275545 (1998 UN1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2209465239 ± 2.89e-08
Semi-major axis (a)1.5134686470 AU ± 1.10e-09
Inclination (i)32.42431977° ± 4.83e-06
Long. of Asc. Node (Ω)217.84805156° ± 3.68e-06
Arg. of Perihelion (ω)87.72191665° ± 1.10e-05
Mean Anomaly (M)248.63036815° ± 8.23e-06
Mean Motion (n)0.5293612332°/day ± 5.75e-10
Perihelion dist (q)1.17907301 AU ± 4.38e-08
Aphelion dist (Q)1.84786428 AU ± 4.38e-08
Orbital Period1.86191625 yr ± 2.02e-09
Physical Parameters
H (abs. magnitude)18.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.339″
Uncertainty0
Orbit TypeAmor
MOID0.377078 AU
Observations Used577
Oppositions12
Arc Total1998-2024
First Observation Used1998-10-19
Last Observation Used2024-12-26
Observations (611)
Date Type RA Dec Mag Band Observatory
2024-12-01 12:06:36 C 23 09 56.15 +00 51 47.1 V D29
2024-12-01 12:25:42 C 23 09 58.50 +00 51 32.7 V D29
2024-12-01 12:26:58 C 23 09 58.65 +00 51 32.1 V D29
2024-12-14 02:32:31 C 23 46 06.582 -02 03 00.36 V G96
2024-12-14 02:40:40 C 23 46 07.493 -02 03 03.96 V G96
2024-12-14 02:48:47 C 23 46 08.411 -02 03 06.91 V G96
2024-12-14 02:56:53 C 23 46 09.332 -02 03 10.04 V G96
2024-12-26 02:04:30 C 00 17 38.375 -03 29 30.34 V G96
2024-12-26 02:11:59 C 00 17 39.235 -03 29 32.68 V G96
2024-12-26 02:19:28 C 00 17 39.966 -03 29 33.97 V G96
2024-12-26 02:26:58 C 00 17 40.776 -03 29 35.27 V G96