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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:29:22

Orbital Elements for FIN330AB

WDS:	FIN330AB	WDS ID/Discoverer
P:	20.218	Orbital period (years)
a:	0.124	Semi-major axis (arcseconds)
i:	108.4	Inclination (degrees)
Ω:	31.9	Longitude of ascending node (degrees)
T:	2007.260	Epoch of periastron passage (year)
e:	0.427	Eccentricity
ω:	215.2	Longitude of periastron (degrees)
Start-Year:	2015.0	Year
End-Year:	2035.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for FIN330AB

Position:	214744.17-305353.9	Epoch-2000 right ascension and declination
WDS-ID:	21477-3054	WDS designation
Discoverer Code:	FIN330AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	207155	HD catalog number
Hipparcos number:	107608	Hipparcos catalog number
V1:	5.8	Magnitude of the primary
V2:	5.8	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for FIN330AB

WDS 6th Orbit including measures of FIN330AB

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

Ephemeris of FIN330AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.063    237.7
-------------------------
2015.0     0.164     26.7
2016.0     0.161     23.8
2017.0     0.152     20.6
2018.0     0.139     17.0
2019.0     0.123     12.4
2020.0     0.102      6.2
2021.0     0.080    356.7
2022.0     0.058    339.8
2023.0     0.043    307.4
2024.0     0.046    265.1
2025.0     0.063    237.7
2026.0     0.076    221.6
2027.0     0.071    208.0
2028.0     0.041    182.9
2029.0     0.031     91.7
2030.0     0.069     53.7
2031.0     0.105     43.1
2032.0     0.131     37.5
2033.0     0.150     33.6
2034.0     0.160     30.3

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.