Double Star Calculator - Orbit

Orbital Elements for HU657
WDS: HU657 WDS ID/Discoverer
P: 371.500 Orbital period (years)
a: 0.581 Semi-major axis (arcseconds)
i: 123.9 Inclination (degrees)
Ω: 162.0 Longitude of ascending node (degrees)
T: 1974.300 Epoch of periastron passage (year)
e: 0.74 Eccentricity
ω: 202.7 Longitude of periastron (degrees)
Start-Year: 1839.25 Year
End-Year: 2210.75 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU657
Position: 154540.74+504020.8 Epoch-2000 right ascension and declination
WDS-ID: 15457+5040 WDS designation
Discoverer Code: HU657 Discover designation and components
ADS number: 9781 Aitken Double Star catalog
HD number: 234257 HD catalog number
Hipparcos number: 77188 Hipparcos catalog number
V1: 10.25 Magnitude of the primary
V2: 10.95 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 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: Doc2012k Reference

Double Star Orbit for HU657



WDS 6th Orbit including measures of HU657

-- 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 HU657
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.584   172.05
--------------------------
1839.25    0.848   141.37
1840.25    0.845   141.20
1841.25    0.842   141.03
1842.25    0.838   140.86
1843.25    0.835   140.68
1844.25    0.831   140.50
1845.25    0.828   140.33
1846.25    0.824   140.15
1847.25    0.820   139.96
1848.25    0.817   139.78
1849.25    0.813   139.60
1850.25    0.809   139.41
1851.25    0.805   139.22
1852.25    0.801   139.03
1853.25    0.797   138.84
1854.25    0.793   138.65
1855.25    0.789   138.45
1856.25    0.785   138.25
1857.25    0.781   138.05
1858.25    0.777   137.85
1859.25    0.773   137.64
1860.25    0.768   137.44
1861.25    0.764   137.23
1862.25    0.760   137.02
1863.25    0.755   136.80
1864.25    0.751   136.59
1865.25    0.746   136.37
1866.25    0.741   136.15
1867.25    0.737   135.92
1868.25    0.732   135.69
1869.25    0.727   135.46
1870.25    0.723   135.23
1871.25    0.718   134.99
1872.25    0.713   134.75
1873.25    0.708   134.51
1874.25    0.703   134.26
1875.25    0.698   134.01
1876.25    0.693   133.76
1877.25    0.688   133.50
1878.25    0.683   133.24
1879.25    0.677   132.98
1880.25    0.672   132.71
1881.25    0.667   132.43
1882.25    0.661   132.15
1883.25    0.656   131.87
1884.25    0.650   131.58
1885.25    0.645   131.29
1886.25    0.639   130.99
1887.25    0.634   130.69
1888.25    0.628   130.38
1889.25    0.622   130.07
1890.25    0.616   129.75
1891.25    0.611   129.42
1892.25    0.605   129.09
1893.25    0.599   128.75
1894.25    0.593   128.41
1895.25    0.587   128.05
1896.25    0.581   127.69
1897.25    0.574   127.32
1898.25    0.568   126.95
1899.25    0.562   126.56
1900.25    0.556   126.17
1901.25    0.549   125.77
1902.25    0.543   125.36
1903.25    0.536   124.94
1904.25    0.530   124.50
1905.25    0.523   124.06
1906.25    0.517   123.61
1907.25    0.510   123.14
1908.25    0.503   122.67
1909.25    0.497   122.17
1910.25    0.490   121.67
1911.25    0.483   121.15
1912.25    0.476   120.62
1913.25    0.469   120.07
1914.25    0.462   119.50
1915.25    0.455   118.92
1916.25    0.448   118.32
1917.25    0.441   117.70
1918.25    0.434   117.05
1919.25    0.426   116.39
1920.25    0.419   115.70
1921.25    0.412   114.99
1922.25    0.405   114.26
1923.25    0.397   113.49
1924.25    0.390   112.70
1925.25    0.382   111.88
1926.25    0.375   111.02
1927.25    0.367   110.13
1928.25    0.360   109.20
1929.25    0.352   108.24
1930.25    0.345   107.23
1931.25    0.337   106.17
1932.25    0.330   105.07
1933.25    0.322   103.92
1934.25    0.315   102.71
1935.25    0.307   101.44
