159399 (1998 UL1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2139509061 ± 8.61e-09
Semi-major axis (a)1.5269676489 AU ± 5.31e-10
Inclination (i)41.96806947° ± 8.25e-07
Long. of Asc. Node (Ω)214.84517905° ± 4.95e-07
Arg. of Perihelion (ω)353.26133400° ± 1.29e-06
Mean Anomaly (M)298.21637405° ± 1.38e-06
Mean Motion (n)0.5223571242°/day ± 2.72e-10
Perihelion dist (q)1.20027154 AU ± 1.32e-08
Aphelion dist (Q)1.85366376 AU ± 1.32e-08
Orbital Period1.88688205 yr ± 9.84e-10
Physical Parameters
H (abs. magnitude)16.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.058″
Uncertainty0
Orbit TypeAmor
MOID0.195291 AU
Observations Used1813
Gaia Obs Used59
Oppositions9
Arc Total1998-2017
First Observation Used1998-09-28
Last Observation Used2024-12-09
Observations (1949)
Date Type RA Dec Mag Band Observatory
2024-05-13 21:48:59 C 11 45 51.95 +15 25 30.2 M32
2024-05-14 05:21:19 C 11 46 50.909 +15 53 30.70 V 703
2024-05-14 05:24:37 C 11 46 51.305 +15 53 43.04 V 703
2024-05-14 05:27:55 C 11 46 51.726 +15 53 55.25 V 703
2024-05-14 05:31:12 C 11 46 52.136 +15 54 07.20 V 703
2024-05-15 03:45:14 C 11 49 44.965 +17 13 40.76 V G96
2024-05-15 03:53:21 C 11 49 45.959 +17 14 09.17 V G96
2024-05-15 04:01:28 C 11 49 46.945 +17 14 37.43 V G96
2024-05-15 04:11:00 C 11 49 48.115 +17 15 10.62 V G96
2024-05-15 08:53:03 C 11 50 23.621 +17 31 32.41 V T05
2024-05-15 08:58:15 C 11 50 24.252 +17 31 50.30 V T05
2024-05-15 09:26:21 C 11 50 27.698 +17 33 26.68 V T05
2024-05-15 20:38:23 C 11 51 54.11 +18 11 21.8 M32
2024-05-15 20:41:17 C 11 51 54.47 +18 11 31.5 M32
2024-05-15 20:44:11 C 11 51 54.83 +18 11 41.2 M32
2024-05-15 20:47:06 C 11 51 55.19 +18 11 51.0 M32
2024-05-15 20:50:00 C 11 51 55.55 +18 12 00.6 M32
2024-05-15 21:25:41 C 11 51 59.87 +18 13 59.5 X L18
2024-05-15 21:27:06 C 11 52 00.07 +18 14 04.1 X L18
2024-05-15 21:28:31 C 11 52 00.25 +18 14 08.7 X L18
2024-05-15 21:29:55 C 11 52 00.41 +18 14 13.5 X L18
2024-05-15 21:31:20 C 11 52 00.59 +18 14 18.4 X L18
2024-05-20 08:23:49 C 12 05 19.315 +23 31 15.96 V T05
2024-05-20 08:24:28 C 12 05 19.378 +23 31 17.40 V T05
2024-05-20 08:28:23 C 12 05 19.850 +23 31 27.62 V T05
2024-05-20 08:31:55 C 12 05 20.251 +23 31 36.88 V T05
2024-05-20 08:37:51 C 12 05 20.971 +23 31 52.28 V T05
2024-05-20 08:54:14 C 12 05 22.824 +23 32 34.04 V T05
2024-05-20 08:55:32 C 12 05 23.009 +23 32 37.79 V T05
2024-05-21 01:20:10 S 12 07 23.37 +24 14 26.6 L C51
2024-05-21 04:23:54 S 12 07 45.55 +24 22 05.5 L C51
2024-05-21 06:48:49 C 12 08 01.842 +24 27 57.64 V 703
2024-05-21 06:52:05 C 12 08 02.234 +24 28 05.48 V 703
2024-05-21 06:55:20 C 12 08 02.612 +24 28 13.76 V 703
2024-05-21 06:58:36 C 12 08 02.972 +24 28 21.47 V 703
2024-05-21 07:29:07 S 12 08 07.89 +24 29 42.3 L C51
2024-05-21 07:58:16 C 12 08 10.670 +24 30 55.55 V T08
2024-05-21 08:02:56 C 12 08 11.222 +24 31 06.92 V T08
2024-05-21 08:11:45 C 12 08 12.221 +24 31 28.56 V T08
2024-05-21 08:26:36 C 12 08 13.930 +24 32 04.74 V T08
2024-05-21 10:33:46 S 12 08 30.10 +24 37 14.6 L C51
2024-05-21 12:05:16 S 12 08 41.10 +24 40 58.9 L C51
2024-05-21 13:37:30 S 12 08 52.20 +24 44 43.0 L C51
2024-05-21 15:10:28 S 12 09 03.36 +24 48 27.1 L C51
2024-05-21 16:42:42 S 12 09 14.43 +24 52 09.5 L C51
2024-05-21 18:15:07 S 12 09 25.52 +24 55 51.3 L C51
2024-05-21 19:47:21 S 12 09 36.56 +24 59 32.2 L C51
2024-05-22 00:24:02 S 12 10 09.70 +25 10 29.7 L C51
2024-05-22 03:27:57 S 12 10 31.68 +25 17 43.5 L C51
2024-05-22 06:33:09 S 12 10 53.77 +25 24 55.0 L C51