Double Star Calculator - Orbit

Orbital Elements for STF677AB
WDS: STF677AB WDS ID/Discoverer
P: 430.171 Orbital period (years)
a: 1.50774 Semi-major axis (arcseconds)
i: 134.926 Inclination (degrees)
Ω: 96.475 Longitude of ascending node (degrees)
T: 2020.842 Epoch of periastron passage (year)
e: 0.22702 Eccentricity
ω: 343.967 Longitude of periastron (degrees)
Start-Year: 1809.91465 Year
End-Year: 2240.08535 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF677AB
Position: 052444.29+632311.1 Epoch-2000 right ascension and declination
WDS-ID: 05247+6323 WDS designation
Discoverer Code: STF677AB Discover designation and components
ADS number: 3956 Aitken Double Star catalog
HD number: 34839 HD catalog number
Hipparcos number: 25300 Hipparcos catalog number
V1: 7.86 Magnitude of the primary
V2: 8.50 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STF677AB



WDS 6th Orbit including measures of STF677AB

-- 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 STF677AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.161   102.37
--------------------------
1809.91    1.823   286.30
1810.91    1.825   285.91
1811.91    1.827   285.52
1812.91    1.828   285.12
1813.91    1.830   284.73
1814.91    1.831   284.34
1815.91    1.832   283.95
1816.91    1.833   283.56
1817.91    1.834   283.17
1818.91    1.835   282.79
1819.91    1.835   282.40
1820.91    1.836   282.01
1821.91    1.836   281.62
1822.91    1.837   281.23
1823.91    1.837   280.84
1824.91    1.837   280.46
1825.91    1.837   280.07
1826.91    1.836   279.68
1827.91    1.836   279.29
1828.91    1.835   278.90
1829.91    1.835   278.52
1830.91    1.834   278.13
1831.91    1.833   277.74
1832.91    1.832   277.35
1833.91    1.831   276.96
1834.91    1.829   276.57
1835.91    1.828   276.18
1836.91    1.826   275.78
1837.91    1.825   275.39
1838.91    1.823   275.00
1839.91    1.821   274.60
1840.91    1.819   274.21
1841.91    1.816   273.81
1842.91    1.814   273.42
1843.91    1.812   273.02
1844.91    1.809   272.62
1845.91    1.806   272.22
1846.91    1.803   271.82
1847.91    1.800   271.41
1848.91    1.797   271.01
1849.91    1.794   270.60
1850.91    1.790   270.20
1851.91    1.787   269.79
1852.91    1.783   269.38
1853.91    1.779   268.96
1854.91    1.775   268.55
1855.91    1.771   268.13
1856.91    1.767   267.71
1857.91    1.762   267.29
1858.91    1.758   266.87
1859.91    1.753   266.45
1860.91    1.748   266.02
1861.91    1.743   265.59
1862.91    1.738   265.16
1863.91    1.733   264.72
1864.91    1.728   264.29
1865.91    1.722   263.85
1866.91    1.717   263.41
1867.91    1.711   262.96
1868.91    1.705   262.51
1869.91    1.699   262.06
1870.91    1.693   261.61
1871.91    1.687   261.15
1872.91    1.681   260.69
1873.91    1.675   260.22
1874.91    1.668   259.75
1875.91    1.661   259.28
1876.91    1.654   258.80
1877.91    1.648   258.32
1878.91    1.641   257.84
1879.91    1.633   257.35
1880.91    1.626   256.86
1881.91    1.619   256.36
1882.91    1.611   255.86
1883.91    1.604   255.35
1884.91    1.596   254.84
1885.91    1.588   254.33
1886.91    1.580   253.81
1887.91    1.572   253.28
1888.91    1.564   252.75
1889.91    1.556   252.21
1890.91    1.548   251.67
1891.91    1.539   251.12
1892.91    1.531   250.56
1893.91    1.522   250.00
1894.91    1.513   249.43
1895.91    1.504   248.86
1896.91    1.496   248.28
1897.91    1.487   247.69
1898.91    1.477   247.09
1899.91    1.468   246.49
1900.91    1.459   245.88
1901.91    1.450   245.26
1902.91    1.440   244.63
1903.91    1.431   244.00
1904.91    1.422   243.35
1905.91    1.412   242.70
1906.91    1.402   242.04
1907.91    1.393   241.37
1908.91    1.383   240.69
1909.91    1.373   240.00
1910.91    1.363   239.30
1911.91    1.353   238.60
1912.91    1.344   237.88
1913.91    1.334   237.15
1914.91    1.324   236.40
1915.91    1.314   235.65
1916.91    1.304   234.89
1917.91    1.294   234.11
1918.91    1.284   233.32
1919.91    1.274   232.52
1920.91    1.264   231.71
1921.91    1.254   230.88
1922.91    1.244   230.05
1923.91    1.234   229.19
1924.91    1.224   228.33
1925.91    1.214   227.44
