Double Star Calculator - Orbit

Orbital Elements for COU540
WDS: COU540 WDS ID/Discoverer
P: 262.320 Orbital period (years)
a: 0.282 Semi-major axis (arcseconds)
i: 0.9 Inclination (degrees)
Ω: 13.5 Longitude of ascending node (degrees)
T: 1926.160 Epoch of periastron passage (year)
e: 0.285 Eccentricity
ω: 162.5 Longitude of periastron (degrees)
Start-Year: 1893.84 Year
End-Year: 2156.16 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU540
Position: 223422.88+262309.4 Epoch-2000 right ascension and declination
WDS-ID: 22344+2623 WDS designation
Discoverer Code: COU540 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 213919 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.9 Magnitude of the primary
V2: 9.3 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1996 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Mnt2004a Reference

Double Star Orbit for COU540



WDS 6th Orbit including measures of COU540

-- 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 COU540
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.349   330.83
--------------------------
1893.84    0.240   102.50
1894.84    0.238   104.33
1895.84    0.236   106.20
1896.84    0.234   108.09
1897.84    0.232   110.02
1898.84    0.230   111.98
1899.84    0.229   113.96
1900.84    0.227   115.98
1901.84    0.225   118.03
1902.84    0.223   120.11
1903.84    0.222   122.22
1904.84    0.220   124.37
1905.84    0.219   126.54
1906.84    0.217   128.75
1907.84    0.216   130.98
1908.84    0.214   133.25
1909.84    0.213   135.54
1910.84    0.212   137.86
1911.84    0.210   140.21
1912.84    0.209   142.58
1913.84    0.208   144.98
1914.84    0.207   147.41
1915.84    0.206   149.86
1916.84    0.205   152.32
1917.84    0.205   154.81
1918.84    0.204   157.32
1919.84    0.203   159.84
1920.84    0.203   162.37
1921.84    0.202   164.92
1922.84    0.202   167.47
1923.84    0.202   170.04
1924.84    0.202   172.61
1925.84    0.202   175.18
1926.84    0.202   177.75
1927.84    0.202   180.32
1928.84    0.202   182.89
1929.84    0.202   185.45
1930.84    0.203   188.00
1931.84    0.203   190.55
1932.84    0.204   193.08
1933.84    0.204   195.59
1934.84    0.205   198.09
1935.84    0.206   200.57
1936.84    0.207   203.03
1937.84    0.208   205.47
1938.84    0.209   207.88
1939.84    0.210   210.28
1940.84    0.211   212.64
1941.84    0.212   214.98
1942.84    0.213   217.29
1943.84    0.215   219.57
1944.84    0.216   221.83
1945.84    0.218   224.05
1946.84    0.219   226.24
1947.84    0.221   228.41
1948.84    0.222   230.54
1949.84    0.224   232.64
1950.84    0.226   234.71
1951.84    0.227   236.75
1952.84    0.229   238.75
1953.84    0.231   240.73
1954.84    0.233   242.67
1955.84    0.235   244.59
1956.84    0.237   246.47
1957.84    0.238   248.33
1958.84    0.240   250.15
1959.84    0.242   251.95
1960.84    0.244   253.72
1961.84    0.246   255.45
1962.84    0.248   257.17
1963.84    0.250   258.85
1964.84    0.252   260.51
1965.84    0.254   262.14
1966.84    0.256   263.75
1967.84    0.258   265.33
1968.84    0.260   266.88
1969.84    0.262   268.42
1970.84    0.264   269.93
1971.84    0.266   271.41
1972.84    0.268   272.88
1973.84    0.270   274.32
1974.84    0.272   275.74
1975.84    0.274   277.15
1976.84    0.276   278.53
1977.84    0.278   279.89
1978.84    0.280   281.23
1979.84    0.282   282.56
1980.84    0.284   283.86
1981.84    0.286   285.15
1982.84    0.288   286.43
1983.84    0.290   287.68
1984.84    0.291   288.92
1985.84    0.293   290.14
1986.84    0.295   291.35
1987.84    0.297   292.55
1988.84    0.299   293.73
1989.84    0.300   294.89
1990.84    0.302   296.04
1991.84    0.304   297.18
1992.84    0.306   298.31
1993.84    0.307   299.42
1994.84    0.309   300.53
1995.84    0.311   301.62
1996.84    0.312   302.69
1997.84    0.314   303.76
1998.84    0.315   304.82
1999.84    0.317   305.86
2000.84    0.318   306.90
2001.84    0.320   307.93
2002.84    0.321   308.94
2003.84    0.323   309.95
2004.84    0.324   310.95
2005.84    0.326   311.94
2006.84    0.327   312.92
