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
2024-08-13 20:39:57 B 17 50 37.440 +14 38 16.67 V L92
2024-08-14 07:38:17 C 17 51 07.046 +14 35 31.31 V T05
2024-08-14 07:42:51 C 17 51 07.243 +14 35 30.44 V T05
2024-08-14 07:50:48 C 17 51 07.565 +14 35 27.96 V T05
2024-08-14 19:11:47 C 17 51 38.21 +14 32 27.1 V C40
2024-08-14 19:14:34 C 17 51 38.34 +14 32 26.3 V C40
2024-08-14 19:17:22 C 17 51 38.45 +14 32 25.6 V C40
2024-08-14 19:17:41 C 17 51 38.642 +14 32 40.02 V M22
2024-08-14 19:20:10 C 17 51 38.57 +14 32 24.7 V C40
2024-08-14 19:22:58 C 17 51 38.69 +14 32 24.0 V C40
2024-08-14 19:25:45 C 17 51 38.80 +14 32 23.2 V C40
2024-08-14 19:28:33 C 17 51 38.93 +14 32 22.5 V C40
2024-08-14 19:30:20 C 17 51 38.99 +14 32 22.0 V M77
2024-08-14 19:31:21 C 17 51 39.04 +14 32 21.9 V C40
2024-08-14 19:32:08 C 17 51 39.235 +14 32 36.10 V M22
2024-08-14 19:34:08 C 17 51 39.17 +14 32 21.2 V C40
2024-08-14 19:36:55 C 17 51 39.28 +14 32 20.4 V C40
2024-08-14 19:39:43 C 17 51 39.41 +14 32 19.6 V C40
2024-08-14 19:39:56 C 17 51 39.559 +14 32 34.04 V M22
2024-08-14 19:42:31 C 17 51 39.53 +14 32 18.8 V C40
2024-08-14 20:00:18 C 17 51 40.29 +14 32 14.0 V M77
2024-08-14 20:30:14 C 17 51 41.58 +14 32 05.8 V M77
2024-08-14 21:23:55 C 17 51 44.122 +14 31 51.78 Z C23
2024-08-14 22:21:23 C 17 51 46.675 +14 31 36.37 Z C23
2024-08-15 18:12:09 C 17 52 40.60 +14 26 26.3 V C40
2024-08-15 18:15:52 C 17 52 40.76 +14 26 25.2 V C40
2024-08-15 18:19:36 C 17 52 40.91 +14 26 24.2 V C40
2024-08-15 18:23:20 C 17 52 41.07 +14 26 23.1 V C40
2024-08-15 18:27:04 C 17 52 41.23 +14 26 22.3 V C40
2024-08-15 18:30:47 C 17 52 41.39 +14 26 21.1 V C40
2024-08-15 18:34:31 C 17 52 41.54 +14 26 20.2 V C40
2024-08-15 18:38:14 C 17 52 41.72 +14 26 19.1 V C40
2024-08-15 18:41:58 C 17 52 41.86 +14 26 18.3 V C40
2024-08-15 18:45:42 C 17 52 42.03 +14 26 17.2 V C40
2024-08-15 18:49:26 C 17 52 42.19 +14 26 16.3 V C40
2024-08-15 18:53:10 C 17 52 42.36 +14 26 16.0 V C40
2024-08-15 21:04:46 C 17 52 48.290 +14 25 39.29 Z C23
2024-08-15 21:48:16 C 17 52 50.182 +14 25 28.38 Z C23
2024-08-16 07:43:02 C 17 53 17.110 +14 22 56.86 V T08
2024-08-16 07:47:14 C 17 53 17.278 +14 22 55.81 V T08
2024-08-16 07:59:29 C 17 53 17.784 +14 22 52.50 V T08
2024-08-16 08:26:35 C 17 53 18.934 +14 22 44.98 V T08
2024-08-16 18:08:50 C 17 53 45.58 +14 20 06.4 V C40
2024-08-16 18:12:34 C 17 53 45.74 +14 20 05.4 V C40
2024-08-16 18:16:17 C 17 53 45.92 +14 20 04.3 V C40
2024-08-16 18:20:00 C 17 53 46.06 +14 20 03.4 V C40
2024-08-16 18:23:43 C 17 53 46.22 +14 20 02.4 V C40
2024-08-16 18:27:26 C 17 53 46.38 +14 20 01.3 V C40
2024-08-16 18:31:09 C 17 53 46.55 +14 20 00.3 V C40
2024-08-16 18:34:53 C 17 53 46.71 +14 19 59.2 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)