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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:42:03

Orbital Elements for CHR238

WDS:	CHR238	WDS ID/Discoverer
P:	2.262	Orbital period (years)
a:	0.0775	Semi-major axis (arcseconds)
i:	152.2	Inclination (degrees)
Ω:	13.0	Longitude of ascending node (degrees)
T:	2012.584	Epoch of periastron passage (year)
e:	0.676	Eccentricity
ω:	125.2	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR238

Position:	084444.97-423804.4	Epoch-2000 right ascension and declination
WDS-ID:	08447-4238	WDS designation
Discoverer Code:	CHR238	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	74842	HD catalog number
Hipparcos number:	42916	Hipparcos catalog number
V1:	7.22	Magnitude of the primary
V2:	8.3	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR238

WDS 6th Orbit including measures of CHR238

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

Ephemeris of CHR238

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.120     65.5
-------------------------
2024.0     0.038    166.2
2025.0     0.120     65.5

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.