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
2023-11-19 08:38:27 S 10 44 39.571 -02 42 32.80 V C57
2023-11-19 08:38:27 s 1 +131644.47 1 +306038.10 8040.0 C57
2023-11-19 09:58:27 S 10 44 50.885 -02 40 41.23 V C57
2023-11-19 09:58:27 s 1 +128796.70 2 +306291.62 2460.0 C57
2023-11-19 10:18:27 S 10 44 53.628 -02 40 13.15 V C57
2023-11-19 10:18:27 s 1 +128079.72 3 +306343.23 4500.0 C57
2023-11-19 13:58:27 S 10 45 25.150 -02 35 05.57 V C57
2023-11-19 13:58:27 s 1 +120061.83 4 +306594.70 3520.0 C57
2023-11-19 15:58:27 S 10 45 42.326 -02 32 15.86 V C57
2023-11-19 15:58:27 s 1 +115589.19 3 +306483.75 670.0 C57
2023-11-19 16:18:27 S 10 45 45.502 -02 31 44.51 V C57
2023-11-19 16:18:27 s 1 +114837.08 9 +306447.97 7320.0 C57
2023-11-19 16:38:27 S 10 45 48.005 -02 31 13.33 V C57
2023-11-19 16:38:27 s 1 +114083.07 3 +306407.15 2490.0 C57
2023-11-19 16:58:27 S 10 45 51.254 -02 30 49.79 V C57
2023-11-19 16:58:27 s 1 +113327.19 5 +306361.38 6310.0 C57
2023-11-19 17:18:27 S 10 45 54.192 -02 30 18.90 V C57
2023-11-19 17:18:27 s 1 +112569.44 7 +306310.60 8890.0 C57
2023-11-19 17:38:27 S 10 45 56.945 -02 29 49.02 V C57
2023-11-19 17:38:27 s 1 +111809.80 8 +306254.74 320.0 C57
2023-11-19 17:58:27 S 10 45 59.940 -02 29 20.62 V C57
2023-11-19 17:58:27 s 1 +111048.32 7 +306193.90 760.0 C57
2023-11-19 20:18:27 S 10 46 19.975 -02 25 56.28 V C57
2023-11-19 20:18:27 s 1 +105666.43 5 +305625.55 4550.0 C57
2023-11-19 20:38:27 S 10 46 22.627 -02 25 36.80 V C57
2023-11-19 20:38:27 s 1 +104890.30 8 +305523.81 7910.0 C57
2023-11-19 21:18:27 S 10 46 28.603 -02 24 37.62 V C57
2023-11-19 21:18:27 s 1 +103332.71 6 +305304.90 4320.0 C57
2023-11-19 22:18:27 S 10 46 36.734 -02 23 13.92 V C57
2023-11-19 22:18:27 s 1 +100982.97 4 +304937.43 1210.0 C57
2023-11-20 01:18:27 S 10 47 03.667 -02 18 49.68 V C57
2023-11-20 01:18:27 s 1 +93839.689 0 +303549.87 80.0 C57
2023-11-20 01:38:27 S 10 47 06.144 -02 18 26.10 V C57
2023-11-20 01:38:27 s 1 +93037.441 0 +303368.91 8970.0 C57
2023-11-20 01:58:27 S 10 47 08.666 -02 17 54.78 V C57
2023-11-20 01:58:27 s 1 +92233.534 0 +303182.59 5860.0 C57
2023-11-20 03:38:27 S 10 47 23.760 -02 15 30.10 V C57
2023-11-20 03:38:27 s 1 +88189.108 0 +302169.22 5090.0 C57
2023-11-20 03:58:27 S 10 47 26.359 -02 14 57.12 V C57
2023-11-20 03:58:27 s 1 +87375.316 0 +301950.10 6940.0 C57
2023-11-20 04:18:27 S 10 47 29.239 -02 14 30.91 V C57
2023-11-20 04:18:27 s 1 +86559.910 0 +301725.47 5780.0 C57
2023-11-20 04:38:27 S 10 47 32.179 -02 14 00.96 V C57
2023-11-20 04:38:27 s 1 +85742.876 0 +301495.22 1440.0 C57
2023-11-20 04:58:27 S 10 47 35.045 -02 13 34.14 V C57
2023-11-20 04:58:27 s 1 +84924.259 0 +301259.47 3840.0 C57
2023-11-20 05:18:27 S 10 47 37.798 -02 13 04.04 V C57
2023-11-20 05:18:27 s 1 +84104.056 0 +301018.16 2800.0 C57
2023-11-20 06:38:27 S 10 47 49.351 -02 11 11.36 V C57
2023-11-20 06:38:27 s 1 +80807.481 0 +299996.61 1170.0 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)