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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:31:56

Orbital Elements for VSP57

WDS:	VSP57	WDS ID/Discoverer
P:	10.896	Orbital period (years)
a:	0.235	Semi-major axis (arcseconds)
i:	52.5	Inclination (degrees)
Ω:	193.0	Longitude of ascending node (degrees)
T:	2014.850	Epoch of periastron passage (year)
e:	0.53	Eccentricity
ω:	61.0	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 VSP57

Position:	221011.99+061152.3	Epoch-2000 right ascension and declination
WDS-ID:	22102+0612	WDS designation
Discoverer Code:	VSP57	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	210418	HD catalog number
Hipparcos number:	109427	Hipparcos catalog number
V1:	3.4	Magnitude of the primary
V2:	10.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for VSP57

WDS 6th Orbit including measures of VSP57

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

Ephemeris of VSP57

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.147    183.8
-------------------------
2020.0     0.267     56.6
2021.0     0.238     71.4
2022.0     0.206     90.7
2023.0     0.181    116.1
2024.0     0.169    147.3
2025.0     0.147    183.8
2026.0     0.071    286.5
2027.0     0.188      3.2
2028.0     0.260     21.7
2029.0     0.286     34.1

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.