Double Star Calculator - Orbit

Orbital Elements for COU547
WDS: COU547 WDS ID/Discoverer
P: 265.000 Orbital period (years)
a: 0.322 Semi-major axis (arcseconds)
i: 79.9 Inclination (degrees)
Ω: 31.7 Longitude of ascending node (degrees)
T: 1984.900 Epoch of periastron passage (year)
e: 0.737 Eccentricity
ω: 295.9 Longitude of periastron (degrees)
Start-Year: 1892.5 Year
End-Year: 2157.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU547
Position: 003200.65+273944.1 Epoch-2000 right ascension and declination
WDS-ID: 00320+2740 WDS designation
Discoverer Code: COU547 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 2854 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.9 Magnitude of the primary
V2: 9.1 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2007 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: Zir2010b Reference

Double Star Orbit for COU547



WDS 6th Orbit including measures of COU547

-- 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 COU547
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.093    72.99
--------------------------
1892.50    0.335   199.34
1893.50    0.336   199.48
1894.50    0.337   199.63
1895.50    0.338   199.78
1896.50    0.339   199.92
1897.50    0.340   200.07
1898.50    0.341   200.21
1899.50    0.342   200.36
1900.50    0.343   200.50
1901.50    0.343   200.64
1902.50    0.344   200.78
1903.50    0.345   200.92
1904.50    0.345   201.06
1905.50    0.346   201.20
1906.50    0.347   201.34
1907.50    0.347   201.48
1908.50    0.347   201.62
1909.50    0.348   201.76
1910.50    0.348   201.90
1911.50    0.348   202.03
1912.50    0.349   202.17
1913.50    0.349   202.31
1914.50    0.349   202.44
1915.50    0.349   202.58
1916.50    0.349   202.72
1917.50    0.349   202.86
1918.50    0.349   202.99
1919.50    0.348   203.13
1920.50    0.348   203.27
1921.50    0.348   203.41
1922.50    0.347   203.54
1923.50    0.347   203.68
1924.50    0.346   203.82
1925.50    0.346   203.96
1926.50    0.345   204.10
1927.50    0.344   204.24
1928.50    0.343   204.38
1929.50    0.342   204.53
1930.50    0.341   204.67
1931.50    0.340   204.81
1932.50    0.339   204.96
1933.50    0.338   205.10
1934.50    0.336   205.25
1935.50    0.335   205.40
1936.50    0.333   205.55
1937.50    0.331   205.70
1938.50    0.329   205.85
1939.50    0.327   206.01
1940.50    0.325   206.16
1941.50    0.323   206.32
1942.50    0.321   206.48
1943.50    0.318   206.65
1944.50    0.316   206.81
1945.50    0.313   206.98
1946.50    0.310   207.15
1947.50    0.307   207.33
1948.50    0.304   207.51
1949.50    0.301   207.69
1950.50    0.297   207.88
1951.50    0.294   208.07
1952.50    0.290   208.26
1953.50    0.286   208.46
1954.50    0.282   208.67
1955.50    0.277   208.88
1956.50    0.273   209.11
1957.50    0.268   209.33
1958.50    0.263   209.57
1959.50    0.258   209.82
1960.50    0.252   210.07
1961.50    0.246   210.34
1962.50    0.240   210.62
1963.50    0.234   210.92
1964.50    0.227   211.24
1965.50    0.220   211.57
1966.50    0.212   211.93
1967.50    0.204   212.32
1968.50    0.196   212.73
1969.50    0.187   213.19
1970.50    0.178   213.69
1971.50    0.168   214.25
1972.50    0.157   214.89
1973.50    0.146   215.61
1974.50    0.134   216.47
1975.50    0.122   217.49
1976.50    0.108   218.76
1977.50    0.094   220.40
1978.50    0.079   222.65
1979.50    0.063   225.99
1980.50    0.047   231.64
1981.50    0.030   243.41
1982.50    0.017   276.69
1983.50    0.019   338.91
1984.50    0.033     6.68
1985.50    0.049    17.04
1986.50    0.064    22.33
1987.50    0.078    25.64
1988.50    0.090    28.00
1989.50    0.101    29.83
1990.50    0.109    31.34
1991.50    0.116    32.65
1992.50    0.122    33.82
1993.50    0.127    34.90
1994.50    0.131    35.90
1995.50    0.134    36.86
1996.50    0.136    37.78
1997.50    0.137    38.67
1998.50    0.138    39.55
1999.50    0.139    40.41
2000.50    0.139    41.28
2001.50    0.139    42.14
2002.50    0.139    43.01
2003.50    0.138    43.88
2004.50    0.137    44.76
2005.50    0.136    45.66
