1998 US18

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6775273949 ± 1.14e-06
Semi-major axis (a)2.6033485947 AU ± 9.02e-08
Inclination (i)9.66104475° ± 6.12e-05
Long. of Asc. Node (Ω)207.10339891° ± 2.44e-05
Arg. of Perihelion (ω)115.53077213° ± 3.70e-04
Mean Anomaly (M)168.38009594° ± 5.73e-05
Mean Motion (n)0.2346463422°/day ± 1.22e-08
Perihelion dist (q)0.83950860 AU ± 2.98e-06
Aphelion dist (Q)4.36718859 AU ± 2.98e-06
Orbital Period4.20047581 yr ± 2.18e-07
Physical Parameters
H (abs. magnitude)20.90
G (slope)0.15
Alternative Designations

2019 VC1

Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.451″
Uncertainty0
Orbit TypeApollo
MOID0.031057 AU
Observations Used66
Oppositions16
Arc Total1998-2019
First Observation Used1998-10-25
Last Observation Used2019-11-05
Observations (68)
Date Type RA Dec Mag Band Observatory
2019-11-02 02:19:11 C 21 26 38.15 -13 20 36.7 q H36
2019-11-03 00:50:37 C 21 37 25.84 -13 08 36.2 q H36
2019-11-03 01:00:28 C 21 37 30.42 -13 08 30.1 V 734
2019-11-03 01:07:37 C 21 37 33.82 -13 08 25.8 V 734
2019-11-03 01:12:17 C 21 37 35.89 -13 08 22.7 q H36
2019-11-03 01:29:45 C 21 37 44.04 -13 08 13.0 V 734
2019-11-03 01:33:30 C 21 37 45.82 -13 08 10.7 q H36
2019-11-03 01:37:05 C 21 37 47.48 -13 08 08.8 V 734
2019-11-04 02:01:38 C 21 49 09.37 -12 53 20.1 V H01
2019-11-04 02:06:18 C 21 49 11.49 -12 53 17.0 V H01
2019-11-04 02:10:14 C 21 49 13.36 -12 53 13.8 V I52
2019-11-04 02:11:39 C 21 49 13.98 -12 53 13.0 V I52
2019-11-04 02:13:03 C 21 49 14.63 -12 53 11.8 V I52
2019-11-04 02:21:27 C 21 49 18.29 -12 53 07.3 V H01
2019-11-04 02:33:05 C 21 49 23.54 -12 53 00.0 V H01
2019-11-05 05:47:44 C 22 01 37.49 -12 34 35.2 o 291
2019-11-05 05:58:39 C 22 01 42.27 -12 34 27.1 o 291
2019-11-05 06:09:36 C 22 01 47.03 -12 34 18.9 o 291