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
2023-12-29 09:19:48 C 03 47 54.835 +39 29 28.36 V T05
2023-12-29 09:30:14 C 03 47 53.882 +39 29 15.32 V T05
2023-12-29 09:50:06 C 03 47 52.154 +39 28 51.06 V T05
2023-12-29 23:36:40 C 03 46 41.67 +39 12 03.9 V C40
2023-12-29 23:45:26 C 03 46 40.92 +39 11 53.1 V C40
2023-12-29 23:54:12 C 03 46 40.16 +39 11 42.5 V C40
2023-12-30 00:12:09 C 03 46 38.65 +39 11 20.3 V C40
2023-12-30 00:20:55 C 03 46 37.92 +39 11 09.4 V C40
2023-12-30 00:29:41 C 03 46 37.24 +39 10 58.3 V C40
2023-12-30 10:00:28 C 03 45 49.570 +38 59 29.22 V T08
2023-12-30 10:22:22 C 03 45 47.717 +38 59 02.26 V T08
2023-12-30 10:26:22 C 03 45 47.318 +38 58 56.89 V T08
2023-12-30 10:33:51 C 03 45 46.682 +38 58 48.04 V T08
2023-12-31 06:20:14 C 03 44 09.769 +38 34 29.35 V G96
2023-12-31 06:27:37 C 03 44 09.164 +38 34 20.14 V G96
2023-12-31 06:35:01 C 03 44 08.506 +38 34 10.42 V G96
2023-12-31 06:42:25 C 03 44 07.933 +38 34 01.78 V G96
2023-12-31 10:05:00 C 03 43 51.535 +38 29 52.91 X F51
2023-12-31 10:18:05 C 03 43 50.459 +38 29 36.56 X F51
2023-12-31 10:31:08 C 03 43 49.386 +38 29 20.24 X F51
2023-12-31 10:44:14 C 03 43 48.306 +38 29 03.81 X F51
2024-01-01 05:32:25 C 03 42 19.415 +38 05 43.40 V 703
2024-01-01 05:35:59 C 03 42 19.156 +38 05 38.65 V 703
2024-01-01 05:39:31 C 03 42 18.853 +38 05 34.40 V 703
2024-01-01 05:43:04 C 03 42 18.547 +38 05 29.44 V 703
2024-01-01 09:15:31 C 03 42 01.946 +38 01 05.77 V T05
2024-01-01 09:20:14 C 03 42 01.610 +38 01 00.19 V T05
2024-01-01 09:28:54 C 03 42 00.900 +38 00 49.46 V T05
2024-01-01 09:31:31 C 03 42 00.698 +38 00 46.48 V T05
2024-01-01 09:43:41 C 03 41 59.698 +38 00 30.67 V T05
2024-01-02 09:19:41 C 03 40 12.125 +37 30 56.02 V T08
2024-01-02 09:23:41 C 03 40 11.810 +37 30 50.65 V T08
2024-01-02 09:32:20 C 03 40 11.165 +37 30 39.92 V T08
2024-01-02 10:07:20 C 03 40 08.431 +37 29 55.43 V T08
2024-01-04 08:28:48 C 03 36 49.474 +36 31 09.73 V T05
2024-01-04 08:33:23 C 03 36 49.176 +36 31 04.12 V T05
2024-01-04 08:41:12 C 03 36 48.564 +36 30 54.22 V T05
2024-01-04 09:09:16 C 03 36 46.596 +36 30 18.18 V T05
2024-01-05 08:47:14 C 03 35 11.340 +36 00 05.36 V T05
2024-01-05 08:51:48 C 03 35 11.035 +35 59 59.53 V T05
2024-01-05 09:16:24 C 03 35 09.367 +35 59 27.64 V T05
2024-01-05 09:24:53 C 03 35 08.717 +35 59 16.37 V T05
2024-01-07 08:16:30 C 03 32 12.629 +34 59 02.94 V T08
2024-01-07 08:20:37 C 03 32 12.360 +34 58 57.65 V T08
2024-01-07 08:48:11 C 03 32 10.673 +34 58 21.25 V T08
2024-01-07 08:59:27 C 03 32 09.977 +34 58 07.03 V T08
2024-01-08 08:47:50 C 03 30 46.889 +34 27 24.23 V T05
2024-01-08 08:52:24 C 03 30 46.625 +34 27 18.72 V T05
2024-01-08 09:00:51 C 03 30 46.114 +34 27 07.52 V T05
2024-01-08 09:25:29 C 03 30 44.676 +34 26 35.63 V T05
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)