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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:38:05

Orbital Elements for CHR54

WDS:	CHR54	WDS ID/Discoverer
P:	39.890	Orbital period (years)
a:	0.183	Semi-major axis (arcseconds)
i:	101.9	Inclination (degrees)
Ω:	236.6	Longitude of ascending node (degrees)
T:	2011.760	Epoch of periastron passage (year)
e:	0.634	Eccentricity
ω:	306.0	Longitude of periastron (degrees)
Start-Year:	2006.0	Year
End-Year:	2044.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR54

Position:	162253.58-170108.9	Epoch-2000 right ascension and declination
WDS-ID:	16229-1701	WDS designation
Discoverer Code:	CHR54	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	147473	HD catalog number
Hipparcos number:	80240	Hipparcos catalog number
V1:	7.62	Magnitude of the primary
V2:	7.81	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for CHR54

WDS 6th Orbit including measures of CHR54

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

Ephemeris of CHR54

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.098     89.9
-------------------------
2006.0     0.179     57.0
2007.0     0.159     55.3
2008.0     0.133     53.1
2009.0     0.100     49.5
2010.0     0.057     41.2
2011.0     0.015    333.4
2012.0     0.051    247.0
2013.0     0.081    236.1
2014.0     0.090    229.6
2015.0     0.086    223.5
2016.0     0.078    216.3
2017.0     0.067    207.0
2018.0     0.056    194.1
2019.0     0.048    176.0
2020.0     0.046    153.7
2021.0     0.050    132.0
2022.0     0.059    115.4
2023.0     0.071    103.8
2024.0     0.084     95.7
2025.0     0.098     89.9
2026.0     0.112     85.5
2027.0     0.126     82.1
2028.0     0.139     79.4
2029.0     0.152     77.1
2030.0     0.164     75.2
2031.0     0.175     73.5
2032.0     0.186     72.0
2033.0     0.195     70.7
2034.0     0.203     69.5
2035.0     0.211     68.4
2036.0     0.217     67.3
2037.0     0.222     66.3
2038.0     0.225     65.3
2039.0     0.227     64.4
2040.0     0.227     63.5
2041.0     0.225     62.5
2042.0     0.221     61.5
2043.0     0.215     60.5

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.