85818 (1998 XM4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4160289487 ± 3.68e-09
Semi-major axis (a)1.6566352039 AU ± 1.12e-09
Inclination (i)62.71599647° ± 5.04e-07
Long. of Asc. Node (Ω)235.63985899° ± 5.34e-07
Arg. of Perihelion (ω)301.21649960° ± 1.17e-06
Mean Anomaly (M)131.39619181° ± 2.13e-06
Mean Motion (n)0.4622447073°/day ± 4.68e-10
Perihelion dist (q)0.96742700 AU ± 6.12e-09
Aphelion dist (Q)2.34584341 AU ± 6.29e-09
Orbital Period2.13226083 yr ± 2.16e-09
Physical Parameters
H (abs. magnitude)15.42
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.022″
Uncertainty0
Orbit TypeApollo
MOID0.109072 AU
Observations Used1396
Gaia Obs Used123
Oppositions13
Arc Total1993-2025
First Observation Used1993-05-24
Last Observation Used2025-10-24
Observations (1511)
Date Type RA Dec Mag Band Observatory
2025-09-10 03:49:12 C 16 40 49.112 +46 28 13.01 V G96
2025-09-10 03:57:30 C 16 40 49.559 +46 28 08.72 V G96
2025-09-10 04:05:50 C 16 40 50.020 +46 28 04.40 V G96
2025-09-30 02:09:22 C 17 12 00.187 +42 36 06.59 V G96
2025-09-30 02:16:56 C 17 12 00.731 +42 36 03.28 V G96
2025-09-30 02:24:31 C 17 12 01.256 +42 35 59.57 V G96
2025-09-30 02:32:05 C 17 12 01.811 +42 35 56.40 V G96
2025-10-24 01:47:53 C 17 58 31.699 +38 37 30.65 V G96
2025-10-24 01:56:11 C 17 58 32.398 +38 37 27.62 V G96
2025-10-24 02:04:29 C 17 58 33.107 +38 37 24.78 V G96
2025-10-24 02:12:49 C 17 58 33.841 +38 37 21.58 V G96