1936.25    0.300   100.10
1937.25    0.292    98.70
1938.25    0.285    97.23
1939.25    0.277    95.68
1940.25    0.270    94.04
1941.25    0.263    92.31
1942.25    0.256    90.48
1943.25    0.249    88.56
1944.25    0.242    86.51
1945.25    0.235    84.36
1946.25    0.228    82.07
1947.25    0.222    79.65
1948.25    0.216    77.09
1949.25    0.210    74.38
1950.25    0.204    71.52
1951.25    0.199    68.50
1952.25    0.194    65.32
1953.25    0.189    61.98
1954.25    0.185    58.47
1955.25    0.181    54.81
1956.25    0.178    51.00
1957.25    0.175    47.05
1958.25    0.172    42.97
1959.25    0.170    38.79
1960.25    0.169    34.53
1961.25    0.168    30.19
1962.25    0.167    25.81
1963.25    0.167    21.40
1964.25    0.166    16.97
1965.25    0.166    12.53
1966.25    0.166     8.08
1967.25    0.166     3.62
1968.25    0.165   359.13
1969.25    0.164   354.59
1970.25    0.162   349.96
1971.25    0.159   345.18
1972.25    0.155   340.18
1973.25    0.150   334.88
1974.25    0.143   329.17
1975.25    0.137   322.91
1976.25    0.129   315.96
1977.25    0.122   308.19
1978.25    0.116   299.51
1979.25    0.111   289.96
1980.25    0.108   279.74
1981.25    0.108   269.24
1982.25    0.111   258.95
1983.25    0.116   249.33
1984.25    0.123   240.69
1985.25    0.132   233.12
1986.25    0.142   226.58
1987.25    0.154   220.98
1988.25    0.166   216.18
1989.25    0.179   212.04
1990.25    0.192   208.46
1991.25    0.205   205.33
1992.25    0.218   202.58
1993.25    0.231   200.14
1994.25    0.244   197.97
1995.25    0.257   196.01
1996.25    0.270   194.25
1997.25    0.283   192.64
1998.25    0.296   191.18
1999.25    0.308   189.83
2000.25    0.320   188.59
2001.25    0.333   187.44
2002.25    0.345   186.37
2003.25    0.356   185.37
2004.25    0.368   184.43
2005.25    0.379   183.55
2006.25    0.391   182.72
2007.25    0.402   181.94
2008.25    0.413   181.20
2009.25    0.423   180.50
2010.25    0.434   179.83
2011.25    0.444   179.19
2012.25    0.454   178.59
2013.25    0.464   178.01
2014.25    0.474   177.45
2015.25    0.484   176.91
2016.25    0.494   176.40
2017.25    0.503   175.91
2018.25    0.512   175.43
2019.25    0.522   174.97
2020.25    0.531   174.53
2021.25    0.539   174.10
2022.25    0.548   173.68
2023.25    0.557   173.28
2024.25    0.565   172.89
2025.25    0.573   172.51
2026.25    0.582   172.15
2027.25    0.590   171.79
2028.25    0.598   171.44
2029.25    0.605   171.10
2030.25    0.613   170.77
2031.25    0.621   170.45
2032.25    0.628   170.13
2033.25    0.635   169.82
2034.25    0.643   169.52
2035.25    0.650   169.23
2036.25    0.657   168.94
2037.25    0.664   168.66
2038.25    0.670   168.38
2039.25    0.677   168.11
2040.25    0.684   167.85
2041.25    0.690   167.59
2042.25    0.696   167.33
2043.25    0.703   167.08
2044.25    0.709   166.84
2045.25    0.715   166.59
2046.25    0.721   166.36
2047.25    0.727   166.12
2048.25    0.733   165.89
2049.25    0.738   165.67
2050.25    0.744   165.44
2051.25    0.750   165.22
2052.25    0.755   165.00
2053.25    0.760   164.79
2054.25    0.766   164.58
2055.25    0.771   164.37
2056.25    0.776   164.17
2057.25    0.781   163.96
2058.25    0.786   163.76
2059.25    0.791   163.57
2060.25    0.796   163.37
2061.25    0.800   163.18
2062.25    0.805   162.99
2063.25    0.809   162.80
2064.25    0.814   162.61
2065.25    0.818   162.43
2066.25    0.823   162.25
2067.25    0.827   162.07
2068.25    0.831   161.89
2069.25    0.835   161.71
2070.25    0.839   161.54
2071.25    0.843   161.36
2072.25    0.847   161.19
2073.25    0.851   161.02
2074.25    0.854   160.85
2075.25    0.858   160.68
2076.25    0.862   160.52
