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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:58:21

Orbital Elements for SKW2AA,AB

WDS:	SKW2AA,AB	WDS ID/Discoverer
P:	13.800	Orbital period (years)
a:	0.0724	Semi-major axis (arcseconds)
i:	60.6	Inclination (degrees)
Ω:	28.0	Longitude of ascending node (degrees)
T:	2010.775	Epoch of periastron passage (year)
e:	0.12	Eccentricity
ω:	233.0	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 SKW2AA,AB

Position:	041840.60+281916.7	Epoch-2000 right ascension and declination
WDS-ID:	04187+2819	WDS designation
Discoverer Code:	SKW2AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	16.	Magnitude of the primary
V2:	16.	Magnitude of the secondary
Equinox:		Equinox
Date:	2004	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SKW2AA,AB

WDS 6th Orbit including measures of SKW2AA,AB

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

Ephemeris of SKW2AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.038    257.4
-------------------------
2019.0     0.041     99.4
2020.0     0.041    142.4
2021.0     0.053    174.2
2022.0     0.064    193.7
2023.0     0.066    208.9
2024.0     0.056    226.2
2025.0     0.038    257.4
2026.0     0.034    316.9
2027.0     0.051    357.1
2028.0     0.069     15.7
2029.0     0.077     28.0
2030.0     0.075     39.3

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.