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
2011-11-03 12:20:52 C 10 40 41.73 -03 13 50.9 o 291
2011-11-03 12:22:21 C 10 40 41.97 -03 13 54.0 o 291
2011-11-10 11:43:56 C 11 09 33.35 -09 19 06.8 c H06
2011-11-10 11:48:12 C 11 09 34.13 -09 19 15.9 c H06
2011-11-15 04:35:09 C 11 30 53.55 -13 38 44.3 t 204
2011-11-15 04:44:23 C 11 30 55.37 -13 39 05.8 t 204
2011-11-15 04:53:54 C 11 30 57.22 -13 39 27.9 t 204
2011-11-16 04:40:39 C 11 35 40.23 -14 34 57.7 t 204
2011-11-16 04:43:26 C 11 35 40.80 -14 35 04.1 t 204
2011-11-16 04:47:02 C 11 35 41.54 -14 35 12.5 t 204
2011-12-06 17:45:43 C 13 33 57.28 -32 16 33.0 u D90
2011-12-06 17:49:40 C 13 33 58.37 -32 16 39.9 u D90
2011-12-06 18:05:29 C 13 34 02.82 -32 17 07.5 u D90
2012-04-18 11:00:38 C 22 16 40.87 +07 04 54.8 c H06
2012-04-18 11:03:54 C 22 16 41.01 +07 04 58.7 c H06
2012-04-18 11:07:10 C 22 16 41.16 +07 05 02.0 c H06
2012-04-18 11:10:26 C 22 16 41.33 +07 05 05.0 c H06
2012-05-21 10:07:31 C 22 51 18.60 +19 30 30.3 o 691
2012-05-21 10:25:48 C 22 51 19.08 +19 30 46.3 o 691
2012-05-21 10:44:06 C 22 51 19.66 +19 31 03.1 o 691
2012-07-24 07:31:34 C 22 39 13.53 +38 26 18.3 u H45
2012-07-24 07:34:18 C 22 39 13.34 +38 26 19.4 u H45
2012-07-24 07:36:06 C 22 39 13.23 +38 26 21.4 u H45
2012-07-24 07:38:07 C 22 39 13.18 +38 26 21.8 u H45
2012-07-24 07:39:42 C 22 39 13.03 +38 26 22.0 u H45
2012-07-24 07:41:24 C 22 39 12.96 +38 26 22.3 u H45
2012-07-26 07:39:31 C 22 36 38.17 +38 46 06.9 u H45
2012-07-26 07:41:31 C 22 36 38.10 +38 46 07.3 u H45
2012-07-26 07:45:10 C 22 36 37.79 +38 46 09.4 u H45
2012-07-26 07:46:50 C 22 36 37.71 +38 46 10.6 u H45
2012-07-26 21:57:01 C 22 35 50.82 +38 51 38.8 t 204
2012-07-26 22:17:12 C 22 35 49.68 +38 51 47.1 t 204
2012-07-26 22:37:24 C 22 35 48.58 +38 51 54.8 t 204
2014-10-01 14:08:12 C 08 02 19.032 +28 19 24.66 L F51
2014-10-01 14:15:50 C 08 02 19.746 +28 19 19.85 L F51
2014-10-01 14:23:25 C 08 02 20.452 +28 19 15.07 L F51
2014-10-01 14:31:02 C 08 02 21.165 +28 19 10.29 L F51
2014-10-18 11:06:27 C 08 41 23.65 +23 03 27.4 q 703
2014-10-18 11:16:41 C 08 41 24.70 +23 03 18.6 q 703
2014-10-18 11:26:56 C 08 41 25.67 +23 03 08.7 q 703
2014-10-18 11:37:07 C 08 41 26.68 +23 02 59.6 q 703
2014-10-24 10:36:35 C 08 55 52.35 +20 36 26.0 q 703
2014-10-24 10:59:45 C 08 55 54.67 +20 36 00.7 q 703
2014-10-24 11:11:22 C 08 55 55.92 +20 35 48.1 q 703
2014-11-19 11:07:02 C 10 07 25.67 +03 59 40.0 q 703
2014-11-19 11:15:48 C 10 07 26.83 +03 59 20.3 q 703
2014-11-19 11:24:34 C 10 07 28.02 +03 59 01.0 q 703
2014-11-19 11:33:22 C 10 07 29.15 +03 58 41.0 q 703
2014-11-28 07:56:45 C 10 38 05.19 -04 54 28.2 17.7 q W95
2014-11-28 08:05:57 C 10 38 06.63 -04 54 53.9 17.8 q W95
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)