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
2023-11-20 07:18:27 S 10 47 55.046 -02 10 14.23 V C57
2023-11-20 07:18:27 s 1 +79149.912 0 +299451.96 5850.0 C57
2023-11-20 07:38:27 S 10 47 57.982 -02 09 40.39 V C57
2023-11-20 07:38:27 s 1 +78318.818 0 +299171.03 6470.0 C57
2023-11-20 07:58:27 S 10 48 01.466 -02 09 14.44 V C57
2023-11-20 07:58:27 s 1 +77486.225 0 +298884.43 2480.0 C57
2023-11-20 08:38:27 S 10 48 06.845 -02 08 13.81 V C57
2023-11-20 08:38:27 s 1 +75816.523 0 +298293.95 9850.0 C57
2023-11-20 08:58:27 S 10 48 10.061 -02 07 48.76 V C57
2023-11-20 08:58:27 s 1 +74979.445 0 +297990.08 930.0 C57
2023-11-20 12:58:27 S 10 48 44.304 -02 01 54.34 V C57
2023-11-20 12:58:27 s 1 +64822.407 0 +293885.75 2970.0 C57
2023-11-20 13:18:27 S 10 48 46.814 -02 01 21.58 V C57
2023-11-20 13:18:27 s 1 +63967.052 0 +293506.57 6530.0 C57
2023-11-20 13:38:27 S 10 48 50.021 -02 00 56.59 V C57
2023-11-20 13:38:27 s 1 +63110.280 0 +293119.74 8110.0 C57
2023-11-20 13:58:27 S 10 48 52.961 -02 00 26.28 V C57
2023-11-20 13:58:27 s 1 +62252.199 0 +292726.90 2060.0 C57
2023-11-20 14:38:27 S 10 48 58.853 -01 59 25.73 V C57
2023-11-20 14:38:27 s 1 +60532.106 0 +291922.88 6060.0 C57
2023-11-20 15:38:27 S 10 49 07.198 -01 58 00.52 V C57
2023-11-20 15:38:27 s 1 +57942.354 0 +290670.82 9680.0 C57
2023-11-20 16:18:27 S 10 49 13.147 -01 57 01.48 V C57
2023-11-20 16:18:27 s 1 +56209.592 0 +289805.23 8340.0 C57
2023-11-20 16:38:27 S 10 49 15.660 -01 56 35.05 V C57
2023-11-20 16:38:27 s 1 +55341.353 0 +289363.01 3840.0 C57
2023-11-20 16:58:27 S 10 49 18.943 -01 56 00.31 V C57
2023-11-20 16:58:27 s 1 +54471.916 0 +288914.59 30.0 C57
2023-11-20 17:18:27 S 10 49 21.734 -01 55 31.66 V C57
2023-11-20 17:18:27 s 1 +53601.282 0 +288459.91 6620.0 C57
2023-11-20 17:38:27 S 10 49 24.739 -01 55 01.74 V C57
2023-11-20 17:38:27 s 1 +52729.448 0 +287998.85 3280.0 C57
2023-11-20 17:58:27 S 10 49 27.593 -01 54 34.27 V C57
2023-11-20 17:58:27 s 1 +51856.453 0 +287531.52 20.0 C57
2023-11-20 18:18:27 S 10 49 30.674 -01 53 59.50 V C57
2023-11-20 18:18:27 s 1 +50982.302 0 +287057.86 6570.0 C57
2023-11-20 20:58:27 S 10 49 53.707 -01 50 03.26 V C57
2023-11-20 20:58:27 s 1 +43948.983 0 +283037.11 5350.0 C57
2023-11-20 21:58:27 S 10 50 01.937 -01 48 39.17 V C57
2023-11-20 21:58:27 s 1 +41294.080 0 +281421.85 2930.0 C57
2023-11-20 22:38:27 S 10 50 08.155 -01 47 33.86 V C57
2023-11-20 22:38:27 s 1 +39519.191 0 +280311.92 4160.0 C57
2023-11-20 22:58:27 S 10 50 10.522 -01 47 07.94 V C57
2023-11-20 22:58:27 s 1 +38630.312 0 +279746.99 4990.0 C57
2023-11-20 23:18:27 S 10 50 13.150 -01 46 38.24 V C57
2023-11-20 23:18:27 s 1 +37740.498 0 +279175.38 2320.0 C57
2023-11-20 23:58:27 S 10 50 19.318 -01 45 41.51 V C57
2023-11-20 23:58:27 s 1 +35958.108 0 +278011.87 5200.0 C57
2023-11-21 00:18:27 S 10 50 22.090 -01 45 14.33 V C57
2023-11-21 00:18:27 s 1 +35065.580 0 +277420.02 470.0 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)