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
2024-05-02 20:05:57 C 11 09 18.000 -06 04 18.30 V M22
2024-05-02 20:12:23 C 11 09 18.936 -06 03 39.06 V M22
2024-05-02 20:20:13 C 11 09 20.028 -06 02 52.76 V M22
2024-05-02 20:57:54 B 11 09 25.23 -05 59 51.8 X L99
2024-05-02 21:00:07 B 11 09 25.51 -05 59 37.9 X L99
2024-05-02 21:02:01 B 11 09 25.78 -05 59 27.8 X L99
2024-05-02 21:03:55 B 11 09 26.06 -05 59 16.6 X L99
2024-05-02 21:05:30 B 11 09 26.25 -05 59 07.2 X L99
2024-05-03 06:17:46 C 11 10 46.389 -05 05 15.13 V U68
2024-05-03 06:22:02 C 11 10 46.983 -05 04 50.45 V U68
2024-05-03 06:33:00 C 11 10 48.447 -05 03 45.44 V U74
2024-05-03 06:38:26 C 11 10 49.191 -05 03 13.85 V U74
2024-05-03 06:48:41 C 11 10 50.648 -05 02 15.35 V U68
2024-05-03 06:52:57 C 11 10 51.268 -05 01 50.58 V U68
2024-05-04 19:44:36 C 11 16 09.29 -01 31 58.2 X G02
2024-05-04 19:49:55 C 11 16 10.01 -01 31 28.5 X G02
2024-05-04 19:54:18 B 11 16 10.38 -01 31 05.1 X L99
2024-05-04 19:54:57 C 11 16 10.70 -01 31 00.3 X G02
2024-05-04 19:56:18 B 11 16 10.65 -01 30 53.7 X L99
2024-05-04 19:58:18 B 11 16 10.92 -01 30 41.5 X L99
2024-05-04 20:00:18 B 11 16 11.16 -01 30 31.7 X L99
2024-05-04 20:02:18 B 11 16 11.44 -01 30 20.3 X L99
2024-05-05 06:05:23 C 11 17 36.769 -00 34 37.85 V G96
2024-05-05 06:12:50 C 11 17 37.784 -00 33 56.95 V G96
2024-05-05 06:20:16 C 11 17 38.792 -00 33 16.09 V G96
2024-05-05 06:27:43 C 11 17 39.808 -00 32 35.20 V G96
2024-05-05 20:10:09 C 11 19 36.81 +00 41 51.0 M32
2024-05-05 20:11:05 C 11 19 36.94 +00 41 56.0 M32
2024-05-05 20:12:02 C 11 19 37.07 +00 42 01.1 M32
2024-05-05 20:12:59 C 11 19 37.20 +00 42 06.2 M32
2024-05-05 20:13:56 C 11 19 37.32 +00 42 11.4 M32
2024-05-05 21:45:16 B 11 19 49.69 +00 50 21.6 X L99
2024-05-05 21:47:19 B 11 19 50.01 +00 50 31.7 X L99
2024-05-05 21:49:22 B 11 19 50.20 +00 50 43.0 X L99
2024-05-05 21:51:25 B 11 19 50.55 +00 50 55.3 X L99
2024-05-05 21:53:28 B 11 19 50.81 +00 51 06.1 X L99
2024-05-06 07:16:24 C 11 21 10.817 +01 41 21.55 V T05
2024-05-06 07:25:14 C 11 21 11.983 +01 42 08.21 V T05
2024-05-06 07:29:47 C 11 21 12.590 +01 42 32.40 V T05
2024-05-06 07:36:25 C 11 21 13.502 +01 43 07.68 V T05
2024-05-06 07:40:58 C 11 21 14.090 +01 43 31.66 V T05
2024-05-06 07:47:37 C 11 21 14.950 +01 44 06.76 V T05
2024-05-06 07:50:13 C 11 21 15.350 +01 44 20.90 V T05
2024-05-06 08:10:48 C 11 21 18.089 +01 46 10.06 V T05
2024-05-06 19:53:03 C 11 22 56.662 +02 47 57.08 V M22
2024-05-06 19:57:42 C 11 22 57.281 +02 48 21.24 V M22
2024-05-06 20:11:56 C 11 22 59.165 +02 49 35.11 V M22
2024-05-06 20:19:53 C 11 23 00.218 +02 50 16.40 V M22
2024-05-08 06:50:21 C 11 27 46.868 +05 43 51.85 V 703
2024-05-08 06:53:40 C 11 27 47.308 +05 44 08.05 V 703