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
2018-10-06 18:58:04 C 23 13 41.51 -02 11 54.0 q 006
2018-10-06 19:02:34 C 23 13 41.61 -02 11 55.9 q 006
2018-10-06 19:10:04 C 23 13 41.91 -02 11 58.6 q 006
2018-10-06 21:07:57 C 23 13 46.28 -02 12 49.5 V Z52
2018-10-06 22:11:30 C 23 13 48.66 -02 13 15.2 V Z52
2018-10-11 10:30:31 C 23 18 17.37 -02 51 34.0 U T05
2018-10-11 10:45:59 C 23 18 17.96 -02 51 38.6 U T05
2018-10-11 11:00:31 C 23 18 18.52 -02 51 43.2 U T05
2018-10-11 11:15:38 C 23 18 19.10 -02 51 47.8 U T05
2018-10-15 09:39:08 C 23 22 21.49 -03 16 54.4 U T05
2018-10-15 09:53:41 C 23 22 22.06 -03 16 57.8 U T05
2018-10-15 10:08:04 C 23 22 22.62 -03 17 01.1 U T05
2018-10-15 10:22:29 C 23 22 23.20 -03 17 04.2 U T05
2018-10-18 02:00:34 C 23 25 11.82 -03 29 54.0 V 703
2018-10-18 02:09:58 C 23 25 12.29 -03 29 56.2 V 703
2018-10-18 02:19:23 C 23 25 12.68 -03 29 58.1 V 703
2018-10-18 02:28:47 C 23 25 13.07 -03 30 00.0 V 703
2018-10-18 04:44:19 C 23 25 18.52 -03 30 24.2 V 703
2018-10-18 04:51:52 C 23 25 18.90 -03 30 25.7 V 703
2018-10-18 04:59:25 C 23 25 19.20 -03 30 26.5 V 703
2018-10-18 05:06:57 C 23 25 19.47 -03 30 28.8 V 703
2018-10-25 10:38:48 C 23 33 14.11 -03 49 51.6 U T08
2018-10-25 10:51:56 C 23 33 14.70 -03 49 52.0 U T08
2018-10-25 11:05:01 C 23 33 15.26 -03 49 52.6 U T08
2018-10-25 11:18:09 C 23 33 15.86 -03 49 53.1 U T08
2018-10-27 13:37:42 C 23 35 39.22 -03 51 50.3 q D29
2018-10-27 14:00:36 C 23 35 40.24 -03 51 50.8 q D29
2018-10-27 14:23:30 C 23 35 41.24 -03 51 51.4 q D29
2018-10-29 04:43:56 C 23 37 31.61 -03 52 16.1 V 703
2018-10-29 04:51:41 C 23 37 31.95 -03 52 16.4 V 703
2018-10-29 04:59:27 C 23 37 32.31 -03 52 16.6 V 703
2018-10-29 05:07:12 C 23 37 32.65 -03 52 16.3 V 703
2018-11-01 04:30:42 C 23 41 01.27 -03 50 49.2 V 703
2018-11-01 04:38:47 C 23 41 01.59 -03 50 49.1 V 703
2018-11-01 04:46:52 C 23 41 01.99 -03 50 49.3 V 703
2018-11-01 04:54:57 C 23 41 02.35 -03 50 49.0 V 703
2018-11-02 09:16:25 C 23 42 26.10 -03 49 25.6 U T08
2018-11-02 09:30:47 C 23 42 26.78 -03 49 24.9 U T08
2018-11-02 09:45:18 C 23 42 27.47 -03 49 24.1 U T08
2018-11-02 10:05:19 C 23 42 28.42 -03 49 22.9 U T08
2018-11-03 04:27:42 C 23 43 23.73 -03 48 20.1 V G96
2018-11-03 04:35:50 C 23 43 24.11 -03 48 19.5 V G96
2018-11-03 04:43:58 C 23 43 24.49 -03 48 19.0 V G96
2018-11-03 04:52:07 C 23 43 24.86 -03 48 18.4 V G96
2018-11-06 09:03:13 C 23 47 15.17 -03 41 57.0 U T08
2018-11-06 09:17:37 C 23 47 15.87 -03 41 55.5 U T08
2018-11-06 09:32:01 C 23 47 16.53 -03 41 53.8 U T08
2018-11-06 09:46:22 C 23 47 17.23 -03 41 52.3 U T08
2018-11-08 09:24:26 C 23 49 44.09 -03 36 32.4 U T05
2018-11-08 09:38:46 C 23 49 44.78 -03 36 30.8 U T05