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
2024-07-13 19:52:22 C 17 08 28.368 +14 58 48.43 X M26
2024-07-13 20:00:30 C 17 08 29.179 +14 58 53.54 X M26
2024-07-13 20:05:40 C 17 08 28.86 +14 58 56.3 V C40
2024-07-13 20:08:27 C 17 08 29.14 +14 58 58.0 V C40
2024-07-13 20:09:14 C 17 08 30.077 +14 58 58.91 X M26
2024-07-13 20:11:15 C 17 08 29.42 +14 58 59.7 V C40
2024-07-13 20:14:02 C 17 08 29.70 +14 59 01.4 V C40
2024-07-13 20:16:50 C 17 08 29.98 +14 59 03.2 V C40
2024-07-13 20:19:38 C 17 08 30.27 +14 59 04.8 V C40
2024-07-13 20:22:25 C 17 08 30.55 +14 59 06.5 V C40
2024-07-13 20:25:12 C 17 08 30.83 +14 59 08.2 V C40
2024-07-13 20:28:00 C 17 08 31.11 +14 59 09.9 V C40
2024-07-13 20:30:47 C 17 08 31.40 +14 59 11.5 V C40
2024-07-13 20:33:35 C 17 08 31.68 +14 59 13.2 V C40
2024-07-13 20:36:22 C 17 08 31.96 +14 59 14.9 V C40
2024-07-13 21:37:58 B 17 08 38.790 +14 59 55.86 V L92
2024-07-13 21:38:17 C 17 08 38.107 +15 00 00.09 W M01
2024-07-13 21:40:00 B 17 08 38.952 +14 59 57.48 V L92
2024-07-13 21:42:03 B 17 08 39.197 +14 59 58.23 V L92
2024-07-13 21:44:05 B 17 08 39.406 +14 59 59.44 V L92
2024-07-13 21:46:07 B 17 08 39.615 +15 00 00.94 V L92
2024-07-13 21:48:09 B 17 08 39.780 +15 00 01.92 V L92
2024-07-13 21:50:12 B 17 08 40.026 +15 00 03.12 V L92
2024-07-13 21:52:14 B 17 08 40.227 +15 00 04.89 V L92
2024-07-13 21:54:17 B 17 08 40.429 +15 00 05.61 V L92
2024-07-13 21:56:19 B 17 08 40.630 +15 00 06.75 V L92
2024-07-13 21:58:21 B 17 08 40.831 +15 00 08.09 V L92
2024-07-13 22:00:24 B 17 08 41.025 +15 00 09.30 V L92
2024-07-13 22:02:26 B 17 08 41.227 +15 00 10.57 V L92
2024-07-13 22:04:28 B 17 08 41.420 +15 00 11.76 V L92
2024-07-13 22:06:31 B 17 08 41.615 +15 00 13.13 V L92
2024-07-13 22:08:33 B 17 08 41.827 +15 00 14.13 V L92
2024-07-13 22:10:35 B 17 08 42.011 +15 00 15.65 V L92
2024-07-13 22:12:37 B 17 08 42.255 +15 00 16.57 V L92
2024-07-13 22:14:40 B 17 08 42.458 +15 00 17.67 V L92
2024-07-13 22:16:42 B 17 08 42.661 +15 00 19.39 V L92
2024-07-14 03:51:17 B 17 09 18.502 +15 03 33.52 X H89
2024-07-14 04:55:39 B 17 09 24.811 +15 04 10.00 X H89
2024-07-14 05:56:06 B 17 09 30.782 +15 04 43.34 X H89
2024-07-14 18:36:29 C 17 10 49.750 +15 11 45.76 W M01
2024-07-14 19:35:36 C 17 10 55.01 +15 12 08.2 V C40
2024-07-14 19:38:23 C 17 10 55.27 +15 12 09.7 V C40
2024-07-14 19:41:11 C 17 10 55.52 +15 12 11.1 V C40
2024-07-14 19:43:58 C 17 10 55.78 +15 12 12.5 V C40
2024-07-14 19:46:47 C 17 10 56.04 +15 12 13.8 V C40
2024-07-14 19:46:58 C 17 10 56.57 +15 12 11.6 X G02
2024-07-14 19:49:35 C 17 10 56.30 +15 12 15.3 V C40
2024-07-14 19:51:27 C 17 10 57.05 +15 12 14.5 X G02
2024-07-14 19:52:21 C 17 10 56.55 +15 12 16.7 V C40
2024-07-14 19:55:09 C 17 10 56.81 +15 12 18.1 V C40
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)