1926.91    1.204   226.55
1927.91    1.194   225.64
1928.91    1.184   224.71
1929.91    1.175   223.77
1930.91    1.165   222.82
1931.91    1.155   221.84
1932.91    1.146   220.86
1933.91    1.136   219.85
1934.91    1.127   218.83
1935.91    1.118   217.79
1936.91    1.109   216.74
1937.91    1.100   215.66
1938.91    1.091   214.57
1939.91    1.083   213.47
1940.91    1.074   212.34
1941.91    1.066   211.20
1942.91    1.057   210.04
1943.91    1.049   208.86
1944.91    1.042   207.66
1945.91    1.034   206.45
1946.91    1.027   205.21
1947.91    1.019   203.96
1948.91    1.012   202.70
1949.91    1.006   201.41
1950.91    0.999   200.11
1951.91    0.993   198.79
1952.91    0.987   197.45
1953.91    0.981   196.10
1954.91    0.976   194.74
1955.91    0.971   193.36
1956.91    0.966   191.96
1957.91    0.962   190.55
1958.91    0.957   189.13
1959.91    0.953   187.70
1960.91    0.950   186.25
1961.91    0.946   184.80
1962.91    0.944   183.33
1963.91    0.941   181.86
1964.91    0.939   180.38
1965.91    0.937   178.89
1966.91    0.935   177.39
1967.91    0.934   175.90
1968.91    0.933   174.39
1969.91    0.932   172.89
1970.91    0.932   171.38
1971.91    0.932   169.88
1972.91    0.933   168.37
1973.91    0.933   166.87
1974.91    0.934   165.37
1975.91    0.936   163.87
1976.91    0.937   162.38
1977.91    0.939   160.89
1978.91    0.941   159.41
1979.91    0.944   157.94
1980.91    0.947   156.48
1981.91    0.950   155.02
1982.91    0.953   153.58
1983.91    0.957   152.14
1984.91    0.961   150.72
1985.91    0.965   149.31
1986.91    0.969   147.91
1987.91    0.973   146.52
1988.91    0.978   145.14
1989.91    0.983   143.78
1990.91    0.987   142.43
1991.91    0.993   141.10
1992.91    0.998   139.78
1993.91    1.003   138.47
1994.91    1.008   137.18
1995.91    1.014   135.90
1996.91    1.019   134.63
1997.91    1.025   133.38
1998.91    1.031   132.14
1999.91    1.036   130.92
2000.91    1.042   129.70
2001.91    1.048   128.51
2002.91    1.054   127.32
2003.91    1.059   126.15
2004.91    1.065   124.99
2005.91    1.071   123.84
2006.91    1.076   122.71
2007.91    1.082   121.58
2008.91    1.087   120.47
2009.91    1.093   119.37
2010.91    1.098   118.28
2011.91    1.103   117.20
2012.91    1.108   116.13
2013.91    1.113   115.06
2014.91    1.118   114.01
2015.91    1.122   112.97
2016.91    1.127   111.94
2017.91    1.131   110.91
2018.91    1.135   109.89
2019.91    1.139   108.88
2020.91    1.143   107.87
2021.91    1.147   106.88
2022.91    1.150   105.88
2023.91    1.154   104.90
2024.91    1.157   103.92
2025.91    1.160   102.94
2026.91    1.162   101.97
2027.91    1.165   101.01
2028.91    1.167   100.04
2029.91    1.169    99.08
2030.91    1.171    98.13
2031.91    1.173    97.18
2032.91    1.174    96.23
2033.91    1.176    95.28
2034.91    1.177    94.33
2035.91    1.177    93.39
2036.91    1.178    92.45
2037.91    1.178    91.50
2038.91    1.179    90.56
2039.91    1.179    89.62
2040.91    1.179    88.68
2041.91    1.178    87.74
2042.91    1.178    86.79
2043.91    1.177    85.85
2044.91    1.176    84.90
2045.91    1.175    83.96
2046.91    1.174    83.01
2047.91    1.172    82.06
2048.91    1.171    81.10
2049.91    1.169    80.15
2050.91    1.167    79.19
2051.91    1.165    78.23
2052.91    1.163    77.26
2053.91    1.160    76.29
2054.91    1.158    75.32
2055.91    1.155    74.34
2056.91    1.153    73.36
2057.91    1.150    72.37
2058.91    1.147    71.38
2059.91    1.144    70.38
2060.91    1.141    69.38
2061.91    1.138    68.37
2062.91    1.135    67.36
2063.91    1.132    66.34
2064.91    1.128    65.31
2065.91    1.125    64.28
2066.91    1.122    63.25
2067.91    1.118    62.20
2068.91    1.115    61.16
2069.91    1.112    60.10
2070.91    1.108    59.04
2071.91    1.105    57.97
2072.91    1.102    56.89
2073.91    1.098    55.81
2074.91    1.095    54.72
2075.91    1.092    53.63
2076.91    1.089    52.53
2077.91    1.085    51.42
2078.91    1.082    50.31
2079.91    1.079    49.19
2080.91    1.077    48.06
2081.91    1.074    46.93
2082.91    1.071    45.79
2083.91    1.069    44.65
2084.91    1.066    43.50
2085.91    1.064    42.35
