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
2021-07-28 15:13:59 S 20 13 30.946 +29 26 58.52 V C57
2021-07-28 15:13:59 s 1 +64109.163 0 +363779.69 2620.0 C57
2021-07-28 15:23:59 S 20 13 29.693 +29 26 58.81 V C57
2021-07-28 15:23:59 s 1 +63757.723 0 +364013.91 3880.0 C57
2021-07-28 15:33:59 S 20 13 28.860 +29 26 49.99 V C57
2021-07-28 15:33:59 s 1 +63406.090 0 +364247.10 4650.0 C57
2021-07-28 15:43:59 S 20 13 27.521 +29 26 51.54 V C57
2021-07-28 15:43:59 s 1 +63054.266 0 +364479.26 4940.0 C57
2021-07-28 15:53:59 S 20 13 26.554 +29 26 52.44 V C57
2021-07-28 15:53:59 s 1 +62702.251 0 +364710.37 4760.0 C57
2021-07-28 16:03:59 S 20 13 25.351 +29 26 45.60 V C57
2021-07-28 16:03:59 s 1 +62350.047 0 +364940.46 4100.0 C57
2021-07-28 16:23:59 S 20 13 23.880 +29 26 41.75 V C57
2021-07-28 16:23:59 s 1 +61645.076 0 +365397.52 1380.0 C57
2021-07-28 16:33:59 S 20 13 22.289 +29 26 42.54 V C57
2021-07-28 16:33:59 s 1 +61292.312 0 +365624.51 9330.0 C57
2021-07-28 16:53:59 S 20 13 20.266 +29 26 42.50 V C57
2021-07-28 16:53:59 s 1 +60586.231 0 +366075.38 3860.0 C57
2021-07-28 19:43:59 S 20 13 02.974 +29 26 13.49 V C57
2021-07-28 19:43:59 s 1 +54556.133 0 +369741.93 7640.0 C57
2021-07-28 19:53:59 S 20 13 02.292 +29 26 12.30 V C57
2021-07-28 19:53:59 s 1 +54199.909 0 +369948.40 7140.0 C57
2021-07-28 20:33:59 S 20 12 57.814 +29 26 05.89 V C57
2021-07-28 20:33:59 s 1 +52773.419 0 +370764.13 1320.0 C57
2021-07-28 21:48:05 C 20 13 22.78 +29 29 35.1 q 160
2021-07-28 21:51:03 C 20 13 22.44 +29 29 34.9 q 160
2021-07-28 21:53:59 S 20 12 49.798 +29 25 56.06 V C57
2021-07-28 21:53:59 s 1 +49913.024 0 +372346.85 2130.0 C57
2021-07-28 21:54:05 C 20 13 22.12 +29 29 34.7 q 160
2021-07-28 22:03:59 S 20 12 48.823 +29 25 57.47 V C57
2021-07-28 22:03:59 s 1 +49554.801 0 +372540.13 6910.0 C57
2021-07-28 22:13:59 S 20 12 47.722 +29 25 50.41 V C57
2021-07-28 22:13:59 s 1 +49196.433 0 +372732.41 1340.0 C57
2021-07-28 22:23:59 S 20 12 46.637 +29 25 53.47 V C57
2021-07-28 22:23:59 s 1 +48837.920 0 +372923.67 5440.0 C57
2021-07-28 22:53:59 S 20 12 43.750 +29 25 44.18 V C57
2021-07-28 22:53:59 s 1 +47761.524 0 +373491.41 5760.0 C57
2021-07-28 23:03:59 S 20 12 42.725 +29 25 45.44 V C57
2021-07-28 23:03:59 s 1 +47402.444 0 +373678.64 8560.0 C57
2021-07-28 23:33:59 S 20 12 39.550 +29 25 39.25 V C57
2021-07-28 23:33:59 s 1 +46324.372 0 +374234.30 5040.0 C57
2021-07-29 00:53:59 S 20 12 31.529 +29 25 27.26 V C57
2021-07-29 00:53:59 s 1 +43443.619 0 +375671.86 9000.0 C57
2021-07-29 02:43:59 S 20 12 20.510 +29 25 12.18 V C57
2021-07-29 02:43:59 s 1 +39469.413 0 +377544.01 5400.0 C57
2021-07-29 03:03:59 S 20 12 18.307 +29 25 06.56 V C57
2021-07-29 03:03:59 s 1 +38745.289 0 +377871.45 7790.0 C57
2021-07-29 03:13:59 S 20 12 17.580 +29 25 05.88 V C57
2021-07-29 03:13:59 s 1 +38383.057 0 +378033.68 3630.0 C57
2021-07-29 03:23:59 S 20 12 16.082 +29 25 04.55 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)