Double Star Calculator - Orbit

Orbital Elements for STF1216
WDS: STF1216 WDS ID/Discoverer
P: 402.000 Orbital period (years)
a: 0.565 Semi-major axis (arcseconds)
i: 31.7 Inclination (degrees)
Ω: 264.1 Longitude of ascending node (degrees)
T: 2322.000 Epoch of periastron passage (year)
e: 0.109 Eccentricity
ω: 310.8 Longitude of periastron (degrees)
Start-Year: 1824.0 Year
End-Year: 2226.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1216
Position: 082120.28-013607.3 Epoch-2000 right ascension and declination
WDS-ID: 08213-0136 WDS designation
Discoverer Code: STF1216 Discover designation and components
ADS number: 6762 Aitken Double Star catalog
HD number: 70340 HD catalog number
Hipparcos number: 40941 Hipparcos catalog number
V1: 6.85 Magnitude of the primary
V2: 7.88 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2014a Reference

Double Star Orbit for STF1216



WDS 6th Orbit including measures of STF1216

-- 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 STF1216
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.516   318.19
--------------------------
1824.00    0.544   112.42
1825.00    0.542   113.24
1826.00    0.540   114.06
1827.00    0.538   114.89
1828.00    0.536   115.73
1829.00    0.534   116.58
1830.00    0.532   117.43
1831.00    0.530   118.29
1832.00    0.527   119.15
1833.00    0.525   120.02
1834.00    0.523   120.90
1835.00    0.521   121.79
1836.00    0.519   122.69
1837.00    0.516   123.59
1838.00    0.514   124.50
1839.00    0.512   125.42
1840.00    0.510   126.35
1841.00    0.508   127.28
1842.00    0.505   128.22
1843.00    0.503   129.17
1844.00    0.501   130.13
1845.00    0.499   131.10
1846.00    0.496   132.08
1847.00    0.494   133.06
1848.00    0.492   134.06
1849.00    0.490   135.06
1850.00    0.488   136.07
1851.00    0.486   137.09
1852.00    0.484   138.12
1853.00    0.481   139.16
1854.00    0.479   140.21
1855.00    0.477   141.27
1856.00    0.475   142.33
1857.00    0.473   143.41
1858.00    0.471   144.49
1859.00    0.470   145.58
1860.00    0.468   146.68
1861.00    0.466   147.79
1862.00    0.464   148.91
1863.00    0.462   150.04
1864.00    0.461   151.17
1865.00    0.459   152.32
1866.00    0.457   153.47
1867.00    0.456   154.63
1868.00    0.454   155.80
1869.00    0.453   156.97
1870.00    0.451   158.15
1871.00    0.450   159.34
1872.00    0.449   160.54
1873.00    0.448   161.74
1874.00    0.446   162.95
1875.00    0.445   164.17
1876.00    0.444   165.39
1877.00    0.443   166.62
1878.00    0.442   167.85
1879.00    0.442   169.09
1880.00    0.441   170.33
1881.00    0.440   171.58
1882.00    0.439   172.83
1883.00    0.439   174.09
1884.00    0.438   175.34
1885.00    0.438   176.60
1886.00    0.437   177.86
1887.00    0.437   179.13
1888.00    0.437   180.39
1889.00    0.437   181.66
1890.00    0.437   182.93
1891.00    0.437   184.20
1892.00    0.437   185.46
1893.00    0.437   186.73
1894.00    0.437   188.00
1895.00    0.437   189.26
1896.00    0.438   190.52
1897.00    0.438   191.78
1898.00    0.439   193.04
1899.00    0.439   194.30
1900.00    0.440   195.55
1901.00    0.440   196.80
1902.00    0.441   198.04
1903.00    0.442   199.29
1904.00    0.443   200.52
1905.00    0.444   201.75
1906.00    0.444   202.98
1907.00    0.445   204.20
1908.00    0.446   205.42
1909.00    0.448   206.63
1910.00    0.449   207.83
1911.00    0.450   209.03
1912.00    0.451   210.22
1913.00    0.452   211.41
1914.00    0.454   212.59
1915.00    0.455   213.76
1916.00    0.456   214.92
1917.00    0.458   216.08
1918.00    0.459   217.23
1919.00    0.460   218.38
1920.00    0.462   219.51
1921.00    0.463   220.64
1922.00    0.465   221.77
1923.00    0.466   222.88
1924.00    0.468   223.99
1925.00    0.469   225.09
1926.00    0.471   226.18
1927.00    0.473   227.27
1928.00    0.474   228.35
1929.00    0.476   229.42
1930.00    0.477   230.49
