IAA RAS IAA Minor Planet Database

2020 US4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5410958048 ± 9.41e-04
Semi-major axis (a)2.2875357058 AU ± 4.82e-03
Inclination (i)10.78274429° ± 1.28e-02
Long. of Asc. Node (Ω)25.41390237° ± 1.91e-03
Arg. of Perihelion (ω)357.06851537° ± 2.74e-03
Mean Anomaly (M)169.82307481° ± 1.68e+00
Mean Motion (n)0.2848790115°/day ± 9.00e-04
Perihelion dist (q)1.04975973 AU ± 3.09e-03
Aphelion dist (Q)3.52531168 AU ± 7.73e-03
Orbital Period3.45980660 yr ± 1.09e-02
Physical Parameters
H (abs. magnitude)25.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.247″
Uncertainty4
Orbit TypeAmor
MOID0.051980 AU
Observations Used18
Oppositions1
Arc Total2020-2020
First Observation Used2020-10-18
Last Observation Used2020-10-24
Observations (18)
Date Type RA Dec Mag Band Observatory
2020-10-18 06:03:14 C 00 09 31.26 -05 25 29.6 – V G96
2020-10-18 06:10:45 C 00 09 32.73 -05 24 03.1 – V G96
2020-10-18 06:18:16 C 00 09 34.28 -05 22 36.6 – V G96
2020-10-18 06:25:47 C 00 09 35.79 -05 21 10.4 – V G96
2020-10-23 04:26:45 C 00 39 11.88 +17 33 54.4 – V G96
2020-10-23 04:34:47 C 00 39 13.71 +17 35 23.3 – V G96
2020-10-23 04:42:49 C 00 39 15.51 +17 36 51.3 – V G96
2020-10-23 04:50:50 C 00 39 17.30 +17 38 20.1 – V G96
2020-10-23 08:42:45 C 00 40 09.89 +18 20 34.0 – V I52
2020-10-23 08:44:52 C 00 40 10.37 +18 20 56.8 – V I52
2020-10-23 08:46:59 C 00 40 10.88 +18 21 19.9 – V I52
2020-10-23 08:49:07 C 00 40 11.40 +18 21 43.1 – V I52
2020-10-23 22:47:35 C 00 43 56.98 +20 51 16.8 – V J95
2020-10-23 23:08:31 C 00 44 01.93 +20 54 57.4 – V J95
2020-10-24 07:38:42 C 00 46 13.65 +22 24 22.9 – V I52
2020-10-24 07:41:36 C 00 46 14.32 +22 24 52.1 – V I52
2020-10-24 07:44:30 C 00 46 14.97 +22 25 21.9 – V I52
2020-10-24 07:47:24 C 00 46 15.66 +22 25 51.6 – V I52