13553 Masaakikoyama (1992 JE)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4635501542 ± 5.43e-09
Semi-major axis (a)2.1900075759 AU ± 4.06e-10
Inclination (i)5.87466809° ± 5.29e-07
Long. of Asc. Node (Ω)193.43977646° ± 5.35e-06
Arg. of Perihelion (ω)110.01797535° ± 5.72e-06
Mean Anomaly (M)94.83537244° ± 6.73e-07
Mean Motion (n)0.3041192077°/day ± 8.45e-11
Perihelion dist (q)1.17482923 AU ± 1.19e-08
Aphelion dist (Q)3.20518593 AU ± 1.19e-08
Orbital Period3.24092086 yr ± 9.01e-10
Physical Parameters
H (abs. magnitude)16.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.148″
Uncertainty0
Orbit TypeAmor
MOID0.188965 AU
Observations Used1890
Gaia Obs Used91
Oppositions26
Arc Total1979-2025
First Observation Used1979-06-24
Last Observation Used2025-12-23
Observations (2063)
Date Type RA Dec Mag Band Observatory
2024-04-12 05:16:17 C 10 12 44.881 +07 29 22.09 V G96
2024-04-12 05:24:23 C 10 12 44.708 +07 29 23.57 V G96
2024-04-12 05:32:29 C 10 12 44.568 +07 29 25.62 V G96
2024-05-25 06:19:01 C 10 20 12.360 +08 41 23.18 X F52
2024-05-25 06:30:17 C 10 20 12.686 +08 41 22.51 X F52
2024-05-25 06:36:01 C 10 20 12.869 +08 41 22.09 X F52
2025-12-13 08:18:50 C 06 04 03.336 +14 42 17.25 X F51
2025-12-13 08:54:16 C 06 04 01.478 +14 42 16.37 X F51
2025-12-13 09:11:56 C 06 04 00.546 +14 42 15.94 X F51
2025-12-23 08:38:01 C 05 51 41.569 +14 38 56.15 V G96
2025-12-23 09:02:50 C 05 51 40.320 +14 38 56.40 V G96
2025-12-23 09:10:55 C 05 51 39.816 +14 38 56.83 V G96
2025-12-23 09:19:00 C 05 51 39.474 +14 38 57.12 V G96