Double Star Calculator - Orbit

Orbital Elements for HU1216AB
WDS: HU1216AB WDS ID/Discoverer
P: 351.000 Orbital period (years)
a: 1.01 Semi-major axis (arcseconds)
i: 64.4 Inclination (degrees)
Ω: 277.0 Longitude of ascending node (degrees)
T: 1902.000 Epoch of periastron passage (year)
e: 0.508 Eccentricity
ω: 309.0 Longitude of periastron (degrees)
Start-Year: 1849.5 Year
End-Year: 2200.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HU1216AB
Position: 023708.62-111151.1 Epoch-2000 right ascension and declination
WDS-ID: 02371-1112 WDS designation
Discoverer Code: HU1216AB Discover designation and components
ADS number: 1990 Aitken Double Star catalog
HD number: 16355 HD catalog number
Hipparcos number: 12204 Hipparcos catalog number
V1: 8.53 Magnitude of the primary
V2: 9.18 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 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: RAO2015 Reference

Double Star Orbit for HU1216AB



WDS 6th Orbit including measures of HU1216AB

-- 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 HU1216AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.738    44.46
--------------------------
1849.50    0.919   103.58
1850.50    0.906   104.05
1851.50    0.893   104.53
1852.50    0.879   105.03
1853.50    0.865   105.54
1854.50    0.850   106.07
1855.50    0.836   106.62
1856.50    0.821   107.19
1857.50    0.806   107.77
1858.50    0.790   108.39
1859.50    0.774   109.02
1860.50    0.758   109.69
1861.50    0.741   110.38
1862.50    0.724   111.10
1863.50    0.707   111.86
1864.50    0.690   112.66
1865.50    0.672   113.50
1866.50    0.654   114.39
1867.50    0.635   115.33
1868.50    0.616   116.32
1869.50    0.597   117.38
1870.50    0.578   118.51
1871.50    0.558   119.72
1872.50    0.538   121.01
1873.50    0.518   122.41
1874.50    0.498   123.92
1875.50    0.478   125.55
1876.50    0.457   127.33
1877.50    0.437   129.28
1878.50    0.416   131.42
1879.50    0.396   133.78
1880.50    0.376   136.40
1881.50    0.356   139.31
1882.50    0.337   142.55
1883.50    0.319   146.17
1884.50    0.301   150.23
1885.50    0.285   154.78
1886.50    0.270   159.85
1887.50    0.257   165.48
1888.50    0.246   171.64
1889.50    0.238   178.30
1890.50    0.233   185.34
1891.50    0.231   192.60
1892.50    0.232   199.88
1893.50    0.236   206.99
1894.50    0.244   213.76
1895.50    0.254   220.07
1896.50    0.266   225.86
1897.50    0.280   231.11
1898.50    0.295   235.83
1899.50    0.311   240.08
1900.50    0.328   243.89
1901.50    0.346   247.33
1902.50    0.363   250.43
1903.50    0.381   253.24
1904.50    0.398   255.81
1905.50    0.415   258.16
1906.50    0.432   260.33
1907.50    0.448   262.34
1908.50    0.464   264.21
1909.50    0.479   265.96
1910.50    0.493   267.61
1911.50    0.506   269.18
1912.50    0.519   270.66
1913.50    0.530   272.07
1914.50    0.541   273.43
1915.50    0.551   274.73
1916.50    0.561   275.99
1917.50    0.569   277.21
1918.50    0.577   278.40
1919.50    0.584   279.55
1920.50    0.590   280.68
1921.50    0.596   281.79
1922.50    0.601   282.88
1923.50    0.605   283.95
1924.50    0.609   285.00
1925.50    0.612   286.05
1926.50    0.614   287.08
1927.50    0.617   288.11
1928.50    0.618   289.13
1929.50    0.619   290.15
1930.50    0.620   291.17
1931.50    0.620   292.18
1932.50    0.620   293.19
1933.50    0.619   294.21
1934.50    0.618   295.22
1935.50    0.617   296.25
1936.50    0.616   297.27
1937.50    0.614   298.30
