2012 US9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2468718507 ± 3.36e-08
Semi-major axis (a)1.0929196104 AU ± 1.29e-09
Inclination (i)8.27641311° ± 3.13e-06
Long. of Asc. Node (Ω)334.65221319° ± 1.84e-05
Arg. of Perihelion (ω)182.97233823° ± 2.22e-05
Mean Anomaly (M)55.06633323° ± 1.89e-05
Mean Motion (n)0.8626407072°/day ± 1.53e-09
Perihelion dist (q)0.82310852 AU ± 3.67e-08
Aphelion dist (Q)1.36273070 AU ± 3.68e-08
Orbital Period1.14256871 yr ± 2.02e-09
Physical Parameters
H (abs. magnitude)21.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.218″
Uncertainty0
Orbit TypeApollo
MOID0.133513 AU
Observations Used149
Oppositions1
Arc Total2012-2021
First Observation Used2012-10-16
Last Observation Used2021-08-14
Observations (155)
Date Type RA Dec Mag Band Observatory
2012-11-08 03:34:13 C 23 03 21.38 +32 00 20.1 r G96
2012-11-16 01:13:46 C 22 48 10.72 +30 12 22.3 u H21
2012-11-16 01:32:03 C 22 48 09.46 +30 12 13.1 u H21
2012-11-16 01:50:36 C 22 48 08.18 +30 12 02.2 u H21
2012-12-06 04:06:24 C 22 35 45.03 +26 36 39.6 o 291
2012-12-06 04:32:45 C 22 35 44.94 +26 36 29.8 o 291
2013-07-04 09:43:36 C 22 54 05.64 -29 11 19.0 u 807
2013-07-04 09:55:06 C 22 54 04.88 -29 11 20.2 u 807
2013-07-04 10:04:47 C 22 54 04.15 -29 11 21.1 u 807
2020-09-17 10:52:24 C 01 53 46.62 +27 22 27.3 V I52
2020-09-17 11:17:08 C 01 53 45.33 +27 22 51.1 V I52
2020-09-17 11:34:08 C 01 53 44.42 +27 23 07.2 V I52
2020-09-21 12:57:15 C 01 48 24.679 +28 57 32.85 U F51
2020-09-21 13:30:12 C 01 48 22.327 +28 58 04.25 U F51
2020-09-21 13:46:37 C 01 48 21.162 +28 58 20.06 U F51
2020-09-26 10:49:46 C 01 39 32.451 +30 50 19.40 U F51
2020-09-26 11:11:17 C 01 39 30.385 +30 50 39.70 U F51
2020-09-26 11:32:03 C 01 39 28.415 +30 50 59.44 U F51
2020-09-27 09:44:25 C 01 37 29.718 +31 11 44.95 U F51
2020-09-27 10:00:26 C 01 37 28.121 +31 11 59.89 U F51
2020-09-27 10:16:31 C 01 37 26.520 +31 12 15.51 U F51
2020-10-06 09:34:48 C 01 12 40.23 +34 16 06.7 V G96
2020-10-06 09:45:19 C 01 12 38.83 +34 16 14.4 V G96
2020-10-06 09:55:51 C 01 12 37.26 +34 16 21.9 V G96
2020-10-06 10:06:23 C 01 12 35.70 +34 16 29.4 V G96
2020-10-07 09:00:29 C 01 09 25.789 +34 33 21.43 U F51
2020-10-07 09:30:31 C 01 09 21.230 +34 33 43.50 U F51
2020-10-07 09:45:36 C 01 09 18.935 +34 33 54.52 U F51
2020-10-08 10:18:45 C 01 05 45.698 +34 51 00.14 U F51
2020-10-08 10:40:27 C 01 05 42.257 +34 51 15.16 U F51
2020-10-08 10:58:16 C 01 05 39.474 +34 51 26.69 U F51
2020-10-10 09:53:02 C 00 58 34.623 +35 21 26.20 U F52
2020-10-10 10:04:23 C 00 58 32.718 +35 21 33.22 U F52
2020-10-10 10:15:43 C 00 58 30.865 +35 21 40.02 U F52
2020-10-10 10:27:00 C 00 58 29.007 +35 21 46.47 U F52
2020-10-10 11:13:14 C 00 58 21.337 +35 22 13.42 U F51
2020-10-10 11:25:22 C 00 58 19.327 +35 22 20.66 U F51
2020-10-10 11:37:30 C 00 58 17.323 +35 22 27.55 U F51
2020-10-10 11:49:37 C 00 58 15.330 +35 22 34.35 U F51
2020-10-11 05:48:43 C 00 55 27.65 +35 32 55.8 V G96
2020-10-11 05:56:18 C 00 55 26.37 +35 33 00.4 V G96
2020-10-11 06:03:52 C 00 55 25.10 +35 33 04.8 V G96
2020-10-11 06:11:26 C 00 55 23.85 +35 33 09.0 V G96
2020-10-11 11:51:10 C 00 54 28.292 +35 36 23.59 U F51
2020-10-11 12:04:23 C 00 54 26.078 +35 36 30.39 U F51
2020-10-11 12:17:32 C 00 54 23.848 +35 36 37.18 U F51
2020-10-11 12:30:41 C 00 54 21.649 +35 36 43.69 U F51
2020-10-13 04:49:32 C 00 47 51.78 +35 57 19.1 V G58
2020-10-13 04:57:40 C 00 47 50.38 +35 57 23.1 V G58
2020-10-13 05:05:23 C 00 47 49.03 +35 57 27.2 V G58