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
2021-07-24 19:49:06 C 20 24 10.84 +29 33 02.1 Y N42
2021-07-24 19:51:23 C 20 24 10.58 +29 33 02.2 Y N42
2021-07-24 19:53:41 C 20 24 10.28 +29 33 01.9 Y N42
2021-07-24 19:53:59 S 20 23 48.854 +29 35 12.41 V C57
2021-07-24 19:53:59 s 1 +157270.26 5 +46085.913 3390.0 C57
2021-07-24 19:55:58 C 20 24 10.02 +29 33 02.0 Y N42
2021-07-24 19:58:16 C 20 24 09.70 +29 33 03.9 Y N42
2021-07-24 20:00:33 C 20 24 09.40 +29 33 02.9 Y N42
2021-07-24 20:02:50 C 20 24 09.20 +29 33 02.5 Y N42
2021-07-24 20:05:08 C 20 24 08.96 +29 33 02.7 Y N42
2021-07-24 20:07:25 C 20 24 08.71 +29 33 03.0 Y N42
2021-07-24 20:09:42 C 20 24 08.41 +29 33 03.6 Y N42
2021-07-24 20:12:00 C 20 24 08.13 +29 33 03.3 Y N42
2021-07-24 20:13:59 S 20 23 46.524 +29 35 09.92 V C57
2021-07-24 20:13:59 s 1 +157890.36 8 +48071.787 4120.0 C57
2021-07-24 20:14:17 C 20 24 07.84 +29 33 03.1 Y N42
2021-07-24 20:16:35 C 20 24 07.60 +29 33 03.2 Y N42
2021-07-24 20:18:52 C 20 24 07.29 +29 33 03.2 Y N42
2021-07-24 20:21:09 C 20 24 06.98 +29 33 03.9 Y N42
2021-07-24 20:23:27 C 20 24 06.75 +29 33 03.3 Y N42
2021-07-24 20:25:44 C 20 24 06.52 +29 33 03.0 Y N42
2021-07-24 20:28:01 C 20 24 06.15 +29 33 05.6 Y N42
2021-07-24 20:30:19 C 20 24 05.89 +29 33 03.6 Y N42
2021-07-24 20:32:37 C 20 24 05.69 +29 33 03.8 Y N42
2021-07-24 20:33:59 S 20 23 44.006 +29 35 08.88 V C57
2021-07-24 20:33:59 s 1 +158492.68 7 +50052.210 9830.0 C57
2021-07-24 20:34:54 C 20 24 05.42 +29 33 03.7 Y N42
2021-07-24 20:37:12 C 20 24 05.13 +29 33 03.9 Y N42
2021-07-24 20:39:28 C 20 24 04.91 +29 33 04.1 Y N42
2021-07-24 20:41:47 C 20 24 04.61 +29 33 04.0 Y N42
2021-07-24 20:44:04 C 20 24 04.33 +29 33 04.0 Y N42
2021-07-24 20:46:21 C 20 24 04.08 +29 33 04.2 Y N42
2021-07-24 20:48:39 C 20 24 03.81 +29 33 04.2 Y N42
2021-07-24 20:50:56 C 20 24 03.52 +29 33 04.3 Y N42
2021-07-24 20:53:14 C 20 24 03.27 +29 33 04.3 Y N42
2021-07-24 20:55:32 C 20 24 02.91 +29 33 04.6 Y N42
2021-07-25 00:53:59 S 20 23 11.381 +29 35 09.64 V C57
2021-07-25 00:53:59 s 1 +164828.12 0 +75259.211 240.0 C57
2021-07-25 01:03:59 S 20 23 10.015 +29 35 08.74 V C57
2021-07-25 01:03:59 s 1 +165020.47 2 +76207.535 2530.0 C57
2021-07-25 01:13:59 S 20 23 08.964 +29 35 09.17 V C57
2021-07-25 01:13:59 s 1 +165209.29 6 +77154.222 3970.0 C57
2021-07-25 01:33:59 S 20 23 06.360 +29 35 06.25 V C57
2021-07-25 01:33:59 s 1 +165576.46 9 +79042.667 4630.0 C57
2021-07-25 01:43:59 S 20 23 05.028 +29 35 09.13 V C57
2021-07-25 01:43:59 s 1 +165754.87 1 +79984.413 4030.0 C57
2021-07-25 01:53:59 S 20 23 03.811 +29 35 09.10 V C57
2021-07-25 01:53:59 s 1 +165929.85 4 +80924.503 2920.0 C57
2021-07-25 02:03:59 S 20 23 02.285 +29 35 00.78 V C57
2021-07-25 02:03:59 s 1 +166101.44 1 +81862.931 1370.0 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)