Double Star Calculator - Orbit

Orbital Elements for COU227
WDS: COU227 WDS ID/Discoverer
P: 198.660 Orbital period (years)
a: 0.669 Semi-major axis (arcseconds)
i: 52.9 Inclination (degrees)
Ω: 126.3 Longitude of ascending node (degrees)
T: 2031.700 Epoch of periastron passage (year)
e: 0.299 Eccentricity
ω: 44.5 Longitude of periastron (degrees)
Start-Year: 1925.67 Year
End-Year: 2124.33 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU227
Position: 211128.93+214401.0 Epoch-2000 right ascension and declination
WDS-ID: 21115+2144 WDS designation
Discoverer Code: COU227 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 104612 Hipparcos catalog number
V1: 10.05 Magnitude of the primary
V2: 11.77 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 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: FMR2012b Reference

Double Star Orbit for COU227



WDS 6th Orbit including measures of COU227

-- 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 COU227
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.444   142.93
--------------------------
1925.67    0.757   331.23
1926.67    0.752   332.05
1927.67    0.747   332.88
1928.67    0.742   333.73
1929.67    0.736   334.58
1930.67    0.730   335.45
1931.67    0.725   336.33
1932.67    0.719   337.23
1933.67    0.713   338.14
1934.67    0.706   339.07
1935.67    0.700   340.01
1936.67    0.694   340.97
1937.67    0.687   341.95
1938.67    0.680   342.95
1939.67    0.673   343.97
1940.67    0.667   345.01
1941.67    0.660   346.07
1942.67    0.653   347.16
1943.67    0.645   348.26
1944.67    0.638   349.40
1945.67    0.631   350.56
1946.67    0.624   351.74
1947.67    0.616   352.96
1948.67    0.609   354.20
1949.67    0.602   355.48
1950.67    0.595   356.78
1951.67    0.587   358.12
1952.67    0.580   359.49
1953.67    0.573     0.89
1954.67    0.566     2.33
1955.67    0.559     3.81
1956.67    0.552     5.33
1957.67    0.545     6.88
1958.67    0.538     8.47
1959.67    0.532    10.10
1960.67    0.525    11.77
1961.67    0.519    13.48
1962.67    0.513    15.24
1963.67    0.507    17.03
1964.67    0.502    18.87
1965.67    0.496    20.74
1966.67    0.491    22.66
1967.67    0.486    24.61
1968.67    0.482    26.60
1969.67    0.478    28.63
1970.67    0.474    30.70
1971.67    0.470    32.79
1972.67    0.467    34.92
1973.67    0.464    37.08
1974.67    0.461    39.26
1975.67    0.459    41.46
1976.67    0.457    43.69
1977.67    0.456    45.93
1978.67    0.455    48.18
1979.67    0.454    50.44
1980.67    0.454    52.70
1981.67    0.454    54.97
1982.67    0.454    57.23
1983.67    0.455    59.49
1984.67    0.456    61.74
1985.67    0.458    63.98
1986.67    0.459    66.20
1987.67    0.461    68.40
1988.67    0.464    70.58
1989.67    0.466    72.74
1990.67    0.469    74.88
1991.67    0.472    76.99
1992.67    0.475    79.08
1993.67    0.478    81.14
1994.67    0.481    83.17
1995.67    0.484    85.17
1996.67    0.488    87.15
1997.67    0.491    89.09
1998.67    0.495    91.01
1999.67    0.498    92.91
2000.67    0.501    94.78
2001.67    0.504    96.63
2002.67    0.507    98.46
2003.67    0.510   100.26
2004.67    0.512   102.05
2005.67    0.514   103.83
2006.67    0.516   105.58
2007.67    0.517   107.33
2008.67    0.519   109.07
2009.67    0.519   110.81
2010.67    0.519   112.54
2011.67    0.519   114.27
2012.67    0.518   116.00
2013.67    0.517   117.74
2014.67    0.515   119.50
2015.67    0.513   121.26
2016.67    0.509   123.05
2017.67    0.506   124.87
2018.67    0.501   126.71
2019.67    0.496   128.59
2020.67    0.490   130.51
2021.67    0.484   132.47
2022.67    0.477   134.50
2023.67    0.469   136.59
2024.67    0.460   138.75
2025.67    0.452   141.00
2026.67    0.442   143.33
2027.67    0.432   145.78
2028.67    0.422   148.34
2029.67    0.411   151.03
2030.67    0.400   153.87
2031.67    0.389   156.87
2032.67    0.378   160.04
2033.67    0.367   163.40
2034.67    0.357   166.96
2035.67    0.346   170.74
2036.67    0.337   174.75
2037.67    0.328   178.97
2038.67    0.320   183.41
2039.67    0.314   188.06
2040.67    0.308   192.90
2041.67    0.304   197.87
2042.67    0.302   202.96
2043.67    0.301   208.09
2044.67    0.302   213.22
2045.67    0.305   218.28
2046.67    0.309   223.23
2047.67    0.315   228.03
2048.67    0.322   232.62
2049.67    0.331   237.00
2050.67    0.341   241.14
2051.67    0.351   245.04
2052.67    0.363   248.70
2053.67    0.375   252.12
2054.67    0.388   255.33
2055.67    0.402   258.32
2056.67    0.415   261.12
2057.67    0.429   263.74
2058.67    0.443   266.20
2059.67    0.457   268.50
2060.67    0.472   270.66
2061.67    0.486   272.70
2062.67    0.500   274.62
2063.67    0.514   276.44
2064.67    0.528   278.16
2065.67    0.541   279.79
2066.67    0.555   281.35
2067.67    0.568   282.83
2068.67    0.581   284.25
2069.67    0.593   285.60
2070.67    0.605   286.90
2071.67    0.617   288.15
2072.67    0.629   289.35
2073.67    0.640   290.51
2074.67    0.651   291.64
2075.67    0.661   292.72
2076.67    0.671   293.77
2077.67    0.681   294.79
2078.67    0.690   295.79
2079.67    0.699   296.75
2080.67    0.708   297.70
2081.67    0.716   298.62
2082.67    0.724   299.52
2083.67    0.732   300.40
2084.67    0.739   301.26
2085.67    0.745   302.11
2086.67    0.752   302.94
2087.67    0.758   303.76
2088.67    0.763   304.57
2089.67    0.769   305.37
2090.67    0.773   306.15
2091.67    0.778   306.93
2092.67    0.782   307.69
2093.67    0.786   308.45
2094.67    0.789   309.21
2095.67    0.793   309.95
2096.67    0.795   310.69
2097.67    0.798   311.43
2098.67    0.800   312.16
2099.67    0.802   312.89
2100.67    0.803   313.61
2101.67    0.805   314.33
2102.67    0.805   315.05
2103.67    0.806   315.77
2104.67    0.806   316.49
2105.67    0.806   317.21
2106.67    0.806   317.93
2107.67    0.805   318.65
2108.67    0.804   319.37
2109.67    0.803   320.09
2110.67    0.802   320.82
2111.67    0.800   321.54
2112.67    0.798   322.28
2113.67    0.796   323.01
2114.67    0.793   323.75
2115.67    0.790   324.50
2116.67    0.787   325.25
2117.67    0.784   326.00
2118.67    0.781   326.77
2119.67    0.777   327.54
2120.67    0.773   328.31
2121.67    0.769   329.10
2122.67    0.764   329.89
2123.67    0.760   330.70






Disclaimer
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 18:23:20



www.stella-vega.de