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
2021-05-22 14:17:58 C 23 25 20.600 -09 47 22.90 U F51
2021-05-22 14:25:25 C 23 25 19.857 -09 47 04.35 U F51
2021-05-24 08:12:15 C 23 21 18.69 -08 02 15.7 V X02
2021-05-24 08:21:25 C 23 21 17.79 -08 01 52.9 V X02
2021-05-24 08:32:57 C 23 21 16.66 -08 01 23.9 V X02
2021-05-24 14:09:02 C 23 20 44.64 -07 47 38.5 V T05
2021-05-24 14:16:56 C 23 20 43.86 -07 47 18.8 V T05
2021-05-24 14:41:25 C 23 20 41.44 -07 46 17.7 V T05
2021-05-24 14:49:59 C 23 20 40.60 -07 45 56.4 V T05
2021-05-28 14:11:21 C 23 11 39.14 -03 48 21.6 V T05
2021-05-28 14:17:17 C 23 11 38.55 -03 48 06.8 V T05
2021-05-28 14:28:31 C 23 11 37.47 -03 47 39.1 V T05
2021-05-28 14:50:20 C 23 11 35.32 -03 46 45.2 V T05
2021-05-30 13:34:05 C 23 07 10.68 -01 51 26.0 V T08
2021-05-30 13:38:44 C 23 07 10.24 -01 51 14.5 V T08
2021-05-30 13:47:21 C 23 07 09.38 -01 50 53.2 V T08
2021-05-30 14:12:20 C 23 07 06.92 -01 49 51.9 V T08
2021-06-05 09:57:36 C 22 53 37.81 +03 47 14.4 V 703
2021-06-05 10:03:58 C 22 53 37.21 +03 47 29.6 V 703
2021-06-05 10:10:22 C 22 53 36.55 +03 47 45.0 V 703
2021-06-05 10:16:45 C 22 53 35.89 +03 47 59.6 V 703
2021-06-07 04:47:41 S 22 49 19.41 +05 27 32.9 L C51
2021-06-07 07:56:00 S 22 49 00.36 +05 34 49.3 L C51
2021-06-07 10:09:15 C 22 48 48.16 +05 39 53.4 V G96
2021-06-07 10:17:24 C 22 48 47.31 +05 40 12.5 V G96
2021-06-07 10:25:33 C 22 48 46.47 +05 40 31.2 V G96
2021-06-07 10:33:41 C 22 48 45.60 +05 40 50.2 V G96
2021-06-07 11:04:08 S 22 48 41.27 +05 42 04.9 L C51
2021-06-07 12:38:12 S 22 48 31.74 +05 45 42.1 L C51
2021-06-07 14:12:16 S 22 48 22.19 +05 49 19.3 L C51
2021-06-07 15:46:20 S 22 48 12.63 +05 52 56.5 L C51
2021-06-07 15:46:31 S 22 48 12.61 +05 52 57.3 L C51
2021-06-07 17:20:35 S 22 48 03.02 +05 56 34.3 L C51
2021-06-07 18:54:39 S 22 47 53.46 +06 00 10.9 L C51
2021-06-07 22:02:47 S 22 47 34.27 +06 07 24.0 L C51
2021-06-10 09:49:54 C 22 41 23.34 +08 22 58.9 V 703
2021-06-10 09:58:03 C 22 41 22.43 +08 23 16.7 V 703
2021-06-10 10:06:13 C 22 41 21.55 +08 23 35.3 V 703
2021-06-10 10:14:23 C 22 41 20.66 +08 23 53.6 V 703
2021-06-12 13:13:28 C 22 35 52.43 +10 16 11.1 V T08
2021-06-12 13:38:40 C 22 35 49.58 +10 17 06.0 V T08
2021-06-12 13:57:28 C 22 35 47.45 +10 17 46.9 V T08
2021-06-12 14:19:10 C 22 35 44.99 +10 18 33.8 V T08
2021-06-14 09:15:38 C 22 31 00.40 +11 50 13.7 V 703
2021-06-14 09:23:17 C 22 30 59.53 +11 50 30.0 V 703
2021-06-14 09:30:56 C 22 30 58.64 +11 50 46.1 V 703
2021-06-14 09:38:35 C 22 30 57.78 +11 51 02.3 V 703
2021-06-14 09:45:55 C 22 30 57.02 +11 51 15.6 V U68
2021-06-14 09:48:48 C 22 30 56.63 +11 51 22.9 V U68
2021-06-14 09:50:48 C 22 30 56.47 +11 51 26.0 V U68
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)