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
2020-12-23 09:07:34 C 05 37 37.92 +34 26 05.7 V T08
2020-12-23 09:11:33 C 05 37 37.32 +34 26 00.4 V T08
2020-12-23 09:15:32 C 05 37 36.73 +34 25 54.9 V T08
2020-12-23 09:34:47 C 05 37 33.86 +34 25 29.4 V T08
2020-12-24 08:00:41 C 05 34 18.36 +33 54 41.4 V T05
2020-12-24 08:04:38 C 05 34 17.76 +33 54 35.9 V T05
2020-12-24 08:09:54 C 05 34 16.97 +33 54 28.6 V T05
2020-12-24 08:42:53 C 05 34 11.97 +33 53 42.5 V T05
2020-12-26 08:24:32 C 05 27 10.57 +32 43 53.9 V T08
2020-12-26 08:28:31 C 05 27 09.96 +32 43 47.8 V T08
2020-12-26 08:32:32 C 05 27 09.35 +32 43 41.8 V T08
2020-12-26 08:41:49 C 05 27 07.93 +32 43 27.8 V T08
2020-12-31 09:15:51 C 05 09 11.55 +29 21 25.8 V T08
2020-12-31 09:23:49 C 05 09 10.33 +29 21 11.4 V T08
2020-12-31 09:29:09 C 05 09 09.50 +29 21 01.6 V T08
2020-12-31 09:44:26 C 05 09 07.18 +29 20 33.6 V T08
2020-12-31 20:28:32 C 05 07 32.29 +29 01 03.3 o K95
2020-12-31 20:43:40 C 05 07 29.94 +29 00 35.4 o K95
2020-12-31 20:59:13 C 05 07 27.62 +29 00 06.7 o K95
2021-01-02 06:37:58 C 05 02 30.34 +27 56 28.8 V 703
2021-01-02 06:46:37 C 05 02 29.04 +27 56 12.2 V 703
2021-01-02 06:55:12 C 05 02 27.75 +27 55 55.6 V 703
2021-01-02 07:03:47 C 05 02 26.46 +27 55 39.1 V 703
2021-01-03 10:29:35 C 04 58 26.65 +27 02 13.6 V T08
2021-01-03 10:43:11 C 04 58 24.64 +27 01 46.5 V T08
2021-01-03 10:50:31 C 04 58 23.53 +27 01 31.9 V T08
2021-01-04 04:03:19 C 04 55 55.56 +26 27 09.5 V G96
2021-01-04 04:10:47 C 04 55 54.44 +26 26 54.6 V G96
2021-01-04 04:18:14 C 04 55 53.36 +26 26 39.7 V G96
2021-01-04 04:25:41 C 04 55 52.31 +26 26 24.7 V G96
2021-01-05 01:00:07 C 04 52 56.20 +25 44 37.1 V W46
2021-01-05 01:22:16 C 04 52 52.97 +25 43 52.0 V W46
2021-01-05 01:55:37 C 04 52 48.10 +25 42 43.9 V W46
2021-01-05 09:50:52 C 04 51 40.03 +25 26 29.6 V T05
2021-01-05 09:55:29 C 04 51 39.34 +25 26 20.1 V T05
2021-01-05 10:11:59 C 04 51 36.95 +25 25 45.9 V T05
2021-01-05 10:30:02 C 04 51 34.34 +25 25 08.3 V T05
2021-01-06 06:32:46 C 04 48 45.64 +24 43 21.7 V 703
2021-01-06 06:40:21 C 04 48 44.55 +24 43 05.8 V 703
2021-01-06 06:47:56 C 04 48 43.46 +24 42 49.8 V 703
2021-01-06 06:55:31 C 04 48 42.37 +24 42 33.8 V 703
2021-01-07 08:03:38 C 04 45 14.10 +23 49 23.9 V T08
2021-01-07 08:08:17 C 04 45 13.44 +23 49 14.1 V T08
2021-01-07 08:17:42 C 04 45 12.11 +23 48 54.0 V T08
2021-01-07 08:32:26 C 04 45 10.02 +23 48 22.4 V T08
2021-01-08 04:49:44 C 04 42 24.54 +23 04 40.8 V G96
2021-01-08 04:57:10 C 04 42 23.49 +23 04 25.3 V G96
2021-01-08 05:04:36 C 04 42 22.47 +23 04 08.7 V G96
2021-01-08 05:12:02 C 04 42 21.42 +23 03 52.5 V G96
2021-01-08 18:44:26 C 04 40 32.83 +22 34 23.5 V K83
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)