1938.50    0.612   299.34
1939.50    0.610   300.38
1940.50    0.607   301.43
1941.50    0.605   302.50
1942.50    0.602   303.57
1943.50    0.599   304.65
1944.50    0.596   305.74
1945.50    0.593   306.84
1946.50    0.589   307.95
1947.50    0.586   309.08
1948.50    0.583   310.22
1949.50    0.579   311.38
1950.50    0.576   312.54
1951.50    0.572   313.72
1952.50    0.569   314.92
1953.50    0.565   316.13
1954.50    0.562   317.36
1955.50    0.559   318.60
1956.50    0.555   319.85
1957.50    0.552   321.12
1958.50    0.549   322.41
1959.50    0.546   323.71
1960.50    0.543   325.02
1961.50    0.540   326.35
1962.50    0.537   327.69
1963.50    0.535   329.05
1964.50    0.532   330.42
1965.50    0.530   331.80
1966.50    0.527   333.19
1967.50    0.525   334.60
1968.50    0.524   336.01
1969.50    0.522   337.44
1970.50    0.520   338.87
1971.50    0.519   340.31
1972.50    0.518   341.76
1973.50    0.517   343.21
1974.50    0.517   344.67
1975.50    0.516   346.13
1976.50    0.516   347.59
1977.50    0.516   349.06
1978.50    0.516   350.52
1979.50    0.517   351.98
1980.50    0.517   353.44
1981.50    0.518   354.89
1982.50    0.519   356.34
1983.50    0.521   357.78
1984.50    0.522   359.21
1985.50    0.524     0.63
1986.50    0.526     2.05
1987.50    0.528     3.45
1988.50    0.531     4.84
1989.50    0.533     6.21
1990.50    0.536     7.57
1991.50    0.539     8.92
1992.50    0.543    10.25
1993.50    0.546    11.57
1994.50    0.550    12.86
1995.50    0.554    14.14
1996.50    0.558    15.40
1997.50    0.562    16.65
1998.50    0.566    17.87
1999.50    0.571    19.07
2000.50    0.576    20.26
2001.50    0.581    21.42
2002.50    0.586    22.57
2003.50    0.591    23.69
2004.50    0.596    24.80
2005.50    0.602    25.88
2006.50    0.607    26.95
2007.50    0.613    28.00
2008.50    0.619    29.02
2009.50    0.625    30.03
2010.50    0.631    31.02
2011.50    0.637    31.99
2012.50    0.643    32.94
2013.50    0.649    33.87
2014.50    0.656    34.79
2015.50    0.662    35.68
2016.50    0.669    36.56
2017.50    0.676    37.42
2018.50    0.682    38.27
2019.50    0.689    39.10
2020.50    0.696    39.91
2021.50    0.703    40.70
2022.50    0.710    41.48
2023.50    0.717    42.25
2024.50    0.724    43.00
2025.50    0.731    43.74
2026.50    0.738    44.46
2027.50    0.745    45.17
2028.50    0.752    45.86
2029.50    0.759    46.54
2030.50    0.767    47.21
2031.50    0.774    47.87
2032.50    0.781    48.51
2033.50    0.788    49.15
2034.50    0.796    49.77
2035.50    0.803    50.38
2036.50    0.810    50.97
2037.50    0.817    51.56
2038.50    0.825    52.14
2039.50    0.832    52.71
2040.50    0.839    53.27
2041.50    0.846    53.81
2042.50    0.854    54.35
2043.50    0.861    54.88
2044.50    0.868    55.40
2045.50    0.875    55.92
2046.50    0.883    56.42
2047.50    0.890    56.92
2048.50    0.897    57.40
2049.50    0.904    57.88
2050.50    0.911    58.36
2051.50    0.918    58.82
2052.50    0.925    59.28
2053.50    0.932    59.73
2054.50    0.939    60.18
2055.50    0.946    60.62
2056.50    0.953    61.05
2057.50    0.960    61.47
2058.50    0.967    61.89
2059.50    0.973    62.31
2060.50    0.980    62.72
2061.50    0.987    63.12
2062.50    0.993    63.52
2063.50    1.000    63.91
2064.50    1.006    64.29
2065.50    1.013    64.68
2066.50    1.019    65.05
2067.50    1.026    65.43
2068.50    1.032    65.79
2069.50    1.038    66.16
2070.50    1.045    66.52
