2008 US4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6325724850 ± 4.75e-08
Semi-major axis (a)2.3364549713 AU ± 4.93e-08
Inclination (i)13.17619833° ± 1.36e-05
Long. of Asc. Node (Ω)31.13986068° ± 6.84e-06
Arg. of Perihelion (ω)72.83314545° ± 1.76e-05
Mean Anomaly (M)267.79748547° ± 6.00e-05
Mean Motion (n)0.2759790738°/day ± 8.73e-09
Perihelion dist (q)0.85847784 AU ± 1.12e-07
Aphelion dist (Q)3.81443210 AU ± 1.37e-07
Orbital Period3.57138050 yr ± 1.13e-07
Physical Parameters
H (abs. magnitude)20.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.359″
Uncertainty0
Orbit TypeApollo
MOID0.079672 AU
Observations Used206
Oppositions5
Arc Total2008-2015
First Observation Used2008-10-06
Last Observation Used2015-09-10
Observations (235)
Date Type RA Dec Mag Band Observatory
2008-11-08 04:56:01 C 00 11 02.77 +49 48 07.6 17.4 c 704
2008-11-08 05:13:27 C 00 10 46.21 +49 51 14.6 18.0 c 704
2008-11-09 04:29:01 C 23 46 50.57 +54 01 29.8 17.6 c 704
2008-11-09 04:46:26 C 23 46 29.60 +54 04 33.2 18.0 c 704
2008-11-09 05:03:56 C 23 46 08.43 +54 07 37.3 18.0 c 704
2008-11-09 05:21:21 C 23 45 47.37 +54 10 40.0 17.9 c 704
2008-11-09 05:38:45 C 23 45 26.36 +54 13 42.1 17.9 c 704
2008-11-16 18:25:16 C 17 55 46.16 +61 26 26.2 v A78
2008-11-16 18:32:44 C 17 55 35.78 +61 25 37.8 v A78
2008-11-16 18:40:33 C 17 55 24.89 +61 24 46.9 v A78
2008-11-16 18:47:42 C 17 55 14.96 +61 24 00.3 v A78
2009-02-20 09:57:58 C 15 46 36.54 -06 01 03.4 o H55
2009-02-20 10:13:16 C 15 46 36.46 -06 01 12.4 o H55
2009-02-20 10:19:18 C 15 46 36.42 -06 01 16.1 o H55
2009-03-31 10:14:14 C 14 58 46.03 -12 47 24.9 o 691
2009-04-26 04:54:52 C 14 01 26.34 -14 13 16.6 o 691
2009-04-26 05:20:17 C 14 01 24.31 -14 13 17.8 o 691
2009-04-26 05:45:42 C 14 01 22.10 -14 13 20.1 o 691
2015-08-19 13:41:21 C 00 05 55.347 -19 11 04.32 t 568
2015-08-19 14:31:38 C 00 05 53.804 -19 11 22.48 t 568
2015-09-10 10:38:33 C 23 40 24.535 -22 33 51.05 t 568
2015-09-10 10:44:09 C 23 40 24.135 -22 33 53.10 t 568
2016-03-28 21:24:59 S 07 57 57.907 +48 50 59.42 L C51
2016-03-29 00:33:51 S 07 59 22.906 +48 42 14.04 L C51
2016-03-29 03:42:33 S 08 00 47.07 +48 33 27.8 L C51
2016-03-29 05:16:47 S 08 01 28.98 +48 29 03.9 L C51
2016-03-29 06:51:14 S 08 02 10.68 +48 24 38.2 L C51
2016-03-29 08:25:28 S 08 02 52.20 +48 20 13.2 L C51
2016-03-29 08:25:40 S 08 02 52.21 +48 20 11.9 L C51
2016-03-29 09:59:55 S 08 03 33.60 +48 15 45.8 L C51
2016-03-29 11:34:21 S 08 04 14.906 +48 11 19.68 L C51
2016-03-29 13:08:36 S 08 04 55.838 +48 06 52.02 L C51
2016-03-29 14:43:02 S 08 05 36.782 +48 02 23.96 L C51
2016-03-29 17:51:43 S 08 06 58.104 +47 53 26.70 L C51
2016-03-29 21:00:24 S 08 08 18.713 +47 44 27.17 L C51