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 07:43:59 S 20 19 31.181 +29 33 28.30 V C57
2021-07-26 07:43:59 s 1 +159736.87 0 +221875.33 2180.0 C57
2021-07-26 08:53:59 S 20 19 22.500 +29 33 20.84 V C57
2021-07-26 08:53:59 s 1 +158473.96 9 +226337.53 8530.0 C57
2021-07-26 09:23:59 S 20 19 19.430 +29 33 15.91 V C57
2021-07-26 09:23:59 s 1 +157916.96 6 +228227.64 4420.0 C57
2021-07-26 09:43:59 S 20 19 17.095 +29 33 15.26 V C57
2021-07-26 09:43:59 s 1 +157540.48 8 +229480.35 9740.0 C57
2021-07-26 11:03:59 S 20 19 07.939 +29 33 10.33 V C57
2021-07-26 11:03:59 s 1 +155994.37 1 +234432.54 1740.0 C57
2021-07-26 11:23:59 S 20 19 05.880 +29 33 08.14 V C57
2021-07-26 11:23:59 s 1 +155597.99 9 +235656.02 8060.0 C57
2021-07-26 11:43:59 S 20 19 03.634 +29 33 06.26 V C57
2021-07-26 11:43:59 s 1 +155197.77 2 +236873.69 2970.0 C57
2021-07-26 12:20:02 C 20 19 34.64 +29 33 29.7 V T08
2021-07-26 12:23:59 S 20 18 59.057 +29 33 04.46 V C57
2021-07-26 12:23:59 s 1 +154385.91 3 +239291.73 9030.0 C57
2021-07-26 12:34:48 C 20 19 32.97 +29 33 28.9 V T08
2021-07-26 12:43:09 C 20 19 32.05 +29 33 28.5 V T08
2021-07-26 12:50:00 C 20 19 31.24 +29 33 28.5 V T08
2021-07-26 13:03:59 S 20 18 54.067 +29 33 05.11 V C57
2021-07-26 13:03:59 s 1 +153559.62 0 +241685.73 1310.0 C57
2021-07-26 13:13:59 S 20 18 53.640 +29 32 58.60 V C57
2021-07-26 13:13:59 s 1 +153350.59 1 +242280.97 7430.0 C57
2021-07-26 14:03:59 S 20 18 47.854 +29 32 55.57 V C57
2021-07-26 14:03:59 s 1 +152292.03 1 +245235.52 8120.0 C57
2021-07-26 14:23:59 S 20 18 45.377 +29 32 52.55 V C57
2021-07-26 14:23:59 s 1 +151862.36 4 +246407.41 5970.0 C57
2021-07-26 14:33:59 S 20 18 44.491 +29 32 50.75 V C57
2021-07-26 14:33:59 s 1 +151646.21 1 +246991.24 1000.0 C57
2021-07-26 14:43:59 S 20 18 42.936 +29 32 49.09 V C57
2021-07-26 14:43:59 s 1 +151429.18 5 +247573.66 3450.0 C57
2021-07-26 15:03:59 S 20 18 40.939 +29 32 48.80 V C57
2021-07-26 15:03:59 s 1 +150992.52 9 +248734.26 690.0 C57
2021-07-26 15:13:59 S 20 18 40.217 +29 32 49.99 V C57
2021-07-26 15:13:59 s 1 +150772.90 9 +249312.46 5500.0 C57
2021-07-26 16:13:59 S 20 18 33.461 +29 32 38.69 V C57
2021-07-26 16:13:59 s 1 +149437.36 0 +252752.25 1840.0 C57
2021-07-26 16:23:59 S 20 18 31.788 +29 32 40.99 V C57
2021-07-26 16:23:59 s 1 +149211.83 8 +253320.67 9270.0 C57
2021-07-26 16:33:59 S 20 18 30.756 +29 32 40.67 V C57
2021-07-26 16:33:59 s 1 +148985.49 0 +253887.69 4270.0 C57
2021-07-26 16:43:59 S 20 18 29.981 +29 32 44.02 V C57
2021-07-26 16:43:59 s 1 +148758.31 9 +254453.34 6860.0 C57
2021-07-26 16:53:59 S 20 18 28.625 +29 32 40.78 V C57
2021-07-26 16:53:59 s 1 +148530.33 1 +255017.59 7030.0 C57
2021-07-26 18:43:59 S 20 18 15.950 +29 32 29.69 V C57
2021-07-26 18:43:59 s 1 +145969.64 3 +261133.52 3860.0 C57
2021-07-26 19:03:59 S 20 18 13.968 +29 32 30.05 V C57
2021-07-26 19:03:59 s 1 +145493.90 0 +262227.72 6190.0 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)