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
2021-07-25 20:03:59 S 20 20 51.965 +29 34 19.56 V C57
2021-07-25 20:03:59 s 1 +169072.04 9 +173098.10 5070.0 C57
2021-07-25 20:13:59 S 20 20 50.880 +29 34 15.31 V C57
2021-07-25 20:13:59 s 1 +168987.34 9 +173850.04 2700.0 C57
2021-07-25 20:23:59 S 20 20 49.351 +29 34 16.97 V C57
2021-07-25 20:23:59 s 1 +168901.04 5 +174600.33 5510.0 C57
2021-07-25 20:43:59 S 20 20 47.436 +29 34 16.36 V C57
2021-07-25 20:43:59 s 1 +168723.66 4 +176095.99 6730.0 C57
2021-07-25 20:53:59 S 20 20 46.351 +29 34 16.82 V C57
2021-07-25 20:53:59 s 1 +168632.60 6 +176841.35 5210.0 C57
2021-07-25 21:23:59 S 20 20 43.066 +29 34 17.58 V C57
2021-07-25 21:23:59 s 1 +168350.07 7 +179067.62 2470.0 C57
2021-07-25 22:43:59 S 20 20 33.062 +29 34 07.46 V C57
2021-07-25 22:43:59 s 1 +167529.66 9 +184932.68 3530.0 C57
2021-07-25 23:33:59 S 20 20 27.730 +29 34 03.61 V C57
2021-07-25 23:33:59 s 1 +166968.96 3 +188545.78 8770.0 C57
2021-07-25 23:43:59 S 20 20 26.426 +29 34 00.55 V C57
2021-07-25 23:43:59 s 1 +166852.51 6 +189263.58 880.0 C57
2021-07-26 00:03:59 S 20 20 24.166 +29 34 04.76 V C57
2021-07-26 00:03:59 s 1 +166615.38 1 +190694.38 2370.0 C57
2021-07-26 01:13:59 S 20 20 15.574 +29 34 02.24 V C57
2021-07-26 01:13:59 s 1 +165741.74 0 +195651.98 1550.0 C57
2021-07-26 01:23:59 S 20 20 14.971 +29 33 59.90 V C57
2021-07-26 01:23:59 s 1 +165611.49 5 +196353.86 2270.0 C57
2021-07-26 01:33:59 S 20 20 13.632 +29 33 54.94 V C57
2021-07-26 01:33:59 s 1 +165479.91 2 +197054.16 8970.0 C57
2021-07-26 01:43:59 S 20 20 12.434 +29 33 52.52 V C57
2021-07-26 01:43:59 s 1 +165347.00 1 +197752.89 1690.0 C57
2021-07-26 01:53:59 S 20 20 11.328 +29 33 53.46 V C57
2021-07-26 01:53:59 s 1 +165212.76 8 +198450.04 460.0 C57
2021-07-26 02:13:59 S 20 20 09.038 +29 33 57.53 V C57
2021-07-26 02:13:59 s 1 +164940.36 8 +199839.63 6200.0 C57
2021-07-26 02:23:59 S 20 20 07.824 +29 33 53.53 V C57
2021-07-26 02:23:59 s 1 +164802.21 5 +200532.07 3220.0 C57
2021-07-26 02:43:59 S 20 20 05.405 +29 33 53.64 V C57
2021-07-26 02:43:59 s 1 +164522.04 1 +201912.25 5690.0 C57
2021-07-26 02:53:59 S 20 20 04.411 +29 33 50.62 V C57
2021-07-26 02:53:59 s 1 +164380.03 4 +202600.00 1170.0 C57
2021-07-26 03:23:59 S 20 20 00.658 +29 33 50.33 V C57
2021-07-26 03:23:59 s 1 +163946.42 2 +204653.89 4920.0 C57
2021-07-26 04:03:59 S 20 19 56.270 +29 33 44.78 V C57
2021-07-26 04:03:59 s 1 +163350.81 8 +207370.69 4380.0 C57
2021-07-26 05:03:59 S 20 19 49.250 +29 33 42.37 V C57
2021-07-26 05:03:59 s 1 +162420.90 2 +211399.62 4490.0 C57
2021-07-26 05:13:59 S 20 19 48.444 +29 33 40.79 V C57
2021-07-26 05:13:59 s 1 +162261.74 2 +212065.74 8720.0 C57
2021-07-26 05:53:59 S 20 19 43.639 +29 33 36.04 V C57
2021-07-26 05:53:59 s 1 +161613.41 7 +214714.95 740.0 C57
2021-07-26 06:03:59 S 20 19 42.365 +29 33 32.90 V C57
2021-07-26 06:03:59 s 1 +161448.44 6 +215373.44 7630.0 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)