2086.91    1.062    41.19
2087.91    1.059    40.02
2088.91    1.058    38.86
2089.91    1.056    37.68
2090.91    1.054    36.51
2091.91    1.053    35.33
2092.91    1.051    34.15
2093.91    1.050    32.96
2094.91    1.049    31.78
2095.91    1.049    30.59
2096.91    1.048    29.40
2097.91    1.048    28.21
2098.91    1.048    27.01
2099.91    1.048    25.82
2100.91    1.048    24.63
2101.91    1.048    23.44
2102.91    1.049    22.25
2103.91    1.050    21.06
2104.91    1.051    19.87
2105.91    1.052    18.69
2106.91    1.053    17.51
2107.91    1.055    16.33
2108.91    1.057    15.16
2109.91    1.059    13.99
2110.91    1.061    12.82
2111.91    1.064    11.66
2112.91    1.066    10.51
2113.91    1.069     9.36
2114.91    1.072     8.22
2115.91    1.076     7.09
2116.91    1.079     5.96
2117.91    1.083     4.84
2118.91    1.087     3.73
2119.91    1.091     2.62
2120.91    1.095     1.53
2121.91    1.099     0.44
2122.91    1.104   359.36
2123.91    1.109   358.29
2124.91    1.114   357.23
2125.91    1.119   356.18
2126.91    1.124   355.14
2127.91    1.129   354.11
2128.91    1.135   353.09
2129.91    1.141   352.08
2130.91    1.147   351.08
2131.91    1.153   350.09
2132.91    1.159   349.11
2133.91    1.165   348.14
2134.91    1.171   347.18
2135.91    1.178   346.23
2136.91    1.184   345.30
2137.91    1.191   344.37
2138.91    1.198   343.45
2139.91    1.205   342.54
2140.91    1.212   341.65
2141.91    1.219   340.76
2142.91    1.226   339.89
2143.91    1.234   339.02
2144.91    1.241   338.17
2145.91    1.249   337.32
2146.91    1.256   336.49
2147.91    1.264   335.67
2148.91    1.271   334.85
2149.91    1.279   334.05
2150.91    1.287   333.25
2151.91    1.295   332.47
2152.91    1.302   331.69
2153.91    1.310   330.92
2154.91    1.318   330.17
2155.91    1.326   329.42
2156.91    1.334   328.68
2157.91    1.342   327.95
2158.91    1.350   327.23
2159.91    1.358   326.51
2160.91    1.366   325.81
2161.91    1.374   325.11
2162.91    1.382   324.42
2163.91    1.390   323.74
2164.91    1.398   323.07
2165.91    1.406   322.40
2166.91    1.414   321.74
2167.91    1.422   321.09
2168.91    1.430   320.45
2169.91    1.438   319.81
2170.91    1.446   319.19
2171.91    1.454   318.56
2172.91    1.462   317.95
2173.91    1.470   317.34
2174.91    1.478   316.74
2175.91    1.486   316.14
2176.91    1.493   315.55
2177.91    1.501   314.97
2178.91    1.509   314.39
2179.91    1.516   313.82
2180.91    1.524   313.25
2181.91    1.531   312.69
2182.91    1.539   312.14
2183.91    1.546   311.59
2184.91    1.554   311.04
2185.91    1.561   310.50
2186.91    1.568   309.97
2187.91    1.575   309.44
2188.91    1.582   308.91
2189.91    1.590   308.39
2190.91    1.597   307.88
2191.91    1.603   307.37
2192.91    1.610   306.86
2193.91    1.617   306.36
2194.91    1.624   305.86
2195.91    1.630   305.36
2196.91    1.637   304.87
2197.91    1.643   304.39
2198.91    1.650   303.90
2199.91    1.656   303.42
2200.91    1.662   302.95
2201.91    1.668   302.48
2202.91    1.674   302.01
2203.91    1.680   301.54
2204.91    1.686   301.08
2205.91    1.691   300.62
2206.91    1.697   300.17
2207.91    1.703   299.71
2208.91    1.708   299.26
2209.91    1.713   298.82
2210.91    1.719   298.37
2211.91    1.724   297.93
2212.91    1.729   297.49
2213.91    1.734   297.06
2214.91    1.739   296.62
2215.91    1.743   296.19
2216.91    1.748   295.76
2217.91    1.752   295.33
2218.91    1.757   294.91
2219.91    1.761   294.49
2220.91    1.765   294.06
2221.91    1.769   293.65
2222.91    1.773   293.23
2223.91    1.777   292.81
2224.91    1.781   292.40
2225.91    1.785   291.99
2226.91    1.788   291.58
2227.91    1.791   291.17
2228.91    1.795   290.76
2229.91    1.798   290.36
2230.91    1.801   289.95
2231.91    1.804   289.55
2232.91    1.807   289.15
2233.91    1.809   288.75
2234.91    1.812   288.35
2235.91    1.814   287.95
2236.91    1.817   287.55
2237.91    1.819   287.16
2238.91    1.821   286.76
2239.91    1.823   286.37






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 15:36:48



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