Double Star Calculator - Orbit

Orbital Elements for HU641
WDS: HU641 WDS ID/Discoverer
P: 323.480 Orbital period (years)
a: 0.366 Semi-major axis (arcseconds)
i: 140.8 Inclination (degrees)
Ω: 58.3 Longitude of ascending node (degrees)
T: 1963.410 Epoch of periastron passage (year)
e: 0.51 Eccentricity
ω: 357.8 Longitude of periastron (degrees)
Start-Year: 1863.26 Year
End-Year: 2186.74 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU641
Position: 125753.94+494816.8 Epoch-2000 right ascension and declination
WDS-ID: 12579+4948 WDS designation
Discoverer Code: HU641 Discover designation and components
ADS number: 8718 Aitken Double Star catalog
HD number: 233997 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.3 Magnitude of the primary
V2: 10.3 Magnitude of the secondary
Equinox: Equinox
Date: 1980 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Erc1986b Reference

Double Star Orbit for HU641



WDS 6th Orbit including measures of HU641

-- 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 HU641
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.340   285.18
--------------------------
1863.26    0.474   217.84
1864.26    0.471   217.40
1865.26    0.469   216.95
1866.26    0.466   216.49
1867.26    0.463   216.03
1868.26    0.460   215.57
1869.26    0.457   215.10
1870.26    0.455   214.62
1871.26    0.452   214.13
1872.26    0.449   213.64
1873.26    0.446   213.15
1874.26    0.442   212.64
1875.26    0.439   212.13
1876.26    0.436   211.61
1877.26    0.433   211.08
1878.26    0.430   210.55
1879.26    0.426   210.01
1880.26    0.423   209.46
1881.26    0.419   208.90
1882.26    0.416   208.33
1883.26    0.412   207.75
1884.26    0.409   207.16
1885.26    0.405   206.56
1886.26    0.402   205.95
1887.26    0.398   205.33
1888.26    0.394   204.69
1889.26    0.391   204.05
1890.26    0.387   203.39
1891.26    0.383   202.72
1892.26    0.379   202.04
1893.26    0.375   201.34
1894.26    0.371   200.62
1895.26    0.367   199.90
1896.26    0.363   199.15
1897.26    0.359   198.39
1898.26    0.355   197.61
1899.26    0.351   196.81
1900.26    0.347   196.00
1901.26    0.343   195.16
1902.26    0.338   194.30
1903.26    0.334   193.42
1904.26    0.330   192.52
1905.26    0.326   191.60
1906.26    0.321   190.65
1907.26    0.317   189.67
1908.26    0.313   188.67
1909.26    0.308   187.63
1910.26    0.304   186.57
1911.26    0.299   185.48
1912.26    0.295   184.35
1913.26    0.290   183.19
1914.26    0.286   182.00
1915.26    0.282   180.76
1916.26    0.277   179.49
1917.26    0.273   178.18
1918.26    0.268   176.82
1919.26    0.264   175.42
1920.26    0.260   173.97
1921.26    0.255   172.47
1922.26    0.251   170.91
1923.26    0.247   169.31
1924.26    0.242   167.65
1925.26    0.238   165.93
1926.26    0.234   164.15
1927.26    0.230   162.30
1928.26    0.226   160.40
1929.26    0.222   158.42
1930.26    0.219   156.38
1931.26    0.215   154.26
1932.26    0.211   152.07
1933.26    0.208   149.81
1934.26    0.205   147.48
1935.26    0.202   145.07
1936.26    0.199   142.59
1937.26    0.196   140.03
1938.26    0.193   137.40
1939.26    0.191   134.70
1940.26    0.188   131.93
1941.26    0.186   129.10
1942.26    0.184   126.21
1943.26    0.183   123.26
1944.26    0.181   120.26
1945.26    0.180   117.21
