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
2024-08-10 10:28:30 C 17 46 56.261 +14 58 47.86 V T08
2024-08-10 10:56:18 C 17 46 57.444 +14 58 40.98 V T08
2024-08-10 12:51:33 C 17 47 03.28 +14 58 11.7 V D29
2024-08-10 13:11:55 C 17 47 04.09 +14 58 07.6 V D29
2024-08-10 13:32:17 C 17 47 04.97 +14 58 01.9 V D29
2024-08-11 18:08:49 C 17 48 21.81 +14 51 00.3 V C40
2024-08-11 18:11:37 C 17 48 21.92 +14 50 59.5 V C40
2024-08-11 18:14:24 C 17 48 22.04 +14 50 58.8 V C40
2024-08-11 18:17:11 C 17 48 22.16 +14 50 58.3 V C40
2024-08-11 18:19:59 C 17 48 22.27 +14 50 57.6 V C40
2024-08-11 18:22:46 C 17 48 22.41 +14 50 56.8 V C40
2024-08-11 18:25:33 C 17 48 22.51 +14 50 56.1 V C40
2024-08-11 18:28:21 C 17 48 22.63 +14 50 55.4 V C40
2024-08-11 18:31:08 C 17 48 22.74 +14 50 54.8 V C40
2024-08-11 18:33:56 C 17 48 22.86 +14 50 54.1 V C40
2024-08-11 18:36:44 C 17 48 22.99 +14 50 53.5 V C40
2024-08-11 18:39:31 C 17 48 23.10 +14 50 52.7 V C40
2024-08-11 19:51:25 C 17 48 26.33 +14 50 34.4 X G02
2024-08-11 19:58:09 C 17 48 26.63 +14 50 32.5 X G02
2024-08-11 20:04:18 C 17 48 26.89 +14 50 30.7 X G02
2024-08-11 20:18:26 B 17 48 27.472 +14 50 28.77 V L92
2024-08-11 20:28:32 B 17 48 27.840 +14 50 27.11 V L92
2024-08-11 20:38:38 B 17 48 28.323 +14 50 23.49 V L92
2024-08-11 20:48:35 C 17 48 28.889 +14 50 19.39 Z C23
2024-08-11 21:45:58 C 17 48 31.294 +14 50 05.35 Z C23
2024-08-11 23:19:32 C 17 48 35.285 +14 49 40.94 Z C23
2024-08-12 12:47:38 C 17 49 11.83 +14 46 24.0 V D29
2024-08-12 12:59:05 C 17 49 12.32 +14 46 21.0 V D29
2024-08-12 13:07:59 C 17 49 12.70 +14 46 18.8 V D29
2024-08-12 13:19:27 C 17 49 13.18 +14 46 15.8 V D29
2024-08-12 18:02:06 C 17 49 25.96 +14 45 02.5 V C40
2024-08-12 18:04:53 C 17 49 26.07 +14 45 01.8 V C40
2024-08-12 18:07:42 C 17 49 26.20 +14 45 01.1 V C40
2024-08-12 18:10:29 C 17 49 26.29 +14 45 00.6 V C40
2024-08-12 18:13:16 C 17 49 26.40 +14 44 59.8 V C40
2024-08-12 18:16:04 C 17 49 26.56 +14 44 59.0 V C40
2024-08-12 18:18:51 C 17 49 26.66 +14 44 58.4 V C40
2024-08-12 18:21:38 C 17 49 26.78 +14 44 57.6 V C40
2024-08-12 21:52:43 C 17 49 36.017 +14 44 03.98 q L05
2024-08-12 22:55:10 C 17 49 38.664 +14 43 47.82 q L05
2024-08-12 23:10:28 C 17 49 39.319 +14 43 44.11 q L05
2024-08-13 07:49:41 C 17 50 02.875 +14 41 37.71 X F51
2024-08-13 08:06:15 C 17 50 03.549 +14 41 33.44 X F51
2024-08-13 08:22:52 C 17 50 04.245 +14 41 29.17 X F51
2024-08-13 08:39:21 C 17 50 04.936 +14 41 24.89 X F51
2024-08-13 20:15:42 B 17 50 36.429 +14 38 23.46 V L92
2024-08-13 20:19:45 B 17 50 36.551 +14 38 21.41 V L92
2024-08-13 20:23:47 B 17 50 36.672 +14 38 20.22 V L92
2024-08-13 20:26:49 B 17 50 36.932 +14 38 20.88 V L92
2024-08-13 20:32:53 B 17 50 37.152 +14 38 19.51 V L92
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)