Double Star Calculator - Orbit

Orbital Elements for HU27
WDS: HU27 WDS ID/Discoverer
P: 276.000 Orbital period (years)
a: 0.809 Semi-major axis (arcseconds)
i: 77.7 Inclination (degrees)
Ω: 184.1 Longitude of ascending node (degrees)
T: 2083.000 Epoch of periastron passage (year)
e: 0.673 Eccentricity
ω: 261.6 Longitude of periastron (degrees)
Start-Year: 1887.0 Year
End-Year: 2163.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU27
Position: 035900.32+094654.0 Epoch-2000 right ascension and declination
WDS-ID: 03590+0947 WDS designation
Discoverer Code: HU27 Discover designation and components
ADS number: 2911 Aitken Double Star catalog
HD number: 25034 HD catalog number
Hipparcos number: 18618 Hipparcos catalog number
V1: 8.96 Magnitude of the primary
V2: 9.05 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: n Flags
Ephemerides: Ephemerides
Code: Hrt2010a Reference

Double Star Orbit for HU27



WDS 6th Orbit including measures of HU27

-- 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 HU27
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.476   340.54
--------------------------
1887.00    0.633   204.12
1888.00    0.629   204.45
1889.00    0.625   204.79
1890.00    0.621   205.14
1891.00    0.617   205.49
1892.00    0.613   205.85
1893.00    0.608   206.21
1894.00    0.604   206.58
1895.00    0.599   206.95
1896.00    0.595   207.32
1897.00    0.590   207.71
1898.00    0.586   208.10
1899.00    0.581   208.49
1900.00    0.576   208.89
1901.00    0.572   209.30
1902.00    0.567   209.72
1903.00    0.562   210.14
1904.00    0.557   210.57
1905.00    0.552   211.01
1906.00    0.547   211.45
1907.00    0.542   211.91
1908.00    0.537   212.37
1909.00    0.532   212.84
1910.00    0.526   213.32
1911.00    0.521   213.81
1912.00    0.516   214.31
1913.00    0.511   214.82
1914.00    0.506   215.34
1915.00    0.500   215.87
1916.00    0.495   216.42
1917.00    0.490   216.97
1918.00    0.484   217.54
1919.00    0.479   218.12
1920.00    0.474   218.71
1921.00    0.468   219.32
1922.00    0.463   219.94
1923.00    0.458   220.57
1924.00    0.452   221.22
1925.00    0.447   221.89
1926.00    0.442   222.57
1927.00    0.436   223.27
1928.00    0.431   223.98
1929.00    0.426   224.72
1930.00    0.420   225.47
1931.00    0.415   226.24
1932.00    0.410   227.03
1933.00    0.405   227.84
1934.00    0.400   228.67
1935.00    0.395   229.52
1936.00    0.390   230.40
1937.00    0.385   231.29
1938.00    0.380   232.21
1939.00    0.375   233.16
1940.00    0.370   234.13
1941.00    0.365   235.12
1942.00    0.361   236.15
1943.00    0.356   237.19
1944.00    0.351   238.27
1945.00    0.347   239.37
1946.00    0.343   240.50
1947.00    0.338   241.66
1948.00    0.334   242.85
1949.00    0.330   244.07
1950.00    0.326   245.32
1951.00    0.323   246.59
1952.00    0.319   247.90
1953.00    0.315   249.24
1954.00    0.312   250.60
1955.00    0.309   252.00
1956.00    0.306   253.42
1957.00    0.303   254.87
1958.00    0.300   256.35
1959.00    0.298   257.86
1960.00    0.295   259.39
1961.00    0.293   260.95
1962.00    0.291   262.53
1963.00    0.289   264.13
1964.00    0.287   265.75
1965.00    0.286   267.39
1966.00    0.285   269.04
1967.00    0.284   270.71
1968.00    0.283   272.38
1969.00    0.282   274.07
1970.00    0.282   275.76
1971.00    0.281   277.46
1972.00    0.281   279.16
1973.00    0.282   280.85
1974.00    0.282   282.55
1975.00    0.283   284.23
1976.00    0.284   285.91
1977.00    0.285   287.57
1978.00    0.286   289.23
1979.00    0.287   290.86
1980.00    0.289   292.48
1981.00    0.291   294.08
1982.00    0.293   295.66
1983.00    0.295   297.22
1984.00    0.298   298.75
1985.00    0.300   300.25
1986.00    0.303   301.73
1987.00    0.306   303.19
1988.00    0.309   304.61
1989.00    0.312   306.01
1990.00    0.315   307.38
1991.00    0.319   308.71
1992.00    0.322   310.02
1993.00    0.326   311.30
1994.00    0.330   312.55
1995.00    0.334   313.78
1996.00    0.338   314.97
1997.00    0.342   316.14
1998.00    0.346   317.27
1999.00    0.350   318.38
2000.00    0.355   319.47
2001.00    0.359   320.52
2002.00    0.363   321.55
2003.00    0.368   322.56
2004.00    0.373   323.54
2005.00    0.377   324.50