1946.26    0.179   114.13
1947.26    0.178   111.01
1948.26    0.177   107.86
1949.26    0.177   104.69
1950.26    0.177   101.51
1951.26    0.176    98.31
1952.26    0.176    95.12
1953.26    0.176    91.92
1954.26    0.177    88.73
1955.26    0.177    85.54
1956.26    0.177    82.37
1957.26    0.177    79.20
1958.26    0.178    76.05
1959.26    0.178    72.91
1960.26    0.178    69.79
1961.26    0.179    66.67
1962.26    0.179    63.57
1963.26    0.179    60.47
1964.26    0.179    57.38
1965.26    0.180    54.30
1966.26    0.180    51.21
1967.26    0.180    48.13
1968.26    0.180    45.05
1969.26    0.180    41.97
1970.26    0.180    38.89
1971.26    0.179    35.81
1972.26    0.179    32.72
1973.26    0.179    29.64
1974.26    0.180    26.55
1975.26    0.180    23.47
1976.26    0.180    20.40
1977.26    0.180    17.34
1978.26    0.181    14.28
1979.26    0.181    11.25
1980.26    0.182     8.24
1981.26    0.183     5.26
1982.26    0.184     2.31
1983.26    0.185   359.40
1984.26    0.187   356.52
1985.26    0.188   353.70
1986.26    0.190   350.92
1987.26    0.192   348.20
1988.26    0.194   345.53
1989.26    0.196   342.93
1990.26    0.199   340.39
1991.26    0.202   337.91
1992.26    0.204   335.50
1993.26    0.207   333.15
1994.26    0.210   330.87
1995.26    0.214   328.66
1996.26    0.217   326.51
1997.26    0.220   324.43
1998.26    0.224   322.41
1999.26    0.227   320.46
2000.26    0.231   318.57
2001.26    0.235   316.74
2002.26    0.239   314.96
2003.26    0.243   313.25
2004.26    0.247   311.59
2005.26    0.251   309.98
2006.26    0.255   308.42
2007.26    0.259   306.91
2008.26    0.263   305.45
2009.26    0.267   304.04
2010.26    0.271   302.67
2011.26    0.276   301.34
2012.26    0.280   300.05
2013.26    0.284   298.80
2014.26    0.288   297.59
2015.26    0.293   296.41
2016.26    0.297   295.26
2017.26    0.301   294.15
2018.26    0.305   293.07
2019.26    0.310   292.02
2020.26    0.314   291.00
2021.26    0.318   290.00
2022.26    0.322   289.03
2023.26    0.326   288.09
2024.26    0.331   287.16
2025.26    0.335   286.27
2026.26    0.339   285.39
2027.26    0.343   284.53
2028.26    0.347   283.70
2029.26    0.351   282.88
2030.26    0.355   282.08
2031.26    0.359   281.30
2032.26    0.363   280.54
2033.26    0.367   279.80
2034.26    0.371   279.07
2035.26    0.375   278.35
2036.26    0.378   277.65
2037.26    0.382   276.96
2038.26    0.386   276.29
2039.26    0.390   275.63
2040.26    0.393   274.98
2041.26    0.397   274.34
2042.26    0.401   273.72
2043.26    0.404   273.10
2044.26    0.408   272.50
2045.26    0.411   271.91
2046.26    0.415   271.32
2047.26    0.418   270.75
2048.26    0.421   270.19
2049.26    0.425   269.63
2050.26    0.428   269.08
2051.26    0.431   268.54
2052.26    0.434   268.01
2053.26    0.437   267.49
2054.26    0.441   266.97
2055.26    0.444   266.47
2056.26    0.447   265.97
2057.26    0.450   265.47
2058.26    0.453   264.98
2059.26    0.456   264.50
2060.26    0.458   264.02
2061.26    0.461   263.55
2062.26    0.464   263.09
2063.26    0.467   262.63
2064.26    0.469   262.18
2065.26    0.472   261.73
2066.26    0.475   261.29
2067.26    0.477   260.85
2068.26    0.480   260.41
2069.26    0.482   259.98
2070.26    0.485   259.56
2071.26    0.487   259.14
