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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:23:15

Orbital Elements for CHR137

WDS:	CHR137	WDS ID/Discoverer
P:	9.820	Orbital period (years)
a:	0.068	Semi-major axis (arcseconds)
i:	129.3	Inclination (degrees)
Ω:	20.6	Longitude of ascending node (degrees)
T:	1991.160	Epoch of periastron passage (year)
e:	0.592	Eccentricity
ω:	174.5	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR137

Position:	141855.93+545149.6	Epoch-2000 right ascension and declination
WDS-ID:	14189+5452	WDS designation
Discoverer Code:	CHR137	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	125632	HD catalog number
Hipparcos number:	69958	Hipparcos catalog number
V1:	6.8	Magnitude of the primary
V2:	8.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2007	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR137

WDS 6th Orbit including measures of CHR137

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

Ephemeris of CHR137

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.106     28.1
-------------------------
2021.0     0.027    160.3
2022.0     0.046     72.9
2023.0     0.075     48.4
2024.0     0.095     36.5
2025.0     0.106     28.1
2026.0     0.108     20.6
2027.0     0.100     12.7
2028.0     0.082      2.2

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.