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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:30:34

Orbital Elements for FIN307

WDS:	FIN307	WDS ID/Discoverer
P:	12.237	Orbital period (years)
a:	0.176	Semi-major axis (arcseconds)
i:	76.3	Inclination (degrees)
Ω:	90.8	Longitude of ascending node (degrees)
T:	2007.518	Epoch of periastron passage (year)
e:	0.032	Eccentricity
ω:	64.9	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 FIN307

Position:	215755.03-545933.2	Epoch-2000 right ascension and declination
WDS-ID:	21579-5500	WDS designation
Discoverer Code:	FIN307	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	208450	HD catalog number
Hipparcos number:	108431	Hipparcos catalog number
V1:	4.80	Magnitude of the primary
V2:	5.96	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for FIN307

WDS 6th Orbit including measures of FIN307

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

Ephemeris of FIN307

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.140    282.3
-------------------------
2019.0     0.131    102.5
2020.0     0.064    127.9
2021.0     0.057    226.8
2022.0     0.125    257.2
2023.0     0.170    266.9
2024.0     0.175    273.9
2025.0     0.140    282.3
2026.0     0.078    301.7
2027.0     0.047     25.1
2028.0     0.107     71.6
2029.0     0.158     84.0
2030.0     0.173     91.5

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.