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
2021-01-17 15:48:41 C 04 15 00.67 +14 34 02.1 q C97
2021-01-17 15:50:53 C 04 15 00.45 +14 33 57.4 q C97
2021-01-17 15:53:05 C 04 15 00.19 +14 33 52.7 q C97
2021-01-17 15:55:18 C 04 14 59.97 +14 33 47.4 q C97
2021-01-18 05:27:11 C 04 13 35.43 +14 02 54.7 V 703
2021-01-18 05:42:18 C 04 13 33.55 +14 02 21.8 V 703
2021-01-18 05:49:53 C 04 13 32.65 +14 02 05.1 V 703
2021-01-18 07:24:15 C 04 13 23.28 +13 58 33.2 V T08
2021-01-18 07:34:15 C 04 13 22.22 +13 58 10.5 V T08
2021-01-18 07:58:24 C 04 13 19.64 +13 57 15.4 V T08
2021-01-18 08:10:41 C 04 13 18.33 +13 56 47.5 V T08
2021-01-18 11:53:07 C 04 12 56.14 +13 48 18.2 q D29
2021-01-18 12:13:28 C 04 12 53.98 +13 47 31.9 q D29
2021-01-18 12:33:50 C 04 12 51.82 +13 46 45.5 q D29
2021-01-18 15:32:17 C 04 12 33.96 +13 40 02.2 q C97
2021-01-18 15:34:31 C 04 12 33.75 +13 39 57.7 q C97
2021-01-18 15:36:43 C 04 12 33.60 +13 39 53.8 q C97
2021-01-18 15:38:55 C 04 12 33.34 +13 39 48.7 q C97
2021-01-18 18:12:17 C 04 12 17.87 +13 33 53.9 V G17
2021-01-18 18:15:10 C 04 12 17.54 +13 33 47.1 V G17
2021-01-18 18:18:03 C 04 12 17.26 +13 33 40.8 V G17
2021-01-18 20:46:52 C 04 12 01.77 +13 28 01.5 V A16
2021-01-18 21:04:18 C 04 11 59.96 +13 27 21.8 V A16
2021-01-18 21:21:44 C 04 11 58.15 +13 26 42.1 V A16
2021-01-18 21:39:16 C 04 11 56.34 +13 26 02.2 V A16
2021-01-19 20:54:35 C 04 09 38.83 +12 33 21.9 V A16
2021-01-19 21:12:16 C 04 09 37.09 +12 32 41.4 V A16
2021-01-19 21:29:57 C 04 09 35.43 +12 32 02.8 V A16
2021-01-19 21:47:39 C 04 09 33.54 +12 31 21.6 V A16
2021-01-24 20:39:56 C 03 59 05.89 +08 07 18.2 V G17
2021-01-24 20:42:36 C 03 59 05.64 +08 07 13.1 V G17
2021-01-24 20:45:16 C 03 59 05.48 +08 07 06.3 V G17
2021-01-26 20:11:46 S 03 55 29.19 +06 25 06.1 L C51
2021-01-26 23:19:54 S 03 55 15.51 +06 18 25.7 L C51
2021-01-27 00:54:09 S 03 55 08.72 +06 15 05.1 L C51
2021-01-27 02:28:13 S 03 55 01.93 +06 11 45.2 L C51
2021-01-27 04:02:17 S 03 54 55.17 +06 08 25.6 L C51
2021-01-27 04:02:28 S 03 54 55.16 +06 08 24.9 L C51
2021-01-27 07:10:36 S 03 54 41.70 +06 01 45.7 L C51
2021-01-27 10:18:55 S 03 54 28.31 +05 55 06.9 L C51
2021-01-28 07:54:57 C 03 52 57.97 +05 09 33.9 V T05
2021-01-28 08:00:54 C 03 52 57.54 +05 09 21.2 V T05
2021-01-28 08:18:47 C 03 52 56.27 +05 08 43.8 V T05
2021-01-28 08:36:39 C 03 52 54.99 +05 08 06.3 V T05
2021-01-30 07:07:13 C 03 49 54.19 +03 31 51.2 V T08
2021-01-30 07:11:52 C 03 49 53.88 +03 31 41.7 V T08
2021-01-30 07:21:10 C 03 49 53.28 +03 31 22.6 V T08
2021-01-30 07:38:28 C 03 49 52.14 +03 30 47.2 V T08
2021-02-01 06:33:42 C 03 47 06.29 +01 56 02.5 V T05
2021-02-01 06:38:58 C 03 47 05.97 +01 55 52.2 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)