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
2021-02-01 06:48:15 C 03 47 05.41 +01 55 33.5 V T05
2021-02-01 07:08:01 C 03 47 04.23 +01 54 54.1 V T05
2021-02-03 01:41:50 C 03 44 47.36 +00 30 59.3 V W33
2021-02-03 01:53:39 C 03 44 46.71 +00 30 36.2 V W33
2021-02-03 02:05:33 C 03 44 46.06 +00 30 13.1 V W33
2021-02-03 15:52:08 C 03 44 04.52 +00 03 32.9 q C97
2021-02-03 15:52:54 C 03 44 04.49 +00 03 31.5 q C97
2021-02-03 15:53:39 C 03 44 04.43 +00 03 30.0 q C97
2021-02-03 15:54:24 C 03 44 04.39 +00 03 28.5 q C97
2021-02-03 15:56:38 C 03 44 04.29 +00 03 24.1 q C97
2021-02-06 04:16:28 C 03 41 15.73 -01 51 16.2 V 703
2021-02-06 04:24:42 C 03 41 15.35 -01 51 31.6 V 703
2021-02-06 04:32:57 C 03 41 14.97 -01 51 46.9 V 703
2021-02-06 04:41:11 C 03 41 14.58 -01 52 02.3 V 703
2021-02-07 07:21:56 C 03 40 07.17 -02 41 28.5 V T08
2021-02-07 07:26:36 C 03 40 06.97 -02 41 37.2 V T08
2021-02-07 07:35:16 C 03 40 06.58 -02 41 53.2 V T08
2021-02-07 15:05:14 C 03 39 48.91 -02 55 41.0 q C97
2021-02-07 15:06:36 C 03 39 48.83 -02 55 43.6 q C97
2021-02-07 15:08:15 C 03 39 48.75 -02 55 46.8 q C97
2021-02-07 15:09:38 C 03 39 48.70 -02 55 49.2 q C97
2021-02-07 15:11:00 C 03 39 48.67 -02 55 51.3 q C97
2021-02-07 15:12:22 C 03 39 48.57 -02 55 54.4 q C97
2021-02-07 16:10:06 C 03 39 46.04 -02 57 39.9 q C97
2021-02-07 16:12:50 C 03 39 45.94 -02 57 45.0 q C97
2021-02-07 16:14:13 C 03 39 45.86 -02 57 47.5 q C97
2021-02-07 16:15:36 C 03 39 45.80 -02 57 49.9 q C97
2021-02-07 16:16:58 C 03 39 45.74 -02 57 52.6 q C97
2021-02-07 16:18:20 C 03 39 45.68 -02 57 55.0 q C97
2021-02-08 01:58:19 C 03 39 23.12 -03 15 37.6 V G96
2021-02-08 02:06:29 C 03 39 22.77 -03 15 52.4 V G96
2021-02-08 02:14:37 C 03 39 22.42 -03 16 07.3 V G96
2021-02-08 02:22:46 C 03 39 22.07 -03 16 22.2 V G96
2021-02-08 02:38:24 C 03 39 21.04 -03 16 50.9 V W33
2021-02-08 02:44:26 C 03 39 20.79 -03 17 02.0 V W33
2021-02-08 02:50:29 C 03 39 20.54 -03 17 13.1 V W33
2021-02-08 15:34:27 C 03 38 51.48 -03 40 18.4 q C97
2021-02-08 15:35:21 C 03 38 51.44 -03 40 20.0 q C97
2021-02-08 15:36:12 C 03 38 51.41 -03 40 21.3 q C97
2021-02-08 15:37:07 C 03 38 51.35 -03 40 23.3 q C97
2021-02-08 15:38:00 C 03 38 51.31 -03 40 24.5 q C97
2021-02-10 04:18:13 C 03 37 31.17 -04 46 12.3 V 703
2021-02-10 04:26:23 C 03 37 30.85 -04 46 27.1 V 703
2021-02-10 04:34:31 C 03 37 30.59 -04 46 41.4 V 703
2021-02-10 04:42:40 C 03 37 30.23 -04 46 56.0 V 703
2021-02-11 07:03:45 C 03 36 36.95 -05 33 23.4 V T08
2021-02-11 07:08:24 C 03 36 36.80 -05 33 31.4 V T08
2021-02-11 07:17:02 C 03 36 36.48 -05 33 46.8 V T08
2021-02-11 07:33:38 C 03 36 35.89 -05 34 15.8 V T08
2021-02-12 03:10:42 C 03 35 58.61 -06 08 32.9 V 703
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)