2007.84    0.329   313.89
2008.84    0.330   314.86
2009.84    0.331   315.82
2010.84    0.332   316.77
2011.84    0.334   317.71
2012.84    0.335   318.64
2013.84    0.336   319.57
2014.84    0.337   320.50
2015.84    0.338   321.41
2016.84    0.340   322.32
2017.84    0.341   323.23
2018.84    0.342   324.12
2019.84    0.343   325.02
2020.84    0.344   325.90
2021.84    0.345   326.79
2022.84    0.346   327.66
2023.84    0.347   328.53
2024.84    0.348   329.40
2025.84    0.349   330.27
2026.84    0.349   331.12
2027.84    0.350   331.98
2028.84    0.351   332.83
2029.84    0.352   333.68
2030.84    0.353   334.52
2031.84    0.353   335.36
2032.84    0.354   336.20
2033.84    0.355   337.03
2034.84    0.355   337.86
2035.84    0.356   338.69
2036.84    0.357   339.51
2037.84    0.357   340.33
2038.84    0.358   341.15
2039.84    0.358   341.97
2040.84    0.359   342.78
2041.84    0.359   343.59
2042.84    0.359   344.40
2043.84    0.360   345.21
2044.84    0.360   346.02
2045.84    0.361   346.83
2046.84    0.361   347.63
2047.84    0.361   348.43
2048.84    0.361   349.23
2049.84    0.362   350.04
2050.84    0.362   350.83
2051.84    0.362   351.63
2052.84    0.362   352.43
2053.84    0.362   353.23
2054.84    0.362   354.03
2055.84    0.362   354.82
2056.84    0.362   355.62
2057.84    0.362   356.42
2058.84    0.362   357.21
2059.84    0.362   358.01
2060.84    0.362   358.81
2061.84    0.362   359.60
2062.84    0.362     0.40
2063.84    0.362     1.20
2064.84    0.362     2.00
2065.84    0.361     2.80
2066.84    0.361     3.60
2067.84    0.361     4.41
2068.84    0.361     5.21
2069.84    0.360     6.02
2070.84    0.360     6.82
2071.84    0.359     7.63
2072.84    0.359     8.44
2073.84    0.359     9.25
2074.84    0.358    10.07
2075.84    0.358    10.89
2076.84    0.357    11.71
2077.84    0.356    12.53
2078.84    0.356    13.35
2079.84    0.355    14.18
2080.84    0.355    15.01
2081.84    0.354    15.84
2082.84    0.353    16.68
2083.84    0.353    17.52
2084.84    0.352    18.36
2085.84    0.351    19.21
2086.84    0.350    20.06
2087.84    0.349    20.91
2088.84    0.349    21.77
2089.84    0.348    22.63
2090.84    0.347    23.50
2091.84    0.346    24.37
2092.84    0.345    25.25
2093.84    0.344    26.13
2094.84    0.343    27.02
2095.84    0.342    27.91
2096.84    0.341    28.81
2097.84    0.340    29.72
2098.84    0.338    30.63
2099.84    0.337    31.54
2100.84    0.336    32.47
2101.84    0.335    33.39
2102.84    0.334    34.33
2103.84    0.332    35.27
2104.84    0.331    36.22
2105.84    0.330    37.18
2106.84    0.329    38.15
2107.84    0.327    39.12
2108.84    0.326    40.10
2109.84    0.324    41.09
2110.84    0.323    42.09
2111.84    0.321    43.10
2112.84    0.320    44.11
2113.84    0.318    45.14
2114.84    0.317    46.18
2115.84    0.315    47.22
2116.84    0.314    48.28
2117.84    0.312    49.35
2118.84    0.311    50.43
2119.84    0.309    51.52
2120.84    0.307    52.62
2121.84    0.306    53.73
2122.84    0.304    54.86
2123.84    0.302    56.00
2124.84    0.300    57.15
2125.84    0.299    58.32
2126.84    0.297    59.50
2127.84    0.295    60.69
2128.84    0.293    61.90
2129.84    0.291    63.13
2130.84    0.289    64.37
2131.84    0.288    65.62
2132.84    0.286    66.90
2133.84    0.284    68.18
2134.84    0.282    69.49
2135.84    0.280    70.82
2136.84    0.278    72.16
2137.84    0.276    73.52
2138.84    0.274    74.91
2139.84    0.272    76.31
2140.84    0.270    77.73
2141.84    0.268    79.18
2142.84    0.266    80.64
2143.84    0.264    82.13
2144.84    0.262    83.64
2145.84    0.260    85.17
2146.84    0.258    86.73
2147.84    0.256    88.31
2148.84    0.254    89.92
2149.84    0.252    91.55
2150.84    0.250    93.21
2151.84    0.248    94.90
2152.84    0.246    96.61
2153.84    0.244    98.35
2154.84    0.242   100.12
2155.84    0.240   101.92






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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 18:41:43



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