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
2011-09-26 10:19:05 C 00 48 21.230 -02 39 34.51 V F51
2011-09-26 11:08:44 C 00 48 18.405 -02 39 55.71 V F51
2011-09-26 11:27:26 C 00 48 17.325 -02 40 03.89 V F51
2011-09-26 11:29:20 C 00 48 17.227 -02 40 04.82 V F51
2011-10-16 09:14:37 C 00 19 00.537 -06 09 18.63 V F51
2011-10-16 09:31:58 C 00 18 59.399 -06 09 26.08 V F51
2018-10-18 08:30:10 C 02 29 45.16 +00 56 19.8 V G96
2018-10-18 08:37:33 C 02 29 44.59 +00 56 13.3 V G96
2018-10-18 08:44:54 C 02 29 44.03 +00 56 06.7 V G96
2018-10-18 08:52:16 C 02 29 43.47 +00 56 00.1 V G96
2018-10-18 10:05:13 C 02 29 37.85 +00 54 55.7 V I52
2018-10-18 10:10:14 C 02 29 37.49 +00 54 50.7 V I52
2018-10-18 10:11:20 C 02 29 37.39 +00 54 50.0 V I52
2018-10-18 10:16:20 C 02 29 37.00 +00 54 46.0 V I52
2018-10-19 05:35:46 C 02 28 10.15 +00 37 26.3 u H21
2018-10-19 05:39:41 C 02 28 09.85 +00 37 23.0 u H21
2018-10-19 05:46:39 C 02 28 09.27 +00 37 16.8 u H21
2018-10-19 21:04:52 C 02 26 57.72 +00 23 13.0 V L01
2018-10-19 21:09:55 C 02 26 57.27 +00 23 08.8 V L01
2018-10-19 21:11:36 C 02 26 57.13 +00 23 07.1 V L01
2018-10-20 00:53:04 C 02 26 38.90 +00 19 42.1 19.4 V 104
2018-10-20 01:01:37 C 02 26 38.21 +00 19 33.8 19.8 V 104
2018-10-20 01:10:09 C 02 26 37.51 +00 19 26.0 19.6 V 104
2018-10-20 08:26:29 C 02 26 02.37 +00 12 40.4 o 691
2018-10-20 08:29:43 C 02 26 02.09 +00 12 37.7 o 691
2018-10-21 09:32:17 C 02 23 56.37 -00 11 18.5 V H01
2018-10-21 09:37:55 C 02 23 55.87 -00 11 24.0 V H01
2018-10-21 09:52:41 C 02 23 54.56 -00 11 38.4 V H01
2018-10-21 10:02:16 C 02 23 53.71 -00 11 47.7 V H01
2018-10-27 06:33:55 C 02 10 05.15 -02 40 45.8 V I52
2018-10-27 06:38:19 C 02 10 04.70 -02 40 50.1 V I52
2018-10-27 06:40:57 C 02 10 04.37 -02 40 53.8 V I52
2018-10-27 10:20:51 C 02 09 38.92 -02 45 06.5 o 691
2018-10-27 10:38:01 C 02 09 36.95 -02 45 26.5 o 691
2018-10-27 10:54:35 C 02 09 35.04 -02 45 45.2 o 691
2018-10-28 06:47:38 C 02 07 19.37 -03 08 59.0 V I52
2018-10-28 06:51:38 C 02 07 18.99 -03 09 03.8 V I52
2018-10-28 06:56:42 C 02 07 18.38 -03 09 09.5 V I52
2018-10-28 10:58:39 C 02 06 49.25 -03 13 56.0 o 691
2018-10-28 11:13:33 C 02 06 47.47 -03 14 12.9 o 691
2018-10-28 11:28:46 C 02 06 45.65 -03 14 31.5 o 691
2018-11-01 03:05:13 C 01 55 43.78 -05 03 19.3 V I52
2018-11-01 03:09:04 C 01 55 43.21 -05 03 23.1 V I52
2018-11-01 03:11:06 C 01 55 42.96 -05 03 25.7 V I52
2018-11-01 05:16:26 C 01 55 24.84 -05 05 50.4 u 807
2018-11-01 05:19:07 C 01 55 24.46 -05 05 53.8 u 807
2018-11-01 05:21:47 C 01 55 24.08 -05 05 57.3 u 807
2018-11-01 15:00:06 C 01 54 05.37 -05 18 49.3 q D29
2018-11-01 15:20:29 C 01 54 02.47 -05 19 16.0 q D29
2018-11-01 15:40:51 C 01 53 59.57 -05 19 42.6 q D29