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
2009-05-06 01:22:25 C 18 20 34.84 +32 24 06.0 r J51
2009-05-06 01:28:26 C 18 20 34.80 +32 24 27.4 r J51
2009-05-09 00:41:54 C 18 19 50.01 +36 20 41.1 w B40
2009-05-09 00:50:05 C 18 19 49.85 +36 21 07.5 w B40
2009-05-09 00:51:46 C 18 19 49.70 +36 21 13.0 w B40
2009-05-09 00:56:25 C 18 19 49.73 +36 21 27.2 w B40
2009-05-09 00:57:56 C 18 19 49.64 +36 21 31.6 w B40
2009-05-11 00:07:04 C 18 19 02.77 +38 45 21.9 w B40
2009-05-11 00:12:46 C 18 19 02.67 +38 45 38.5 w B40
2009-05-11 00:18:10 C 18 19 02.52 +38 45 54.8 w B40
2009-05-12 22:27:25 C 18 18 02.71 +40 57 10.8 16.8 r C20
2009-05-16 00:40:11 C 18 15 58.22 +44 09 20.5 17.6 o C20
2009-05-18 22:02:34 C 18 13 33.49 +46 48 46.9 o A13
2009-05-18 22:41:10 C 18 13 31.90 +46 50 12.6 o A13
2009-05-21 02:14:01 C 18 11 23.99 +48 36 51.0 v B40
2009-05-21 02:29:01 C 18 11 23.23 +48 37 20.5 v B40
2009-05-23 23:16:20 C 18 08 11.75 +50 44 46.8 17.8 o C20
2009-05-28 20:21:24 C 18 01 53.47 +53 46 15.6 18.0 o C20
2009-05-28 21:57:57 C 18 01 48.04 +53 48 27.3 o B88
2009-05-28 22:06:09 C 18 01 47.45 +53 48 38.9 o B88
2009-05-28 22:14:19 C 18 01 46.99 +53 48 50.3 o B88
2009-05-28 22:41:52 C 18 01 45.30 +53 49 27.3 o A13
2009-05-28 22:43:47 C 18 01 45.18 +53 49 30.0 o A13
2009-05-28 22:45:42 C 18 01 45.07 +53 49 32.7 o A13
2009-05-28 23:10:01 C 18 01 43.54 +53 50 06.3 o A13
2009-05-29 23:23:34 C 18 00 17.08 +54 22 21.8 18.1 o C20
2009-05-30 07:05:19 C 17 59 50.19 +54 32 17.4 17.2 c 704
2009-05-30 07:20:19 C 17 59 49.25 +54 32 36.6 17.7 c 704
2009-05-30 07:35:13 C 17 59 48.25 +54 32 55.8 17.6 c 704
2009-05-31 02:04:17 C 17 58 40.72 +54 56 02.0 o J51
2009-05-31 02:14:47 C 17 58 40.02 +54 56 14.7 o J51
2009-05-31 02:25:16 C 17 58 39.32 +54 56 27.6 o J51
2009-06-02 20:49:58 C 17 54 30.25 +56 11 44.7 v 160
2009-06-02 20:53:18 C 17 54 29.99 +56 11 48.3 v 160
2009-06-02 20:57:27 C 17 54 29.72 +56 11 52.8 v 160
2009-06-02 21:02:11 C 17 54 29.41 +56 11 58.0 v 160
2009-06-02 21:05:32 C 17 54 29.17 +56 12 01.5 v 160
2009-06-02 21:30:03 C 17 54 27.59 +56 12 26.0 o A13
2009-06-02 22:05:16 C 17 54 25.17 +56 13 04.5 o A13
2009-06-02 22:42:19 C 17 54 22.65 +56 13 44.2 o A13
2009-06-02 22:59:04 C 17 54 21.50 +56 14 02.0 o A13
2009-06-12 22:26:43 C 17 38 19.89 +59 19 58.5 o A13
2009-06-12 23:07:59 C 17 38 16.92 +59 20 20.7 o A13
2009-07-29 04:41:40 C 17 05 03.46 +56 12 30.7 19.8 c 704
2009-07-29 04:57:06 C 17 05 03.56 +56 12 21.3 19.4 c 704
2009-07-29 05:12:37 C 17 05 03.89 +56 12 10.8 19.4 c 704
2009-07-29 05:28:05 C 17 05 04.17 +56 12 01.3 19.6 c 704
2011-04-18 02:24:19 C 20 10 33.13 +17 51 43.9 u 160
2011-04-18 02:27:02 C 20 10 33.53 +17 51 50.0 u 160
2011-04-18 02:29:33 C 20 10 33.73 +17 51 54.9 u 160