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
2024-08-16 18:42:19 C 17 53 47.01 +14 19 57.5 V C40
2024-08-16 18:46:03 C 17 53 47.20 +14 19 56.3 V C40
2024-08-16 18:49:46 C 17 53 47.35 +14 19 55.4 V C40
2024-08-17 18:35:30 C 17 54 52.10 +14 13 34.3 V C40
2024-08-17 18:39:14 C 17 54 52.29 +14 13 33.6 V C40
2024-08-17 18:42:57 C 17 54 52.42 +14 13 32.5 V C40
2024-08-17 18:46:40 C 17 54 52.59 +14 13 31.3 V C40
2024-08-17 18:50:23 C 17 54 52.77 +14 13 30.2 V C40
2024-08-17 18:54:06 C 17 54 52.92 +14 13 29.2 V C40
2024-08-17 18:57:48 C 17 54 53.07 +14 13 27.9 V C40
2024-08-17 19:05:14 C 17 54 53.36 +14 13 26.3 V C40
2024-08-17 19:08:56 C 17 54 53.55 +14 13 25.0 V C40
2024-08-17 19:12:39 C 17 54 53.71 +14 13 24.6 V C40
2024-08-17 19:16:22 C 17 54 53.86 +14 13 23.3 V C40
2024-08-18 20:46:42 C 17 56 03.542 +14 06 44.17 V M22
2024-08-18 20:51:15 C 17 56 03.782 +14 06 42.70 V M22
2024-08-18 20:59:02 C 17 56 04.090 +14 06 41.33 V M22
2024-08-18 21:13:58 C 17 56 04.778 +14 06 36.14 V M22
2024-08-18 21:51:27 C 17 56 06.571 +14 06 12.06 Z C23
2024-08-18 22:04:22 C 17 56 06.91 +14 06 09.1 V C40
2024-08-18 22:08:50 C 17 56 07.19 +14 06 07.6 V C40
2024-08-18 22:23:58 C 17 56 08.038 +14 06 03.31 Z C23
2024-08-18 22:24:00 C 17 56 07.87 +14 06 02.7 V C40
2024-08-19 17:28:38 C 17 57 00.70 +14 00 54.0 V C40
2024-08-19 17:33:06 C 17 57 00.95 +14 00 52.9 V C40
2024-08-19 17:35:20 C 17 57 01.00 +14 00 51.4 V C40
2024-08-19 17:39:48 C 17 57 01.22 +14 00 50.9 V C40
2024-08-19 17:42:02 C 17 57 01.30 +14 00 50.7 V C40
2024-08-19 17:44:17 C 17 57 01.41 +14 00 49.7 V C40
2024-08-19 17:46:26 C 17 57 01.49 +14 00 48.9 V C40
2024-08-19 17:48:28 C 17 57 01.60 +14 00 48.6 V C40
2024-08-19 17:52:34 C 17 57 01.78 +14 00 47.6 V C40
2024-08-20 08:42:01 C 17 57 42.293 +13 56 49.02 V T08
2024-08-20 08:46:00 C 17 57 42.463 +13 56 47.98 V T08
2024-08-20 09:12:54 C 17 57 43.666 +13 56 39.91 V T08
2024-08-20 09:35:03 C 17 57 44.578 +13 56 33.54 V T08
2024-08-20 19:03:23 C 17 58 11.08 +13 53 54.9 V C40
2024-08-20 19:06:10 C 17 58 11.16 +13 53 54.2 V C40
2024-08-20 19:11:47 C 17 58 11.41 +13 53 52.4 V C40
2024-08-20 19:17:16 C 17 58 11.68 +13 53 50.9 V C40
2024-08-20 19:22:29 C 17 58 11.91 +13 53 49.1 V C40
2024-08-20 19:25:05 C 17 58 11.99 +13 53 48.4 V C40
2024-08-20 19:28:20 C 17 58 12.15 +13 53 47.6 V C40
2024-08-20 19:34:12 C 17 58 12.43 +13 53 45.5 V C40
2024-08-22 06:29:24 C 17 59 49.555 +13 44 14.86 V T08
2024-08-22 06:42:42 C 17 59 50.138 +13 44 11.22 V T08
2024-08-22 06:56:05 C 17 59 50.717 +13 44 07.66 V T08
2024-08-22 07:32:03 C 17 59 52.289 +13 43 58.12 V T08
2024-08-22 21:59:13 C 18 00 32.29 +13 39 53.2 V C40
2024-08-22 22:00:32 C 18 00 32.41 +13 39 52.3 V C40
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)