2071.50    1.051    66.87
2072.50    1.057    67.22
2073.50    1.063    67.57
2074.50    1.069    67.91
2075.50    1.075    68.25
2076.50    1.081    68.58
2077.50    1.086    68.92
2078.50    1.092    69.24
2079.50    1.098    69.57
2080.50    1.103    69.89
2081.50    1.109    70.21
2082.50    1.114    70.52
2083.50    1.120    70.84
2084.50    1.125    71.15
2085.50    1.130    71.45
2086.50    1.135    71.75
2087.50    1.141    72.06
2088.50    1.146    72.35
2089.50    1.150    72.65
2090.50    1.155    72.94
2091.50    1.160    73.23
2092.50    1.165    73.52
2093.50    1.169    73.81
2094.50    1.174    74.09
2095.50    1.178    74.37
2096.50    1.183    74.65
2097.50    1.187    74.93
2098.50    1.191    75.20
2099.50    1.195    75.48
2100.50    1.199    75.75
2101.50    1.203    76.02
2102.50    1.207    76.29
2103.50    1.211    76.55
2104.50    1.215    76.82
2105.50    1.218    77.08
2106.50    1.222    77.34
2107.50    1.225    77.60
2108.50    1.228    77.86
2109.50    1.231    78.12
2110.50    1.234    78.38
2111.50    1.237    78.63
2112.50    1.240    78.88
2113.50    1.243    79.14
2114.50    1.246    79.39
2115.50    1.248    79.64
2116.50    1.251    79.89
2117.50    1.253    80.14
2118.50    1.255    80.38
2119.50    1.257    80.63
2120.50    1.259    80.88
2121.50    1.261    81.12
2122.50    1.263    81.37
2123.50    1.265    81.61
2124.50    1.266    81.85
2125.50    1.268    82.10
2126.50    1.269    82.34
2127.50    1.270    82.58
2128.50    1.271    82.82
2129.50    1.272    83.06
2130.50    1.273    83.30
2131.50    1.274    83.54
2132.50    1.275    83.78
2133.50    1.275    84.02
2134.50    1.275    84.26
2135.50    1.276    84.50
2136.50    1.276    84.74
2137.50    1.276    84.98
2138.50    1.275    85.22
2139.50    1.275    85.46
2140.50    1.275    85.70
2141.50    1.274    85.94
2142.50    1.273    86.18
2143.50    1.272    86.42
2144.50    1.271    86.66
2145.50    1.270    86.90
2146.50    1.269    87.14
2147.50    1.268    87.38
2148.50    1.266    87.62
2149.50    1.264    87.87
2150.50    1.262    88.11
2151.50    1.260    88.36
2152.50    1.258    88.60
2153.50    1.256    88.85
2154.50    1.253    89.10
2155.50    1.250    89.34
2156.50    1.247    89.59
2157.50    1.244    89.85
2158.50    1.241    90.10
2159.50    1.238    90.35
2160.50    1.234    90.61
2161.50    1.230    90.86
2162.50    1.226    91.12
2163.50    1.222    91.38
2164.50    1.218    91.64
2165.50    1.214    91.90
2166.50    1.209    92.17
2167.50    1.204    92.44
2168.50    1.199    92.71
2169.50    1.194    92.98
2170.50    1.188    93.25
2171.50    1.183    93.53
2172.50    1.177    93.81
2173.50    1.171    94.09
2174.50    1.165    94.38
2175.50    1.158    94.67
2176.50    1.152    94.96
2177.50    1.145    95.25
2178.50    1.138    95.55
2179.50    1.130    95.86
2180.50    1.123    96.16
2181.50    1.115    96.47
2182.50    1.107    96.79
2183.50    1.099    97.11
2184.50    1.090    97.44
2185.50    1.081    97.77
2186.50    1.072    98.10
2187.50    1.063    98.44
2188.50    1.054    98.79
2189.50    1.044    99.14
2190.50    1.034    99.50
2191.50    1.024    99.87
2192.50    1.013   100.25
2193.50    1.002   100.63
2194.50    0.991   101.02
2195.50    0.980   101.42
2196.50    0.968   101.83
2197.50    0.957   102.25
2198.50    0.944   102.69
2199.50    0.932   103.13






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 15:02:00



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