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
2024-09-02 01:58:58 C 18 12 13.798 +12 32 34.04 V W68
2024-09-02 02:22:54 C 18 12 14.940 +12 32 27.56 V W68
2024-09-03 02:58:56 C 18 13 28.27 +12 25 36.6 X V44
2024-09-03 03:10:47 C 18 13 28.84 +12 25 33.4 X V44
2024-09-03 03:22:01 C 18 13 29.37 +12 25 30.3 X V44
2024-09-04 02:39:28 B 18 14 39.10 +12 19 11.9 X V44
2024-09-04 02:43:35 B 18 14 39.31 +12 19 10.7 X V44
2024-09-04 02:47:24 B 18 14 39.50 +12 19 09.7 X V44
2024-09-06 18:34:03 C 18 17 52.21 +12 02 05.0 V C40
2024-09-06 18:42:55 C 18 17 52.68 +12 02 02.7 V C40
2024-09-06 18:47:21 C 18 17 52.90 +12 02 01.1 V C40
2024-09-06 18:51:47 C 18 17 53.10 +12 01 59.7 V C40
2024-09-06 18:56:13 C 18 17 53.34 +12 01 59.1 V C40
2024-09-06 19:00:40 C 18 17 53.51 +12 01 58.1 V C40
2024-09-06 19:13:23 C 18 17 54.21 +12 01 54.1 V C40
2024-09-09 08:02:14 C 18 21 00.938 +11 46 03.14 V T05
2024-09-09 08:27:09 C 18 21 02.179 +11 45 56.56 V T05
2024-09-09 08:31:44 C 18 21 02.422 +11 45 55.22 V T05
2024-09-09 08:47:06 C 18 21 03.214 +11 45 51.26 V T05
2024-09-09 18:32:30 C 18 21 33.64 +11 43 18.0 V C40
2024-09-09 18:41:22 C 18 21 34.03 +11 43 15.0 V C40
2024-09-09 18:50:14 C 18 21 34.52 +11 43 13.6 V C40
2024-09-09 18:59:05 C 18 21 34.90 +11 43 11.2 V C40
2024-09-09 19:03:31 C 18 21 35.16 +11 43 09.8 V C40
2024-09-09 19:19:57 C 18 21 36.00 +11 43 05.8 V C40
2024-09-14 17:56:37 C 18 27 49.23 +11 13 26.7 V C40
2024-09-14 18:18:46 C 18 27 50.40 +11 13 20.8 V C40
2024-09-14 18:40:56 C 18 27 51.52 +11 13 15.1 V C40
2024-09-15 17:53:00 C 18 29 05.75 +11 07 41.4 V C40
2024-09-15 18:07:47 C 18 29 06.54 +11 07 38.1 V C40
2024-09-15 18:22:33 C 18 29 07.27 +11 07 33.6 V C40
2024-09-19 16:55:36 C 18 34 13.22 +10 45 34.8 V C40
2024-09-19 16:58:39 C 18 34 13.33 +10 45 34.0 V C40
2024-09-19 17:04:43 C 18 34 13.72 +10 45 31.9 V C40
2024-09-19 17:07:46 C 18 34 13.87 +10 45 31.6 V C40
2024-09-19 17:13:52 C 18 34 14.17 +10 45 30.3 V C40
2024-09-19 17:19:58 C 18 34 14.48 +10 45 28.7 V C40
2024-09-19 17:23:00 C 18 34 14.70 +10 45 27.8 V C40
2024-09-19 17:29:04 C 18 34 14.95 +10 45 26.2 V C40
2024-09-19 17:58:55 C 18 34 16.62 +10 45 20.5 V C40
2024-09-19 18:04:59 C 18 34 16.87 +10 45 19.2 V C40
2024-09-19 18:14:05 C 18 34 17.39 +10 45 17.2 V C40
2024-09-19 18:20:09 C 18 34 17.71 +10 45 15.0 V C40
2024-09-19 18:23:12 C 18 34 17.90 +10 45 14.8 V C40
2024-09-19 18:29:17 C 18 34 18.20 +10 45 12.8 V C40
2024-09-22 18:06:08 C 18 38 13.67 +10 29 27.6 V C40
2024-09-22 18:23:29 C 18 38 14.61 +10 29 24.0 V C40
2024-09-22 18:40:38 C 18 38 15.50 +10 29 20.2 V C40
2024-09-27 16:38:46 C 18 44 50.53 +10 05 06.0 V C40
2024-09-27 17:03:54 C 18 44 51.90 +10 05 01.7 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)