2072.26    0.489   258.72
2073.26    0.492   258.31
2074.26    0.494   257.90
2075.26    0.496   257.49
2076.26    0.498   257.09
2077.26    0.501   256.69
2078.26    0.503   256.30
2079.26    0.505   255.91
2080.26    0.507   255.52
2081.26    0.509   255.13
2082.26    0.511   254.75
2083.26    0.512   254.37
2084.26    0.514   253.99
2085.26    0.516   253.62
2086.26    0.518   253.25
2087.26    0.520   252.88
2088.26    0.521   252.51
2089.26    0.523   252.15
2090.26    0.524   251.78
2091.26    0.526   251.42
2092.26    0.527   251.06
2093.26    0.529   250.71
2094.26    0.530   250.35
2095.26    0.532   250.00
2096.26    0.533   249.65
2097.26    0.534   249.30
2098.26    0.535   248.95
2099.26    0.537   248.61
2100.26    0.538   248.26
2101.26    0.539   247.92
2102.26    0.540   247.58
2103.26    0.541   247.24
2104.26    0.542   246.90
2105.26    0.543   246.56
2106.26    0.544   246.23
2107.26    0.545   245.89
2108.26    0.545   245.56
2109.26    0.546   245.22
2110.26    0.547   244.89
2111.26    0.548   244.56
2112.26    0.548   244.23
2113.26    0.549   243.90
2114.26    0.549   243.57
2115.26    0.550   243.24
2116.26    0.550   242.91
2117.26    0.551   242.58
2118.26    0.551   242.25
2119.26    0.551   241.93
2120.26    0.552   241.60
2121.26    0.552   241.27
2122.26    0.552   240.95
2123.26    0.552   240.62
2124.26    0.552   240.29
2125.26    0.553   239.97
2126.26    0.553   239.64
2127.26    0.553   239.32
2128.26    0.552   238.99
2129.26    0.552   238.67
2130.26    0.552   238.34
2131.26    0.552   238.02
2132.26    0.552   237.69
2133.26    0.552   237.36
2134.26    0.551   237.04
2135.26    0.551   236.71
2136.26    0.551   236.38
2137.26    0.550   236.05
2138.26    0.550   235.72
2139.26    0.549   235.40
2140.26    0.549   235.07
2141.26    0.548   234.73
2142.26    0.547   234.40
2143.26    0.547   234.07
2144.26    0.546   233.74
2145.26    0.545   233.40
2146.26    0.544   233.07
2147.26    0.543   232.73
2148.26    0.542   232.40
2149.26    0.542   232.06
2150.26    0.541   231.72
2151.26    0.539   231.38
2152.26    0.538   231.04
2153.26    0.537   230.69
2154.26    0.536   230.35
2155.26    0.535   230.00
2156.26    0.534   229.65
2157.26    0.532   229.30
2158.26    0.531   228.95
2159.26    0.530   228.60
2160.26    0.528   228.24
2161.26    0.527   227.89
2162.26    0.525   227.53
2163.26    0.524   227.16
2164.26    0.522   226.80
2165.26    0.520   226.44
2166.26    0.519   226.07
2167.26    0.517   225.70
2168.26    0.515   225.32
2169.26    0.513   224.95
2170.26    0.511   224.57
2171.26    0.510   224.19
2172.26    0.508   223.80
2173.26    0.506   223.42
2174.26    0.503   223.03
2175.26    0.501   222.63
2176.26    0.499   222.23
2177.26    0.497   221.83
2178.26    0.495   221.43
2179.26    0.493   221.02
2180.26    0.490   220.61
2181.26    0.488   220.20
2182.26    0.485   219.78
2183.26    0.483   219.35
2184.26    0.481   218.92
2185.26    0.478   218.49
2186.26    0.475   218.05






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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.


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Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:51:33



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