2006.50    0.134    46.58
2007.50    0.133    47.51
2008.50    0.131    48.47
2009.50    0.129    49.45
2010.50    0.128    50.46
2011.50    0.126    51.51
2012.50    0.124    52.58
2013.50    0.121    53.69
2014.50    0.119    54.84
2015.50    0.117    56.04
2016.50    0.115    57.28
2017.50    0.113    58.57
2018.50    0.110    59.91
2019.50    0.108    61.31
2020.50    0.106    62.77
2021.50    0.104    64.29
2022.50    0.101    65.88
2023.50    0.099    67.54
2024.50    0.097    69.28
2025.50    0.095    71.09
2026.50    0.093    72.99
2027.50    0.091    74.97
2028.50    0.089    77.03
2029.50    0.087    79.19
2030.50    0.085    81.43
2031.50    0.084    83.76
2032.50    0.082    86.18
2033.50    0.081    88.69
2034.50    0.080    91.28
2035.50    0.079    93.95
2036.50    0.078    96.69
2037.50    0.077    99.49
2038.50    0.076   102.34
2039.50    0.076   105.23
2040.50    0.075   108.15
2041.50    0.075   111.09
2042.50    0.075   114.02
2043.50    0.076   116.95
2044.50    0.076   119.84
2045.50    0.077   122.70
2046.50    0.078   125.50
2047.50    0.079   128.25
2048.50    0.080   130.92
2049.50    0.081   133.51
2050.50    0.082   136.02
2051.50    0.084   138.44
2052.50    0.085   140.78
2053.50    0.087   143.01
2054.50    0.089   145.16
2055.50    0.091   147.22
2056.50    0.093   149.18
2057.50    0.095   151.06
2058.50    0.098   152.85
2059.50    0.100   154.56
2060.50    0.102   156.18
2061.50    0.105   157.74
2062.50    0.107   159.22
2063.50    0.110   160.63
2064.50    0.113   161.98
2065.50    0.115   163.26
2066.50    0.118   164.49
2067.50    0.121   165.66
2068.50    0.124   166.78
2069.50    0.126   167.85
2070.50    0.129   168.87
2071.50    0.132   169.85
2072.50    0.135   170.79
2073.50    0.138   171.69
2074.50    0.141   172.55
2075.50    0.144   173.38
2076.50    0.146   174.18
2077.50    0.149   174.94
2078.50    0.152   175.67
2079.50    0.155   176.38
2080.50    0.158   177.06
2081.50    0.161   177.72
2082.50    0.164   178.35
2083.50    0.167   178.96
2084.50    0.170   179.55
2085.50    0.173   180.12
2086.50    0.176   180.67
2087.50    0.179   181.20
2088.50    0.182   181.71
2089.50    0.184   182.21
2090.50    0.187   182.70
2091.50    0.190   183.16
2092.50    0.193   183.62
2093.50    0.196   184.06
2094.50    0.199   184.49
2095.50    0.202   184.91
2096.50    0.204   185.31
2097.50    0.207   185.70
2098.50    0.210   186.09
2099.50    0.213   186.46
2100.50    0.216   186.82
2101.50    0.218   187.18
2102.50    0.221   187.52
2103.50    0.224   187.86
2104.50    0.227   188.19
2105.50    0.229   188.51
2106.50    0.232   188.83
2107.50    0.235   189.13
2108.50    0.237   189.43
2109.50    0.240   189.73
2110.50    0.242   190.01
2111.50    0.245   190.30
2112.50    0.248   190.57
2113.50    0.250   190.84
2114.50    0.253   191.10
2115.50    0.255   191.36
2116.50    0.258   191.62
2117.50    0.260   191.87
2118.50    0.262   192.11
2119.50    0.265   192.35
2120.50    0.267   192.59
2121.50    0.270   192.82
2122.50    0.272   193.05
2123.50    0.274   193.27
2124.50    0.276   193.49
2125.50    0.279   193.71
2126.50    0.281   193.92
2127.50    0.283   194.13
2128.50    0.285   194.34
2129.50    0.287   194.54
2130.50    0.290   194.74
2131.50    0.292   194.94
2132.50    0.294   195.14
2133.50    0.296   195.33
2134.50    0.298   195.52
2135.50    0.300   195.70
2136.50    0.302   195.89
2137.50    0.304   196.07
2138.50    0.305   196.25
2139.50    0.307   196.43
2140.50    0.309   196.61
2141.50    0.311   196.78
2142.50    0.313   196.95
2143.50    0.314   197.12
2144.50    0.316   197.29
2145.50    0.318   197.46
2146.50    0.319   197.62
2147.50    0.321   197.78
2148.50    0.322   197.94
2149.50    0.324   198.10
2150.50    0.325   198.26
2151.50    0.327   198.42
2152.50    0.328   198.58
2153.50    0.330   198.73
2154.50    0.331   198.88
2155.50    0.332   199.03
2156.50    0.333   199.19






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 14:40:13



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