Double Star Calculator - Orbit

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: 1942.35 Year
End-Year: 2107.65 Year
Epoch: 2026.5 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
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Ksr2021 Reference

Double Star Orbit for COU773



WDS 6th Orbit including measures of COU773

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of COU773
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.076   193.09
--------------------------
1942.35    0.069   334.09
1943.35    0.071   339.52
1944.35    0.074   344.56
1945.35    0.078   349.19
1946.35    0.082   353.40
1947.35    0.086   357.23
1948.35    0.090     0.69
1949.35    0.095     3.82
1950.35    0.100     6.65
1951.35    0.105     9.22
1952.35    0.110    11.56
1953.35    0.115    13.68
1954.35    0.120    15.63
1955.35    0.125    17.41
1956.35    0.130    19.05
1957.35    0.135    20.57
1958.35    0.141    21.97
1959.35    0.146    23.28
1960.35    0.151    24.50
1961.35    0.156    25.64
1962.35    0.160    26.71
1963.35    0.165    27.71
1964.35    0.170    28.67
1965.35    0.174    29.57
1966.35    0.179    30.43
1967.35    0.183    31.24
1968.35    0.187    32.02
1969.35    0.191    32.77
1970.35    0.195    33.49
1971.35    0.198    34.18
1972.35    0.202    34.85
1973.35    0.205    35.50
1974.35    0.208    36.12
1975.35    0.211    36.73
1976.35    0.213    37.33
1977.35    0.215    37.91
1978.35    0.217    38.48
1979.35    0.219    39.04
1980.35    0.221    39.60
1981.35    0.222    40.14
1982.35    0.223    40.68
1983.35    0.224    41.22
1984.35    0.224    41.75
1985.35    0.224    42.28
1986.35    0.224    42.82
1987.35    0.223    43.35
1988.35    0.222    43.89
1989.35    0.221    44.43
1990.35    0.219    44.99
1991.35    0.217    45.55
1992.35    0.215    46.12
1993.35    0.212    46.70
1994.35    0.209    47.30
1995.35    0.206    47.92
1996.35    0.202    48.56
1997.35    0.198    49.23
1998.35    0.193    49.93
1999.35    0.188    50.66
2000.35    0.183    51.44
2001.35    0.177    52.26
2002.35    0.171    53.14
2003.35    0.165    54.08
2004.35    0.158    55.11
2005.35    0.151    56.22
2006.35    0.144    57.45
2007.35    0.136    58.82
2008.35    0.128    60.35
2009.35    0.120    62.09
2010.35    0.112    64.09
2011.35    0.103    66.42
2012.35    0.094    69.17
2013.35    0.086    72.47
2014.35    0.077    76.51
2015.35    0.069    81.54
2016.35    0.061    87.89
2017.35    0.054    96.00
2018.35    0.048   106.28
2019.35    0.044   118.86
2020.35    0.043   133.14
2021.35    0.044   147.65
2022.35    0.047   160.77
2023.35    0.052   171.66
2024.35    0.059   180.29
2025.35    0.067   187.06
2026.35    0.075   192.39
2027.35    0.084   196.66
2028.35    0.092   200.13
2029.35    0.101   203.01
2030.35    0.109   205.43
2031.35    0.118   207.50
2032.35    0.126   209.30
2033.35    0.134   210.88
2034.35    0.142   212.28
2035.35    0.150   213.53
2036.35    0.157   214.67
2037.35    0.164   215.71
2038.35    0.171   216.66
2039.35    0.177   217.55
2040.35    0.183   218.38
2041.35    0.188   219.15
2042.35    0.194   219.88
2043.35    0.199   220.58
2044.35    0.203   221.24
2045.35    0.207   221.88
2046.35    0.211   222.49
2047.35    0.214   223.08
2048.35    0.218   223.65
2049.35    0.220   224.21
2050.35    0.223   224.76
2051.35    0.225   225.29
2052.35    0.226   225.82
2053.35    0.228   226.34
2054.35    0.229   226.85
2055.35    0.229   227.36
2056.35    0.230   227.87
2057.35    0.230   228.37
2058.35    0.230   228.88
2059.35    0.229   229.38
2060.35    0.228   229.90
2061.35    0.227   230.41
2062.35    0.226   230.93
2063.35    0.225   231.46
2064.35    0.223   231.99
2065.35    0.221   232.53
2066.35    0.218   233.09
2067.35    0.216   233.66
2068.35    0.213   234.24
2069.35    0.210   234.84
2070.35    0.207   235.45
2071.35    0.204   236.08
2072.35    0.200   236.74
2073.35    0.196   237.42
2074.35    0.192   238.13
2075.35    0.188   238.87
2076.35    0.184   239.64
2077.35    0.180   240.44
2078.35    0.175   241.29
2079.35    0.171   242.18
2080.35    0.166   243.13
2081.35    0.161   244.13
2082.35    0.156   245.19
2083.35    0.151   246.32
2084.35    0.146   247.52
2085.35    0.141   248.82
2086.35    0.136   250.21
2087.35    0.131   251.71
2088.35    0.126   253.34
2089.35    0.120   255.11
2090.35    0.115   257.04
2091.35    0.110   259.15
2092.35    0.105   261.46
2093.35    0.100   264.01
2094.35    0.095   266.82
2095.35    0.090   269.93
2096.35    0.086   273.36
2097.35    0.082   277.16
2098.35    0.078   281.35
2099.35    0.075   285.94
2100.35    0.072   290.95
2101.35    0.069   296.35
2102.35    0.067   302.09
2103.35    0.066   308.10
2104.35    0.066   314.27
2105.35    0.066   320.46
2106.35    0.067   326.54
2107.35    0.068   332.39






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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:12:12



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