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
2018-01-05 12:24:38 C 08 38 18.74 -30 44 29.5 U T08
2018-01-17 13:20:06 C 07 56 16.42 -66 13 07.3 u 423
2018-01-17 13:25:56 C 07 56 14.54 -66 13 44.6 u 423
2018-01-18 12:26:00 C 07 48 37.54 -68 37 07.7 u 423
2018-01-18 12:49:20 C 07 48 28.69 -68 39 30.4 u 423
2018-01-18 13:40:58 C 07 48 08.95 -68 44 45.1 u 423
2018-01-18 18:59:01 S 07 46 11.206 -69 16 24.31 L C51
2018-01-18 18:59:12 S 07 46 11.225 -69 16 25.64 L C51
2018-01-18 22:07:42 S 07 44 58.898 -69 35 13.81 L C51
2018-01-19 12:16:03 C 07 39 11.30 -70 58 33.0 u 423
2018-01-19 12:42:01 C 07 38 59.44 -71 01 03.7 u 423
2018-01-19 13:12:38 C 07 38 45.45 -71 04 00.7 u 423
2018-05-15 10:43:12 C 22 34 10.65 +03 23 07.3 U 703
2018-05-15 10:47:39 C 22 34 10.74 +03 23 15.0 U 703
2018-05-15 10:52:05 C 22 34 10.80 +03 23 21.4 U 703
2018-05-15 10:56:31 C 22 34 10.96 +03 23 29.2 U 703
2018-05-20 10:35:49 C 22 36 05.53 +06 23 23.5 U 703
2018-05-20 10:42:50 C 22 36 05.63 +06 23 33.5 U 703
2018-05-20 10:49:51 C 22 36 05.73 +06 23 44.1 U 703
2018-05-20 10:56:53 C 22 36 05.81 +06 23 54.3 U 703
2018-06-04 10:12:48 C 22 37 06.50 +14 54 04.8 U 703
2018-06-04 10:22:11 C 22 37 06.39 +14 54 18.1 U 703
2018-06-04 10:31:35 C 22 37 06.33 +14 54 30.6 U 703
2018-06-04 10:41:00 C 22 37 06.25 +14 54 43.8 U 703
2018-06-06 01:23:39 S 22 36 43.43 +15 46 51.8 L C51
2018-06-06 04:32:10 S 22 36 41.34 +15 51 03.5 L C51
2018-06-06 07:40:40 S 22 36 39.20 +15 55 15.5 L C51
2018-06-06 10:48:59 S 22 36 37.08 +15 59 26.9 L C51
2018-06-06 12:23:14 S 22 36 35.88 +16 01 32.7 L C51
2018-06-09 11:03:46 S 22 35 35.74 +17 34 46.3 L C51
2018-06-09 14:12:16 S 22 35 32.58 +17 38 52.2 L C51
2018-06-09 17:20:35 S 22 35 29.43 +17 42 56.9 L C51
2018-06-09 17:20:46 S 22 35 29.354 +17 42 57.82 L C51
2018-06-09 20:29:05 S 22 35 26.110 +17 47 02.54 L C51
2018-06-09 22:03:20 S 22 35 24.47 +17 49 04.9 L C51
2018-06-09 23:37:35 S 22 35 22.819 +17 51 06.95 L C51
2018-06-10 01:11:50 S 22 35 21.14 +17 53 09.8 L C51
2018-06-10 02:45:54 S 22 35 19.474 +17 55 11.64 L C51
2018-06-10 02:46:05 S 22 35 19.44 +17 55 11.5 L C51
2018-06-10 04:20:09 S 22 35 17.78 +17 57 13.8 L C51
2018-06-10 04:20:21 S 22 35 17.74 +17 57 13.2 L C51
2018-06-10 05:54:24 S 22 35 16.04 +17 59 15.8 L C51
2018-06-10 07:28:39 S 22 35 14.36 +18 01 17.5 L C51
2018-06-10 09:33:55 C 22 35 12.74 +18 03 58.1 U 703
2018-06-10 09:41:28 C 22 35 12.54 +18 04 08.4 U 703
2018-06-10 09:48:35 C 22 35 12.43 +18 04 17.8 U G96
2018-06-10 09:49:01 C 22 35 12.42 +18 04 18.0 U 703
2018-06-10 09:56:09 C 22 35 12.28 +18 04 27.6 U G96
2018-06-10 09:56:33 C 22 35 12.27 +18 04 27.9 U 703
2018-06-10 10:03:44 C 22 35 12.14 +18 04 37.3 U G96
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)