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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:26:02

Orbital Elements for COU100

WDS:	COU100	WDS ID/Discoverer
P:	78.210	Orbital period (years)
a:	0.42	Semi-major axis (arcseconds)
i:	102.7	Inclination (degrees)
Ω:	25.5	Longitude of ascending node (degrees)
T:	2009.420	Epoch of periastron passage (year)
e:	0.815	Eccentricity
ω:	255.0	Longitude of periastron (degrees)
Start-Year:	1986.0	Year
End-Year:	2064.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU100

Position:	144553.04+234338.2	Epoch-2000 right ascension and declination
WDS-ID:	14459+2344	WDS designation
Discoverer Code:	COU100	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.2	Magnitude of the primary
V2:	9.9	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 COU100

WDS 6th Orbit including measures of COU100

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

Ephemeris of COU100

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.361      9.9
-------------------------
1986.0     0.150    301.2
1987.0     0.146    296.5
1988.0     0.144    291.6
1989.0     0.142    286.5
1990.0     0.141    281.4
1991.0     0.142    276.2
1992.0     0.143    271.1
1993.0     0.144    266.0
1994.0     0.147    261.1
1995.0     0.150    256.4
1996.0     0.154    252.0
1997.0     0.158    247.7
1998.0     0.162    243.6
1999.0     0.166    239.8
2000.0     0.170    236.1
2001.0     0.174    232.6
2002.0     0.177    229.2
2003.0     0.178    226.0
2004.0     0.178    222.7
2005.0     0.175    219.4
2006.0     0.167    215.9
2007.0     0.152    211.9
2008.0     0.122    206.4
2009.0     0.061    193.6
2010.0     0.043     49.2
2011.0     0.122     30.3
2012.0     0.177     25.6
2013.0     0.217     23.0
2014.0     0.248     21.0
2015.0     0.272     19.5
2016.0     0.291     18.2
2017.0     0.307     17.1
2018.0     0.320     16.0
2019.0     0.331     15.0
2020.0     0.339     14.1
2021.0     0.346     13.2
2022.0     0.352     12.4
2023.0     0.356     11.6
2024.0     0.359     10.7
2025.0     0.361      9.9
2026.0     0.362      9.2
2027.0     0.362      8.4
2028.0     0.362      7.6
2029.0     0.361      6.8
2030.0     0.359      6.0
2031.0     0.356      5.2
2032.0     0.354      4.4
2033.0     0.350      3.5
2034.0     0.346      2.7
2035.0     0.342      1.8
2036.0     0.337      0.9
2037.0     0.332    360.0
2038.0     0.327    359.0
2039.0     0.321    358.0
2040.0     0.315    357.0
2041.0     0.309    356.0
2042.0     0.302    354.8
2043.0     0.296    353.7
2044.0     0.289    352.5
2045.0     0.282    351.2
2046.0     0.274    349.9
2047.0     0.267    348.4
2048.0     0.259    347.0
2049.0     0.252    345.4
2050.0     0.244    343.7
2051.0     0.236    341.9
2052.0     0.228    340.0
2053.0     0.221    337.9
2054.0     0.213    335.7
2055.0     0.205    333.3
2056.0     0.198    330.8
2057.0     0.191    328.1
2058.0     0.184    325.1
2059.0     0.177    321.9
2060.0     0.171    318.5
2061.0     0.165    314.8
2062.0     0.159    310.8
2063.0     0.154    306.6

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.