2077.25    0.865   160.35
2078.25    0.869   160.19
2079.25    0.872   160.03
2080.25    0.875   159.87
2081.25    0.879   159.71
2082.25    0.882   159.55
2083.25    0.885   159.39
2084.25    0.888   159.24
2085.25    0.891   159.08
2086.25    0.894   158.93
2087.25    0.897   158.77
2088.25    0.900   158.62
2089.25    0.902   158.47
2090.25    0.905   158.32
2091.25    0.908   158.17
2092.25    0.910   158.02
2093.25    0.913   157.88
2094.25    0.915   157.73
2095.25    0.918   157.58
2096.25    0.920   157.44
2097.25    0.922   157.29
2098.25    0.924   157.15
2099.25    0.927   157.00
2100.25    0.929   156.86
2101.25    0.931   156.72
2102.25    0.933   156.58
2103.25    0.935   156.44
2104.25    0.936   156.30
2105.25    0.938   156.16
2106.25    0.940   156.02
2107.25    0.942   155.88
2108.25    0.943   155.74
2109.25    0.945   155.60
2110.25    0.946   155.47
2111.25    0.948   155.33
2112.25    0.949   155.19
2113.25    0.951   155.06
2114.25    0.952   154.92
2115.25    0.953   154.79
2116.25    0.954   154.65
2117.25    0.956   154.52
2118.25    0.957   154.38
2119.25    0.958   154.25
2120.25    0.959   154.12
2121.25    0.960   153.98
2122.25    0.961   153.85
2123.25    0.961   153.72
2124.25    0.962   153.58
2125.25    0.963   153.45
2126.25    0.964   153.32
2127.25    0.964   153.19
2128.25    0.965   153.06
2129.25    0.965   152.92
2130.25    0.966   152.79
2131.25    0.966   152.66
2132.25    0.967   152.53
2133.25    0.967   152.40
2134.25    0.967   152.27
2135.25    0.967   152.14
2136.25    0.968   152.00
2137.25    0.968   151.87
2138.25    0.968   151.74
2139.25    0.968   151.61
2140.25    0.968   151.48
2141.25    0.968   151.35
2142.25    0.968   151.22
2143.25    0.968   151.09
2144.25    0.967   150.96
2145.25    0.967   150.82
2146.25    0.967   150.69
2147.25    0.966   150.56
2148.25    0.966   150.43
2149.25    0.966   150.30
2150.25    0.965   150.17
2151.25    0.965   150.04
2152.25    0.964   149.90
2153.25    0.963   149.77
2154.25    0.963   149.64
2155.25    0.962   149.51
2156.25    0.961   149.37
2157.25    0.960   149.24
2158.25    0.959   149.11
2159.25    0.958   148.97
2160.25    0.957   148.84
2161.25    0.956   148.71
2162.25    0.955   148.57
2163.25    0.954   148.44
2164.25    0.953   148.30
2165.25    0.952   148.17
2166.25    0.951   148.03
2167.25    0.949   147.90
2168.25    0.948   147.76
2169.25    0.947   147.62
2170.25    0.945   147.49
2171.25    0.944   147.35
2172.25    0.942   147.21
2173.25    0.941   147.07
2174.25    0.939   146.93
2175.25    0.937   146.79
2176.25    0.936   146.65
2177.25    0.934   146.51
2178.25    0.932   146.37
2179.25    0.930   146.23
2180.25    0.928   146.09
2181.25    0.926   145.95
2182.25    0.924   145.80
2183.25    0.922   145.66
2184.25    0.920   145.51
2185.25    0.918   145.37
2186.25    0.916   145.22
2187.25    0.914   145.08
2188.25    0.912   144.93
2189.25    0.909   144.78
2190.25    0.907   144.63
2191.25    0.904   144.48
2192.25    0.902   144.33
2193.25    0.900   144.18
2194.25    0.897   144.03
2195.25    0.894   143.88
2196.25    0.892   143.72
2197.25    0.889   143.57
2198.25    0.886   143.41
2199.25    0.884   143.25
2200.25    0.881   143.10
2201.25    0.878   142.94
2202.25    0.875   142.78
2203.25    0.872   142.62
2204.25    0.869   142.46
2205.25    0.866   142.29
2206.25    0.863   142.13
2207.25    0.860   141.96
2208.25    0.857   141.80
2209.25    0.853   141.63
2210.25    0.850   141.46






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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 17:19:18



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