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
2018-07-19 20:39:35 C 20 54 13.63 +18 47 20.4 V G34
2018-07-19 20:43:45 C 20 54 14.13 +18 47 22.0 V G34
2018-07-20 00:12:47 C 20 54 39.31 +18 48 46.7 V K46
2018-07-20 00:15:38 C 20 54 39.65 +18 48 47.8 V K46
2018-07-20 12:47:30 C 20 56 14.40 +18 53 45.3 U T05
2018-07-20 13:01:28 C 20 56 16.02 +18 53 49.9 U T05
2018-07-20 13:44:20 C 20 56 21.01 +18 54 04.0 U T05
2018-07-20 23:09:15 C 20 57 35.14 +18 57 02.8 14.6 q K83
2018-07-20 23:14:39 C 20 57 35.78 +18 57 04.7 14.7 q K83
2018-07-22 12:46:02 C 21 02 19.97 +19 08 23.3 U T08
2018-07-22 13:02:53 C 21 02 21.90 +19 08 27.2 U T08
2018-07-22 13:16:50 C 21 02 23.51 +19 08 30.2 U T08
2018-07-22 13:31:28 C 21 02 25.21 +19 08 33.5 U T08
2018-07-22 21:45:37 n 21 03 30.88 +19 10 10.7 14.7 V Z43
2018-07-22 21:53:34 n 21 03 31.86 +19 10 13.0 15.2 V Z43
2018-07-22 22:00:35 n 21 03 32.68 +19 10 14.8 14.9 V Z43
2018-07-22 22:07:12 n 21 03 33.44 +19 10 16.6 14.9 V Z43
2018-07-22 22:13:28 n 21 03 34.24 +19 10 18.3 15.4 V Z43
2018-07-22 22:19:49 n 21 03 35.01 +19 10 20.1 15.3 V Z43
2018-07-23 21:58:29 C 21 06 33.99 +19 15 11.8 U Z52
2018-07-23 22:13:33 C 21 06 35.80 +19 15 15.0 U Z52
2018-07-23 22:28:37 C 21 06 37.60 +19 15 18.0 U Z52
2018-07-23 22:44:49 C 21 06 39.54 +19 15 21.2 U Z52
2018-07-24 00:39:24 C 21 06 52.72 +19 15 45.0 U K87
2018-07-24 00:54:01 C 21 06 54.44 +19 15 47.5 U K87
2018-07-24 01:12:26 C 21 06 56.60 +19 15 50.6 U K87
2018-07-24 01:15:06 C 21 06 56.89 +19 15 51.2 14.5 V K46
2018-07-24 01:26:36 C 21 06 58.24 +19 15 53.1 14.4 V K46
2018-07-24 02:01:07 C 21 07 02.30 +19 15 58.6 V K46
2018-07-24 12:35:24 C 21 08 22.04 +19 18 02.9 U T05
2018-07-24 12:47:05 C 21 08 23.37 +19 18 04.6 U T05
2018-07-24 12:50:26 C 21 08 23.76 +19 18 04.6 U T05
2018-07-24 13:01:20 C 21 08 24.99 +19 18 06.2 U T05
2018-07-24 13:02:40 C 21 08 25.14 +19 18 06.4 U T05
2018-07-24 13:16:02 C 21 08 26.67 +19 18 08.0 U T05
2018-07-24 13:16:42 C 21 08 26.76 +19 18 07.8 U T05
2018-07-24 13:32:06 C 21 08 28.52 +19 18 09.6 U T05
2018-07-25 01:44:33 C 21 10 01.11 +19 19 29.5 U K87
2018-07-25 01:55:22 C 21 10 02.38 +19 19 30.6 U K87
2018-07-25 02:06:11 C 21 10 03.65 +19 19 31.8 U K87
2018-07-25 03:01:54 C 21 10 13.42 +19 19 40.5 q W19
2018-07-25 03:04:50 C 21 10 13.76 +19 19 40.9 q W19
2018-07-25 03:07:56 C 21 10 14.13 +19 19 41.4 q W19
2018-07-25 03:10:49 C 21 10 14.47 +19 19 41.9 q W19
2018-07-25 03:13:52 C 21 10 14.84 +19 19 42.3 q W19
2018-07-26 01:48:43 C 21 13 01.28 +19 21 48.7 U K87
2018-07-26 02:01:43 C 21 13 02.80 +19 21 49.4 U K87
2018-07-26 02:14:42 C 21 13 04.31 +19 21 50.1 U K87
2018-07-26 12:36:25 C 21 14 21.52 +19 22 48.9 U T08
2018-07-26 12:49:00 C 21 14 22.93 +19 22 49.2 U T08