436724 (2011 UW158)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3766978695 ± 2.47e-09
Semi-major axis (a)1.6204979066 AU ± 5.89e-09
Inclination (i)4.57321637° ± 5.02e-07
Long. of Asc. Node (Ω)285.94058559° ± 1.41e-06
Arg. of Perihelion (ω)8.82944524° ± 2.36e-06
Mean Anomaly (M)5.21917126° ± 9.63e-06
Mean Motion (n)0.4777927601°/day ± 2.61e-09
Perihelion dist (q)1.01005980 AU ± 5.43e-09
Aphelion dist (Q)2.23093602 AU ± 9.04e-09
Orbital Period2.06287404 yr ± 1.13e-08
Physical Parameters
H (abs. magnitude)19.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.283″
Uncertainty0
Orbit TypeApollo
MOID0.004183 AU
Observations Used906
Radar Obs Used8
Oppositions2
Arc Total2011-2025
First Observation Used2011-10-25
Last Observation Used2025-03-03
Observations (957)
Date Type RA Dec Mag Band Observatory
2015-04-16 10:58:17 C 14 02 29.630 -30 32 17.71 L F51
2015-04-16 11:29:43 C 14 02 28.116 -30 32 29.30 L F51
2015-04-18 10:42:55 C 14 00 27.302 -30 49 28.64 L F51
2015-04-18 11:14:35 C 14 00 25.630 -30 49 39.63 L F51
2015-04-18 11:30:22 C 14 00 24.791 -30 49 44.96 L F51
2015-04-19 07:53:38 C 13 59 28.90 -30 56 47.3 q 703
2015-04-19 08:10:35 C 13 59 27.91 -30 56 52.4 q 703
2015-05-23 07:31:57 C 13 03 11.703 -31 21 31.90 L F51
2015-05-23 07:45:54 C 13 03 10.529 -31 21 27.40 L F51
2015-05-23 07:59:50 C 13 03 09.357 -31 21 22.80 L F51
2015-05-23 08:13:51 C 13 03 08.185 -31 21 18.04 L F51
2015-06-01 02:40:25 C 12 50 15.53 -29 57 40.1 u 807
2015-06-01 02:44:13 C 12 50 15.27 -29 57 38.1 u 807
2015-06-01 02:48:11 C 12 50 15.00 -29 57 36.2 u 807
2015-06-01 02:51:55 C 12 50 14.75 -29 57 34.2 u 807
2015-06-01 02:56:00 C 12 50 14.46 -29 57 32.1 u 807
2015-06-13 13:02:27 C 12 38 35.15 -27 07 26.7 q Q62
2015-06-13 13:07:58 C 12 38 34.92 -27 07 22.0 q Q62
2015-06-13 13:10:43 C 12 38 34.86 -27 07 19.8 q Q62
2015-06-14 04:57:23 C 12 38 13.37 -26 57 32.9 o 291
2015-06-14 05:01:29 C 12 38 13.19 -26 57 29.6 o 291
2015-06-14 05:05:35 C 12 38 13.03 -26 57 26.2 o 291
2015-06-14 08:44:45 C 12 38 11.38 -26 53 47.2 q Q62
2015-06-14 08:51:18 C 12 38 11.09 -26 53 42.7 q Q62
2015-06-14 08:59:09 C 12 38 10.75 -26 53 37.2 q Q62
2015-06-14 09:07:00 C 12 38 10.40 -26 53 31.6 q Q62
2015-06-14 09:16:28 C 12 38 09.99 -26 53 24.9 q Q62
2015-06-14 09:24:21 C 12 38 09.64 -26 53 19.3 q Q62
2015-06-17 04:07:15 C 12 36 49.58 -26 04 20.6 o 691
2015-06-17 04:13:54 C 12 36 49.35 -26 04 15.0 o 691
2015-06-17 04:20:33 C 12 36 49.12 -26 04 09.3 o 691
2015-06-20 10:00:46 C 12 35 52.83 -24 56 50.7 q Q62
2015-06-20 10:15:36 C 12 35 52.37 -24 56 36.5 q Q62
2015-06-20 10:29:10 C 12 35 51.95 -24 56 23.2 q Q62
2015-06-20 10:42:42 C 12 35 51.53 -24 56 10.1 q Q62
2015-06-29 01:02:40 C 12 36 08.00 -20 50 07.3 r Y00
2015-06-29 01:26:55 C 12 36 07.90 -20 49 25.2 r Y00
2015-06-29 01:42:05 C 12 36 07.85 -20 48 58.4 r Y00
2015-06-30 22:29:10 S 12 36 50.513 -19 31 42.31 L C51
2015-07-01 01:38:13 S 12 36 53.53 -19 25 44.8 L C51
2015-07-01 03:12:39 S 12 36 55.05 -19 22 43.6 L C51
2015-07-01 06:21:42 S 12 36 58.15 -19 16 39.5 L C51
2015-07-01 07:56:08 S 12 36 59.71 -19 13 34.9 L C51
2015-07-01 08:52:50 C 12 37 00.85 -19 11 23.9 q Q62
2015-07-01 09:01:14 C 12 37 00.69 -19 11 07.1 q Q62
2015-07-01 09:15:45 C 12 37 00.44 -19 10 38.0 q Q62
2015-07-01 09:23:48 C 12 37 00.30 -19 10 21.6 q Q62
2015-07-01 09:30:34 S 12 37 01.30 -19 10 29.0 L C51
2015-07-01 09:37:02 C 12 37 00.08 -19 09 54.8 q Q62
2015-07-01 15:48:29 S 12 37 07.798 -18 57 55.48 L C51
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2015-07-13 23:20:00 25448571.987 10 us 8560 -14 -14
2015-07-13 23:30:00 25429561.936 1 us 8560 -14 -14
2015-07-13 23:50:00 25391738.755 0.2 us 8560 -14 -14
2015-07-14 21:07:00 23131754.44 4 us 2380 -1 -1
2015-07-14 21:44:00 23068451.37 0.5 us 2380 -1 -1
2015-07-17 00:00:00 18689788.228 0.5 us 8560 -14 -14
2015-07-18 19:30:00 16618701.731 0.5 us 8560 -14 -14
2015-07-26 11:10:00 28804724.53 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)