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
2024-02-14 03:32:05 C 03 23 01.187 +17 52 55.02 V 703
2024-02-14 03:35:28 C 03 23 01.259 +17 52 52.28 V 703
2024-02-14 03:38:50 C 03 23 01.399 +17 52 48.40 V 703
2024-02-14 05:16:50 C 03 23 04.505 +17 51 22.46 V T05
2024-02-14 05:21:24 C 03 23 04.582 +17 51 19.01 V T05
2024-02-14 05:30:02 C 03 23 04.826 +17 51 11.34 V T05
2024-02-14 05:44:03 C 03 23 05.196 +17 50 57.95 V T05
2024-02-18 06:57:52 C 03 26 16.114 +16 25 52.93 V T05
2024-02-18 07:03:40 C 03 26 16.298 +16 25 47.42 V T05
2024-02-18 07:13:54 C 03 26 16.668 +16 25 38.64 V T05
2024-02-18 07:31:07 C 03 26 17.263 +16 25 23.84 V T05
2024-02-22 06:58:07 C 03 29 58.044 +15 05 35.77 V T05
2024-02-22 07:02:41 C 03 29 58.205 +15 05 32.39 V T05
2024-02-22 07:31:13 C 03 29 59.357 +15 05 08.59 V T05
2024-02-22 07:39:01 C 03 29 59.647 +15 05 02.00 V T05
2024-02-28 06:11:43 C 03 36 24.420 +13 11 27.46 V T05
2024-02-28 06:16:59 C 03 36 24.684 +13 11 23.42 V T05
2024-02-28 06:26:47 C 03 36 25.152 +13 11 15.29 V T05
2024-02-28 07:32:43 C 03 36 28.272 +13 10 23.81 V T05
2024-02-28 18:20:35 C 03 37 00.079 +13 02 07.91 V M22
2024-02-28 18:25:49 C 03 37 00.319 +13 02 04.42 V M22
2024-02-28 18:33:40 C 03 37 00.674 +13 01 58.01 V M22
2024-02-28 18:48:14 C 03 37 01.354 +13 01 47.06 V M22
2024-03-02 03:33:42 C 03 39 53.255 +12 18 02.74 V 703
2024-03-02 03:36:59 C 03 39 53.438 +12 18 00.18 V 703
2024-03-02 03:40:17 C 03 39 53.608 +12 17 57.48 V 703
2024-03-02 03:43:35 C 03 39 53.816 +12 17 55.03 V 703
2024-03-04 00:26:14 C 03 42 15.36 +11 44 07.5 X W84
2024-03-04 00:38:39 C 03 42 16.01 +11 43 58.1 X W84
2024-03-04 00:51:10 C 03 42 16.66 +11 43 48.6 X W84
2024-03-04 01:03:49 C 03 42 17.33 +11 43 38.9 X W84
2024-03-13 03:10:01 C 03 55 00.138 +09 01 21.32 V 703
2024-03-13 03:13:19 C 03 55 00.304 +09 01 20.42 V 703
2024-03-13 03:16:36 C 03 55 00.491 +09 01 18.37 V 703
2024-03-13 03:19:53 C 03 55 00.728 +09 01 15.06 V 703
2024-03-17 05:32:53 C 04 01 18.948 +07 48 38.05 V T08
2024-03-17 05:38:32 C 04 01 19.296 +07 48 34.52 V T08
2024-03-17 05:46:04 C 04 01 19.793 +07 48 28.73 V T08
2024-03-17 06:03:20 C 04 01 20.892 +07 48 15.77 V T08
2024-03-18 05:45:22 C 04 02 55.037 +07 30 39.60 V T08
2024-03-18 05:50:49 C 04 02 55.394 +07 30 34.20 V T08
2024-03-18 05:58:24 C 04 02 55.901 +07 30 29.05 V T08
2024-03-18 05:59:37 C 04 02 55.975 +07 30 28.20 X F51
2024-03-18 06:15:17 C 04 02 56.978 +07 30 16.63 V T08
2024-03-18 06:16:48 C 04 02 57.096 +07 30 15.33 X F51
2024-03-18 06:50:20 C 04 02 59.290 +07 29 50.25 X F51
2024-03-19 05:46:20 C 04 04 31.440 +07 12 44.42 V T05
2024-03-19 05:50:53 C 04 04 31.762 +07 12 40.93 V T05
2024-03-19 06:10:40 C 04 04 33.038 +07 12 26.42 V T05
2024-03-19 06:33:10 C 04 04 34.502 +07 12 10.08 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)