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
2021-07-28 01:23:59 S 20 14 56.978 +29 28 54.98 V C57
2021-07-28 01:23:59 s 1 +92475.597 0 +340648.06 390.0 C57
2021-07-28 01:43:59 S 20 14 55.181 +29 28 48.94 V C57
2021-07-28 01:43:59 s 1 +91813.848 0 +341293.08 1310.0 C57
2021-07-28 01:53:59 S 20 14 53.748 +29 28 49.91 V C57
2021-07-28 01:53:59 s 1 +91482.510 0 +341613.93 5510.0 C57
2021-07-28 02:33:59 S 20 14 49.555 +29 28 46.34 V C57
2021-07-28 02:33:59 s 1 +90154.104 0 +342886.28 4030.0 C57
2021-07-28 02:43:59 S 20 14 48.482 +29 28 46.60 V C57
2021-07-28 02:43:59 s 1 +89821.248 0 +343201.62 4110.0 C57
2021-07-28 03:03:59 S 20 14 46.248 +29 28 43.07 V C57
2021-07-28 03:03:59 s 1 +89154.639 0 +343828.99 1850.0 C57
2021-07-28 03:43:59 S 20 14 42.466 +29 28 32.02 V C57
2021-07-28 03:43:59 s 1 +87817.886 0 +345070.56 7770.0 C57
2021-07-28 03:53:59 S 20 14 40.975 +29 28 32.56 V C57
2021-07-28 03:53:59 s 1 +87482.970 0 +345378.21 2280.0 C57
2021-07-28 04:03:59 S 20 14 39.823 +29 28 30.43 V C57
2021-07-28 04:03:59 s 1 +87147.766 0 +345684.77 6020.0 C57
2021-07-28 04:13:59 S 20 14 39.310 +29 28 30.25 V C57
2021-07-28 04:13:59 s 1 +86812.275 0 +345990.24 8990.0 C57
2021-07-28 04:23:59 S 20 14 38.261 +29 28 26.54 V C57
2021-07-28 04:23:59 s 1 +86476.500 0 +346294.62 1190.0 C57
2021-07-28 04:33:59 S 20 14 37.025 +29 28 29.03 V C57
2021-07-28 04:33:59 s 1 +86140.441 0 +346597.90 2630.0 C57
2021-07-28 05:03:59 S 20 14 34.106 +29 28 17.87 V C57
2021-07-28 05:03:59 s 1 +85130.578 0 +347501.23 2420.0 C57
2021-07-28 05:43:59 S 20 14 29.887 +29 28 19.63 V C57
2021-07-28 05:43:59 s 1 +83780.219 0 +348690.45 1750.0 C57
2021-07-28 06:03:59 S 20 14 27.610 +29 28 17.08 V C57
2021-07-28 06:03:59 s 1 +83103.405 0 +349278.56 2050.0 C57
2021-07-28 06:33:59 S 20 14 24.478 +29 28 11.64 V C57
2021-07-28 06:33:59 s 1 +82086.173 0 +350152.62 2140.0 C57
2021-07-28 06:43:59 S 20 14 23.614 +29 28 10.31 V C57
2021-07-28 06:43:59 s 1 +81746.566 0 +350441.81 4090.0 C57
2021-07-28 07:13:59 S 20 14 20.527 +29 28 04.80 V C57
2021-07-28 07:13:59 s 1 +80726.174 0 +351302.92 5780.0 C57
2021-07-28 09:53:59 S 20 14 03.293 +29 27 46.26 V C57
2021-07-28 09:53:59 s 1 +75245.758 0 +355732.64 3540.0 C57
2021-07-28 11:03:59 S 20 13 56.856 +29 27 27.47 V C57
2021-07-28 11:03:59 s 1 +72828.752 0 +357584.95 2570.0 C57
2021-07-28 11:53:59 S 20 13 51.146 +29 27 20.45 V C57
2021-07-28 11:53:59 s 1 +71095.500 0 +358876.33 9910.0 C57
2021-07-28 12:13:59 S 20 13 49.236 +29 27 19.48 V C57
2021-07-28 12:13:59 s 1 +70400.651 0 +359385.51 2850.0 C57
2021-07-28 12:43:59 S 20 13 45.876 +29 27 18.83 V C57
2021-07-28 12:43:59 s 1 +69356.752 0 +360141.39 3080.0 C57
2021-07-28 13:43:59 S 20 13 40.159 +29 27 11.41 V C57
2021-07-28 13:43:59 s 1 +67263.232 0 +361624.88 8910.0 C57
2021-07-28 15:03:59 S 20 13 31.632 +29 26 58.74 V C57
2021-07-28 15:03:59 s 1 +64460.408 0 +363544.42 880.0 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)