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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:13:17

Orbital Elements for CIA20

WDS:	CIA20	WDS ID/Discoverer
P:	0.173	Orbital period (years)
a:	0.001829	Semi-major axis (arcseconds)
i:	49.4	Inclination (degrees)
Ω:	115.1	Longitude of ascending node (degrees)
T:	2019.647	Epoch of periastron passage (year)
e:	0.0	Eccentricity
ω:	180.0	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CIA20

Position:	202344.37+372835.2	Epoch-2000 right ascension and declination
WDS-ID:	20237+3729	WDS designation
Discoverer Code:	CIA20	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	194335	HD catalog number
Hipparcos number:	100574	Hipparcos catalog number
V1:	6.8	Magnitude of the primary
V2:	7.2	Magnitude of the secondary
Equinox:		Equinox
Date:	2000	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CIA20

WDS 6th Orbit including measures of CIA20

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

Ephemeris of CIA20

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.002    285.6
-------------------------

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.