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
2011-05-23 01:49:53 C 21 16 21.30 +42 05 03.4 c A24
2011-05-23 01:51:57 C 21 16 21.40 +42 05 05.5 c A24
2011-05-23 02:07:14 C 21 16 22.29 +42 05 28.1 c A24
2011-05-23 02:09:18 C 21 16 22.45 +42 05 30.6 c A24
2011-05-24 13:56:43 C 21 18 32.897 +42 56 20.65 L F51
2011-05-24 14:05:53 C 21 18 33.428 +42 56 33.59 L F51
2011-08-06 10:56:22 C 21 11 04.014 +63 41 36.07 L F51
2011-08-06 11:11:20 C 21 11 02.935 +63 41 33.21 L F51
2011-08-10 10:33:19 C 21 04 42.871 +63 18 45.15 L F51
2011-08-10 10:49:42 C 21 04 41.726 +63 18 40.18 L F51
2011-08-21 21:07:26 C 20 48 24.69 +61 05 24.8 c A24
2011-08-21 21:09:31 C 20 48 24.55 +61 05 25.1 c A24
2011-08-22 21:15:33 C 20 47 12.80 +60 48 56.9 c A24
2011-08-22 22:21:25 C 20 47 09.20 +60 48 08.9 c A24
2011-09-20 22:52:42 C 20 37 01.08 +47 58 36.3 c A24
2011-09-20 22:54:48 C 20 37 01.09 +47 58 33.1 c A24
2011-09-22 20:42:41 C 20 37 57.79 +46 52 28.1 c A24
2011-09-22 20:44:45 C 20 37 57.96 +46 52 24.9 c A24
2011-09-22 22:10:56 C 20 37 59.66 +46 50 19.0 c A24
2011-09-22 22:13:04 C 20 37 59.71 +46 50 15.8 c A24
2011-09-25 06:15:28 C 20 39 23.282 +45 27 47.08 L F51
2011-09-25 06:32:48 C 20 39 23.701 +45 27 21.37 L F51
2011-10-02 20:37:59 C 20 45 29.60 +40 50 10.9 c A24
2011-10-02 20:40:04 C 20 45 29.71 +40 50 07.4 c A24
2011-10-02 21:48:00 C 20 45 32.28 +40 48 21.5 c A24
2011-10-02 21:50:05 C 20 45 32.42 +40 48 18.8 c A24
2011-10-03 20:17:13 C 20 46 27.00 +40 13 34.7 c A24
2011-10-03 20:40:09 C 20 46 27.89 +40 12 58.3 c A24
2011-10-04 20:50:23 C 20 47 28.62 +39 35 29.6 c A24
2011-10-04 20:52:28 C 20 47 28.79 +39 35 25.1 c A24
2011-10-26 17:21:52 C 21 16 24.07 +26 29 31.9 u 240
2011-10-26 17:27:42 C 21 16 24.46 +26 29 24.1 u 240
2011-10-26 17:33:00 C 21 16 24.76 +26 29 16.3 u 240
2011-10-26 17:43:04 C 21 16 25.40 +26 29 03.0 u 240
2011-12-08 05:26:52 C 22 32 18.161 +09 51 28.29 L F51
2011-12-08 05:42:23 C 22 32 19.381 +09 51 19.54 L F51
2011-12-25 02:52:40 C 23 04 54.30 +06 47 52.2 r G96
2011-12-25 03:00:59 C 23 04 54.98 +06 47 49.5 r G96
2011-12-25 03:09:12 C 23 04 55.63 +06 47 47.1 r G96
2011-12-25 03:17:30 C 23 04 56.31 +06 47 44.1 r G96
2013-09-21 09:45:01 C 23 30 10.254 +48 52 37.98 L F51
2013-09-21 10:03:30 C 23 30 09.058 +48 52 16.64 L F51
2013-10-02 20:17:14 C 23 15 29.75 +42 37 10.0 q 046
2013-10-02 20:19:35 C 23 15 29.53 +42 37 06.1 q 046
2013-10-02 20:21:50 C 23 15 29.49 +42 37 03.1 q 046
2013-10-02 20:26:13 C 23 15 29.27 +42 36 55.5 q 046
2013-10-03 19:44:42 C 23 14 29.13 +42 00 21.0 q 046
2013-10-03 19:46:54 C 23 14 29.04 +42 00 17.8 q 046
2013-10-03 19:49:04 C 23 14 28.94 +42 00 14.0 q 046
2013-10-03 19:53:29 C 23 14 28.78 +42 00 07.1 q 046