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
2002-11-16 08:39:12 C 04 03 50.43 -15 24 13.4 c 699
2002-11-21 09:38:36 C 03 55 06.64 -18 17 49.0 19.6 c 644
2002-11-21 10:08:54 C 03 55 04.39 -18 18 30.2 18.8 c 644
2002-11-21 10:40:36 C 03 55 01.99 -18 19 12.7 19.6 c 644
2003-01-12 02:11:24 C 03 02 47.55 -28 07 06.2 19.5 c 644
2003-01-12 02:41:25 C 03 02 47.64 -28 07 02.3 19.8 c 644
2003-01-12 03:11:56 C 03 02 47.73 -28 06 57.9 19.6 c 644
2004-10-08 12:10:18 C 05 59 15.89 -01 44 11.1 o 696
2004-10-08 12:12:16 C 05 59 15.96 -01 44 14.1 o 696
2004-11-06 14:43:07 C 06 10 02.37 -20 42 19.8 r E17
2004-11-06 15:05:04 C 06 10 02.09 -20 42 58.5 r E17
2004-12-14 12:11:50 C 05 25 51.74 -43 12 36.2 r E12
2004-12-14 12:23:49 C 05 25 50.74 -43 12 46.7 r E12
2004-12-14 12:35:48 C 05 25 49.81 -43 12 57.2 r E12
2004-12-14 12:47:50 C 05 25 48.78 -43 13 08.5 r E12
2005-02-04 10:59:00 C 04 26 04.68 -44 17 09.9 r 474
2005-02-04 11:08:39 C 04 26 04.76 -44 17 04.5 r 474
2005-02-04 11:15:30 C 04 26 04.81 -44 17 01.2 r 474
2005-02-04 11:23:00 C 04 26 04.85 -44 16 57.3 r 474
2005-04-05 09:19:41 C 06 03 03.77 -26 58 43.3 r E12
2005-04-05 09:35:22 C 06 03 05.64 -26 58 28.6 r E12
2005-04-05 09:49:19 C 06 03 07.25 -26 58 15.1 r E12
2005-04-05 10:03:17 C 06 03 08.83 -26 58 01.5 r E12
2005-04-28 08:39:40 C 07 16 26.98 -17 18 02.4 r 428
2005-04-28 08:58:39 C 07 16 29.82 -17 17 40.2 r 428
2005-04-28 09:01:03 C 07 16 30.07 -17 17 38.1 r 428
2005-05-24 08:01:39 C 08 54 27.81 -05 04 05.7 c 474
2005-05-24 08:03:40 C 08 54 28.01 -05 04 04.0 c 474
2005-05-24 08:05:38 C 08 54 28.43 -05 04 01.0 c 474
2005-05-24 08:10:20 C 08 54 29.12 -05 03 56.0 c 474
2005-05-29 09:17:33 C 09 14 17.06 -02 48 04.4 r E12
2005-05-29 09:28:36 C 09 14 18.77 -02 47 52.1 r E12
2005-05-29 09:39:38 C 09 14 20.60 -02 47 39.8 r E12
2005-05-29 09:50:47 C 09 14 22.42 -02 47 27.8 r E12
2005-06-04 03:58:14 C 09 36 55.11 -00 20 45.4 r 703
2005-06-04 04:07:39 C 09 36 56.62 -00 20 34.7 r 703
2005-06-04 04:17:03 C 09 36 58.28 -00 20 25.4 r 703
2005-06-04 04:26:25 C 09 36 59.72 -00 20 16.6 r 703
2005-06-07 09:04:57 C 09 49 26.67 +00 56 48.6 r E12
2005-06-07 09:18:14 C 09 49 28.80 +00 57 02.1 r E12
2005-06-07 09:31:33 C 09 49 30.94 +00 57 14.7 r E12
2005-06-07 09:44:51 C 09 49 33.03 +00 57 27.5 r E12
2007-03-26 13:05:58 C 07 42 54.36 -59 40 28.3 r E12
2007-03-26 13:20:14 C 07 42 55.94 -59 40 06.4 r E12
2007-03-26 13:34:26 C 07 42 57.49 -59 39 45.0 r E12
2007-03-26 13:48:45 C 07 42 59.00 -59 39 23.2 r E12
2007-04-22 09:46:10 C 09 20 27.13 -30 58 32.3 r E12
2007-04-22 10:01:55 C 09 20 29.79 -30 57 27.8 r E12
2007-04-22 10:17:12 C 09 20 32.31 -30 56 25.0 r E12
2007-04-22 10:32:22 C 09 20 34.87 -30 55 22.5 r E12