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
2021-07-06 21:27:00 C 21 21 04.49 +26 06 25.6 Z L74
2021-07-06 21:33:12 C 21 21 03.59 +26 06 31.6 Z L74
2021-07-06 21:41:16 C 21 21 02.44 +26 06 39.5 Z L74
2021-07-08 11:35:15 C 21 15 42.37 +26 41 55.6 V T05
2021-07-08 11:37:53 C 21 15 41.99 +26 41 58.2 V T05
2021-07-08 11:41:50 C 21 15 41.41 +26 42 01.5 V T05
2021-07-08 12:25:41 C 21 15 35.06 +26 42 40.4 V T05
2021-07-10 11:18:25 C 21 09 01.02 +27 21 13.5 V T08
2021-07-10 11:24:25 C 21 09 00.15 +27 21 18.0 V T08
2021-07-10 11:42:28 C 21 08 57.55 +27 21 32.0 V T08
2021-07-14 09:07:16 C 20 56 03.41 +28 22 35.5 V T08
2021-07-14 09:46:16 C 20 55 57.98 +28 22 57.3 V T08
2021-07-14 10:25:11 C 20 55 52.53 +28 23 18.9 V T08
2021-07-14 20:36:41 C 20 54 29.67 +28 28 34.8 q L47
2021-07-14 21:16:20 C 20 54 24.26 +28 28 56.6 q L47
2021-07-14 21:34:05 C 20 54 21.69 +28 29 07.4 V 073
2021-07-14 21:43:31 C 20 54 20.39 +28 29 12.1 V 073
2021-07-14 21:54:00 C 20 54 18.94 +28 29 17.5 V 073
2021-07-15 05:02:12 C 20 53 21.02 +28 32 57.1 Z W33
2021-07-15 05:14:12 C 20 53 19.36 +28 33 03.2 Z W33
2021-07-15 05:26:11 C 20 53 17.70 +28 33 09.3 Z W33
2021-07-18 06:11:08 C 20 43 38.11 +29 03 35.8 q U55
2021-07-18 06:25:17 C 20 43 36.22 +29 03 40.6 q U55
2021-07-18 06:39:43 C 20 43 34.29 +29 03 45.4 q U55
2021-07-18 11:27:27 C 20 42 56.51 +29 05 28.2 V T08
2021-07-18 12:08:28 C 20 42 51.02 +29 05 41.8 V T08
2021-07-18 12:49:07 C 20 42 45.62 +29 05 54.6 V T08
2021-07-20 10:28:10 C 20 36 55.77 +29 18 43.6 V T05
2021-07-20 11:01:45 C 20 36 51.42 +29 18 51.4 V T05
2021-07-20 11:16:32 C 20 36 49.53 +29 18 55.0 V T05
2021-07-20 11:26:59 C 20 36 48.18 +29 18 57.5 V T05
2021-07-23 18:12:27 C 20 27 10.94 +29 31 22.4 Y N42
2021-07-23 18:14:44 C 20 27 10.66 +29 31 22.5 Y N42
2021-07-23 18:17:02 C 20 27 10.37 +29 31 22.8 Y N42
2021-07-23 18:19:19 C 20 27 10.09 +29 31 23.1 Y N42
2021-07-23 18:21:36 C 20 27 09.82 +29 31 23.1 Y N42
2021-07-23 18:23:54 C 20 27 09.51 +29 31 23.5 Y N42
2021-07-23 18:26:11 C 20 27 09.27 +29 31 23.6 Y N42
2021-07-23 18:28:28 C 20 27 09.00 +29 31 23.7 Y N42
2021-07-23 18:30:46 C 20 27 08.72 +29 31 24.0 Y N42
2021-07-23 18:33:03 C 20 27 08.41 +29 31 24.3 Y N42
2021-07-23 18:35:21 C 20 27 08.17 +29 31 24.6 Y N42
2021-07-23 18:37:37 C 20 27 07.90 +29 31 24.7 Y N42
2021-07-23 18:39:55 C 20 27 07.61 +29 31 24.7 Y N42
2021-07-23 18:42:12 C 20 27 07.34 +29 31 25.1 Y N42
2021-07-23 18:44:29 C 20 27 07.06 +29 31 25.2 Y N42
2021-07-23 18:46:47 C 20 27 06.78 +29 31 25.4 Y N42
2021-07-23 18:49:04 C 20 27 06.51 +29 31 25.6 Y N42
2021-07-23 18:51:21 C 20 27 06.23 +29 31 25.8 Y N42
2021-07-23 18:53:39 C 20 27 05.66 +29 31 26.4 Y N42
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)