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
2018-11-24 16:00:17 S 00 06 04.57 -18 50 11.8 L C51
2018-11-24 19:08:47 S 00 05 17.98 -18 54 37.5 L C51
2018-11-24 20:43:02 S 00 04 54.67 -18 56 49.6 L C51
2018-11-24 23:51:21 S 00 04 07.92 -19 01 12.4 L C51
2018-11-26 03:38:32 C 23 57 10.28 -19 40 01.0 o 691
2018-11-26 03:50:14 C 23 57 07.24 -19 40 16.6 o 691
2018-11-26 04:01:37 C 23 57 04.29 -19 40 32.2 o 691
2018-11-27 02:53:01 C 23 51 15.86 -20 11 29.8 o 691
2018-11-27 03:08:41 C 23 51 11.77 -20 11 50.9 o 691
2018-11-27 03:24:11 C 23 51 07.66 -20 12 11.7 o 691
2018-11-28 04:02:09 C 23 44 46.14 -20 44 46.5 V 703
2018-11-28 04:09:52 C 23 44 44.04 -20 44 57.3 V 703
2018-11-28 04:17:37 C 23 44 41.89 -20 45 07.1 V 703
2018-11-28 04:25:22 C 23 44 39.93 -20 45 18.4 V 703
2018-11-29 03:15:16 C 23 38 41.83 -21 14 47.8 V I52
2018-11-29 03:18:48 C 23 38 40.92 -21 14 52.5 V I52
2018-11-29 03:22:36 C 23 38 39.89 -21 14 57.1 V I52
2018-12-04 02:31:43 C 23 06 14.55 -23 36 12.1 o 691
2018-12-04 02:33:09 C 23 06 14.14 -23 36 13.6 o 691
2018-12-04 02:42:57 C 23 06 11.31 -23 36 23.9 o 691
2018-12-04 02:49:27 C 23 06 09.41 -23 36 32.2 V I52
2018-12-04 02:55:16 C 23 06 07.74 -23 36 38.3 V I52
2018-12-04 02:59:29 C 23 06 06.58 -23 36 42.5 V I52
2018-12-09 02:51:06 C 22 31 15.20 -25 34 40.9 V I52
2018-12-09 02:51:26 C 22 31 15.11 -25 34 41.5 V I52
2018-12-09 02:54:41 C 22 31 14.11 -25 34 43.4 V I52
2018-12-09 02:55:01 C 22 31 13.97 -25 34 44.1 V I52
2019-05-08 14:18:36 C 21 37 59.478 -11 57 22.78 V F51
2019-05-08 14:32:18 C 21 37 59.706 -11 57 22.01 V F51
2019-05-08 14:39:05 C 21 37 59.820 -11 57 21.46 V F51
2019-06-28 13:06:37 C 21 14 10.293 -14 35 00.54 V F51
2019-06-28 13:23:21 C 21 14 09.264 -14 35 05.62 V F51
2019-07-04 12:27:40 C 21 05 30.973 -15 20 48.82 V F51
2019-07-04 12:44:33 C 21 05 29.893 -15 20 54.37 V F51
2019-07-04 13:01:25 C 21 05 28.794 -15 21 00.03 V F51
2019-07-07 11:16:28 C 21 00 56.106 -15 44 20.22 V F51
2019-07-29 10:21:11 C 20 24 38.563 -18 34 16.10 V F51
2019-07-29 10:51:41 C 20 24 36.475 -18 34 25.00 V F51
2019-07-29 11:06:57 C 20 24 35.441 -18 34 29.34 V F51