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
2015-08-08 09:30:23 C 00 20 40.60 +45 42 23.7 u H21
2015-08-08 09:33:22 C 00 20 40.52 +45 42 18.5 u H21
2015-08-08 09:36:14 C 00 20 40.45 +45 42 13.2 u H21
2015-08-08 09:47:39 C 00 20 40.21 +45 41 52.8 u H21
2015-08-10 22:38:15 C 00 21 38.04 +44 04 03.6 r 006
2015-08-10 22:47:26 C 00 21 37.90 +44 03 51.6 r 006
2015-08-10 22:55:13 C 00 21 37.89 +44 03 42.8 r 006
2015-08-10 23:03:50 C 00 21 37.87 +44 03 32.4 r 006
2015-08-10 23:11:42 C 00 21 37.77 +44 03 22.6 r 006
2015-08-11 09:50:33 C 00 21 34.10 +43 48 31.3 u H21
2015-08-11 09:53:25 C 00 21 34.03 +43 48 27.0 u H21
2015-08-11 09:56:21 C 00 21 33.94 +43 48 22.6 u H21
2015-08-11 09:59:14 C 00 21 33.86 +43 48 18.4 u H21
2015-08-11 10:02:12 C 00 21 33.78 +43 48 13.7 u H21
2015-08-17 02:06:48 C 00 21 23.58 +41 00 04.6 18.9 r 238
2015-08-17 02:08:12 C 00 21 23.55 +41 00 03.2 r 238
2015-08-17 02:09:35 C 00 21 23.51 +41 00 02.2 16.5 r 238
2015-08-17 02:10:59 C 00 21 23.47 +41 00 00.7 16.8 r 238
2015-08-17 02:12:22 C 00 21 23.30 +40 59 59.2 16.6 r 238
2015-08-17 09:35:59 C 00 21 18.01 +40 52 26.6 u H21
2015-08-17 09:39:06 C 00 21 17.92 +40 52 22.9 u H21
2015-08-17 09:41:10 C 00 21 17.84 +40 52 20.8 u H21
2015-08-17 09:43:13 C 00 21 17.77 +40 52 18.2 u H21
2015-08-17 09:45:17 C 00 21 17.69 +40 52 16.0 u H21
2015-08-17 09:47:22 C 00 21 17.63 +40 52 13.6 u H21
2015-08-17 09:49:26 C 00 21 17.55 +40 52 11.3 u H21
2015-08-17 09:51:30 C 00 21 17.49 +40 52 08.7 u H21
2015-08-17 09:53:34 C 00 21 17.42 +40 52 06.5 u H21
2015-08-17 09:55:38 C 00 21 17.34 +40 52 04.0 u H21
2015-08-17 09:57:42 C 00 21 17.27 +40 52 01.6 u H21
2015-08-17 09:59:46 C 00 21 17.20 +40 51 59.4 u H21
2015-08-17 10:01:50 C 00 21 17.12 +40 51 56.9 u H21
2015-08-17 10:03:42 C 00 21 17.05 +40 51 54.9 u H21
2015-08-19 22:29:55 C 00 20 40.65 +39 48 29.4 16.8 t 104
2015-08-19 23:21:28 C 00 20 39.09 +39 47 42.9 17.7 t 104
2015-08-19 23:56:13 C 00 20 37.93 +39 47 11.2 17.8 t 104
2015-08-20 00:26:48 C 00 20 36.89 +39 46 43.1 16.8 t 104
2015-08-20 00:27:41 C 00 20 36.93 +39 46 39.3 c A24
2015-08-20 00:28:43 C 00 20 36.88 +39 46 38.5 c A24
2015-08-20 01:29:28 C 00 20 34.73 +39 45 39.0 c A24
2015-08-20 01:30:30 C 00 20 34.69 +39 45 38.1 c A24
2015-08-20 09:39:51 C 00 20 25.18 +39 37 31.9 u H21
2015-08-20 09:42:07 C 00 20 25.08 +39 37 29.4 u H21
2015-08-20 09:44:11 C 00 20 25.02 +39 37 27.2 u H21
2015-08-20 09:46:16 C 00 20 24.94 +39 37 25.0 u H21
2015-08-20 09:48:20 C 00 20 24.86 +39 37 22.8 u H21
2015-08-20 09:50:24 C 00 20 24.78 +39 37 20.6 u H21
2015-08-20 09:52:28 C 00 20 24.70 +39 37 18.4 u H21
2015-08-20 09:54:31 C 00 20 24.63 +39 37 16.1 u H21
2015-08-20 09:56:35 C 00 20 24.56 +39 37 13.9 u H21
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)