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
2021-02-12 03:18:42 C 03 35 58.34 -06 08 46.7 V 703
2021-02-12 03:26:42 C 03 35 58.06 -06 09 00.6 V 703
2021-02-12 03:34:41 C 03 35 57.78 -06 09 14.4 V 703
2021-02-13 06:04:41 C 03 35 09.74 -06 54 56.3 V T05
2021-02-13 06:09:57 C 03 35 09.56 -06 55 05.4 V T05
2021-02-13 06:18:34 C 03 35 09.28 -06 55 20.1 V T05
2021-02-13 06:33:54 C 03 35 08.76 -06 55 46.3 V T05
2021-02-14 19:16:48 C 03 34 06.84 -07 58 19.8 V K83
2021-02-14 19:19:57 C 03 34 06.76 -07 58 25.1 V K83
2021-02-14 19:23:07 C 03 34 06.66 -07 58 30.2 V K83
2021-02-14 19:27:19 C 03 34 06.51 -07 58 36.7 V K83
2021-02-15 06:05:37 C 03 33 49.42 -08 16 28.1 V T08
2021-02-15 06:10:16 C 03 33 49.29 -08 16 35.8 V T08
2021-02-15 06:20:17 C 03 33 48.98 -08 16 52.5 V T08
2021-02-15 06:37:33 C 03 33 48.47 -08 17 21.6 V T08
2021-02-17 05:36:22 C 03 32 37.69 -09 35 37.2 V T05
2021-02-17 05:44:19 C 03 32 37.47 -09 35 50.3 V T05
2021-02-17 05:49:36 C 03 32 37.32 -09 35 59.2 V T05
2021-02-17 06:06:07 C 03 32 36.86 -09 36 26.1 V T05
2021-02-19 03:20:56 C 03 31 34.20 -10 50 36.2 V 703
2021-02-19 03:29:35 C 03 31 33.98 -10 50 50.2 V 703
2021-02-19 03:38:13 C 03 31 33.76 -10 51 04.2 V 703
2021-02-19 03:46:52 C 03 31 33.55 -10 51 18.1 V 703
2021-02-22 15:34:12 C 03 29 47.92 -13 05 55.1 q C97
2021-02-22 15:35:24 C 03 29 47.91 -13 05 56.9 q C97
2021-02-22 15:36:37 C 03 29 47.87 -13 05 59.0 q C97
2021-02-22 15:37:49 C 03 29 47.86 -13 06 00.3 q C97
2021-02-22 15:39:02 C 03 29 47.83 -13 06 02.5 q C97
2021-02-22 15:40:14 C 03 29 47.80 -13 06 04.8 q C97
2021-02-23 05:38:05 C 03 29 31.02 -13 28 13.9 V T08
2021-02-23 05:43:27 C 03 29 30.91 -13 28 22.4 V T08
2021-02-23 05:52:05 C 03 29 30.69 -13 28 36.2 V T08
2021-02-23 06:06:40 C 03 29 30.35 -13 28 58.9 V T08
2021-02-25 02:16:30 C 03 28 38.07 -14 38 42.5 V 703
2021-02-25 02:24:38 C 03 28 37.87 -14 38 55.0 V 703
2021-02-25 02:32:46 C 03 28 37.69 -14 39 07.6 V 703
2021-02-25 02:40:53 C 03 28 37.51 -14 39 20.5 V 703
2021-03-02 05:46:09 C 03 26 06.18 -17 50 54.1 V T08
2021-03-02 05:51:27 C 03 26 06.07 -17 51 02.2 V T08
2021-03-02 05:59:25 C 03 26 05.87 -17 51 14.5 V T08
2021-03-02 06:19:20 C 03 26 05.36 -17 51 45.1 V T08
2021-03-04 05:44:56 C 03 25 00.50 -19 04 52.0 V T05
2021-03-04 05:56:11 C 03 25 00.21 -19 05 08.7 V T05
2021-03-04 06:00:48 C 03 25 00.07 -19 05 16.1 V T05
2021-03-04 06:23:25 C 03 24 59.47 -19 05 50.5 V T05
2021-05-18 14:14:23 C 23 34 52.88 -13 47 06.1 V T08
2021-05-18 14:20:21 C 23 34 52.27 -13 46 51.5 V T08
2021-05-18 14:35:46 C 23 34 50.65 -13 46 13.4 V T08
2021-05-18 14:47:51 C 23 34 49.38 -13 45 43.6 V T08
2021-05-22 14:10:31 C 23 25 21.346 -09 47 41.54 U F51
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)