Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:44:43

Orbital Elements for FIN355

WDS:	FIN355	WDS ID/Discoverer
P:	14.230	Orbital period (years)
a:	0.249	Semi-major axis (arcseconds)
i:	115.3	Inclination (degrees)
Ω:	191.9	Longitude of ascending node (degrees)
T:	1985.970	Epoch of periastron passage (year)
e:	0.476	Eccentricity
ω:	137.2	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FIN355

Position:	171535.95-383538.0	Epoch-2000 right ascension and declination
WDS-ID:	17156-3836	WDS designation
Discoverer Code:	FIN355	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	155826	HD catalog number
Hipparcos number:	84425	Hipparcos catalog number
V1:	6.30	Magnitude of the primary
V2:	7.88	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for FIN355

WDS 6th Orbit including measures of FIN355

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of FIN355

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.302    193.0
-------------------------
2018.0     0.131    268.9
2019.0     0.174    242.4
2020.0     0.224    227.3
2021.0     0.270    217.6
2022.0     0.304    210.5
2023.0     0.323    204.5
2024.0     0.324    198.9
2025.0     0.302    193.0
2026.0     0.251    185.4
2027.0     0.163    171.5
2028.0     0.063    106.7
2029.0     0.131     18.8
2030.0     0.147    351.2
2031.0     0.123    318.4

Disclaimer

Acknowledgements

The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.