 36.14 V C57
2023-11-21 10:18:27 S 10 51 48.120 -01 29 58.27 V C57
2023-11-21 10:38:27 S 10 51 50.839 -01 29 33.00 V C57
2023-11-21 10:58:27 S 10 51 53.357 -01 28 58.73 V C57
2023-11-21 11:18:27 S 10 51 56.686 -01 28 26.11 V C57
2023-11-21 11:38:27 S 10 51 58.922 -01 27 58.54 V C57
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)