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
2020-11-22 14:48:12 C 06 49 26.05 +42 10 29.1 V T05
2020-11-22 14:53:28 C 06 49 25.80 +42 10 28.5 V T05
2020-11-22 15:12:49 C 06 49 24.90 +42 10 24.9 V T05
2020-11-22 15:36:55 C 06 49 23.83 +42 10 19.5 V T05
2020-11-23 08:36:30 C 06 48 40.32 +42 07 05.3 U I41
2020-11-23 09:22:12 C 06 48 38.16 +42 06 56.8 U I41
2020-11-23 09:50:18 C 06 48 36.83 +42 06 51.4 U I41
2020-11-23 10:11:46 C 06 48 35.82 +42 06 47.3 U I41
2020-11-24 02:59:38 C 06 47 50.12 +42 03 21.5 V W33
2020-11-24 03:10:08 C 06 47 49.59 +42 03 18.7 V W33
2020-11-24 08:27:11 C 06 47 34.16 +42 02 16.8 V 703
2020-11-24 08:34:56 C 06 47 33.77 +42 02 14.8 V 703
2020-11-24 08:42:40 C 06 47 33.37 +42 02 13.5 V 703
2020-11-24 08:50:25 C 06 47 32.95 +42 02 11.8 V 703
2020-11-26 06:08:50 C 06 45 14.17 +41 51 56.7 V 703
2020-11-26 06:16:25 C 06 45 13.77 +41 51 54.6 V 703
2020-11-26 06:24:02 C 06 45 13.34 +41 51 51.9 V 703
2020-11-26 06:31:38 C 06 45 12.91 +41 51 51.0 V 703
2020-11-26 10:39:56 C 06 44 59.157 +41 50 52.96 U F52
2020-11-26 10:53:00 C 06 44 58.392 +41 50 49.87 U F52
2020-11-26 11:06:04 C 06 44 57.638 +41 50 46.85 U F52
2020-11-26 11:19:08 C 06 44 56.881 +41 50 43.73 U F52
2020-11-27 10:39:03 C 06 43 37.231 +41 44 46.08 U F52
2020-11-27 10:51:56 C 06 43 36.442 +41 44 42.74 U F52
2020-11-27 11:04:50 C 06 43 35.640 +41 44 39.48 U F52
2020-11-27 11:17:46 C 06 43 34.847 +41 44 36.20 U F52
2020-11-27 11:19:19 C 06 43 34.74 +41 44 35.9 V T05
2020-11-27 11:23:57 C 06 43 34.46 +41 44 34.5 V T05
2020-11-27 11:32:33 C 06 43 33.92 +41 44 32.4 V T05
2020-11-27 11:47:08 C 06 43 33.03 +41 44 28.6 V T05
2020-11-28 05:51:48 C 06 42 28.10 +41 39 28.6 V 703
2020-11-28 05:59:33 C 06 42 27.55 +41 39 26.4 V 703
2020-11-28 06:07:18 C 06 42 27.11 +41 39 24.3 V 703
2020-11-29 10:20:57 C 06 40 38.97 +41 31 10.7 V T08
2020-11-29 10:25:01 C 06 40 38.62 +41 31 09.5 V T08
2020-11-29 10:41:00 C 06 40 37.55 +41 31 04.8 V T08
2020-12-04 14:39:39 C 06 31 13.17 +40 45 05.1 V T05
2020-12-04 15:53:07 C 06 31 06.74 +40 44 30.7 V T05
2020-12-04 15:56:26 C 06 31 06.41 +40 44 29.4 V T05
2020-12-06 10:40:11 C 06 27 17.82 +40 24 18.5 V 703
2020-12-06 10:48:09 C 06 27 17.02 +40 24 14.2 V 703
2020-12-06 10:56:07 C 06 27 16.25 +40 24 10.1 V 703
2020-12-06 11:04:06 C 06 27 15.49 +40 24 05.9 V 703
2020-12-06 12:11:23 C 06 27 09.58 +40 23 35.6 V T08
2020-12-06 12:44:20 C 06 27 06.40 +40 23 18.8 V T08
2020-12-06 12:48:19 C 06 27 06.00 +40 23 16.8 V T08
2020-12-06 13:28:57 C 06 27 02.07 +40 22 55.8 V T08
2020-12-07 10:32:25 C 06 25 02.76 +40 11 58.0 V T08
2020-12-07 10:38:34 C 06 25 02.14 +40 11 54.7 V T08
2020-12-07 10:56:01 C 06 25 00.40 +40 11 45.4 V T08
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)