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
2021-07-27 04:23:59 S 20 17 12.199 +29 31 25.72 V C57
2021-07-27 04:23:59 s 1 +131037.74 3 +290709.57 9760.0 C57
2021-07-27 04:33:59 S 20 17 11.302 +29 31 28.45 V C57
2021-07-27 04:33:59 s 1 +130761.50 1 +291181.29 9290.0 C57
2021-07-27 04:43:59 S 20 17 10.020 +29 31 24.89 V C57
2021-07-27 04:43:59 s 1 +130484.68 2 +291651.74 7160.0 C57
2021-07-27 05:13:59 S 20 17 07.142 +29 31 22.73 V C57
2021-07-27 05:13:59 s 1 +129650.79 3 +293055.54 870.0 C57
2021-07-27 05:23:59 S 20 17 05.765 +29 31 19.49 V C57
2021-07-27 05:23:59 s 1 +129371.69 5 +293520.96 2180.0 C57
2021-07-27 05:33:59 S 20 17 04.399 +29 31 23.81 V C57
2021-07-27 05:33:59 s 1 +129092.03 4 +293985.12 1860.0 C57
2021-07-27 05:53:59 S 20 17 02.381 +29 31 14.70 V C57
2021-07-27 05:53:59 s 1 +128531.03 3 +294909.68 6390.0 C57
2021-07-27 06:03:59 S 20 17 01.222 +29 31 10.92 V C57
2021-07-27 06:03:59 s 1 +128249.69 9 +295370.08 1260.0 C57
2021-07-27 06:13:59 S 20 17 00.497 +29 31 16.82 V C57
2021-07-27 06:13:59 s 1 +127967.81 2 +295829.24 4540.0 C57
2021-07-27 06:43:59 S 20 16 57.230 +29 31 14.45 V C57
2021-07-27 06:43:59 s 1 +127118.86 6 +297199.22 4940.0 C57
2021-07-27 06:53:59 S 20 16 55.898 +29 31 12.83 V C57
2021-07-27 06:53:59 s 1 +126834.79 7 +297653.39 1950.0 C57
2021-07-27 07:23:59 S 20 16 52.387 +29 31 05.74 V C57
2021-07-27 07:23:59 s 1 +125979.36 5 +299008.45 3730.0 C57
2021-07-27 07:33:59 S 20 16 51.677 +29 31 06.92 V C57
2021-07-27 07:33:59 s 1 +125693.15 5 +299457.66 4600.0 C57
2021-07-27 07:43:59 S 20 16 50.124 +29 31 06.71 V C57
2021-07-27 07:43:59 s 1 +125406.41 7 +299905.63 3950.0 C57
2021-07-27 08:33:59 S 20 16 45.276 +29 31 00.66 V C57
2021-07-27 08:33:59 s 1 +123964.88 0 +302127.00 8260.0 C57
2021-07-27 08:43:59 S 20 16 44.273 +29 31 00.19 V C57
2021-07-27 08:43:59 s 1 +123675.02 1 +302567.59 8690.0 C57
2021-07-27 09:03:59 S 20 16 42.115 +29 31 00.16 V C57
2021-07-27 09:03:59 s 1 +123093.77 3 +303445.08 5150.0 C57
2021-07-27 09:23:59 S 20 16 39.646 +29 30 50.58 V C57
2021-07-27 09:23:59 s 1 +122510.49 9 +304317.67 5840.0 C57
2021-07-27 09:43:59 S 20 16 37.812 +29 30 51.37 V C57
2021-07-27 09:43:59 s 1 +121925.22 0 +305185.39 790.0 C57
2021-07-27 10:13:59 S 20 16 34.241 +29 30 49.93 V C57
2021-07-27 10:13:59 s 1 +121043.58 1 +306477.83 7620.0 C57
2021-07-27 11:43:59 S 20 16 24.586 +29 30 36.47 V C57
2021-07-27 11:43:59 s 1 +118372.48 5 +310289.73 3540.0 C57
2021-07-27 12:23:59 S 20 16 20.054 +29 30 29.95 V C57
2021-07-27 12:23:59 s 1 +117173.04 5 +311952.60 1260.0 C57
2021-07-27 12:33:59 S 20 16 18.874 +29 30 27.32 V C57
2021-07-27 12:33:59 s 1 +116872.03 0 +312365.33 9910.0 C57
2021-07-27 13:03:59 S 20 16 15.989 +29 30 29.70 V C57
2021-07-27 13:03:59 s 1 +115966.25 0 +313596.33 8120.0 C57
2021-07-27 13:23:59 S 20 16 13.459 +29 30 25.27 V C57
2021-07-27 13:23:59 s 1 +115360.13 9 +314411.04 3870.0 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)