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
2021-07-31 21:53:59 s 1 -105485.87 1 +366695.30 3210.0 C57
2021-07-31 22:53:59 S 20 05 50.273 +29 12 06.37 V C57
2021-07-31 22:53:59 s 1 -107477.51 7 +365388.96 8110.0 C57
2021-07-31 23:43:59 S 20 05 45.281 +29 11 58.96 V C57
2021-07-31 23:43:59 s 1 -109129.82 3 +364274.51 1230.0 C57
2021-08-01 07:03:59 S 20 05 05.592 +29 10 26.36 V C57
2021-08-01 07:03:59 s 1 -123357.67 0 +353449.85 1410.0 C57
2021-08-01 07:33:59 S 20 05 02.863 +29 10 19.74 V C57
2021-08-01 07:33:59 s 1 -124305.88 8 +352644.94 3590.0 C57
2021-08-01 13:33:59 S 20 04 30.816 +29 08 56.15 V C57
2021-08-01 13:33:59 s 1 -135442.85 7 +342314.42 2910.0 C57
2021-08-01 14:13:59 S 20 04 27.521 +29 08 41.24 V C57
2021-08-01 14:13:59 s 1 -136651.26 6 +341089.66 5050.0 C57
2021-08-01 14:23:59 S 20 04 26.474 +29 08 39.95 V C57
2021-08-01 14:23:59 s 1 -136952.41 6 +340781.06 4860.0 C57
2021-08-01 15:33:59 S 20 04 20.256 +29 08 26.12 V C57
2021-08-01 15:33:59 s 1 -139049.63 2 +338593.71 6790.0 C57
2021-08-01 15:43:59 S 20 04 19.399 +29 08 27.96 V C57
2021-08-01 15:43:59 s 1 -139347.67 0 +338277.35 6050.0 C57
2021-08-01 15:53:59 S 20 04 18.641 +29 08 22.92 V C57
2021-08-01 15:53:59 s 1 -139645.31 4 +337960.03 3980.0 C57
2021-08-01 16:23:59 S 20 04 16.001 +29 08 14.89 V C57
2021-08-01 16:23:59 s 1 -140535.85 8 +337002.22 9710.0 C57
2021-08-01 16:33:59 S 20 04 15.132 +29 08 16.37 V C57
2021-08-01 16:33:59 s 1 -140831.90 6 +336681.01 2240.0 C57
2021-08-01 19:43:59 S 20 03 58.896 +29 07 33.20 V C57
2021-08-01 19:43:59 s 1 -146378.71 6 +330392.82 7050.0 C57
2021-08-02 07:23:59 S 20 02 57.557 +29 04 48.18 V C57
2021-08-02 07:23:59 s 1 -165387.63 6 +304147.52 8710.0 C57
2021-08-02 08:33:59 S 20 02 51.617 +29 04 27.98 V C57
2021-08-02 08:33:59 s 1 -167150.48 6 +301252.43 3000.0 C57
2021-08-03 05:43:59 S 20 01 03.396 +28 59 34.73 V C57
2021-08-03 05:43:59 s 1 -193566.02 7 +239841.56 5400.0 C57
2021-08-03 07:53:59 S 20 00 52.178 +28 58 58.80 V C57
2021-08-03 07:53:59 s 1 -195558.52 6 +232575.56 6740.0 C57
2021-08-03 08:33:59 S 20 00 49.123 +28 58 49.66 V C57
2021-08-03 08:33:59 s 1 -196139.99 8 +230302.08 3820.0 C57
2021-08-03 16:53:59 S 20 00 07.622 +28 56 52.04 V C57
2021-08-03 16:53:59 s 1 -202036.74 7 +200361.38 940.0 C57
2021-08-04 04:33:59 S 19 59 09.535 +28 53 58.52 V C57
2021-08-04 04:33:59 s 1 -205209.67 8 +153593.31 8100.0 C57
2021-08-04 21:03:59 S 19 57 48.084 +28 50 07.08 V C57
2021-08-04 21:03:59 s 1 -195484.40 1 +77645.155 2150.0 C57
2021-08-04 22:03:59 S 19 57 43.579 +28 49 51.56 V C57
2021-08-04 22:03:59 s 1 -194181.90 2 +72688.440 450.0 C57
2021-08-05 02:23:59 S 19 57 22.219 +28 48 46.33 V C57
2021-08-05 02:23:59 s 1 -187345.77 6 +50798.222 1710.0 C57
2021-08-05 03:03:59 S 19 57 19.090 +28 48 39.92 V C57
2021-08-05 03:03:59 s 1 -186109.43 3 +47375.534 1930.0 C57
2021-08-05 03:23:59 S 19 57 17.544 +28 48 31.00 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)