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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:43:12

Orbital Elements for COU773

WDS:	COU773	WDS ID/Discoverer
P:	165.300	Orbital period (years)
a:	0.232	Semi-major axis (arcseconds)
i:	76.5	Inclination (degrees)
Ω:	45.2	Longitude of ascending node (degrees)
T:	2019.500	Epoch of periastron passage (year)
e:	0.213	Eccentricity
ω:	86.6	Longitude of periastron (degrees)
Start-Year:	1943.0	Year
End-Year:	2107.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU773

Position:	085355.35+195801.7	Epoch-2000 right ascension and declination
WDS-ID:	08539+1958	WDS designation
Discoverer Code:	COU773	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	75974	HD catalog number
Hipparcos number:	43683	Hipparcos catalog number
V1:	7.32	Magnitude of the primary
V2:	7.86	Magnitude of the secondary
Equinox:		Equinox
Date:	2006	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU773

WDS 6th Orbit including measures of COU773

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

Ephemeris of COU773

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.064    184.9
-------------------------
1943.0     0.071    337.7
1944.0     0.073    342.8
1945.0     0.077    347.6
1946.0     0.080    352.0
1947.0     0.084    355.9
1948.0     0.089    359.5
1949.0     0.093      2.8
1950.0     0.098      5.7
1951.0     0.103      8.4
1952.0     0.108     10.8
1953.0     0.113     13.0
1954.0     0.118     15.0
1955.0     0.123     16.8
1956.0     0.128     18.5
1957.0     0.134     20.1
1958.0     0.139     21.5
1959.0     0.144     22.8
1960.0     0.149     24.1
1961.0     0.154     25.2
1962.0     0.159     26.3
1963.0     0.164     27.4
1964.0     0.168     28.3
1965.0     0.173     29.3
1966.0     0.177     30.1
1967.0     0.182     31.0
1968.0     0.186     31.8
1969.0     0.190     32.5
1970.0     0.194     33.2
1971.0     0.197     33.9
1972.0     0.201     34.6
1973.0     0.204     35.3
1974.0     0.207     35.9
1975.0     0.210     36.5
1976.0     0.212     37.1
1977.0     0.215     37.7
1978.0     0.217     38.3
1979.0     0.219     38.8
1980.0     0.220     39.4
1981.0     0.222     40.0
1982.0     0.223     40.5
1983.0     0.223     41.0
1984.0     0.224     41.6
1985.0     0.224     42.1
1986.0     0.224     42.6
1987.0     0.223     43.2
1988.0     0.223     43.7
1989.0     0.222     44.2
1990.0     0.220     44.8
1991.0     0.218     45.3
1992.0     0.216     45.9
1993.0     0.213     46.5
1994.0     0.211     47.1
1995.0     0.207     47.7
1996.0     0.204     48.3
1997.0     0.199     49.0
1998.0     0.195     49.7
1999.0     0.190     50.4
2000.0     0.185     51.2
2001.0     0.180     52.0
2002.0     0.174     52.8
2003.0     0.167     53.7
2004.0     0.161     54.7
2005.0     0.154     55.8
2006.0     0.146     57.0
2007.0     0.139     58.3
2008.0     0.131     59.8
2009.0     0.123     61.5
2010.0     0.114     63.4
2011.0     0.106     65.6
2012.0     0.097     68.1
2013.0     0.089     71.2
2014.0     0.080     75.0
2015.0     0.072     79.6
2016.0     0.064     85.5
2017.0     0.056     92.9
2018.0     0.050    102.4
2019.0     0.045    114.2
2020.0     0.043    128.0
2021.0     0.043    142.7
2022.0     0.046    156.4
2023.0     0.050    168.1
2024.0     0.057    177.5
2025.0     0.064    184.9
2026.0     0.072    190.7
2027.0     0.081    195.3
2028.0     0.089    199.0
2029.0     0.098    202.1
2030.0     0.106    204.6
2031.0     0.115    206.8
2032.0     0.123    208.7
2033.0     0.132    210.3
2034.0     0.139    211.8
2035.0     0.147    213.1
2036.0     0.154    214.3
2037.0     0.162    215.4
2038.0     0.168    216.3
2039.0     0.175    217.2
2040.0     0.181    218.1
2041.0     0.186    218.9
2042.0     0.192    219.6
2043.0     0.197    220.3
2044.0     0.202    221.0
2045.0     0.206    221.7
2046.0     0.210    222.3
2047.0     0.213    222.9
2048.0     0.216    223.5
2049.0     0.219    224.0
2050.0     0.222    224.6
2051.0     0.224    225.1
2052.0     0.226    225.6
2053.0     0.227    226.2
2054.0     0.228    226.7
2055.0     0.229    227.2
2056.0     0.230    227.7
2057.0     0.230    228.2
2058.0     0.230    228.7
2059.0     0.229    229.2
2060.0     0.229    229.7
2061.0     0.228    230.2
2062.0     0.227    230.7
2063.0     0.225    231.3
2064.0     0.223    231.8
2065.0     0.221    232.3
2066.0     0.219    232.9
2067.0     0.217    233.5
2068.0     0.214    234.0
2069.0     0.211    234.6
2070.0     0.208    235.2
2071.0     0.205    235.9
2072.0     0.201    236.5
2073.0     0.198    237.2
2074.0     0.194    237.9
2075.0     0.190    238.6
2076.0     0.186    239.4
2077.0     0.181    240.2
2078.0     0.177    241.0
2079.0     0.172    241.9
2080.0     0.168    242.8
2081.0     0.163    243.8
2082.0     0.158    244.8
2083.0     0.153    245.9
2084.0     0.148    247.1
2085.0     0.143    248.4
2086.0     0.138    249.7
2087.0     0.133    251.2
2088.0     0.127    252.8
2089.0     0.122    254.5
2090.0     0.117    256.3
2091.0     0.112    258.4
2092.0     0.107    260.6
2093.0     0.102    263.1
2094.0     0.097    265.8
2095.0     0.092    268.8
2096.0     0.088    272.1
2097.0     0.083    275.8
2098.0     0.079    279.8
2099.0     0.076    284.3
2100.0     0.073    289.1
2101.0     0.070    294.4
2102.0     0.068    300.0
2103.0     0.067    306.0
2104.0     0.066    312.1
2105.0     0.066    318.3
2106.0     0.066    324.4

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.