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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:22:23

Orbital Elements for SIG6

WDS:	SIG6	WDS ID/Discoverer
P:	10.720	Orbital period (years)
a:	0.0861	Semi-major axis (arcseconds)
i:	144.7	Inclination (degrees)
Ω:	81.8	Longitude of ascending node (degrees)
T:	2018.085	Epoch of periastron passage (year)
e:	0.315	Eccentricity
ω:	14.0	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SIG6

Position:	213211.45+134158.4	Epoch-2000 right ascension and declination
WDS-ID:	21322+1342	WDS designation
Discoverer Code:	SIG6	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	16.07	Magnitude of the primary
V2:	16.91	Magnitude of the secondary
Equinox:		Equinox
Date:	2008	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SIG6

WDS 6th Orbit including measures of SIG6

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

Ephemeris of SIG6

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.098    223.7
-------------------------
2020.0     0.070    322.3
2021.0     0.092    292.4
2022.0     0.107    272.9
2023.0     0.112    257.1
2024.0     0.109    241.6
2025.0     0.098    223.7
2026.0     0.081    199.6
2027.0     0.066    163.1
2028.0     0.061    113.6
2029.0     0.057     59.1

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.