415029 (2011 UL21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6537389222 ± 3.55e-09
Semi-major axis (a)2.1223846854 AU ± 1.41e-09
Inclination (i)34.88596290° ± 1.62e-06
Long. of Asc. Node (Ω)275.31456377° ± 3.69e-07
Arg. of Perihelion (ω)284.98018604° ± 9.13e-07
Mean Anomaly (M)177.74570784° ± 2.01e-07
Mean Motion (n)0.3187690303°/day ± 3.18e-10
Perihelion dist (q)0.73489921 AU ± 7.55e-09
Aphelion dist (Q)3.50987016 AU ± 7.89e-09
Orbital Period3.09197629 yr ± 3.09e-09
Physical Parameters
H (abs. magnitude)15.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.218″
Uncertainty0
Orbit TypeApollo
MOID0.015855 AU
Observations Used3235
Radar Obs Used3
Oppositions24
Arc Total1989-2024
First Observation Used1989-10-29
Last Observation Used2024-09-28
Observations (4304)
Date Type RA Dec Mag Band Observatory
2021-07-31 05:43:59 s 1 -72132.530 0 +383152.76 410.0 C57
2021-07-31 05:53:59 S 20 07 23.580 +29 15 40.54 V C57
2021-07-31 05:53:59 s 1 -72485.838 0 +383027.68 3370.0 C57
2021-07-31 06:03:59 S 20 07 22.397 +29 15 41.26 V C57
2021-07-31 06:03:59 s 1 -72838.979 0 +382901.67 5700.0 C57
2021-07-31 06:13:59 S 20 07 21.264 +29 15 38.84 V C57
2021-07-31 06:13:59 s 1 -73191.953 0 +382774.73 7410.0 C57
2021-07-31 06:23:59 S 20 07 20.462 +29 15 32.69 V C57
2021-07-31 06:23:59 s 1 -73544.759 0 +382646.87 8480.0 C57
2021-07-31 06:43:59 S 20 07 19.020 +29 15 32.98 V C57
2021-07-31 06:43:59 s 1 -74249.861 0 +382388.36 8730.0 C57
2021-07-31 07:03:59 S 20 07 16.697 +29 15 32.69 V C57
2021-07-31 07:03:59 s 1 -74954.279 0 +382126.15 6410.0 C57
2021-07-31 07:53:59 S 20 07 12.101 +29 15 19.66 V C57
2021-07-31 07:53:59 s 1 -76712.279 0 +381454.42 9260.0 C57
2021-07-31 08:13:59 S 20 07 10.738 +29 15 17.93 V C57
2021-07-31 08:13:59 s 1 -77414.241 0 +381179.24 7800.0 C57
2021-07-31 08:23:59 S 20 07 09.456 +29 15 16.38 V C57
2021-07-31 08:23:59 s 1 -77764.953 0 +381040.26 1070.0 C57
2021-07-31 08:53:59 S 20 07 06.682 +29 15 09.83 V C57
2021-07-31 08:53:59 s 1 -78816.003 0 +380617.76 6850.0 C57
2021-07-31 09:03:59 S 20 07 05.491 +29 15 04.07 V C57
2021-07-31 09:03:59 s 1 -79165.987 0 +380475.07 7430.0 C57
2021-07-31 09:53:59 S 20 07 01.140 +29 14 56.40 V C57
2021-07-31 09:53:59 s 1 -80913.121 0 +379747.73 30.0 C57
2021-07-31 10:33:59 S 20 06 57.562 +29 14 46.10 V C57
2021-07-31 10:33:59 s 1 -82307.428 0 +379149.15 1600.0 C57
2021-07-31 11:53:59 S 20 06 50.050 +29 14 28.97 V C57
2021-07-31 11:53:59 s 1 -85086.710 0 +377907.46 550.0 C57
2021-07-31 12:23:59 S 20 06 47.417 +29 14 23.89 V C57
2021-07-31 12:23:59 s 1 -86125.652 0 +377426.50 1910.0 C57
2021-07-31 13:43:59 S 20 06 40.109 +29 14 10.93 V C57
2021-07-31 13:43:59 s 1 -88887.122 0 +376103.06 6000.0 C57
2021-07-31 14:43:59 S 20 06 34.829 +29 13 56.06 V C57
2021-07-31 14:43:59 s 1 -90949.356 0 +375071.41 1980.0 C57
2021-07-31 15:03:59 S 20 06 32.659 +29 13 50.88 V C57
2021-07-31 15:03:59 s 1 -91635.036 0 +374720.09 1060.0 C57
2021-07-31 15:33:59 S 20 06 30.002 +29 13 42.82 V C57
2021-07-31 15:33:59 s 1 -92661.904 0 +374186.11 8740.0 C57
2021-07-31 15:53:59 S 20 06 28.277 +29 13 39.25 V C57
2021-07-31 15:53:59 s 1 -93345.369 0 +373825.47 9860.0 C57
2021-07-31 16:03:59 S 20 06 27.410 +29 13 41.88 V C57
2021-07-31 16:03:59 s 1 -93686.765 0 +373643.76 9220.0 C57
2021-07-31 16:23:59 S 20 06 25.169 +29 13 37.56 V C57
2021-07-31 16:23:59 s 1 -94368.879 0 +373277.52 5490.0 C57
2021-07-31 17:33:59 S 20 06 18.799 +29 13 14.38 V C57
2021-07-31 17:33:59 s 1 -96749.039 0 +371966.34 6550.0 C57
2021-07-31 21:33:59 S 20 05 57.331 +29 12 31.28 V C57
2021-07-31 21:33:59 s 1 -104819.87 5 +367123.24 4140.0 C57
2021-07-31 21:53:59 S 20 05 55.910 +29 12 23.04 V C57
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-06-26 23:40:00 46095708 20 us 8560 -14 -14
2024-06-27 00:10:00 46009798 2 us 8560 -14 -14
2024-06-29 02:00:00 47980230.07 3 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)