2018 UA1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6240927868 ± 2.74e-08
Semi-major axis (a)2.5284221627 AU ± 5.16e-09
Inclination (i)18.44643034° ± 1.04e-05
Long. of Asc. Node (Ω)358.93686062° ± 3.15e-05
Arg. of Perihelion (ω)348.28705109° ± 3.42e-05
Mean Anomaly (M)282.38448573° ± 2.33e-06
Mean Motion (n)0.2451533846°/day ± 7.50e-10
Perihelion dist (q)0.95045213 AU ± 6.92e-08
Aphelion dist (Q)4.10639220 AU ± 6.97e-08
Orbital Period4.02044738 yr ± 1.23e-08
Physical Parameters
H (abs. magnitude)19.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.250″
Uncertainty0
Orbit TypeApollo
MOID0.045153 AU
Observations Used215
Oppositions9
Arc Total2010-2022
First Observation Used2010-10-23
Last Observation Used2022-11-23
Observations (230)
Date Type RA Dec Mag Band Observatory
2018-10-18 20:16:39 C 19 46 08.18 +55 33 02.3 V K38
2018-10-18 20:19:43 C 19 46 09.57 +55 33 14.3 V 204
2018-10-18 20:25:46 C 19 46 12.30 +55 33 38.0 V 204
2018-10-18 20:31:49 C 19 46 15.02 +55 34 01.8 V 204
2018-10-18 22:05:12 C 19 46 57.98 +55 40 05.8 V Z80
2018-10-18 22:07:36 C 19 46 59.08 +55 40 13.8 V Z80
2018-10-18 22:09:16 C 19 46 59.83 +55 40 19.6 V Z80
2018-10-18 22:11:39 C 19 47 00.86 +55 40 30.1 V Z80
2018-10-19 17:49:48 C 19 56 08.78 +56 55 10.0 V L01
2018-10-19 17:51:21 C 19 56 09.46 +56 55 15.5 V L01
2018-10-19 17:51:39 C 19 56 09.58 +56 55 16.6 V L01
2018-10-19 17:53:31 C 19 56 10.37 +56 55 22.9 V L01
2018-10-19 17:55:23 C 19 56 11.23 +56 55 29.9 V L01
2018-10-19 17:59:06 C 19 56 12.87 +56 55 43.3 V L01
2018-10-19 18:02:42 C 19 56 14.48 +56 55 55.6 V L01
2018-10-19 18:08:34 C 19 56 17.41 +56 56 16.4 V 587
2018-10-19 18:09:54 C 19 56 18.01 +56 56 21.2 V 587
2018-10-19 18:11:13 C 19 56 18.60 +56 56 26.0 V 587
2018-10-19 18:18:32 C 19 56 22.73 +56 56 47.0 V J95
2018-10-19 18:26:20 C 19 56 26.19 +56 57 14.7 V J95
2018-10-19 18:30:59 C 19 56 28.24 +56 57 31.3 V J95
2018-10-19 18:53:03 C 19 56 36.77 +56 58 52.6 V 595
2018-10-19 18:57:14 C 19 56 38.57 +56 59 06.8 V 595
2018-10-19 19:31:57 C 19 56 55.14 +57 01 06.5 q 970
2018-10-19 19:36:21 C 19 56 57.01 +57 01 20.9 q 970
2018-10-19 20:56:20 C 19 57 32.67 +57 06 00.6 V J69
2018-10-19 21:10:21 C 19 57 39.02 +57 06 48.0 V J69
2018-10-19 22:02:54 C 19 58 02.65 +57 09 47.0 V J69
2018-10-19 22:16:54 C 19 58 08.96 +57 10 34.1 V J69
2018-10-20 03:11:33 C 20 00 26.45 +57 27 54.4 18.1 r 718
2018-10-20 03:14:08 C 20 00 27.55 +57 28 02.9 18.0 r 718
2018-10-20 03:16:42 C 20 00 28.78 +57 28 10.8 17.7 r 718
2018-10-20 03:19:16 C 20 00 29.83 +57 28 18.7 17.4 r 718
2018-10-20 03:21:49 C 20 00 31.02 +57 28 28.2 17.9 r 718
2018-10-20 03:24:22 C 20 00 32.13 +57 28 36.7 18.0 r 718
2018-10-20 03:35:37 C 20 00 36.66 +57 29 19.9 V I52
2018-10-20 03:36:22 C 20 00 36.95 +57 29 22.3 V I52
2018-10-20 03:37:06 C 20 00 37.27 +57 29 24.9 V I52
2018-10-20 03:37:50 C 20 00 37.61 +57 29 27.2 V I52
2018-10-20 04:38:57 C 20 01 06.00 +57 32 39.6 U U63
2018-10-20 04:40:18 C 20 01 06.61 +57 32 44.4 U U63
2018-10-20 04:41:26 C 20 01 07.08 +57 32 48.5 U U63
2018-10-20 04:43:50 C 20 01 08.14 +57 32 55.7 U U63
2018-10-20 04:50:50 C 20 01 11.27 +57 33 19.0 U U63
2018-10-20 04:52:12 C 20 01 11.89 +57 33 23.7 U U63
2018-10-20 05:19:34 C 20 01 24.12 +57 34 52.4 U U63
2018-10-20 05:24:45 C 20 01 26.35 +57 35 09.8 U U63
2018-10-20 17:42:32 C 20 07 08.43 +58 15 18.1 V 595
2018-10-20 17:46:15 C 20 07 10.50 +58 15 30.0 18.1 U B04
2018-10-20 17:46:18 C 20 07 10.05 +58 15 29.7 V 595