2017 US4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2169025589 ± 1.52e-07
Semi-major axis (a)1.4047730689 AU ± 1.14e-08
Inclination (i)9.69527509° ± 2.36e-05
Long. of Asc. Node (Ω)204.73815629° ± 3.51e-05
Arg. of Perihelion (ω)318.15641694° ± 3.52e-04
Mean Anomaly (M)191.41075034° ± 4.34e-04
Mean Motion (n)0.5919745241°/day ± 7.23e-09
Perihelion dist (q)1.10007420 AU ± 2.13e-07
Aphelion dist (Q)1.70947194 AU ± 2.14e-07
Orbital Period1.66498091 yr ± 2.03e-08
Physical Parameters
H (abs. magnitude)21.51
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.221″
Uncertainty0
Orbit TypeAmor
MOID0.130870 AU
Observations Used29
Oppositions3
Arc Total2017-2025
First Observation Used2017-10-22
Last Observation Used2025-06-26
Observations (30)
Date Type RA Dec Mag Band Observatory
2017-10-22 10:44:26 C 01 34 26.583 +08 30 55.29 L F51
2017-10-22 11:01:14 C 01 34 25.457 +08 30 39.64 L F51
2017-10-22 11:17:57 C 01 34 24.352 +08 30 24.37 L F51
2017-10-22 11:34:46 C 01 34 23.234 +08 30 08.79 L F51
2017-10-23 08:36:00 C 01 33 04.08 +08 10 44.6 o 291
2017-10-23 08:44:38 C 01 33 03.51 +08 10 36.4 o 291
2017-10-23 08:53:15 C 01 33 02.91 +08 10 28.4 o 291
2017-10-25 06:30:08 C 01 30 12.45 +07 28 25.7 U H01
2017-10-25 06:40:13 C 01 30 11.78 +07 28 16.4 U H01
2017-10-25 06:49:32 C 01 30 11.17 +07 28 07.8 U H01
2017-10-25 07:01:48 C 01 30 10.36 +07 27 56.4 U H01
2017-10-26 05:20:43 C 01 28 47.57 +07 07 23.7 u H21
2017-10-26 05:29:54 C 01 28 47.00 +07 07 15.2 u H21
2017-10-26 05:44:23 C 01 28 46.06 +07 07 02.0 u H21
2017-10-26 07:02:40 C 01 28 41.37 +07 05 49.3 658
2017-10-26 07:05:47 C 01 28 41.19 +07 05 45.7 658
2017-10-26 07:08:55 C 01 28 40.97 +07 05 42.6 658
2022-10-17 07:32:43 C 01 50 59.856 +10 52 19.67 V G96
2022-10-17 07:40:47 C 01 50 59.348 +10 52 12.07 V G96
2022-10-17 07:48:49 C 01 50 58.826 +10 52 04.84 V G96
2022-10-17 07:56:52 C 01 50 58.355 +10 51 58.25 V G96
2022-10-19 11:52:44 C 01 47 48.070 +10 05 49.94 U F52
2022-10-19 12:08:27 C 01 47 47.046 +10 05 35.71 U F52
2022-10-19 12:24:17 C 01 47 46.017 +10 05 21.26 U F52
2022-11-18 03:30:20 C 01 10 21.80 +00 17 01.9 X W84
2022-11-18 03:43:43 C 01 10 21.36 +00 16 53.9 X W84
2022-11-18 04:10:31 C 01 10 20.48 +00 16 38.1 X W84
2025-06-26 07:04:51 C 20 39 57.27 +06 14 24.2 V H21
2025-06-26 07:17:28 C 20 39 56.69 +06 14 27.5 V H21
2025-06-26 07:21:37 C 20 39 56.49 +06 14 28.5 V H21