2004 US1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4511946241 ± 1.12e-07
Semi-major axis (a)1.2843434208 AU ± 9.75e-10
Inclination (i)21.40481858° ± 1.20e-05
Long. of Asc. Node (Ω)223.30819992° ± 3.07e-06
Arg. of Perihelion (ω)74.33799385° ± 1.37e-05
Mean Anomaly (M)217.16343921° ± 4.38e-06
Mean Motion (n)0.6771588023°/day ± 7.71e-10
Perihelion dist (q)0.70485457 AU ± 1.43e-07
Aphelion dist (Q)1.86383227 AU ± 1.43e-07
Orbital Period1.45553197 yr ± 1.66e-09
Physical Parameters
H (abs. magnitude)20.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.317″
Uncertainty0
Orbit TypeApollo
MOID0.065244 AU
Observations Used261
Oppositions6
Arc Total2004-2023
First Observation Used2004-10-18
Last Observation Used2023-12-08
Observations (281)
Date Type RA Dec Mag Band Observatory
2020-11-16 06:41:59 C 01 40 23.44 +01 13 25.5 V G96
2020-11-16 06:49:24 C 01 40 23.80 +01 13 10.8 V G96
2020-11-17 08:22:58 C 01 41 49.17 +00 25 02.7 V T05
2020-11-17 08:24:56 C 01 41 49.27 +00 24 59.5 V T05
2020-11-17 08:28:56 C 01 41 49.43 +00 24 52.8 V T05
2020-11-17 09:45:51 C 01 41 52.97 +00 22 35.4 V T05
2020-11-17 09:47:11 C 01 41 53.08 +00 22 33.0 V T05
2020-11-17 10:05:11 C 01 41 53.86 +00 22 01.3 V T05
2020-11-20 05:39:29 C 01 45 23.25 -01 24 03.7 V 703
2020-11-20 05:54:35 C 01 45 23.75 -01 24 24.0 V 703
2020-11-20 06:02:08 C 01 45 24.11 -01 24 33.3 V 703
2020-12-07 07:01:59 C 02 03 26.159 -05 56 15.12 U F51
2020-12-07 07:17:02 C 02 03 26.738 -05 56 18.20 U F51
2020-12-07 07:31:58 C 02 03 27.300 -05 56 21.32 U F51
2020-12-07 07:46:55 C 02 03 27.871 -05 56 24.30 U F51
2020-12-21 01:41:25 C 02 18 08.72 -06 03 12.4 u H21
2020-12-21 01:53:41 C 02 18 09.26 -06 03 10.8 u H21
2020-12-21 02:00:24 C 02 18 09.56 -06 03 10.1 u H21
2021-01-05 06:44:05 C 02 36 15.379 -04 46 24.62 U F51
2021-01-05 07:01:55 C 02 36 16.254 -04 46 19.73 U F51
2021-01-05 07:19:49 C 02 36 17.155 -04 46 14.66 U F51
2023-04-11 00:41:17 C 08 20 05.57 -15 49 55.8 V 807
2023-04-11 00:54:35 C 08 20 05.54 -15 49 38.0 V 807
2023-04-11 01:07:54 C 08 20 05.45 -15 49 18.8 V 807
2023-12-05 11:34:22 C 05 05 25.466 -06 53 59.41 X F52
2023-12-05 11:52:24 C 05 05 23.491 -06 54 10.30 X F52
2023-12-05 12:10:20 C 05 05 21.535 -06 54 21.18 X F52
2023-12-08 07:54:25 C 04 58 24.337 -07 32 05.57 V G96
2023-12-08 08:01:46 C 04 58 23.585 -07 32 09.31 V G96
2023-12-08 08:09:06 C 04 58 22.811 -07 32 13.02 V G96
2023-12-08 08:16:25 C 04 58 22.069 -07 32 16.98 V G96