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
2024-07-09 21:46:48 C 16 55 40.38 +13 33 38.9 V 118
2024-07-09 21:51:09 B 16 55 41.38 +13 33 41.5 q M07
2024-07-09 22:24:10 C 16 55 46.59 +13 34 25.4 Y 557
2024-07-09 22:25:17 C 16 55 46.64 +13 34 27.6 V 118
2024-07-09 22:33:06 B 16 55 48.23 +13 34 34.8 q M07
2024-07-09 22:38:33 B 16 55 48.497 +13 34 45.05 X M35
2024-07-09 22:54:34 B 16 55 51.77 +13 35 01.9 q M07
2024-07-09 22:58:34 C 16 55 52.18 +13 35 12.8 V 104
2024-07-09 23:15:25 V 16 55 55.05 +13 35 29.2 V 270
2024-07-09 23:15:25 v 1 013.47530 +52.48672 270
2024-07-09 23:19:06 C 16 55 55.53 +13 35 34.2 Y 557
2024-07-09 23:27:57 V 16 55 57.06 +13 35 44.3 V 270
2024-07-09 23:27:57 v 1 013.47530 +52.48672 270
2024-07-09 23:32:16 C 16 55 57.55 +13 35 51.3 V 118
2024-07-09 23:40:39 V 16 55 59.15 +13 35 59.3 V 270
2024-07-09 23:40:39 v 1 013.47530 +52.48672 270
2024-07-09 23:47:20 C 16 56 00.06 +13 36 13.4 V 104
2024-07-09 23:52:58 V 16 56 01.12 +13 36 14.9 V 270
2024-07-09 23:52:58 v 1 013.47530 +52.48672 270
2024-07-09 23:55:43 C 16 56 01.342 +13 36 19.69 q 056
2024-07-10 00:06:07 C 16 56 03.060 +13 36 32.62 q 056
2024-07-10 00:15:42 C 16 56 04.79 +13 36 44.3 Y 557
2024-07-10 00:18:37 C 16 56 05.110 +13 36 47.88 q 056
2024-07-10 00:33:58 V 16 56 07.90 +13 37 05.7 V 270
2024-07-10 00:33:58 v 1 013.47530 +52.48672 270
2024-07-10 00:37:21 C 16 56 08.201 +13 37 10.92 q 056
2024-07-10 00:37:32 V 16 56 08.48 +13 37 10.3 V 270
2024-07-10 00:37:32 v 1 013.47530 +52.48672 270
2024-07-10 00:40:55 V 16 56 09.03 +13 37 14.0 V 270
2024-07-10 00:40:55 v 1 013.47530 +52.48672 270
2024-07-10 00:44:29 V 16 56 09.61 +13 37 18.6 V 270
2024-07-10 00:44:29 v 1 013.47530 +52.48672 270
2024-07-10 00:46:17 C 16 56 09.68 +13 37 25.7 V 104
2024-07-10 01:17:45 C 16 56 14.97 +13 38 00.0 Y 557
2024-07-10 03:52:17 C 16 56 41.78 +13 42 13.87 W89
2024-07-10 03:53:21 C 16 56 41.94 +13 42 15.27 W89
2024-07-10 03:54:24 C 16 56 42.11 +13 42 16.50 W89
2024-07-10 03:55:27 C 16 56 42.27 +13 42 17.71 W89
2024-07-10 03:56:30 C 16 56 42.44 +13 42 18.97 W89
2024-07-10 08:35:44 C 16 57 28.687 +13 47 14.96 V T05
2024-07-10 08:40:17 C 16 57 29.364 +13 47 20.33 V T05
2024-07-10 08:48:06 C 16 57 30.528 +13 47 29.33 V T05
2024-07-10 09:03:16 C 16 57 32.784 +13 47 46.97 V T05
2024-07-10 11:14:10 V 16 57 54.00 +13 50 57.2 V 270
2024-07-10 11:14:10 v 1 175.46575 -37.91839 270
2024-07-10 11:26:40 V 16 57 55.88 +13 51 11.2 V 270
2024-07-10 11:26:40 v 1 175.46575 -37.91839 270
2024-07-10 11:39:11 V 16 57 57.75 +13 51 25.3 V 270
2024-07-10 11:39:11 v 1 175.46575 -37.91839 270
2024-07-10 11:52:06 V 16 57 59.68 +13 51 39.9 V 270
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)