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
2014-11-28 08:15:09 C 10 38 08.04 -04 55 19.6 17.7 q W95
2014-11-28 08:24:21 C 10 38 09.49 -04 55 45.6 17.7 q W95
2014-11-29 12:24:15 C 10 42 35.95 -06 15 17.2 q G96
2014-11-29 12:32:56 C 10 42 37.31 -06 15 42.2 q G96
2014-11-29 12:41:38 C 10 42 38.70 -06 16 07.2 q G96
2014-11-29 12:50:18 C 10 42 40.07 -06 16 32.1 q G96
2014-12-21 07:53:24 C 12 36 15.88 -34 56 57.0 17.7 q W95
2014-12-21 08:02:55 C 12 36 18.66 -34 57 28.1 17.6 q W95
2014-12-21 08:12:25 C 12 36 21.41 -34 57 58.7 17.7 q W95
2014-12-21 08:21:55 C 12 36 24.16 -34 58 29.5 18.0 q W95
2015-05-23 10:56:32 C 22 41 15.69 +15 22 50.8 q 703
2015-05-23 11:00:51 C 22 41 15.87 +15 22 55.5 q 703
2015-05-23 11:05:15 C 22 41 15.96 +15 23 00.1 q 703
2015-05-23 11:09:35 C 22 41 16.08 +15 23 04.6 q 703
2015-06-05 08:50:37 C 22 46 26.37 +20 49 46.4 t 705
2015-06-05 08:52:29 C 22 46 26.46 +20 49 47.8 t 705
2015-06-05 08:54:22 C 22 46 26.37 +20 49 50.5 t 705
2015-06-21 09:27:44 C 22 45 23.42 +27 04 16.8 q 703
2015-06-21 09:33:34 C 22 45 23.32 +27 04 22.7 q 703
2015-06-21 09:39:26 C 22 45 23.25 +27 04 26.9 q 703
2015-07-03 12:01:03 C 22 38 10.424 +31 12 12.76 L F51
2015-07-03 12:15:59 C 22 38 09.871 +31 12 24.66 L F51
2015-07-03 12:31:04 C 22 38 09.312 +31 12 36.80 L F51
2015-07-04 11:43:26 C 22 37 19.497 +31 30 38.47 L F51
2015-07-04 11:59:15 C 22 37 18.889 +31 30 50.66 L F51
2015-07-04 12:14:33 C 22 37 18.324 +31 31 02.14 L F51
2015-07-04 12:29:30 C 22 37 17.736 +31 31 14.25 L F51
2017-10-20 11:29:53 C 07 46 04.30 +34 26 05.0 U 703
2017-10-20 11:37:52 C 07 46 04.87 +34 26 01.9 U 703
2017-10-20 11:45:53 C 07 46 05.38 +34 25 58.1 U 703
2017-10-20 11:53:54 C 07 46 05.93 +34 25 55.5 U 703
2017-10-25 10:17:35 C 07 53 39.60 +33 37 19.9 U 703
2017-10-25 10:26:16 C 07 53 40.15 +33 37 15.7 U 703
2017-10-25 10:34:50 C 07 53 40.71 +33 37 12.0 U 703
2017-10-25 10:43:26 C 07 53 41.18 +33 37 08.1 U 703
2017-10-27 14:30:08 C 07 56 54.17 +33 13 58.8 T08
2017-10-27 14:44:28 C 07 56 55.04 +33 13 52.3 T08
2017-10-27 14:59:50 C 07 56 55.92 +33 13 44.7 T08
2017-10-27 15:19:34 C 07 56 57.14 +33 13 35.4 T08
2017-10-28 10:21:43 C 07 58 07.41 +33 04 42.1 U G96
2017-10-28 10:29:51 C 07 58 07.91 +33 04 38.5 U G96
2017-10-28 10:38:02 C 07 58 08.38 +33 04 34.3 U G96
2017-10-28 10:46:16 C 07 58 08.88 +33 04 30.6 U G96
2017-10-28 14:32:09 C 07 58 22.625 +33 02 45.66 L F51
2017-10-28 14:43:07 C 07 58 23.273 +33 02 40.53 L F51
2017-10-28 14:54:10 C 07 58 23.927 +33 02 35.33 L F51
2017-10-28 15:05:15 C 07 58 24.580 +33 02 30.15 L F51
2017-10-30 09:37:55 C 08 00 59.43 +32 41 55.8 U 703
2017-10-30 09:54:41 C 08 01 00.47 +32 41 45.0 U 703
2017-10-30 10:02:22 C 08 01 00.93 +32 41 41.5 U 703
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)