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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:11:29

Orbital Elements for WSI113

WDS:	WSI113	WDS ID/Discoverer
P:	11.552	Orbital period (years)
a:	0.31271	Semi-major axis (arcseconds)
i:	108.194	Inclination (degrees)
Ω:	9.81	Longitude of ascending node (degrees)
T:	2019.771	Epoch of periastron passage (year)
e:	0.2995	Eccentricity
ω:	268.58	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 WSI113

Position:	122857.59+082531.9	Epoch-2000 right ascension and declination
WDS-ID:	12290+0826	WDS designation
Discoverer Code:	WSI113	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	60910	Hipparcos catalog number
V1:	12.2	Magnitude of the primary
V2:	13.8	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 WSI113

WDS 6th Orbit including measures of WSI113

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

Ephemeris of WSI113

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.146    311.9
-------------------------
2020.0     0.082     64.7
2021.0     0.234     17.9
2022.0     0.300      5.8
2023.0     0.283    355.5
2024.0     0.218    341.0
2025.0     0.146    311.9
2026.0     0.134    259.5
2027.0     0.198    223.7
2028.0     0.267    206.8
2029.0     0.298    195.7

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.