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
2017-11-24 14:12:03 C 08 32 18.61 +25 19 28.2 U T08
2017-11-24 14:25:14 C 08 32 19.10 +25 19 14.0 U T08
2017-11-26 09:32:15 C 08 34 04.34 +24 31 03.1 U 703
2017-11-26 09:39:54 C 08 34 04.62 +24 30 54.2 U 703
2017-11-26 09:47:33 C 08 34 04.90 +24 30 45.4 U 703
2017-11-26 09:55:11 C 08 34 05.19 +24 30 36.7 U 703
2017-11-27 07:47:53 C 08 34 56.86 +24 04 51.1 U G96
2017-11-27 07:55:21 C 08 34 57.14 +24 04 42.3 U G96
2017-11-27 08:02:49 C 08 34 57.42 +24 04 33.4 U G96
2017-11-27 08:10:19 C 08 34 57.68 +24 04 25.0 U G96
2017-11-28 01:53:06 C 08 35 38.07 +23 42 51.7 q 160
2017-11-28 01:55:32 C 08 35 38.13 +23 42 48.2 q 160
2017-11-28 01:57:57 C 08 35 38.24 +23 42 45.3 q 160
2017-12-05 00:49:51 C 08 41 17.55 +19 44 17.5 q 160
2017-12-05 00:52:45 C 08 41 17.62 +19 44 12.7 q 160
2017-12-05 00:55:38 C 08 41 17.70 +19 44 07.8 q 160
2017-12-06 01:18:33 C 08 41 59.99 +19 02 53.0 q 160
2017-12-06 01:21:25 C 08 42 00.06 +19 02 48.4 q 160
2017-12-06 01:24:18 C 08 42 00.17 +19 02 43.8 q 160
2017-12-10 04:47:59 C 08 44 31.19 +15 53 17.7 o W92
2017-12-10 04:53:40 C 08 44 31.33 +15 53 05.8 o W92
2017-12-10 13:36:27 C 08 44 42.17 +15 34 25.7 U T08
2017-12-10 13:45:35 C 08 44 42.33 +15 34 06.1 U T08
2017-12-10 14:07:21 C 08 44 42.70 +15 33 19.7 U T08
2017-12-10 14:28:49 C 08 44 43.07 +15 32 33.5 U T08
2017-12-11 10:28:42 C 08 45 08.20 +14 48 43.9 q H15
2017-12-11 10:40:13 C 08 45 08.39 +14 48 18.5 q H15
2017-12-11 10:49:19 C 08 45 08.54 +14 47 57.9 q H15
2017-12-12 12:40:07 C 08 45 38.682 +13 48 40.19 U F51
2017-12-12 12:52:38 C 08 45 38.857 +13 48 10.68 U F51
2017-12-12 13:28:52 C 08 45 39.35 +13 46 45.2 U T05
2017-12-12 13:38:35 C 08 45 39.48 +13 46 22.4 U T05
2017-12-12 13:57:31 C 08 45 39.74 +13 45 37.5 U T05
2017-12-12 14:15:16 C 08 45 40.00 +13 44 55.5 U T05
2017-12-12 15:16:09 C 08 45 40.835 +13 42 31.07 U F51
2017-12-14 11:40:43 C 08 46 25.565 +11 52 08.95 U F51
2017-12-14 11:55:57 C 08 46 25.711 +11 51 26.93 U F51
2017-12-14 12:11:16 C 08 46 25.867 +11 50 47.05 U F51
2017-12-14 12:26:37 C 08 46 26.021 +11 50 07.00 U F51
2017-12-15 03:31:04 C 08 46 38.59 +11 10 04.2 16.2 q J43
2017-12-15 03:43:46 C 08 46 38.62 +11 09 30.6 16.1 q J43
2017-12-15 04:09:08 C 08 46 38.86 +11 08 21.6 15.7 q J43
2017-12-15 09:10:28 C 08 46 43.29 +10 54 43.8 U 703
2017-12-15 09:18:05 C 08 46 43.36 +10 54 22.9 U 703
2017-12-15 09:25:42 C 08 46 43.43 +10 54 02.2 U 703
2017-12-15 09:33:18 C 08 46 43.50 +10 53 41.5 U 703
2017-12-16 08:55:15 C 08 47 00.56 +09 48 12.7 U G96
2017-12-16 09:02:39 C 08 47 00.60 +09 47 51.2 U G96
2017-12-16 09:10:04 C 08 47 00.65 +09 47 30.0 U G96
2017-12-16 09:17:30 C 08 47 00.70 +09 47 08.6 U G96
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)