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
2021-06-14 09:53:41 C 22 30 56.07 +11 51 33.3 V U68
2021-06-16 13:14:35 C 22 25 04.72 +13 37 39.4 V T08
2021-06-16 13:19:16 C 22 25 04.15 +13 37 48.8 V T08
2021-06-16 13:28:07 C 22 25 03.10 +13 38 06.8 V T08
2021-06-16 13:37:27 C 22 25 01.99 +13 38 25.7 V T08
2021-06-17 20:37:33 C 22 21 24.29 +14 40 16.9 V N86
2021-06-17 20:50:02 C 22 21 22.70 +14 40 41.9 V N86
2021-06-17 21:02:36 C 22 21 21.23 +14 41 06.6 V N86
2021-06-17 21:15:12 C 22 21 19.68 +14 41 31.3 V N86
2021-06-18 12:39:12 C 22 19 30.26 +15 11 43.8 V T05
2021-06-18 12:46:42 C 22 19 29.33 +15 11 58.3 V T05
2021-06-18 12:54:38 C 22 19 28.36 +15 12 13.9 V T05
2021-06-18 13:09:10 C 22 19 26.57 +15 12 42.2 V T05
2021-06-20 09:53:34 C 22 14 01.69 +16 37 46.6 V 703
2021-06-20 09:59:18 C 22 14 00.97 +16 37 57.3 V 703
2021-06-20 10:05:02 C 22 14 00.24 +16 38 07.9 V 703
2021-06-20 10:10:47 C 22 13 59.52 +16 38 18.9 V 703
2021-06-20 14:01:00 C 22 13 31.07 +16 45 30.1 V T08
2021-06-20 14:08:27 C 22 13 30.13 +16 45 43.9 V T08
2021-06-20 14:11:47 C 22 13 29.70 +16 45 50.1 V T08
2021-06-20 14:21:55 C 22 13 28.41 +16 46 09.0 V T08
2021-06-21 08:02:14 C 22 11 18.05 +17 18 31.1 V V06
2021-06-21 08:02:52 C 22 11 17.96 +17 18 32.2 V V06
2021-06-21 08:03:31 C 22 11 17.89 +17 18 33.3 V V06
2021-06-21 08:04:09 C 22 11 17.80 +17 18 34.6 V V06
2021-06-22 13:00:48 C 22 07 40.03 +18 10 29.5 V T05
2021-06-22 13:03:27 C 22 07 39.70 +18 10 34.4 V T05
2021-06-22 13:08:20 C 22 07 39.06 +18 10 43.0 V T05
2021-06-22 13:36:11 C 22 07 35.43 +18 11 32.1 V T05
2021-06-24 12:22:43 C 22 01 37.02 +19 31 42.5 V T08
2021-06-24 12:25:27 C 22 01 36.66 +19 31 47.0 V T08
2021-06-24 12:30:11 C 22 01 36.04 +19 31 55.1 V T08
2021-06-24 12:42:03 C 22 01 34.44 +19 32 14.7 V T08
2021-06-26 21:55:09 C 21 54 04.82 +21 03 51.1 q L47
2021-06-26 22:11:22 C 21 54 02.50 +21 04 17.9 q L47
2021-06-28 12:43:32 C 21 48 52.59 +22 02 10.2 V T08
2021-06-28 12:50:15 C 21 48 51.66 +22 02 20.1 V T08
2021-06-28 12:56:53 C 21 48 50.74 +22 02 29.8 V T08
2021-06-28 13:28:50 C 21 48 46.29 +22 03 16.4 V T08
2021-07-02 12:15:58 C 21 35 47.29 +24 10 32.0 V T08
2021-07-02 12:19:25 C 21 35 46.79 +24 10 36.2 V T08
2021-07-02 12:23:23 C 21 35 46.23 +24 10 41.3 V T08
2021-07-02 12:25:23 C 21 35 45.94 +24 10 43.6 V T08
2021-07-02 12:29:22 C 21 35 45.36 +24 10 48.6 V T08
2021-07-02 12:30:41 C 21 35 45.18 +24 10 50.1 V T08
2021-07-02 12:33:21 C 21 35 44.79 +24 10 53.4 V T08
2021-07-06 11:42:31 C 21 22 26.25 +25 56 56.1 V T08
2021-07-06 11:45:50 C 21 22 25.76 +25 56 59.4 V T08
2021-07-06 12:27:27 C 21 22 19.74 +25 57 41.1 V T08
2021-07-06 12:32:05 C 21 22 19.08 +25 57 45.8 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)