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
1998-10-29 14:57:59 C 00 39 53.09 +19 55 17.7 360
1998-10-29 15:03:29 C 00 39 52.85 +19 55 07.7 360
1998-10-30 07:27:14 C 00 39 11.98 +19 26 38.7 658
1998-10-30 07:29:55 C 00 39 11.86 +19 26 34.0 658
1998-10-30 07:35:30 C 00 39 11.62 +19 26 24.3 658
1998-10-31 12:54:39 C 00 38 01.62 +18 35 51.9 z 402
1998-10-31 12:56:39 C 00 38 01.57 +18 35 49.2 z 402
1998-10-31 12:58:39 C 00 38 01.55 +18 35 45.3 z 402
1998-11-08 22:27:02 C 00 31 49.11 +13 04 48.9 118
1998-11-08 22:31:16 C 00 31 48.96 +13 04 42.9 118
1998-11-14 10:25:45 C 00 29 29.89 +09 50 07.7 z 402
1998-11-14 10:27:46 C 00 29 29.83 +09 50 04.8 z 402
1998-11-14 10:29:46 C 00 29 29.78 +09 50 02.3 z 402
1998-11-21 12:13:20 C 00 28 26.73 +06 11 25.6 b 426
1998-11-21 12:30:02 C 00 28 26.69 +06 11 06.1 b 426
1998-11-21 12:46:39 C 00 28 26.68 +06 10 47.4 b 426
1998-11-23 13:09:00 C 00 28 31.62 +05 15 08.7 360
1998-11-23 13:14:59 C 00 28 31.62 +05 15 01.9 360
1998-11-23 13:20:45 C 00 28 31.63 +05 14 55.1 360
2000-07-08 19:44:14 C 02 02 50.03 +35 16 13.9 413
2000-07-08 19:49:14 C 02 02 50.44 +35 16 15.3 413
2000-08-02 00:36:14 C 02 43 11.78 +35 49 45.6 540
2000-08-02 00:57:23 C 02 43 13.13 +35 49 42.5 540
2000-08-02 01:17:13 C 02 43 14.31 +35 49 43.6 540
2000-09-27 08:20:00 C 03 17 29.13 +26 52 38.6 19.2 c 704
2000-09-27 08:41:01 C 03 17 28.70 +26 52 18.5 19.3 c 704
2000-09-27 09:02:17 C 03 17 27.99 +26 51 57.9 19.0 c 704
2000-09-27 09:23:19 C 03 17 27.46 +26 51 38.2 19.4 c 704
2000-10-21 20:46:03 C 02 50 01.90 +14 08 41.5 18.7 b 120
2000-10-21 21:11:59 C 02 50 00.22 +14 08 01.2 b 120
2000-10-21 21:39:04 C 02 49 58.42 +14 07 17.5 b 120
2000-10-22 22:04:34 C 02 48 22.03 +13 27 52.9 18.8 b 120
2000-10-22 22:36:33 C 02 48 19.74 +13 27 01.5 b 120
2000-10-22 23:02:30 C 02 48 18.06 +13 26 20.1 b 120
2000-10-24 08:24:44 C 02 46 04.21 +12 31 57.1 18.1 c 704
2000-10-24 09:03:28 C 02 46 01.53 +12 30 53.8 18.5 c 704
2000-10-24 09:22:48 C 02 46 00.20 +12 30 22.1 18.5 c 704
2000-10-25 07:01:24 C 02 44 32.83 +11 54 45.6 17.6 c 704
2000-10-25 07:21:03 C 02 44 31.47 +11 54 13.2 18.2 c 704
2000-10-25 07:40:43 C 02 44 30.07 +11 53 41.0 17.6 c 704
2000-10-25 08:00:42 C 02 44 28.67 +11 53 07.8 17.3 c 704
2000-10-25 08:20:43 C 02 44 27.22 +11 52 34.8 17.6 c 704
2000-10-31 06:45:58 C 02 34 38.80 +07 55 20.0 18.4 c 704
2000-10-31 07:06:03 C 02 34 37.34 +07 54 46.6 18.7 c 704
2000-10-31 07:27:27 C 02 34 35.80 +07 54 10.6 18.5 c 704
2000-10-31 07:47:28 C 02 34 34.37 +07 53 36.8 17.8 c 704
2000-10-31 08:07:36 C 02 34 32.92 +07 53 03.7 18.1 c 704
2000-11-01 06:33:09 C 02 33 00.05 +07 15 41.5 17.8 c 704
2000-11-01 06:53:15 C 02 32 58.57 +07 15 08.3 19.5 c 704
2000-11-01 06:58:25 C 02 32 58.17 +07 14 59.5 17.8 c 704