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
2018-08-02 03:41:47 C 21 33 31.19 +19 03 00.8 q W19
2018-08-02 03:44:42 C 21 33 31.49 +19 03 00.1 q W19
2018-08-02 21:12:04 C 21 35 31.92 +18 57 29.7 U Z52
2018-08-02 21:23:39 C 21 35 33.19 +18 57 26.2 U Z52
2018-08-02 21:35:15 C 21 35 34.45 +18 57 22.8 U Z52
2018-08-03 13:00:09 C 21 37 17.00 +18 52 32.2 U T08
2018-08-03 13:08:07 C 21 37 17.81 +18 52 29.2 U T08
2018-08-03 13:28:06 C 21 37 19.86 +18 52 21.4 U T08
2018-08-03 21:18:51 C 21 38 16.04 +18 49 07.8 U G24
2018-08-03 23:23:42 C 21 38 29.12 +18 48 26.6 q 160
2018-08-03 23:25:06 C 21 38 29.26 +18 48 26.1 q 160
2018-08-03 23:26:18 C 21 38 29.38 +18 48 25.7 q 160
2018-08-03 23:34:24 C 21 38 30.23 +18 48 19.2 U G24
2018-08-04 00:23:44 C 21 38 35.33 +18 48 00.0 U K87
2018-08-04 00:50:46 C 21 38 38.14 +18 47 49.6 U K87
2018-08-04 01:17:49 C 21 38 40.95 +18 47 38.9 U K87
2018-08-04 21:19:59 C 21 40 57.21 +18 39 31.3 U Z52
2018-08-04 21:33:17 C 21 40 58.62 +18 39 26.1 U Z52
2018-08-04 21:46:02 C 21 40 59.96 +18 39 21.0 U Z52
2018-08-05 12:58:35 C 21 42 37.96 +18 33 06.3 U T05
2018-08-05 13:14:17 C 21 42 39.51 +18 32 58.8 U T05
2018-08-05 13:26:33 C 21 42 40.73 +18 32 52.9 U T05
2018-08-05 13:42:07 C 21 42 42.28 +18 32 45.3 U T05
2018-08-05 17:41:13 C 21 43 09.65 +18 30 49.5 q D29
2018-08-05 17:42:29 C 21 43 09.77 +18 30 48.8 q D29
2018-08-05 18:01:35 C 21 43 11.65 +18 30 39.8 q D29
2018-08-05 18:02:51 C 21 43 11.77 +18 30 39.2 q D29
2018-08-05 18:21:56 C 21 43 13.66 +18 30 30.0 q D29
2018-08-05 18:23:12 C 21 43 13.79 +18 30 29.4 q D29
2018-08-05 21:14:28 C 21 43 34.94 +18 28 53.5 U Z52
2018-08-05 21:24:53 C 21 43 36.03 +18 28 48.9 U Z52
2018-08-06 21:10:28 C 21 46 10.12 +18 17 09.0 U Z52
2018-08-06 21:20:53 C 21 46 11.19 +18 17 03.9 U Z52
2018-08-06 22:16:25 C 21 46 16.66 +18 16 43.5 q 160
2018-08-06 22:19:19 C 21 46 16.95 +18 16 42.1 q 160
2018-08-06 22:22:14 C 21 46 17.24 +18 16 40.6 q 160
2018-08-07 03:37:09 C 21 46 48.43 +18 14 00.4 q Z45
2018-08-07 03:45:44 C 21 46 49.28 +18 13 55.8 q Z45
2018-08-07 03:58:48 C 21 46 50.57 +18 13 48.4 q Z45
2018-08-07 12:41:04 C 21 47 46.56 +18 09 23.7 U T08
2018-08-07 12:57:10 C 21 47 48.08 +18 09 14.6 U T08
2018-08-07 13:09:14 C 21 47 49.23 +18 09 07.8 U T08
2018-08-07 13:23:55 C 21 47 50.62 +18 08 59.4 U T08
2018-08-08 08:15:57 C 21 49 51.26 +17 58 16.4 U I41
2018-08-08 08:17:20 C 21 49 51.39 +17 58 15.5 U I41
2018-08-08 08:58:24 C 21 49 55.22 +17 57 51.7 U I41
2018-08-08 08:59:48 C 21 49 55.35 +17 57 50.9 U I41
2018-08-08 19:49:27 C 21 51 04.58 +17 51 17.8 t 073
2018-08-08 20:46:14 C 21 51 10.01 +17 50 45.2 t 073
2018-08-08 21:45:17 C 21 51 15.61 +17 50 10.7 t 073