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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:38:24

Orbital Elements for CHR55

WDS:	CHR55	WDS ID/Discoverer
P:	76.320	Orbital period (years)
a:	0.357	Semi-major axis (arcseconds)
i:	96.6	Inclination (degrees)
Ω:	177.5	Longitude of ascending node (degrees)
T:	1989.980	Epoch of periastron passage (year)
e:	0.691	Eccentricity
ω:	292.5	Longitude of periastron (degrees)
Start-Year:	1987.0	Year
End-Year:	2063.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR55

Position:	162524.17+372338.7	Epoch-2000 right ascension and declination
WDS-ID:	16254+3724	WDS designation
Discoverer Code:	CHR55	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	148283	HD catalog number
Hipparcos number:	80460	Hipparcos catalog number
V1:	5.6	Magnitude of the primary
V2:	8.3	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 CHR55

WDS 6th Orbit including measures of CHR55

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

Ephemeris of CHR55

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.204     16.2
-------------------------
1987.0     0.138    353.2
1988.0     0.086    349.0
1989.0     0.026    326.6
1990.0     0.045    192.5
1991.0     0.100    181.7
1992.0     0.139    178.2
1993.0     0.162    176.1
1994.0     0.175    174.3
1995.0     0.181    172.8
1996.0     0.181    171.2
1997.0     0.178    169.7
1998.0     0.172    168.0
1999.0     0.164    166.3
2000.0     0.155    164.3
2001.0     0.145    162.1
2002.0     0.135    159.6
2003.0     0.124    156.6
2004.0     0.112    153.0
2005.0     0.101    148.6
2006.0     0.090    143.1
2007.0     0.080    136.3
2008.0     0.071    127.5
2009.0     0.064    116.6
2010.0     0.060    103.6
2011.0     0.059     89.5
2012.0     0.062     75.6
2013.0     0.067     63.5
2014.0     0.075     53.5
2015.0     0.085     45.7
2016.0     0.095     39.5
2017.0     0.107     34.6
2018.0     0.119     30.6
2019.0     0.131     27.4
2020.0     0.143     24.8
2021.0     0.155     22.5
2022.0     0.168     20.6
2023.0     0.180     18.9
2024.0     0.192     17.5
2025.0     0.204     16.2
2026.0     0.216     15.1
2027.0     0.227     14.1
2028.0     0.238     13.1
2029.0     0.249     12.3
2030.0     0.260     11.5
2031.0     0.270     10.8
2032.0     0.280     10.1
2033.0     0.290      9.5
2034.0     0.299      9.0
2035.0     0.308      8.4
2036.0     0.316      7.9
2037.0     0.324      7.4
2038.0     0.331      6.9
2039.0     0.338      6.5
2040.0     0.345      6.1
2041.0     0.350      5.7
2042.0     0.355      5.3
2043.0     0.360      4.9
2044.0     0.364      4.5
2045.0     0.367      4.1
2046.0     0.369      3.7
2047.0     0.370      3.4
2048.0     0.371      3.0
2049.0     0.370      2.6
2050.0     0.369      2.3
2051.0     0.366      1.9
2052.0     0.362      1.5
2053.0     0.356      1.1
2054.0     0.349      0.7
2055.0     0.340      0.3
2056.0     0.329    359.9
2057.0     0.315    359.4
2058.0     0.299    358.9
2059.0     0.279    358.3
2060.0     0.256    357.6
2061.0     0.228    356.7
2062.0     0.194    355.6

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.