2006.00    0.382   325.43
2007.00    0.386   326.34
2008.00    0.391   327.23
2009.00    0.396   328.10
2010.00    0.401   328.95
2011.00    0.405   329.78
2012.00    0.410   330.59
2013.00    0.415   331.38
2014.00    0.420   332.15
2015.00    0.424   332.90
2016.00    0.429   333.64
2017.00    0.434   334.37
2018.00    0.439   335.07
2019.00    0.443   335.76
2020.00    0.448   336.44
2021.00    0.452   337.11
2022.00    0.457   337.76
2023.00    0.461   338.40
2024.00    0.466   339.02
2025.00    0.470   339.64
2026.00    0.474   340.24
2027.00    0.478   340.83
2028.00    0.482   341.42
2029.00    0.486   341.99
2030.00    0.490   342.55
2031.00    0.494   343.11
2032.00    0.498   343.66
2033.00    0.501   344.19
2034.00    0.505   344.73
2035.00    0.508   345.25
2036.00    0.511   345.77
2037.00    0.514   346.28
2038.00    0.517   346.78
2039.00    0.520   347.28
2040.00    0.522   347.78
2041.00    0.525   348.27
2042.00    0.527   348.76
2043.00    0.529   349.24
2044.00    0.530   349.72
2045.00    0.532   350.20
2046.00    0.533   350.67
2047.00    0.534   351.15
2048.00    0.534   351.62
2049.00    0.534   352.09
2050.00    0.534   352.56
2051.00    0.534   353.03
2052.00    0.533   353.50
2053.00    0.532   353.98
2054.00    0.530   354.46
2055.00    0.528   354.94
2056.00    0.526   355.42
2057.00    0.523   355.91
2058.00    0.519   356.40
2059.00    0.515   356.91
2060.00    0.510   357.42
2061.00    0.505   357.94
2062.00    0.498   358.48
2063.00    0.491   359.02
2064.00    0.484   359.59
2065.00    0.475     0.18
2066.00    0.465     0.79
2067.00    0.454     1.42
2068.00    0.442     2.09
2069.00    0.428     2.80
2070.00    0.414     3.56
2071.00    0.397     4.38
2072.00    0.379     5.27
2073.00    0.360     6.26
2074.00    0.338     7.36
2075.00    0.314     8.63
2076.00    0.288    10.11
2077.00    0.260    11.90
2078.00    0.230    14.13
2079.00    0.198    17.08
2080.00    0.164    21.20
2081.00    0.130    27.50
2082.00    0.096    38.32
2083.00    0.068    59.37
2084.00    0.057    96.88
2085.00    0.072   131.98
2086.00    0.102   150.70
2087.00    0.136   160.46
2088.00    0.171   166.25
2089.00    0.205   170.08
2090.00    0.238   172.83
2091.00    0.270   174.92
2092.00    0.300   176.58
2093.00    0.328   177.95
2094.00    0.354   179.11
2095.00    0.379   180.11
2096.00    0.402   181.00
2097.00    0.424   181.79
2098.00    0.444   182.50
2099.00    0.463   183.16
2100.00    0.481   183.76
2101.00    0.497   184.32
2102.00    0.513   184.85
2103.00    0.528   185.35
2104.00    0.541   185.82
2105.00    0.554   186.27
2106.00    0.566   186.69
2107.00    0.577   187.11
2108.00    0.588   187.50
2109.00    0.598   187.88
2110.00    0.607   188.25
2111.00    0.615   188.61
2112.00    0.623   188.97
2113.00    0.631   189.31
2114.00    0.638   189.64
2115.00    0.644   189.97
2116.00    0.650   190.29
2117.00    0.656   190.61
2118.00    0.661   190.92
2119.00    0.665   191.22
2120.00    0.669   191.52
2121.00    0.673   191.82
2122.00    0.677   192.12
2123.00    0.680   192.41
2124.00    0.683   192.70
2125.00    0.686   192.99
2126.00    0.688   193.27
2127.00    0.690   193.56
2128.00    0.691   193.84
2129.00    0.693   194.12
2130.00    0.694   194.40
2131.00    0.695   194.68
2132.00    0.696   194.96
2133.00    0.696   195.23
2134.00    0.696   195.51
2135.00    0.696   195.79
2136.00    0.696   196.07
2137.00    0.696   196.34
2138.00    0.695   196.62
2139.00    0.694   196.90
2140.00    0.693   197.18
2141.00    0.692   197.46
2142.00    0.691   197.74
2143.00    0.690   198.02
2144.00    0.688   198.31
2145.00    0.686   198.59
2146.00    0.684   198.88
2147.00    0.682   199.17
2148.00    0.680   199.46
2149.00    0.678   199.75
2150.00    0.675   200.04
2151.00    0.673   200.34
2152.00    0.670   200.64
2153.00    0.667   200.94
2154.00    0.664   201.24
2155.00    0.661   201.55
2156.00    0.658   201.86
2157.00    0.655   202.17
2158.00    0.651   202.48
2159.00    0.648   202.80
2160.00    0.644   203.13
2161.00    0.641   203.45
2162.00    0.637   203.78






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 15:16:39



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