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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:45:31

Orbital Elements for FIN356

WDS:	FIN356	WDS ID/Discoverer
P:	12.930	Orbital period (years)
a:	0.114	Semi-major axis (arcseconds)
i:	98.6	Inclination (degrees)
Ω:	85.9	Longitude of ascending node (degrees)
T:	2010.650	Epoch of periastron passage (year)
e:	0.814	Eccentricity
ω:	93.6	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FIN356

Position:	171930.51-500349.3	Epoch-2000 right ascension and declination
WDS-ID:	17195-5004	WDS designation
Discoverer Code:	FIN356	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	156331	HD catalog number
Hipparcos number:	84759	Hipparcos catalog number
V1:	7.0	Magnitude of the primary
V2:	7.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for FIN356

WDS 6th Orbit including measures of FIN356

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

Ephemeris of FIN356

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.062    253.5
-------------------------
2019.0     0.053    118.3
2020.0     0.064    109.1
2021.0     0.072    102.3
2022.0     0.073     96.5
2023.0     0.055     89.3
2024.0     0.045    263.3
2025.0     0.062    253.5
2026.0     0.057    244.9
2027.0     0.047    233.3
2028.0     0.037    215.0
2029.0     0.031    186.5
2030.0     0.033    154.4

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.