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
2017-12-17 02:25:08 C 08 47 10.98 +08 56 52.9 q 160
2017-12-17 02:27:58 C 08 47 11.02 +08 56 44.2 q 160
2017-12-17 02:30:47 C 08 47 11.01 +08 56 36.2 q 160
2017-12-19 02:08:11 C 08 47 32.46 +06 26 29.2 q 160
2017-12-19 02:10:59 C 08 47 32.48 +06 26 19.6 q 160
2017-12-19 02:13:40 C 08 47 32.48 +06 26 11.5 q 160
2017-12-21 01:16:52 C 08 47 41.26 +03 41 12.5 q 160
2017-12-21 01:19:44 C 08 47 41.22 +03 41 02.2 q 160
2017-12-21 01:22:36 C 08 47 41.23 +03 40 51.7 q 160
2017-12-22 09:16:13 C 08 47 39.47 +01 38 39.6 U 703
2017-12-22 09:23:49 C 08 47 39.44 +01 38 09.8 U 703
2017-12-22 09:31:26 C 08 47 39.35 +01 37 39.2 U 703
2017-12-22 09:39:03 C 08 47 39.30 +01 37 08.9 U 703
2017-12-23 11:46:26 C 08 47 33.092 -00 09 47.84 U F51
2017-12-23 12:05:45 C 08 47 32.873 -00 11 08.97 U F51
2017-12-23 12:25:00 C 08 47 32.650 -00 12 30.32 U F51
2017-12-23 12:44:21 C 08 47 32.378 -00 13 52.20 U F51
2017-12-24 01:50:38 C 08 47 27.21 -01 10 13.0 15.3 q 160
2017-12-24 01:52:57 C 08 47 27.18 -01 10 23.1 15.3 q 160
2017-12-24 01:55:16 C 08 47 27.16 -01 10 33.2 15.3 q 160
2017-12-26 07:26:59 C 08 46 54.04 -05 18 01.4 U 703
2017-12-26 07:34:38 C 08 46 53.89 -05 18 39.0 U 703
2017-12-26 07:42:16 C 08 46 53.75 -05 19 16.4 U 703
2017-12-26 07:49:55 C 08 46 53.62 -05 19 54.0 U 703
2017-12-29 00:38:13 C 08 45 41.63 -11 00 46.5 o Z22
2017-12-29 00:39:55 C 08 45 41.54 -11 00 55.9 o Z22
2017-12-29 00:41:38 C 08 45 41.53 -11 01 05.4 o Z22
2017-12-29 00:43:17 C 08 45 41.44 -11 01 14.4 o Z22
2017-12-29 01:29:51 C 08 45 40.12 -11 05 37.0 o Z22
2017-12-29 01:31:24 C 08 45 40.06 -11 05 45.9 o Z22
2017-12-29 01:33:19 C 08 45 40.02 -11 05 57.0 o Z22
2017-12-29 01:35:04 C 08 45 39.94 -11 06 06.6 o Z22
2017-12-29 02:25:47 C 08 45 38.39 -11 10 52.8 o Z22
2017-12-29 11:11:16 C 08 45 25.80 -12 00 40.2 U T08
2017-12-29 11:22:53 C 08 45 25.43 -12 01 47.0 U T08
2017-12-29 11:34:38 C 08 45 25.06 -12 02 54.5 U T08
2017-12-29 11:46:21 C 08 45 24.67 -12 04 01.9 U T08
2017-12-31 10:58:43 C 08 44 02.03 -16 47 55.2 U T05
2017-12-31 11:10:29 C 08 44 01.53 -16 49 09.0 U T05
2017-12-31 11:22:22 C 08 44 01.06 -16 50 24.0 U T05
2018-01-02 10:14:24 C 08 42 13.74 -21 56 38.8 U T08
2018-01-02 10:42:01 C 08 42 12.34 -21 59 46.6 U T08
2018-01-02 10:55:59 C 08 42 11.63 -22 01 21.8 U T08
2018-01-03 11:43:17 C 08 41 02.30 -24 52 35.6 U T05
2018-01-03 11:53:34 C 08 41 01.69 -24 53 47.8 U T05
2018-01-03 11:56:12 C 08 41 01.54 -24 54 06.3 U T05
2018-01-03 12:05:24 C 08 41 01.00 -24 55 10.9 U T05
2018-01-05 11:43:03 C 08 38 21.75 -30 39 21.3 U T08
2018-01-05 12:02:50 C 08 38 20.33 -30 41 47.6 U T08
2018-01-05 12:16:41 C 08 38 19.32 -30 43 30.5 U T08
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)