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
2021-01-08 18:47:34 C 04 40 32.42 +22 34 17.0 V K83
2021-01-08 18:51:46 C 04 40 31.81 +22 34 07.5 V K83
2021-01-08 18:54:55 C 04 40 31.41 +22 34 00.5 V K83
2021-01-09 06:52:14 C 04 38 56.03 +22 07 57.6 V T05
2021-01-09 06:54:52 C 04 38 55.66 +22 07 51.8 V T05
2021-01-09 07:11:24 C 04 38 52.64 +22 07 11.7 V 703
2021-01-09 07:19:01 C 04 38 51.62 +22 06 54.6 V 703
2021-01-09 07:26:38 C 04 38 50.59 +22 06 37.8 V 703
2021-01-09 07:26:38 C 04 38 51.32 +22 06 42.2 V T05
2021-01-09 07:34:14 C 04 38 49.57 +22 06 20.8 V 703
2021-01-09 07:48:09 C 04 38 48.37 +22 05 55.0 V T05
2021-01-10 06:00:23 C 04 35 53.86 +21 16 50.4 V 703
2021-01-10 06:07:56 C 04 35 52.87 +21 16 33.3 V 703
2021-01-10 06:15:29 C 04 35 51.85 +21 16 16.8 V 703
2021-01-10 06:23:02 C 04 35 50.86 +21 15 59.3 V 703
2021-01-10 21:46:03 C 04 33 52.48 +20 41 41.5 V A16
2021-01-10 22:01:37 C 04 33 50.44 +20 41 06.5 V A16
2021-01-10 22:17:11 C 04 33 48.44 +20 40 31.8 V A16
2021-01-12 19:09:02 C 04 28 13.83 +18 59 38.9 V 130
2021-01-12 19:10:42 C 04 28 13.63 +18 59 35.1 V 130
2021-01-12 19:12:54 C 04 28 13.34 +18 59 30.2 V 130
2021-01-12 19:15:05 C 04 28 13.07 +18 59 25.1 V 130
2021-01-13 02:20:38 C 04 27 20.96 +18 43 41.8 q 834
2021-01-13 03:02:07 C 04 27 15.78 +18 42 07.6 q 834
2021-01-13 09:12:24 C 04 26 31.40 +18 27 54.1 V T05
2021-01-13 09:21:06 C 04 26 30.32 +18 27 34.1 V T05
2021-01-13 09:50:10 C 04 26 26.73 +18 26 27.9 V T05
2021-01-13 13:03:37 C 04 26 04.28 +18 19 06.6 q D29
2021-01-13 13:27:47 C 04 26 01.31 +18 18 11.4 q D29
2021-01-13 13:51:59 C 04 25 58.33 +18 17 16.4 q D29
2021-01-13 17:30:59 C 04 25 33.04 +18 08 55.4 V G17
2021-01-13 17:33:58 C 04 25 32.69 +18 08 48.6 V G17
2021-01-13 17:36:59 C 04 25 32.33 +18 08 41.9 V G17
2021-01-14 05:57:24 C 04 24 04.34 +17 40 41.0 V 703
2021-01-14 06:05:20 C 04 24 03.39 +17 40 22.8 V 703
2021-01-14 06:13:16 C 04 24 02.50 +17 40 04.5 V 703
2021-01-14 06:21:13 C 04 24 01.45 +17 39 47.4 V 703
2021-01-14 21:28:02 C 04 22 16.77 +17 05 16.6 o K88
2021-01-14 21:29:09 C 04 22 16.64 +17 05 14.0 o K88
2021-01-14 21:30:15 C 04 22 16.51 +17 05 11.5 o K88
2021-01-15 19:03:21 C 04 19 51.00 +16 16 02.7 V K83
2021-01-15 19:07:33 C 04 19 50.51 +16 15 53.2 V K83
2021-01-15 19:11:45 C 04 19 50.06 +16 15 43.9 V K83
2021-01-16 20:42:39 C 04 17 02.24 +15 17 30.7 V J27
2021-01-16 20:51:34 C 04 17 01.23 +15 17 10.2 V J27
2021-01-16 20:57:55 C 04 17 00.52 +15 16 55.8 V J27
2021-01-17 07:39:19 C 04 15 51.85 +14 52 38.2 V T05
2021-01-17 07:44:36 C 04 15 51.27 +14 52 26.2 V T05
2021-01-17 07:52:29 C 04 15 50.40 +14 52 08.1 V T05
2021-01-17 08:06:50 C 04 15 48.81 +14 51 35.3 V T05
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)