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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:14:26

Orbital Elements for CHR39AA,AB

WDS:	CHR39AA,AB	WDS ID/Discoverer
P:	7.906	Orbital period (years)
a:	0.078	Semi-major axis (arcseconds)
i:	19.3	Inclination (degrees)
Ω:	21.6	Longitude of ascending node (degrees)
T:	2011.562	Epoch of periastron passage (year)
e:	0.363	Eccentricity
ω:	174.9	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR39AA,AB

Position:	125939.55-034843.0	Epoch-2000 right ascension and declination
WDS-ID:	12597-0349	WDS designation
Discoverer Code:	CHR39AA,AB	Discover designation and components
ADS number:	8727	Aitken Double Star catalog
HD number:	112846	HD catalog number
Hipparcos number:	63414	Hipparcos catalog number
V1:	6.8	Magnitude of the primary
V2:	9.2	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR39AA,AB

WDS 6th Orbit including measures of CHR39AA,AB

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

Ephemeris of CHR39AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.093     54.1
-------------------------
2022.0     0.094    343.5
2023.0     0.105      7.6
2024.0     0.105     29.4
2025.0     0.093     54.1
2026.0     0.071     90.6
2027.0     0.051    160.5

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.