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
2021-07-27 13:33:59 S 20 16 12.835 +29 30 26.57 V C57
2021-07-27 13:33:59 s 1 +115056.41 2 +314816.61 4850.0 C57
2021-07-27 15:33:59 S 20 15 59.990 +29 30 10.44 V C57
2021-07-27 15:33:59 s 1 +111377.64 4 +319591.19 460.0 C57
2021-07-27 17:13:59 S 20 15 48.660 +29 29 54.13 V C57
2021-07-27 17:13:59 s 1 +108265.74 0 +323440.92 9980.0 C57
2021-07-27 17:43:59 S 20 15 45.811 +29 29 53.84 V C57
2021-07-27 17:43:59 s 1 +107324.29 7 +324573.15 7770.0 C57
2021-07-27 18:23:59 S 20 15 41.606 +29 29 45.31 V C57
2021-07-27 18:23:59 s 1 +106063.54 3 +326066.60 2800.0 C57
2021-07-27 18:33:59 S 20 15 40.548 +29 29 48.44 V C57
2021-07-27 18:33:59 s 1 +105747.38 6 +326437.08 8860.0 C57
2021-07-27 18:43:59 S 20 15 39.826 +29 29 45.96 V C57
2021-07-27 18:43:59 s 1 +105430.84 5 +326806.41 3840.0 C57
2021-07-27 18:53:59 S 20 15 38.405 +29 29 48.34 V C57
2021-07-27 18:53:59 s 1 +105113.92 3 +327174.58 7760.0 C57
2021-07-27 19:03:59 S 20 15 36.840 +29 29 43.76 V C57
2021-07-27 19:03:59 s 1 +104796.62 1 +327541.61 630.0 C57
2021-07-27 19:33:59 S 20 15 33.684 +29 29 41.60 V C57
2021-07-27 19:33:59 s 1 +103842.45 4 +328635.81 2920.0 C57
2021-07-27 19:43:59 S 20 15 32.825 +29 29 40.31 V C57
2021-07-27 19:43:59 s 1 +103523.65 1 +328998.25 1610.0 C57
2021-07-27 19:53:59 S 20 15 31.846 +29 29 36.71 V C57
2021-07-27 19:53:59 s 1 +103204.47 8 +329359.55 9270.0 C57
2021-07-27 20:13:59 S 20 15 29.652 +29 29 35.59 V C57
2021-07-27 20:13:59 s 1 +102565.02 7 +330078.73 1520.0 C57
2021-07-27 20:33:59 S 20 15 27.593 +29 29 29.58 V C57
2021-07-27 20:33:59 s 1 +101924.11 6 +330793.34 9720.0 C57
2021-07-27 21:33:59 S 20 15 21.130 +29 29 24.32 V C57
2021-07-27 21:33:59 s 1 +99992.769 0 +332909.90 470.0 C57
2021-07-27 21:43:59 S 20 15 20.124 +29 29 20.44 V C57
2021-07-27 21:43:59 s 1 +99669.640 0 +333258.70 7170.0 C57
2021-07-27 21:53:59 S 20 15 18.744 +29 29 24.76 V C57
2021-07-27 21:53:59 s 1 +99346.163 0 +333606.36 2910.0 C57
2021-07-27 22:03:59 S 20 15 18.257 +29 29 22.92 V C57
2021-07-27 22:03:59 s 1 +99022.338 0 +333952.90 7690.0 C57
2021-07-27 22:13:59 S 20 15 16.956 +29 29 20.08 V C57
2021-07-27 22:13:59 s 1 +98698.168 0 +334298.30 1520.0 C57
2021-07-27 22:23:59 S 20 15 16.051 +29 29 19.28 V C57
2021-07-27 22:23:59 s 1 +98373.654 0 +334642.58 4410.0 C57
2021-07-27 22:53:59 S 20 15 12.799 +29 29 17.66 V C57
2021-07-27 22:53:59 s 1 +97398.068 0 +335668.67 7430.0 C57
2021-07-27 23:03:59 S 20 15 11.734 +29 29 12.95 V C57
2021-07-27 23:03:59 s 1 +97072.197 0 +336008.45 6580.0 C57
2021-07-28 00:33:59 S 20 15 02.244 +29 29 02.94 V C57
2021-07-28 00:33:59 s 1 +94124.488 0 +339016.13 8130.0 C57
2021-07-28 00:43:59 S 20 15 01.318 +29 28 56.71 V C57
2021-07-28 00:43:59 s 1 +93795.343 0 +339344.73 8310.0 C57
2021-07-28 01:13:59 S 20 14 57.816 +29 28 53.33 V C57
2021-07-28 01:13:59 s 1 +92806.005 0 +340323.90 3650.0 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)