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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:41:19

Orbital Elements for WSI86

WDS:	WSI86	WDS ID/Discoverer
P:	14.910	Orbital period (years)
a:	0.2697	Semi-major axis (arcseconds)
i:	132.0	Inclination (degrees)
Ω:	13.1	Longitude of ascending node (degrees)
T:	2014.960	Epoch of periastron passage (year)
e:	0.502	Eccentricity
ω:	26.7	Longitude of periastron (degrees)
Start-Year:	2018.0	Year
End-Year:	2032.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI86

Position:	165325.26-202455.8	Epoch-2000 right ascension and declination
WDS-ID:	16534-2025	WDS designation
Discoverer Code:	WSI86	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	152311	HD catalog number
Hipparcos number:	82621	Hipparcos catalog number
V1:	5.9	Magnitude of the primary
V2:	11.3	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WSI86

WDS 6th Orbit including measures of WSI86

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

Ephemeris of WSI86

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.299    152.4
-------------------------
2018.0     0.283    209.4
2019.0     0.339    199.0
2020.0     0.373    191.0
2021.0     0.389    184.1
2022.0     0.387    177.4
2023.0     0.370    170.3
2024.0     0.340    162.3
2025.0     0.299    152.4
2026.0     0.248    138.7
2027.0     0.196    117.8
2028.0     0.158     84.2
2029.0     0.148     39.6
2030.0     0.120    345.8
2031.0     0.125    263.5

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.