1931.00    0.479   231.54
1932.00    0.480   232.60
1933.00    0.482   233.64
1934.00    0.483   234.68
1935.00    0.485   235.71
1936.00    0.487   236.73
1937.00    0.488   237.75
1938.00    0.490   238.76
1939.00    0.491   239.77
1940.00    0.493   240.77
1941.00    0.494   241.76
1942.00    0.496   242.75
1943.00    0.497   243.73
1944.00    0.498   244.71
1945.00    0.500   245.68
1946.00    0.501   246.64
1947.00    0.502   247.60
1948.00    0.504   248.56
1949.00    0.505   249.51
1950.00    0.506   250.45
1951.00    0.508   251.39
1952.00    0.509   252.33
1953.00    0.510   253.26
1954.00    0.511   254.19
1955.00    0.512   255.11
1956.00    0.513   256.03
1957.00    0.514   256.95
1958.00    0.515   257.86
1959.00    0.516   258.77
1960.00    0.517   259.68
1961.00    0.518   260.58
1962.00    0.519   261.48
1963.00    0.520   262.38
1964.00    0.520   263.27
1965.00    0.521   264.16
1966.00    0.522   265.05
1967.00    0.523   265.94
1968.00    0.523   266.82
1969.00    0.524   267.70
1970.00    0.524   268.58
1971.00    0.525   269.46
1972.00    0.525   270.34
1973.00    0.526   271.21
1974.00    0.526   272.09
1975.00    0.527   272.96
1976.00    0.527   273.83
1977.00    0.527   274.70
1978.00    0.528   275.57
1979.00    0.528   276.44
1980.00    0.528   277.30
1981.00    0.528   278.17
1982.00    0.528   279.03
1983.00    0.529   279.90
1984.00    0.529   280.77
1985.00    0.529   281.63
1986.00    0.529   282.49
1987.00    0.529   283.36
1988.00    0.529   284.22
1989.00    0.529   285.09
1990.00    0.529   285.95
1991.00    0.529   286.82
1992.00    0.528   287.69
1993.00    0.528   288.55
1994.00    0.528   289.42
1995.00    0.528   290.29
1996.00    0.528   291.15
1997.00    0.527   292.02
1998.00    0.527   292.89
1999.00    0.527   293.76
2000.00    0.527   294.63
2001.00    0.526   295.51
2002.00    0.526   296.38
2003.00    0.526   297.25
2004.00    0.525   298.13
2005.00    0.525   299.01
2006.00    0.525   299.88
2007.00    0.524   300.76
2008.00    0.524   301.64
2009.00    0.523   302.53
2010.00    0.523   303.41
2011.00    0.523   304.29
2012.00    0.522   305.18
2013.00    0.522   306.07
2014.00    0.521   306.96
2015.00    0.521   307.85
2016.00    0.520   308.74
2017.00    0.520   309.63
2018.00    0.520   310.53
2019.00    0.519   311.42
2020.00    0.519   312.32
2021.00    0.518   313.22
2022.00    0.518   314.12
2023.00    0.518   315.02
2024.00    0.517   315.92
2025.00    0.517   316.83
2026.00    0.516   317.73
2027.00    0.516   318.64
2028.00    0.516   319.55
2029.00    0.515   320.46
2030.00    0.515   321.37
2031.00    0.515   322.28
2032.00    0.515   323.19
2033.00    0.514   324.11
2034.00    0.514   325.02
2035.00    0.514   325.94
2036.00    0.514   326.85
2037.00    0.513   327.77
2038.00    0.513   328.69
2039.00    0.513   329.61
2040.00    0.513   330.53
2041.00    0.513   331.45
2042.00    0.513   332.37
2043.00    0.513   333.29
2044.00    0.512   334.21
2045.00    0.512   335.13
2046.00    0.512   336.05
2047.00    0.512   336.97
2048.00    0.512   337.89
2049.00    0.513   338.81
2050.00    0.513   339.73
2051.00    0.513   340.65
2052.00    0.513   341.57
2053.00    0.513   342.49
2054.00    0.513   343.41
2055.00    0.514   344.33
2056.00    0.514   345.24
2057.00    0.514   346.16
2058.00    0.514   347.07
2059.00    0.515   347.98
2060.00    0.515   348.90
2061.00    0.515   349.81
2062.00    0.516   350.72
2063.00    0.516   351.62
2064.00    0.517   352.53
2065.00    0.517   353.43
2066.00    0.518   354.34
2067.00    0.518   355.24
2068.00    0.519   356.14
2069.00    0.520   357.03
2070.00    0.520   357.93
2071.00    0.521   358.82
2072.00    0.522   359.71
2073.00    0.522     0.60
2074.00    0.523     1.48
2075.00    0.524     2.36
2076.00    0.525     3.24
2077.00    0.525     4.12
2078.00    0.526     4.99
2079.00    0.527     5.87
2080.00    0.528     6.74
