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
1989-10-29 09:45:00 06 08 39.65 +48 07 48.6 o 261
1989-10-29 10:54:59 06 08 38.79 +48 07 56.7 o 261
1990-07-27 05:35:59 18 29 26.22 +20 42 42.0 o 261
1990-07-27 06:35:59 18 29 23.69 +20 42 25.9 o 261
2011-10-17 11:35:07 C 09 40 28.30 +09 11 16.5 r 703
2011-10-17 11:40:55 C 09 40 29.13 +09 11 06.3 r 703
2011-10-17 11:46:40 C 09 40 29.85 +09 10 57.5 r 703
2011-10-17 11:52:29 C 09 40 30.68 +09 10 48.2 r 703
2011-10-17 12:11:08 C 09 40 33.15 +09 10 20.1 r 703
2011-10-17 12:11:57 C 09 40 33.24 +09 10 18.1 r 703
2011-10-17 12:12:47 C 09 40 33.39 +09 10 17.9 r 703
2011-10-17 12:13:38 C 09 40 33.50 +09 10 15.9 r 703
2011-10-18 03:49:22 C 09 42 39.23 +08 45 53.0 t 204
2011-10-18 03:59:26 C 09 42 40.59 +08 45 37.4 t 204
2011-10-18 04:09:32 C 09 42 41.95 +08 45 21.3 t 204
2011-10-18 10:56:47 C 09 43 37.20 +08 34 39.5 c 854
2011-10-18 11:00:42 C 09 43 37.63 +08 34 32.9 c 854
2011-10-18 11:04:36 C 09 43 38.05 +08 34 28.3 c 854
2011-10-18 14:50:07 C 09 44 08.61 +08 28 32.0 o F65
2011-10-18 14:51:17 C 09 44 08.77 +08 28 30.1 o F65
2011-10-18 14:52:26 C 09 44 08.93 +08 28 28.4 o F65
2011-10-18 14:53:31 C 09 44 09.08 +08 28 26.5 o F65
2011-10-18 14:54:41 C 09 44 09.23 +08 28 24.9 o F65
2011-10-18 14:55:52 C 09 44 09.40 +08 28 23.0 o F65
2011-10-18 14:57:03 C 09 44 09.55 +08 28 21.1 o F65
2011-10-18 14:58:13 C 09 44 09.71 +08 28 19.1 o F65
2011-10-18 14:59:24 C 09 44 09.86 +08 28 17.2 o F65
2011-10-18 15:00:34 C 09 44 10.02 +08 28 15.3 o F65
2011-10-18 15:01:44 C 09 44 10.18 +08 28 13.6 o F65
2011-10-18 15:02:54 C 09 44 10.33 +08 28 11.8 o F65
2011-10-19 03:50:32 C 09 45 54.48 +08 07 44.5 u 118
2011-10-19 03:51:40 C 09 45 54.61 +08 07 41.5 u 118
2011-10-19 03:56:12 C 09 45 55.19 +08 07 35.4 u 118
2011-10-19 03:57:20 C 09 45 55.42 +08 07 33.3 u 118
2011-10-19 04:09:47 C 09 45 57.02 +08 07 14.1 u 118
2011-10-19 11:15:06 C 09 46 55.23 +07 55 51.4 c H06
2011-10-19 11:18:48 C 09 46 55.71 +07 55 45.4 c H06
2011-10-19 11:22:30 C 09 46 56.18 +07 55 39.5 c H06
2011-10-19 12:15:12 C 09 47 03.36 +07 54 14.3 o 291
2011-10-19 12:17:18 C 09 47 03.65 +07 54 11.0 o 291
2011-10-19 12:19:23 C 09 47 03.93 +07 54 07.8 o 291
2011-10-20 10:37:26 C 09 50 07.64 +07 17 46.7 u H36
2011-10-20 10:48:52 C 09 50 09.18 +07 17 27.9 u H36
2011-10-20 11:00:18 C 09 50 10.78 +07 17 09.0 u H36
2011-10-20 11:11:45 C 09 50 12.34 +07 16 50.3 u H36
2011-10-20 14:41:17 C 09 50 41.32 +07 11 06.8 r F65
2011-10-20 14:43:45 C 09 50 41.66 +07 11 02.7 r F65
2011-10-21 09:41:26 C 09 53 19.46 +06 39 29.9 t H21
2011-10-21 09:47:07 C 09 53 20.24 +06 39 20.5 t H21
2011-10-21 09:52:47 C 09 53 21.03 +06 39 10.9 t H21
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)