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
2013-05-07 14:48:52 C 20 18 17.21 -32 25 18.4 o 474
2013-05-07 14:49:52 C 20 18 17.45 -32 25 17.3 o 474
2013-05-07 14:50:53 C 20 18 17.72 -32 25 16.4 o 474
2013-05-14 16:27:26 C 21 08 16.86 -28 26 13.5 q E12
2013-07-04 10:21:41 C 01 19 57.62 +12 26 04.7 u 807
2013-07-04 10:27:00 C 01 19 58.31 +12 26 12.0 u 807
2013-07-04 10:32:19 C 01 19 58.94 +12 26 19.4 u 807
2013-09-04 10:54:58 C 03 22 26.42 +30 44 39.3 q 448
2013-09-04 11:12:47 C 03 22 26.63 +30 44 44.6 q 448
2013-09-04 11:36:05 C 03 22 27.07 +30 44 51.8 q 448
2013-10-02 07:00:52 C 03 09 25.57 +31 46 16.9 q 703
2013-10-02 07:11:25 C 03 09 24.88 +31 46 15.5 q 703
2013-10-02 07:21:48 C 03 09 24.13 +31 46 13.7 q 703
2013-10-10 23:12:59 C 02 54 57.07 +30 53 13.2 q D00
2013-10-10 23:28:53 C 02 54 55.80 +30 53 07.8 q D00
2013-10-10 23:44:56 C 02 54 54.50 +30 53 01.7 q D00
2013-10-11 00:01:03 C 02 54 53.12 +30 52 55.3 q D00
2013-10-12 04:51:09 C 02 52 39.68 +30 42 22.5 o 695
2013-10-12 04:53:30 C 02 52 39.50 +30 42 21.6 o 695
2013-10-12 04:55:53 C 02 52 39.30 +30 42 20.8 o 695
2013-10-12 04:59:26 C 02 52 39.01 +30 42 19.6 o 695
2013-10-24 07:24:55 C 02 28 59.31 +28 18 16.3 q 703
2013-10-24 07:33:48 C 02 28 58.48 +28 18 09.8 q 703
2013-10-24 07:51:34 C 02 28 57.04 +28 18 00.4 q 703
2013-10-31 04:52:58 C 02 16 22.84 +26 34 37.0 q G96
2013-10-31 05:01:59 C 02 16 22.16 +26 34 31.2 q G96
2013-10-31 05:10:58 C 02 16 21.46 +26 34 25.4 q G96
2013-10-31 05:19:58 C 02 16 20.78 +26 34 19.7 q G96
2013-11-04 13:05:44 C 02 09 22.39 +25 26 31.3 q D29
2013-11-04 13:34:22 C 02 09 20.46 +25 26 12.6 q D29
2013-11-04 14:03:00 C 02 09 18.57 +25 25 54.2 q D29
2013-12-01 20:27:17 C 01 48 38.49 +19 38 58.6 t 204
2013-12-01 21:12:22 C 01 48 38.32 +19 38 43.2 t 204
2015-03-11 10:49:45 C 14 05 50.97 -23 44 37.0 o 291
2015-03-11 11:06:55 C 14 05 51.31 -23 44 45.0 o 291
2015-03-31 12:25:17 C 14 11 10.570 -27 45 52.03 L F51
2015-03-31 12:41:25 C 14 11 10.385 -27 45 59.71 L F51
2015-03-31 12:57:35 C 14 11 10.210 -27 46 07.38 L F51
2015-03-31 13:13:47 C 14 11 10.024 -27 46 15.02 L F51
2015-04-01 12:30:14 C 14 11 00.470 -27 57 21.01 L F51
2015-04-01 12:46:24 C 14 11 00.244 -27 57 28.46 L F51
2015-04-01 13:02:34 C 14 11 00.025 -27 57 36.09 L F51
2015-04-01 13:48:18 C 14 10 59.422 -27 57 57.46 L F51
2015-04-14 08:27:09 C 14 04 24.82 -30 13 03.9 q 703
2015-04-14 08:33:38 C 14 04 24.63 -30 13 05.0 q 703
2015-04-14 08:40:05 C 14 04 24.39 -30 13 07.0 q 703
2015-04-14 08:46:38 C 14 04 24.02 -30 13 08.7 q 703
2015-04-15 21:34:39 C 14 03 02.36 -30 26 57.3 o K95
2015-04-15 21:38:14 C 14 03 02.24 -30 26 58.4 o K95
2015-04-16 10:42:33 C 14 02 30.383 -30 32 11.84 L F51
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)