2081.00    0.529     7.60
2082.00    0.530     8.46
2083.00    0.531     9.32
2084.00    0.532    10.18
2085.00    0.533    11.03
2086.00    0.534    11.88
2087.00    0.535    12.73
2088.00    0.536    13.57
2089.00    0.537    14.42
2090.00    0.538    15.25
2091.00    0.539    16.09
2092.00    0.540    16.92
2093.00    0.541    17.74
2094.00    0.542    18.57
2095.00    0.543    19.39
2096.00    0.545    20.21
2097.00    0.546    21.02
2098.00    0.547    21.83
2099.00    0.548    22.63
2100.00    0.549    23.44
2101.00    0.551    24.24
2102.00    0.552    25.03
2103.00    0.553    25.83
2104.00    0.554    26.61
2105.00    0.555    27.40
2106.00    0.557    28.18
2107.00    0.558    28.96
2108.00    0.559    29.74
2109.00    0.560    30.51
2110.00    0.562    31.28
2111.00    0.563    32.04
2112.00    0.564    32.80
2113.00    0.565    33.56
2114.00    0.566    34.32
2115.00    0.568    35.07
2116.00    0.569    35.82
2117.00    0.570    36.56
2118.00    0.571    37.30
2119.00    0.573    38.04
2120.00    0.574    38.78
2121.00    0.575    39.51
2122.00    0.576    40.24
2123.00    0.577    40.97
2124.00    0.578    41.69
2125.00    0.580    42.42
2126.00    0.581    43.13
2127.00    0.582    43.85
2128.00    0.583    44.56
2129.00    0.584    45.27
2130.00    0.585    45.98
2131.00    0.586    46.69
2132.00    0.587    47.39
2133.00    0.588    48.09
2134.00    0.589    48.79
2135.00    0.590    49.48
2136.00    0.591    50.18
2137.00    0.592    50.87
2138.00    0.593    51.56
2139.00    0.594    52.24
2140.00    0.595    52.93
2141.00    0.596    53.61
2142.00    0.596    54.29
2143.00    0.597    54.97
2144.00    0.598    55.65
2145.00    0.599    56.32
2146.00    0.600    56.99
2147.00    0.600    57.67
2148.00    0.601    58.34
2149.00    0.602    59.01
2150.00    0.602    59.67
2151.00    0.603    60.34
2152.00    0.603    61.00
2153.00    0.604    61.67
2154.00    0.604    62.33
2155.00    0.605    62.99
2156.00    0.605    63.65
2157.00    0.606    64.31
2158.00    0.606    64.97
2159.00    0.606    65.63
2160.00    0.607    66.29
2161.00    0.607    66.94
2162.00    0.607    67.60
2163.00    0.607    68.25
2164.00    0.608    68.91
2165.00    0.608    69.56
2166.00    0.608    70.22
2167.00    0.608    70.87
2168.00    0.608    71.53
2169.00    0.608    72.18
2170.00    0.608    72.83
2171.00    0.608    73.49
2172.00    0.608    74.14
2173.00    0.607    74.80
2174.00    0.607    75.45
2175.00    0.607    76.11
2176.00    0.607    76.77
2177.00    0.606    77.42
2178.00    0.606    78.08
2179.00    0.606    78.74
2180.00    0.605    79.40
2181.00    0.605    80.06
2182.00    0.604    80.72
2183.00    0.604    81.38
2184.00    0.603    82.05
2185.00    0.603    82.71
2186.00    0.602    83.38
2187.00    0.601    84.05
2188.00    0.600    84.72
2189.00    0.600    85.39
2190.00    0.599    86.06
2191.00    0.598    86.74
2192.00    0.597    87.42
2193.00    0.596    88.09
2194.00    0.595    88.78
2195.00    0.594    89.46
2196.00    0.593    90.15
2197.00    0.592    90.84
2198.00    0.591    91.53
2199.00    0.590    92.22
2200.00    0.588    92.92
2201.00    0.587    93.62
2202.00    0.586    94.32
2203.00    0.584    95.03
2204.00    0.583    95.74
2205.00    0.582    96.45
2206.00    0.580    97.17
2207.00    0.579    97.89
2208.00    0.577    98.61
2209.00    0.576    99.34
2210.00    0.574   100.07
2211.00    0.572   100.81
2212.00    0.571   101.55
2213.00    0.569   102.29
2214.00    0.567   103.04
2215.00    0.566   103.79
2216.00    0.564   104.55
2217.00    0.562   105.31
2218.00    0.560   106.08
2219.00    0.558   106.85
2220.00    0.556   107.63
2221.00    0.554   108.42
2222.00    0.553   109.21
2223.00    0.551   110.00
2224.00    0.549   110.80
2225.00    0.547   111.61






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 16:06:35



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