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
1998-09-28 08:31:41 C 01 25 02.57 +39 07 33.2 c 699
1998-09-28 09:00:16 C 01 25 00.74 +39 07 01.6 c 699
1998-09-28 09:28:52 C 01 24 58.87 +39 06 30.4 c 699
1998-10-18 04:27:59 C 00 54 07.57 +27 53 36.7 18.4 a 704
1998-10-18 04:57:04 C 00 54 05.81 +27 52 47.5 19.0 a 704
1998-10-18 05:26:02 C 00 54 03.94 +27 51 58.6 19.2 a 704
1998-10-18 05:55:00 C 00 54 02.30 +27 51 09.5 19.3 a 704
1998-10-20 01:33:16 C 00 51 27.43 +26 36 26.7 557
1998-10-20 01:35:36 C 00 51 27.31 +26 36 22.4 557
1998-10-20 01:37:57 C 00 51 27.17 +26 36 18.1 557
1998-10-20 04:42:12 C 00 51 17.18 +26 31 01.3 658
1998-10-20 04:48:38 C 00 51 16.84 +26 30 50.1 658
1998-10-20 04:52:07 C 00 51 16.59 +26 30 44.1 658
1998-10-20 11:53:45 C 00 50 52.26 +26 18 50.1 422
1998-10-20 11:56:34 C 00 50 52.09 +26 18 44.9 422
1998-10-20 11:59:04 C 00 50 51.96 +26 18 40.1 422
1998-10-20 12:00:19 C 00 50 51.87 +26 18 37.3 422
1998-10-20 19:40:03 C 00 50 25.80 +26 05 09.6 557
1998-10-20 19:43:24 C 00 50 25.64 +26 05 03.7 557
1998-10-20 23:07:59 C 00 50 13.61 +25 59 09.8 046
1998-10-20 23:09:19 C 00 50 13.51 +25 59 08.1 046
1998-10-20 23:10:41 C 00 50 13.44 +25 59 05.4 046
1998-10-20 23:12:47 C 00 50 13.31 +25 59 01.5 046
1998-10-21 12:30:35 C 00 49 28.66 +25 36 08.0 422
1998-10-21 12:34:18 C 00 49 28.52 +25 36 01.7 422
1998-10-21 12:35:24 C 00 49 28.30 +25 35 57.9 422
1998-10-21 13:17:11 C 00 49 26.11 +25 34 37.4 z 402
1998-10-21 13:21:11 C 00 49 25.89 +25 34 30.2 z 402
1998-10-21 13:23:11 C 00 49 25.80 +25 34 26.9 z 402
1998-10-21 18:58:32 C 00 49 07.41 +25 24 39.8 557
1998-10-21 19:00:22 C 00 49 07.30 +25 24 36.9 557
1998-10-21 19:02:14 C 00 49 07.21 +25 24 32.9 557
1998-10-21 21:49:39 C 00 48 57.70 +25 19 43.8 z 620
1998-10-21 22:00:19 C 00 48 57.12 +25 19 25.2 z 620
1998-10-21 22:15:29 C 00 48 56.30 +25 18 58.7 z 620
1998-10-22 05:50:53 C 00 48 31.30 +25 05 42.5 658
1998-10-22 05:59:48 C 00 48 30.81 +25 05 27.2 658
1998-10-22 06:02:01 C 00 48 30.67 +25 05 23.5 658
1998-10-23 21:33:31 C 00 46 23.78 +23 56 11.1 118
1998-10-23 21:37:48 C 00 46 23.58 +23 56 03.8 118
1998-10-24 22:39:37 C 00 45 06.23 +23 12 05.4 118
1998-10-24 22:52:24 C 00 45 05.59 +23 11 42.6 118
1998-10-25 13:01:44 C 00 44 23.38 +22 46 52.4 z 402
1998-10-25 13:03:44 C 00 44 23.29 +22 46 48.6 z 402
1998-10-25 13:05:45 C 00 44 23.18 +22 46 45.0 z 402
1998-10-27 09:33:02 C 00 42 15.11 +21 28 34.5 658
1998-10-27 09:39:10 C 00 42 14.85 +21 28 23.9 658
1998-10-28 21:26:09 C 00 40 38.56 +20 25 48.6 z 587
1998-10-28 21:30:35 C 00 40 38.29 +20 25 41.4 z 587
1998-10-29 14:54:29 C 00 39 53.25 +19 55 23.6 360