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
2015-09-25 05:45:31 C 01 52 01.84 +38 26 29.0 q 703
2015-09-25 05:53:27 C 01 52 01.39 +38 26 22.9 q 703
2015-09-25 05:54:10 C 01 52 01.34 +38 26 22.1 q 703
2015-09-25 06:02:05 C 01 52 00.96 +38 26 15.0 q 703
2015-09-25 06:02:48 C 01 52 00.80 +38 26 14.9 q 703
2015-09-25 06:10:41 C 01 52 00.48 +38 26 08.2 q 703
2015-09-25 06:11:26 C 01 52 00.39 +38 26 07.2 q 703
2015-09-27 08:00:52 C 01 49 17.92 +37 39 38.4 u H21
2015-09-27 08:03:58 C 01 49 17.74 +37 39 35.4 u H21
2015-09-27 08:07:04 C 01 49 17.56 +37 39 32.2 u H21
2015-09-27 08:10:10 C 01 49 17.39 +37 39 29.3 u H21
2015-09-27 08:13:16 C 01 49 17.21 +37 39 26.1 u H21
2015-09-27 08:16:22 C 01 49 17.04 +37 39 23.2 u H21
2015-09-27 08:19:28 C 01 49 16.86 +37 39 20.1 u H21
2015-09-27 08:23:04 C 01 49 16.66 +37 39 16.6 u H21
2015-10-11 04:16:14 C 01 28 18.81 +30 53 01.3 q 703
2015-10-11 04:23:30 C 01 28 18.32 +30 52 51.3 q 703
2015-10-11 04:30:46 C 01 28 17.85 +30 52 40.3 q 703
2015-10-11 04:38:02 C 01 28 17.37 +30 52 29.4 q 703
2015-10-11 08:36:36 C 01 28 00.66 +30 46 39.8 q G96
2015-10-11 08:43:58 C 01 28 00.13 +30 46 28.7 q G96
2015-10-11 08:51:21 C 01 27 59.62 +30 46 17.8 q G96
2015-10-11 08:58:43 C 01 27 59.10 +30 46 07.0 q G96
2015-10-12 08:35:37 C 01 26 23.68 +30 10 57.0 R G45
2015-10-12 08:44:00 C 01 26 23.09 +30 10 44.4 R G45
2015-10-12 08:52:18 C 01 26 22.52 +30 10 31.9 R G45
2015-10-12 09:00:41 C 01 26 21.94 +30 10 19.0 R G45
2015-10-14 08:29:13 C 01 23 10.63 +28 57 31.7 R G45
2015-10-14 08:29:19 C 01 23 10.60 +28 57 31.3 R G45
2015-10-14 08:45:36 C 01 23 09.48 +28 57 05.6 R G45
2015-10-14 08:45:42 C 01 23 09.50 +28 57 05.7 R G45
2015-10-14 08:53:05 C 01 23 08.95 +28 56 54.0 R G45
2015-10-14 08:54:23 C 01 23 08.87 +28 56 52.0 R G45
2015-10-14 09:01:28 C 01 23 08.40 +28 56 40.8 R G45
2015-10-14 09:02:47 C 01 23 08.32 +28 56 38.8 R G45
2015-10-19 20:32:13 C 01 14 31.56 +25 22 39.1 c A24
2015-10-19 20:33:15 C 01 14 31.58 +25 22 38.5 c A24
2015-10-19 21:07:04 C 01 14 29.36 +25 21 41.9 q 160
2015-10-19 21:10:01 C 01 14 29.10 +25 21 36.9 q 160
2015-10-19 21:12:57 C 01 14 28.96 +25 21 32.6 q 160
2015-10-19 21:35:59 C 01 14 27.45 +25 20 53.1 c A24
2015-10-19 21:37:01 C 01 14 27.41 +25 20 51.4 c A24
2015-10-20 16:01:50 C 01 13 17.26 +24 49 47.3 q D29
2015-10-20 16:22:09 C 01 13 15.91 +24 49 12.7 q D29
2015-10-20 16:42:29 C 01 13 14.56 +24 48 38.1 q D29
2015-10-23 22:38:34 C 01 08 28.93 +22 34 57.9 q 160
2015-10-23 22:41:34 C 01 08 28.73 +22 34 52.3 q 160
2015-10-23 22:44:36 C 01 08 28.59 +22 34 47.1 q 160
2015-10-24 04:36:42 C 01 08 08.10 +22 24 39.0 q G96
2015-10-24 04:44:04 C 01 08 07.65 +22 24 26.3 q G96