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
2008-10-27 02:28:54 C 01 52 04.53 +15 23 17.8 r H45
2008-10-27 02:30:59 C 01 52 04.26 +15 23 26.0 r H45
2008-10-27 02:32:15 C 01 52 04.12 +15 23 31.6 r H45
2008-10-27 02:33:18 C 01 52 03.93 +15 23 34.7 r H45
2008-10-27 02:35:30 C 01 52 03.66 +15 23 42.1 r H45
2008-10-27 02:36:43 C 01 52 03.52 +15 23 47.5 r H45
2008-10-27 02:38:11 C 01 52 03.29 +15 23 52.6 r H45
2008-10-27 02:44:36 C 01 52 02.42 +15 24 16.9 r H45
2008-10-27 05:55:13 C 01 51 36.85 +15 36 08.3 17.3 c 704
2008-10-27 06:03:50 C 01 51 35.63 +15 36 40.7 17.4 c 704
2008-10-27 06:11:49 C 01 51 34.51 +15 37 10.4 17.6 c 704
2008-10-27 06:20:26 C 01 51 33.30 +15 37 42.9 17.6 c 704
2008-10-27 06:28:31 C 01 51 32.13 +15 38 12.9 17.6 c 704
2008-10-27 06:37:08 C 01 51 30.94 +15 38 45.2 17.8 c 704
2008-10-27 06:45:07 C 01 51 29.80 +15 39 15.2 17.3 c 704
2008-10-27 06:53:44 C 01 51 28.59 +15 39 47.6 18.0 c 704
2008-10-27 07:01:44 C 01 51 27.44 +15 40 17.0 17.4 c 704
2008-10-27 07:10:22 C 01 51 26.25 +15 40 49.8 17.7 c 704
2008-10-27 14:47:41 C 01 50 26.95 +16 09 52.7 r 379
2008-10-27 14:50:53 C 01 50 26.49 +16 10 05.2 r 379
2008-10-27 14:54:04 C 01 50 26.03 +16 10 18.0 r 379
2008-10-27 15:09:06 C 01 50 23.80 +16 11 15.7 r 379
2008-10-27 15:24:06 C 01 50 21.63 +16 12 14.1 r 379
2008-10-27 15:32:42 C 01 50 20.37 +16 12 47.1 r 379
2008-10-27 15:35:53 C 01 50 19.92 +16 12 59.7 r 379
2008-10-27 15:39:05 C 01 50 19.48 +16 13 11.7 r 379
2008-10-27 15:47:42 C 01 50 18.18 +16 13 44.9 r 379
2008-10-27 15:50:54 C 01 50 17.72 +16 13 57.6 r 379
2008-10-27 16:05:53 C 01 50 15.55 +16 14 55.3 r 379
2008-10-27 16:09:06 C 01 50 15.10 +16 15 07.9 r 379
2008-10-28 04:23:11 C 01 48 37.14 +17 04 05.0 r H45
2008-10-28 04:24:10 C 01 48 36.99 +17 04 09.4 r H45
2008-10-28 04:26:13 C 01 48 36.65 +17 04 17.6 r H45
2008-10-28 04:26:56 C 01 48 36.56 +17 04 20.8 r H45
2008-10-28 04:29:30 C 01 48 36.18 +17 04 31.0 r H45
2008-10-28 04:30:54 C 01 48 35.94 +17 04 36.6 r H45
2008-10-28 04:31:42 C 01 48 35.82 +17 04 40.0 r H45
2008-10-29 05:28:41 C 01 44 49.39 +18 52 46.1 r H53
2008-10-29 05:30:02 C 01 44 49.14 +18 52 52.6 r H53
2008-10-29 05:31:33 C 01 44 48.89 +18 52 59.4 r H53
2008-10-29 05:33:20 C 01 44 48.61 +18 53 08.6 r H53
2008-10-29 05:34:54 C 01 44 48.33 +18 53 14.5 r H53
2008-10-29 05:36:25 C 01 44 47.92 +18 53 20.9 r H53
2008-10-30 13:03:26 C 01 39 19.93 +21 27 32.2 r 379
2008-10-30 13:07:11 C 01 39 19.21 +21 27 52.5 r 379
2008-10-30 15:16:42 C 01 38 52.23 +21 39 13.4 r 379
2008-10-30 15:19:54 C 01 38 51.55 +21 39 30.6 r 379
2008-10-30 15:23:05 C 01 38 50.89 +21 39 47.5 r 379
2008-10-30 15:46:41 C 01 38 45.99 +21 41 51.3 r 379
2008-10-30 15:49:53 C 01 38 45.30 +21 42 08.6 r 379