2018 UN1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7931598756 ± 5.10e-08
Semi-major axis (a)2.2512678168 AU ± 9.14e-08
Inclination (i)5.29855500° ± 3.01e-06
Long. of Asc. Node (Ω)129.31542987° ± 1.29e-04
Arg. of Perihelion (ω)27.22257357° ± 1.29e-04
Mean Anomaly (M)8.42602652° ± 4.52e-05
Mean Motion (n)0.2917907577°/day ± 1.78e-08
Perihelion dist (q)0.46565252 AU ± 1.16e-07
Aphelion dist (Q)4.03688312 AU ± 2.00e-07
Orbital Period3.37785299 yr ± 2.06e-07
Physical Parameters
H (abs. magnitude)19.40
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.294″
Uncertainty0
Orbit TypeApollo
MOID0.071658 AU
Observations Used128
Oppositions6
Arc Total2011-2019
First Observation Used2011-09-26
Last Observation Used2019-07-29
Observations (139)
Date Type RA Dec Mag Band Observatory
2018-11-04 06:49:45 C 01 44 50.92 -06 44 41.9 V G96
2018-11-04 06:57:14 C 01 44 49.79 -06 44 51.9 V G96
2018-11-04 07:04:44 C 01 44 48.63 -06 45 03.1 V G96
2018-11-04 07:12:12 C 01 44 47.44 -06 45 13.0 V G96
2018-11-04 09:16:16 C 01 44 28.10 -06 48 03.1 V I52
2018-11-04 09:22:23 C 01 44 27.12 -06 48 12.0 V I52
2018-11-04 09:23:58 C 01 44 26.91 -06 48 14.0 V I52
2018-11-05 10:44:11 C 01 40 31.71 -07 23 32.4 V T08
2018-11-05 10:58:19 C 01 40 29.42 -07 23 51.8 V T08
2018-11-05 11:13:46 C 01 40 26.92 -07 24 12.9 V T08
2018-11-05 11:27:49 C 01 40 24.61 -07 24 33.4 V T08
2018-11-07 05:57:46 C 01 33 31.25 -08 25 19.8 V I52
2018-11-07 06:07:06 C 01 33 29.64 -08 25 33.3 V I52
2018-11-07 06:11:55 C 01 33 28.80 -08 25 40.4 V I52
2018-11-07 06:15:24 C 01 33 28.21 -08 25 45.4 V I52
2018-11-09 05:41:52 C 01 25 18.23 -09 35 16.2 V 703
2018-11-09 05:49:27 C 01 25 16.90 -09 35 28.1 V 703
2018-11-09 05:57:02 C 01 25 15.48 -09 35 39.0 V 703
2018-11-09 06:04:39 C 01 25 14.04 -09 35 49.8 V 703
2018-11-09 10:07:45 C 01 24 30.52 -09 41 47.1 V T08
2018-11-09 10:21:11 C 01 24 28.02 -09 42 06.5 V T08
2018-11-09 10:35:55 C 01 24 25.31 -09 42 28.7 V T08
2018-11-09 10:49:55 C 01 24 22.70 -09 42 49.4 V T08
2018-11-11 07:11:29 C 01 16 15.68 -10 49 21.0 o 291
2018-11-11 07:12:58 C 01 16 15.38 -10 49 23.3 o 291
2018-11-11 07:15:16 C 01 16 14.94 -10 49 26.5 o 291
2018-11-12 06:31:13 C 01 11 49.60 -11 24 41.0 o 691
2018-11-12 06:37:53 C 01 11 48.32 -11 24 50.8 o 691
2018-11-12 06:44:32 C 01 11 46.98 -11 25 01.1 o 691
2018-11-12 07:56:28 C 01 11 33.718 -11 26 47.34 U F52
2018-11-12 08:16:10 C 01 11 29.797 -11 27 17.27 U F52
2018-11-12 08:55:34 C 01 11 21.957 -11 28 17.06 U F52
2018-11-12 10:04:24 C 01 11 08.25 -11 30 01.5 V T05
2018-11-12 10:18:43 C 01 11 05.42 -11 30 23.4 V T05
2018-11-12 10:33:13 C 01 11 02.48 -11 30 45.1 V T05
2018-11-12 10:47:53 C 01 10 59.56 -11 31 07.6 V T05
2018-11-13 09:12:40 C 01 06 36.84 -12 05 15.3 V T08
2018-11-13 09:26:36 C 01 06 33.91 -12 05 37.3 V T08
2018-11-13 09:39:55 C 01 06 31.30 -12 05 56.0 V T08
2018-11-13 09:53:57 C 01 06 28.47 -12 06 18.4 V T08
2018-11-13 20:49:13 C 01 04 18.49 -12 23 07.2 V 204
2018-11-13 20:57:17 C 01 04 16.83 -12 23 19.8 V 204
2018-11-13 21:05:49 C 01 04 15.09 -12 23 32.5 V 204
2018-11-15 21:36:19 C 00 54 17.29 -13 37 47.4 o B67
2018-11-15 21:42:39 C 00 54 15.92 -13 37 56.9 o B67
2018-11-15 21:48:57 C 00 54 14.57 -13 38 06.7 o B67
2018-11-16 03:47:53 C 00 52 59.57 -13 47 12.4 V I52
2018-11-16 03:48:58 C 00 52 59.37 -13 47 14.5 V I52
2018-11-16 03:49:14 C 00 52 59.35 -13 47 14.5 V I52
2018-11-16 03:50:30 C 00 52 59.01 -13 47 17.4 V I52