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
2021-07-29 03:23:59 s 1 +38020.712 0 +378194.92 9230.0 C57
2021-07-29 03:33:59 S 20 12 15.058 +29 25 01.74 V C57
2021-07-29 03:33:59 s 1 +37658.256 0 +378355.17 4600.0 C57
2021-07-29 04:13:59 S 20 12 11.354 +29 24 53.10 V C57
2021-07-29 04:13:59 s 1 +36207.344 0 +378986.23 3820.0 C57
2021-07-29 04:23:59 S 20 12 10.502 +29 24 52.31 V C57
2021-07-29 04:23:59 s 1 +35844.348 0 +379141.53 8070.0 C57
2021-07-29 04:43:59 S 20 12 08.062 +29 24 50.44 V C57
2021-07-29 04:43:59 s 1 +35118.043 0 +379449.14 5950.0 C57
2021-07-29 04:53:59 S 20 12 07.248 +29 24 48.02 V C57
2021-07-29 04:53:59 s 1 +34754.736 0 +379601.47 9570.0 C57
2021-07-29 05:03:59 S 20 12 05.947 +29 24 51.77 V C57
2021-07-29 05:03:59 s 1 +34391.327 0 +379752.80 3000.0 C57
2021-07-29 05:13:59 S 20 12 05.023 +29 24 45.18 V C57
2021-07-29 05:13:59 s 1 +34027.817 0 +379903.15 6220.0 C57
2021-07-29 05:53:59 S 20 12 01.378 +29 24 39.78 V C57
2021-07-29 05:53:59 s 1 +32572.791 0 +380494.69 7170.0 C57
2021-07-29 06:03:59 S 20 11 59.918 +29 24 35.46 V C57
2021-07-29 06:03:59 s 1 +32208.793 0 +380640.11 9440.0 C57
2021-07-29 06:23:59 S 20 11 58.313 +29 24 29.95 V C57
2021-07-29 06:23:59 s 1 +31480.514 0 +380928.00 3440.0 C57
2021-07-29 07:33:59 S 20 11 51.461 +29 24 25.09 V C57
2021-07-29 07:33:59 s 1 +28928.672 0 +381904.67 2070.0 C57
2021-07-29 07:43:59 S 20 11 50.506 +29 24 18.00 V C57
2021-07-29 07:43:59 s 1 +28563.773 0 +382040.27 2670.0 C57
2021-07-29 07:53:59 S 20 11 49.015 +29 24 19.87 V C57
2021-07-29 07:53:59 s 1 +28198.790 0 +382174.89 3110.0 C57
2021-07-29 08:23:59 S 20 11 46.368 +29 24 13.90 V C57
2021-07-29 08:23:59 s 1 +27103.342 0 +382572.88 3580.0 C57
2021-07-29 08:33:59 S 20 11 45.139 +29 24 12.96 V C57
2021-07-29 08:33:59 s 1 +26738.030 0 +382703.59 3450.0 C57
2021-07-29 10:33:59 S 20 11 33.026 +29 23 54.35 V C57
2021-07-29 10:33:59 s 1 +22348.364 0 +384195.98 2270.0 C57
2021-07-29 12:13:59 S 20 11 23.309 +29 23 30.19 V C57
2021-07-29 12:13:59 s 1 +18682.779 0 +385332.69 1880.0 C57
2021-07-29 13:13:59 S 20 11 18.012 +29 23 24.68 V C57
2021-07-29 13:13:59 s 1 +16480.361 0 +385968.76 4340.0 C57
2021-07-31 01:23:59 S 20 07 48.895 +29 16 39.04 V C57
2021-07-31 01:23:59 s 1 -62891.155 0 +386080.09 3400.0 C57
2021-07-31 03:13:59 S 20 07 38.330 +29 16 19.70 V C57
2021-07-31 03:13:59 s 1 -66813.576 0 +384917.95 2950.0 C57
2021-07-31 03:33:59 S 20 07 36.266 +29 16 15.67 V C57
2021-07-31 03:33:59 s 1 -67524.809 0 +384694.62 6350.0 C57
2021-07-31 04:43:59 S 20 07 29.969 +29 15 58.39 V C57
2021-07-31 04:43:59 s 1 -70009.241 0 +383883.83 9690.0 C57
2021-07-31 05:13:59 S 20 07 27.130 +29 15 54.22 V C57
2021-07-31 05:13:59 s 1 -71071.618 0 +383522.46 7810.0 C57
2021-07-31 05:23:59 S 20 07 26.378 +29 15 52.34 V C57
2021-07-31 05:23:59 s 1 -71425.419 0 +383400.15 2630.0 C57
2021-07-31 05:43:59 S 20 07 24.497 +29 15 46.30 V 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)