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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:53:21

Orbital Elements for WSI106AA,AB

WDS:	WSI106AA,AB	WDS ID/Discoverer
P:	12.400	Orbital period (years)
a:	0.061	Semi-major axis (arcseconds)
i:	124.2	Inclination (degrees)
Ω:	146.4	Longitude of ascending node (degrees)
T:	2017.316	Epoch of periastron passage (year)
e:	0.256	Eccentricity
ω:	111.3	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 WSI106AA,AB

Position:	180017.93+215347.5	Epoch-2000 right ascension and declination
WDS-ID:	18003+2154	WDS designation
Discoverer Code:	WSI106AA,AB	Discover designation and components
ADS number:	10971	Aitken Double Star catalog
HD number:	341480	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.4	Magnitude of the primary
V2:	9.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WSI106AA,AB

WDS 6th Orbit including measures of WSI106AA,AB

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

Ephemeris of WSI106AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.062    173.0
-------------------------
2019.0     0.053    322.4
2020.0     0.053    302.2
2021.0     0.046    278.4
2022.0     0.042    247.6
2023.0     0.045    215.5
2024.0     0.053    190.7
2025.0     0.062    173.0
2026.0     0.066    158.7
2027.0     0.062    144.6
2028.0     0.048    125.4
2029.0     0.028     80.4
2030.0     0.034      4.5

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.