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
2021-04-08 23:22:38 C 12 07 43.71 -01 31 07.8 V 130
2021-04-09 06:04:59 C 12 07 24.26 -01 27 57.5 U I41
2021-04-09 07:11:20 C 12 07 20.91 -01 27 26.3 U I41
2021-04-09 07:39:32 C 12 07 19.48 -01 27 13.1 U I41
2021-04-10 07:02:15 C 12 06 11.44 -01 16 14.8 V 703
2021-04-10 07:10:09 C 12 06 11.07 -01 16 11.1 V 703
2021-04-10 07:18:03 C 12 06 10.67 -01 16 07.3 V 703
2021-04-10 07:25:57 C 12 06 10.23 -01 16 04.4 V 703
2021-04-10 08:54:08 C 12 06 06.202 -01 15 20.99 U F51
2021-04-10 09:29:26 C 12 06 04.420 -01 15 04.42 U F51
2021-04-10 09:47:10 C 12 06 03.526 -01 14 56.14 U F51
2021-04-14 07:25:48 C 12 01 39.292 -00 31 38.75 U F52
2021-04-14 07:47:13 C 12 01 38.270 -00 31 29.02 U F52
2021-04-14 08:08:25 C 12 01 37.257 -00 31 19.35 U F52
2021-04-14 08:29:43 C 12 01 36.236 -00 31 09.69 U F52
2021-04-15 07:41:33 C 12 00 32.94 -00 20 40.8 V 703
2021-04-15 07:57:10 C 12 00 32.14 -00 20 33.5 V 703
2021-04-15 08:04:58 C 12 00 31.70 -00 20 29.1 V 703
2021-04-15 08:57:56 C 12 00 29.609 -00 20 05.20 U F51
2021-04-15 09:14:42 C 12 00 28.821 -00 19 57.63 U F51
2021-04-15 09:31:28 C 12 00 28.033 -00 19 50.11 U F51
2021-04-15 09:48:13 C 12 00 27.247 -00 19 42.55 U F51
2021-04-17 07:07:54 C 11 58 27.676 +00 00 27.77 U F52
2021-04-17 07:22:53 C 11 58 27.003 +00 00 34.32 U F52
2021-04-17 07:37:37 C 11 58 26.331 +00 00 40.73 U F52
2021-04-17 07:52:19 C 11 58 25.670 +00 00 47.22 U F52
2021-04-18 18:28:04 C 11 56 57.56 +00 15 57.0 o K95
2021-04-18 18:52:29 C 11 56 56.49 +00 16 07.2 o K95
2021-04-19 05:25:36 C 11 56 30.04 +00 20 30.8 U I41
2021-04-19 05:57:53 C 11 56 28.65 +00 20 44.5 U I41
2021-04-19 06:07:31 C 11 56 28.23 +00 20 48.7 U I41
2021-04-19 06:13:50 C 11 56 27.88 +00 20 51.9 V 703
2021-04-19 06:21:50 C 11 56 27.61 +00 20 55.4 V 703
2021-04-19 06:29:49 C 11 56 27.14 +00 20 57.4 V 703
2021-04-19 06:37:49 C 11 56 26.85 +00 21 00.3 V 703
2021-04-20 09:04:23 C 11 55 22.41 +00 32 15.5 V T08
2021-04-20 09:48:40 C 11 55 20.47 +00 32 34.1 V T08
2021-04-20 09:52:42 C 11 55 20.32 +00 32 35.7 V T08
2021-04-20 10:07:23 C 11 55 19.66 +00 32 41.6 V T08
2021-04-21 05:26:32 C 11 54 34.03 +00 40 41.8 U I41
2021-04-21 06:06:46 C 11 54 32.39 +00 40 58.6 U I41
2021-04-30 13:15:24 C 11 47 06.65 +02 04 05.5 q D29
2021-04-30 13:35:46 C 11 47 06.09 +02 04 12.0 q D29
2021-04-30 13:56:09 C 11 47 05.50 +02 04 19.3 q D29
2021-05-01 06:11:49 C 11 46 39.59 +02 09 35.3 V 703
2021-05-01 06:19:25 C 11 46 39.35 +02 09 38.3 V 703
2021-05-01 06:27:03 C 11 46 39.10 +02 09 40.2 V 703
2021-05-01 06:34:39 C 11 46 38.96 +02 09 42.6 V 703
2021-05-01 12:31:26 C 11 46 30.09 +02 11 36.6 q D29
2021-05-01 12:51:48 C 11 46 29.51 +02 11 43.3 q D29