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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:43:51

Orbital Elements for COU1897

WDS:	COU1897	WDS ID/Discoverer
P:	82.300	Orbital period (years)
a:	0.138	Semi-major axis (arcseconds)
i:	31.7	Inclination (degrees)
Ω:	133.0	Longitude of ascending node (degrees)
T:	2017.300	Epoch of periastron passage (year)
e:	0.408	Eccentricity
ω:	200.9	Longitude of periastron (degrees)
Start-Year:	1984.0	Year
End-Year:	2066.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1897

Position:	085827.39+354809.6	Epoch-2000 right ascension and declination
WDS-ID:	08585+3548	WDS designation
Discoverer Code:	COU1897	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	76595	HD catalog number
Hipparcos number:	44064	Hipparcos catalog number
V1:	6.84	Magnitude of the primary
V2:	8.73	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU1897

WDS 6th Orbit including measures of COU1897

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

Ephemeris of COU1897

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.088     48.8
-------------------------
1984.0     0.179    165.7
1985.0     0.177    167.7
1986.0     0.175    169.8
1987.0     0.172    171.9
1988.0     0.169    174.2
1989.0     0.166    176.5
1990.0     0.163    178.9
1991.0     0.160    181.3
1992.0     0.156    183.9
1993.0     0.153    186.6
1994.0     0.149    189.5
1995.0     0.145    192.5
1996.0     0.141    195.6
1997.0     0.138    198.9
1998.0     0.134    202.5
1999.0     0.130    206.2
2000.0     0.126    210.2
2001.0     0.122    214.4
2002.0     0.118    218.9
2003.0     0.114    223.8
2004.0     0.110    228.9
2005.0     0.107    234.4
2006.0     0.104    240.3
2007.0     0.101    246.5
2008.0     0.098    253.1
2009.0     0.095    260.0
2010.0     0.093    267.3
2011.0     0.091    275.0
2012.0     0.089    283.0
2013.0     0.087    291.3
2014.0     0.086    299.9
2015.0     0.084    308.9
2016.0     0.082    318.3
2017.0     0.081    328.0
2018.0     0.079    338.1
2019.0     0.078    348.6
2020.0     0.078    359.3
2021.0     0.078     10.0
2022.0     0.079     20.5
2023.0     0.081     30.6
2024.0     0.084     40.1
2025.0     0.088     48.8
2026.0     0.093     56.8
2027.0     0.098     63.9
2028.0     0.103     70.4
2029.0     0.108     76.2
2030.0     0.114     81.4
2031.0     0.120     86.1
2032.0     0.125     90.4
2033.0     0.131     94.4
2034.0     0.136     98.0
2035.0     0.141    101.4
2036.0     0.146    104.6
2037.0     0.151    107.5
2038.0     0.155    110.3
2039.0     0.159    112.9
2040.0     0.163    115.4
2041.0     0.167    117.8
2042.0     0.170    120.1
2043.0     0.173    122.3
2044.0     0.176    124.4
2045.0     0.179    126.4
2046.0     0.181    128.4
2047.0     0.183    130.4
2048.0     0.185    132.3
2049.0     0.187    134.2
2050.0     0.188    136.0
2051.0     0.189    137.8
2052.0     0.190    139.6
2053.0     0.191    141.4
2054.0     0.192    143.2
2055.0     0.192    144.9
2056.0     0.192    146.7
2057.0     0.192    148.4
2058.0     0.191    150.2
2059.0     0.190    152.0
2060.0     0.190    153.8
2061.0     0.189    155.6
2062.0     0.187    157.4
2063.0     0.186    159.3
2064.0     0.184    161.2
2065.0     0.182    163.1

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.