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
2024-01-09 04:40:44 C 03 29 40.931 +34 01 43.57 V 703
2024-01-09 04:44:15 C 03 29 40.740 +34 01 38.82 V 703
2024-01-09 04:47:44 C 03 29 40.564 +34 01 34.54 V 703
2024-01-09 04:51:13 C 03 29 40.290 +34 01 29.71 V 703
2024-01-10 09:09:38 C 03 28 11.158 +33 24 59.44 V T08
2024-01-10 09:23:52 C 03 28 10.409 +33 24 41.18 V T08
2024-01-10 09:31:35 C 03 28 09.962 +33 24 31.36 V T08
2024-01-10 09:36:14 C 03 28 09.739 +33 24 24.80 V T08
2024-01-11 08:06:09 C 03 27 03.607 +32 55 26.29 V T08
2024-01-11 08:10:48 C 03 27 03.374 +32 55 20.10 V T08
2024-01-11 08:18:15 C 03 27 02.990 +32 55 10.70 V T08
2024-01-11 08:44:28 C 03 27 01.678 +32 54 36.36 V T08
2024-01-14 08:01:50 C 03 23 56.640 +31 23 17.74 V T08
2024-01-14 08:05:58 C 03 23 56.489 +31 23 12.23 V T08
2024-01-14 08:16:32 C 03 23 56.021 +31 22 58.80 V T08
2024-01-14 08:30:58 C 03 23 55.442 +31 22 40.26 V T08
2024-01-15 08:00:56 C 03 23 02.695 +30 52 50.23 V T08
2024-01-15 08:06:15 C 03 23 02.482 +30 52 43.57 V T08
2024-01-15 08:16:50 C 03 23 02.098 +30 52 30.14 V T08
2024-01-15 08:44:09 C 03 23 01.044 +30 51 54.86 V T08
2024-01-16 05:23:35 C 03 22 18.084 +30 25 49.01 V 703
2024-01-16 05:26:35 C 03 22 17.994 +30 25 44.54 V 703
2024-01-16 05:29:35 C 03 22 17.893 +30 25 40.80 V 703
2024-01-16 05:32:35 C 03 22 17.764 +30 25 35.90 V 703
2024-01-16 07:56:33 C 03 22 12.994 +30 22 37.34 V T05
2024-01-16 08:01:07 C 03 22 12.852 +30 22 31.55 V T05
2024-01-16 08:18:48 C 03 22 12.230 +30 22 09.34 V T05
2024-01-16 08:26:44 C 03 22 11.950 +30 21 59.33 V T05
2024-01-18 07:31:22 C 03 20 46.200 +29 23 09.28 V T08
2024-01-18 07:35:21 C 03 20 46.097 +29 23 04.27 V T08
2024-01-18 07:49:59 C 03 20 45.598 +29 22 46.24 V T08
2024-01-18 08:14:57 C 03 20 44.916 +29 22 14.92 V T08
2024-01-23 17:33:56 S 03 18 06.45 +26 45 34.6 L C51
2024-01-23 20:39:40 S 03 18 04.05 +26 41 56.2 L C51
2024-01-23 23:45:15 S 03 18 01.61 +26 38 16.5 L C51
2024-01-23 23:45:25 S 03 18 01.56 +26 38 16.5 L C51
2024-01-24 02:50:59 S 03 17 59.29 +26 34 38.9 L C51
2024-01-24 04:23:46 S 03 17 58.06 +26 32 48.9 L C51
2024-01-24 13:40:51 S 03 17 51.40 +26 21 55.8 L C51
2024-01-28 07:28:50 C 03 17 13.272 +24 39 09.94 V T05
2024-01-28 07:33:24 C 03 17 13.241 +24 39 04.68 V T05
2024-01-28 07:42:47 C 03 17 13.224 +24 38 53.99 V T05
2024-01-28 08:13:10 C 03 17 13.082 +24 38 19.61 V T05
2024-01-29 05:58:08 C 03 17 10.964 +24 14 05.35 V 703
2024-01-29 06:01:22 C 03 17 10.943 +24 14 02.36 V 703
2024-01-29 06:04:37 C 03 17 11.000 +24 13 58.37 V 703
2024-01-29 06:07:51 C 03 17 10.943 +24 13 54.16 V 703
2024-01-29 07:17:35 C 03 17 11.100 +24 12 40.28 V T05
2024-01-29 07:23:26 C 03 17 11.117 +24 12 32.80 V T05
2024-01-29 07:33:29 C 03 17 11.052 +24 12 21.46 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)