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
2018-06-10 10:11:19 C 22 35 11.97 +18 04 47.0 U G96
2018-06-10 10:37:10 S 22 35 10.92 +18 05 21.0 L C51
2018-06-10 13:45:28 S 22 35 07.31 +18 09 25.1 L C51
2018-06-10 13:45:40 S 22 35 07.37 +18 09 24.0 L C51
2018-06-10 16:53:59 S 22 35 03.85 +18 13 27.3 L C51
2018-06-13 09:10:50 C 22 33 42.09 +19 35 23.5 U 703
2018-06-13 09:18:29 C 22 33 41.94 +19 35 32.5 U 703
2018-06-13 09:26:07 C 22 33 41.72 +19 35 42.1 U 703
2018-06-13 09:33:45 C 22 33 41.58 +19 35 52.0 U 703
2018-06-16 00:49:49 C 22 32 01.68 +20 54 25.0 q 160
2018-06-16 00:53:44 C 22 32 01.56 +20 54 30.0 q 160
2018-06-16 00:57:38 C 22 32 01.45 +20 54 34.3 q 160
2018-06-17 01:35:41 C 22 31 17.39 +21 24 35.3 q 160
2018-06-17 01:39:31 C 22 31 17.27 +21 24 40.1 q 160
2018-06-17 01:43:22 C 22 31 17.19 +21 24 44.3 q 160
2018-06-19 00:47:34 C 22 29 44.93 +22 21 05.5 q 160
2018-06-19 00:51:24 C 22 29 44.82 +22 21 10.2 q 160
2018-06-19 00:55:17 C 22 29 44.64 +22 21 15.1 q 160
2018-06-20 23:47:59 C 22 28 02.10 +23 16 01.0 q 160
2018-06-20 23:51:59 C 22 28 01.97 +23 16 05.7 q 160
2018-06-20 23:56:01 C 22 28 01.85 +23 16 10.5 q 160
2018-06-22 08:49:28 C 22 26 43.35 +23 53 47.6 U G96
2018-06-22 08:56:59 C 22 26 43.03 +23 53 56.4 U G96
2018-06-22 09:04:29 C 22 26 42.71 +23 54 04.8 U G96
2018-06-22 09:11:59 C 22 26 42.40 +23 54 13.1 U G96
2018-06-24 00:56:00 C 22 25 00.41 +24 38 37.7 q 160
2018-06-24 00:59:33 C 22 25 00.23 +24 38 41.9 q 160
2018-06-24 01:03:06 C 22 25 00.05 +24 38 45.1 q 160
2018-06-24 07:31:31 C 22 24 42.93 +24 45 52.7 U 703
2018-06-24 07:39:04 C 22 24 42.60 +24 46 01.3 U 703
2018-06-24 07:46:37 C 22 24 42.25 +24 46 10.0 U 703
2018-06-24 07:54:10 C 22 24 41.91 +24 46 18.2 U 703
2018-06-27 01:18:26 C 22 21 34.73 +25 56 36.4 q 160
2018-06-27 01:22:31 C 22 21 34.42 +25 56 40.2 q 160
2018-06-27 01:26:34 C 22 21 34.20 +25 56 44.9 q 160
2018-06-30 00:30:19 C 22 17 47.00 +27 09 19.9 q 160
2018-06-30 00:33:50 C 22 17 46.80 +27 09 23.4 q 160
2018-06-30 00:37:17 C 22 17 46.60 +27 09 26.8 q 160
2018-07-01 01:35:16 C 22 16 20.73 +27 33 57.0 q 160
2018-07-01 01:39:07 C 22 16 20.50 +27 34 01.3 q 160
2018-07-01 01:42:59 C 22 16 20.25 +27 34 05.1 q 160
2018-07-02 00:20:22 C 22 15 00.02 +27 55 47.6 q 160
2018-07-02 00:23:24 C 22 14 59.83 +27 55 50.3 q 160
2018-07-02 00:26:26 C 22 14 59.62 +27 55 53.7 q 160
2018-07-06 07:46:24 C 22 08 21.61 +29 29 04.3 U G96
2018-07-06 07:53:16 C 22 08 21.13 +29 29 10.3 U G96
2018-07-06 08:00:10 C 22 08 20.64 +29 29 16.2 U G96
2018-07-06 08:07:02 C 22 08 20.16 +29 29 22.1 U G96
2018-07-09 23:45:18 C 22 02 04.09 +30 39 52.9 q 160
2018-07-09 23:48:31 C 22 02 03.84 +30 39 55.4 q 160
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)