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
2015-12-04 04:24:45 C 00 44 36.23 -00 17 39.4 q 703
2015-12-08 01:34:45 C 00 45 55.40 -01 28 25.8 u 807
2015-12-08 01:38:08 C 00 45 55.45 -01 28 28.0 u 807
2015-12-08 01:41:39 C 00 45 55.51 -01 28 30.8 u 807
2015-12-08 01:44:50 C 00 45 55.55 -01 28 33.0 u 807
2015-12-08 01:48:21 C 00 45 55.60 -01 28 35.4 u 807
2015-12-14 05:12:38 C 00 49 00.996 -03 02 01.21 L F51
2015-12-14 05:47:16 C 00 49 01.790 -03 02 20.56 L F51
2015-12-14 06:04:36 C 00 49 02.189 -03 02 30.27 L F51
2015-12-23 01:02:55 C 00 55 20.62 -04 41 03.6 u 807
2015-12-23 01:05:27 C 00 55 20.70 -04 41 04.5 u 807
2015-12-23 01:08:09 C 00 55 20.79 -04 41 05.2 u 807
2015-12-23 01:10:52 C 00 55 20.87 -04 41 06.3 u 807
2015-12-23 01:13:14 C 00 55 20.96 -04 41 07.4 u 807
2015-12-31 01:26:53 C 01 02 43.99 -05 41 50.3 R G45
2015-12-31 01:40:30 C 01 02 44.57 -05 41 54.0 R G45
2015-12-31 01:45:53 C 01 02 44.81 -05 41 55.7 R G45
2015-12-31 01:52:50 C 01 02 45.05 -05 41 57.2 R G45
2016-01-03 05:19:25 C 01 06 01.182 -05 59 20.63 L F51
2016-01-03 05:34:27 C 01 06 01.826 -05 59 23.74 L F51
2016-01-03 05:49:26 C 01 06 02.476 -05 59 26.90 L F51
2016-01-03 06:04:26 C 01 06 03.122 -05 59 29.98 L F51
2016-01-19 05:24:05 C 01 25 26.029 -06 44 42.21 L F51
2016-01-19 05:39:55 C 01 25 26.900 -06 44 42.98 L F51
2016-01-19 06:12:41 C 01 25 28.680 -06 44 44.14 L F51
2017-08-08 13:51:54 C 03 01 30.638 +34 00 21.88 L F51
2017-08-08 14:07:47 C 03 01 31.528 +34 00 20.11 L F51
2017-08-08 14:23:47 C 03 01 32.423 +34 00 17.81 L F51
2017-08-08 14:39:45 C 03 01 33.347 +34 00 16.13 L F51
2017-09-01 13:08:04 C 03 27 39.871 +31 31 00.48 L F51
2017-09-01 13:23:55 C 03 27 40.327 +31 30 53.92 L F51
2017-09-01 13:39:48 C 03 27 40.786 +31 30 47.44 L F51
2017-09-01 13:55:40 C 03 27 41.250 +31 30 40.79 L F51
2017-09-17 13:36:47 C 03 34 35.05 +27 57 24.2 L T08
2017-09-17 13:46:31 C 03 34 35.07 +27 57 16.6 L T08
2017-09-17 13:50:20 C 03 34 35.02 +27 57 14.3 L T08
2017-09-17 14:02:32 C 03 34 35.13 +27 57 03.7 L T08
2017-09-28 11:05:35 C 03 32 51.47 +24 16 34.5 q 703
2017-09-28 11:14:00 C 03 32 51.29 +24 16 26.1 q 703
2017-09-28 11:22:19 C 03 32 51.10 +24 16 17.7 q 703
2017-09-28 11:30:37 C 03 32 50.96 +24 16 09.9 q 703
2017-10-01 08:48:33 C 03 31 25.67 +23 05 12.7 q 703
2017-10-01 08:55:36 C 03 31 25.50 +23 05 05.0 q 703
2017-10-01 09:02:37 C 03 31 25.33 +23 04 58.0 q 703
2017-10-01 09:09:38 C 03 31 25.17 +23 04 49.8 q 703
2017-10-13 09:54:11 C 03 21 04.78 +17 08 26.7 U 703
2017-10-13 10:22:52 C 03 21 03.30 +17 07 46.0 U 703
2017-10-16 07:46:33 C 03 17 34.45 +15 27 52.6 U 703
2017-10-16 07:54:11 C 03 17 34.07 +15 27 41.2 U 703
2017-10-16 08:01:44 C 03 17 33.64 +15 27 30.0 U 703