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
2021-07-26 19:13:59 S 20 18 13.342 +29 32 22.88 V C57
2021-07-26 19:13:59 s 1 +145254.88 3 +262772.78 4000.0 C57
2021-07-26 19:33:59 S 20 18 10.776 +29 32 21.41 V C57
2021-07-26 19:33:59 s 1 +144774.57 8 +263858.83 2960.0 C57
2021-07-26 19:43:59 S 20 18 09.989 +29 32 25.98 V C57
2021-07-26 19:43:59 s 1 +144533.29 6 +264399.83 4140.0 C57
2021-07-26 19:53:59 S 20 18 08.573 +29 32 22.13 V C57
2021-07-26 19:53:59 s 1 +144291.26 7 +264939.47 3130.0 C57
2021-07-26 20:13:59 S 20 18 06.269 +29 32 20.15 V C57
2021-07-26 20:13:59 s 1 +143804.98 2 +266014.71 4590.0 C57
2021-07-26 20:23:59 S 20 18 05.650 +29 32 21.88 V C57
2021-07-26 20:23:59 s 1 +143560.73 4 +266550.30 7090.0 C57
2021-07-26 20:43:59 S 20 18 03.331 +29 32 15.47 V C57
2021-07-26 20:43:59 s 1 +143070.04 1 +267617.47 5660.0 C57
2021-07-26 20:53:59 S 20 18 01.898 +29 32 15.50 V C57
2021-07-26 20:53:59 s 1 +142823.60 5 +268149.03 1760.0 C57
2021-07-26 21:33:59 S 20 17 57.386 +29 32 11.18 V C57
2021-07-26 21:33:59 s 1 +141830.67 7 +270261.94 5180.0 C57
2021-07-26 21:43:59 S 20 17 56.683 +29 32 06.32 V C57
2021-07-26 21:43:59 s 1 +141580.66 7 +270786.83 840.0 C57
2021-07-26 21:53:59 S 20 17 55.322 +29 32 07.84 V C57
2021-07-26 21:53:59 s 1 +141329.95 3 +271310.39 4450.0 C57
2021-07-26 22:03:59 S 20 17 54.235 +29 32 07.91 V C57
2021-07-26 22:03:59 s 1 +141078.53 7 +271832.62 6010.0 C57
2021-07-26 22:13:59 S 20 17 52.966 +29 32 08.77 V C57
2021-07-26 22:13:59 s 1 +140826.42 4 +272353.52 5540.0 C57
2021-07-26 22:23:59 S 20 17 51.725 +29 32 12.30 V C57
2021-07-26 22:23:59 s 1 +140573.61 7 +272873.10 3040.0 C57
2021-07-26 22:43:59 S 20 17 49.982 +29 32 01.28 V C57
2021-07-26 22:43:59 s 1 +140065.93 5 +273908.29 2020.0 C57
2021-07-26 23:13:59 S 20 17 46.325 +29 32 01.79 V C57
2021-07-26 23:13:59 s 1 +139299.29 1 +275451.18 580.0 C57
2021-07-26 23:33:59 S 20 17 44.038 +29 31 57.25 V C57
2021-07-26 23:33:59 s 1 +138784.82 1 +276473.20 9790.0 C57
2021-07-27 00:03:59 S 20 17 40.752 +29 31 57.36 V C57
2021-07-27 00:03:59 s 1 +138008.11 8 +277996.39 9070.0 C57
2021-07-27 00:43:59 S 20 17 36.674 +29 31 45.05 V C57
2021-07-27 00:43:59 s 1 +136963.32 2 +280009.03 1390.0 C57
2021-07-27 01:23:59 S 20 17 31.589 +29 31 49.80 V C57
2021-07-27 01:23:59 s 1 +135908.20 8 +282000.87 3760.0 C57
2021-07-27 02:03:59 S 20 17 27.401 +29 31 41.16 V C57
2021-07-27 02:03:59 s 1 +134842.97 5 +283972.02 6780.0 C57
2021-07-27 02:23:59 S 20 17 25.106 +29 31 39.18 V C57
2021-07-27 02:23:59 s 1 +134306.62 4 +284949.86 2470.0 C57
2021-07-27 03:23:59 S 20 17 18.706 +29 31 37.31 V C57
2021-07-27 03:23:59 s 1 +132682.92 4 +287852.65 7150.0 C57
2021-07-27 03:33:59 S 20 17 17.568 +29 31 38.39 V C57
2021-07-27 03:33:59 s 1 +132410.20 2 +288331.98 6840.0 C57
2021-07-27 03:53:59 S 20 17 15.617 +29 31 30.79 V C57
2021-07-27 03:53:59 s 1 +131862.98 0 +289286.82 1090.0 C57
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)