Double Star Calculator - Orbit

Orbital Elements for STF2130AB
WDS: STF2130AB WDS ID/Discoverer
P: 424.271 Orbital period (years)
a: 2.95817 Semi-major axis (arcseconds)
i: 146.569 Inclination (degrees)
Ω: 128.828 Longitude of ascending node (degrees)
T: 1938.848 Epoch of periastron passage (year)
e: 0.22128 Eccentricity
ω: 31.365 Longitude of periastron (degrees)
Start-Year: 1812.86435 Year
End-Year: 2237.13565 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2130AB
Position: 170520.20+542814.3 Epoch-2000 right ascension and declination
WDS-ID: 17053+5428 WDS designation
Discoverer Code: STF2130AB Discover designation and components
ADS number: 10345 Aitken Double Star catalog
HD number: 154905 HD catalog number
Hipparcos number: 83608 Hipparcos catalog number
V1: 5.66 Magnitude of the primary
V2: 5.69 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STF2130AB



WDS 6th Orbit including measures of STF2130AB

-- 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 STF2130AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.662   352.42
--------------------------
1812.86    2.736   227.73
1813.86    2.728   226.92
1814.86    2.719   226.10
1815.86    2.711   225.28
1816.86    2.704   224.46
1817.86    2.696   223.63
1818.86    2.688   222.80
1819.86    2.680   221.96
1820.86    2.673   221.12
1821.86    2.666   220.27
1822.86    2.658   219.41
1823.86    2.651   218.56
1824.86    2.644   217.69
1825.86    2.637   216.83
1826.86    2.631   215.96
1827.86    2.624   215.08
1828.86    2.618   214.20
1829.86    2.611   213.32
1830.86    2.605   212.43
1831.86    2.599   211.54
1832.86    2.593   210.64
1833.86    2.588   209.74
1834.86    2.582   208.84
1835.86    2.576   207.93
1836.86    2.571   207.01
1837.86    2.566   206.10
1838.86    2.561   205.18
1839.86    2.556   204.26
1840.86    2.551   203.33
1841.86    2.547   202.40
1842.86    2.542   201.47
1843.86    2.538   200.53
1844.86    2.534   199.59
1845.86    2.530   198.65
1846.86    2.526   197.70
1847.86    2.522   196.75
1848.86    2.519   195.80
1849.86    2.515   194.85
1850.86    2.512   193.89
1851.86    2.509   192.93
1852.86    2.506   191.97
1853.86    2.503   191.01
1854.86    2.500   190.04
1855.86    2.497   189.07
1856.86    2.495   188.10
1857.86    2.492   187.13
1858.86    2.490   186.16
1859.86    2.488   185.18
1860.86    2.486   184.20
1861.86    2.484   183.23
1862.86    2.482   182.25
1863.86    2.480   181.26
1864.86    2.478   180.28
1865.86    2.477   179.30
1866.86    2.475   178.31
1867.86    2.473   177.32
1868.86    2.472   176.33
1869.86    2.471   175.34
1870.86    2.469   174.35
1871.86    2.468   173.36
1872.86    2.467   172.37
1873.86    2.466   171.38
1874.86    2.465   170.38
1875.86    2.463   169.39
1876.86    2.462   168.39
1877.86    2.461   167.39
1878.86    2.460   166.40
1879.86    2.459   165.40
1880.86    2.458   164.40
1881.86    2.457   163.40
1882.86    2.456   162.39
1883.86    2.454   161.39
1884.86    2.453   160.39
1885.86    2.452   159.38
1886.86    2.451   158.38
1887.86    2.449   157.37
1888.86    2.448   156.36
1889.86    2.446   155.35
1890.86    2.445   154.34
1891.86    2.443   153.33
1892.86    2.441   152.32
1893.86    2.440   151.30
1894.86    2.438   150.29
1895.86    2.436   149.27
1896.86    2.433   148.25
1897.86    2.431   147.23
1898.86    2.429   146.21
1899.86    2.426   145.18
1900.86    2.423   144.15
1901.86    2.421   143.12
1902.86    2.418   142.09
1903.86    2.415   141.05
1904.86    2.411   140.02
1905.86    2.408   138.98
1906.86    2.404   137.93
1907.86    2.400   136.88
1908.86    2.396   135.83
1909.86    2.392   134.78
1910.86    2.388   133.72
1911.86    2.384   132.66
1912.86    2.379   131.60
1913.86    2.374   130.53
1914.86    2.369   129.45
1915.86    2.364   128.37
1916.86    2.359   127.29
1917.86    2.353   126.20
1918.86    2.348   125.11
1919.86    2.342   124.01
1920.86    2.336   122.90
1921.86    2.330   121.79
1922.86    2.323   120.67
1923.86    2.317   119.55
1924.86    2.310   118.42
1925.86    2.303   117.29
1926.86    2.296   116.14
1927.86    2.289   114.99
1928.86    2.282   113.84
1929.86    2.275   112.67
1930.86    2.268   111.50
1931.86    2.260   110.32
1932.86    2.253   109.14
1933.86    2.245   107.94
1934.86    2.238   106.74
1935.86    2.230   105.53
1936.86    2.222   104.31
1937.86    2.214   103.08
1938.86    2.207   101.84
1939.86    2.199   100.60
1940.86    2.191    99.34
1941.86    2.184    98.08
1942.86    2.176    96.81
1943.86    2.169    95.53
1944.86    2.161    94.24
1945.86    2.154    92.94
1946.86    2.147    91.63
1947.86    2.139    90.32
1948.86    2.133    88.99
1949.86    2.126    87.66
1950.86    2.119    86.32
1951.86    2.113    84.97
1952.86    2.107    83.61
1953.86    2.101    82.25
1954.86    2.095    80.87
1955.86    2.090    79.49
1956.86    2.085    78.11
1957.86    2.080    76.71
1958.86    2.076    75.31
1959.86    2.071    73.91
1960.86    2.068    72.50
1961.86    2.064    71.08
1962.86    2.061    69.66
1963.86    2.059    68.24
1964.86    2.056    66.81
1965.86    2.055    65.38
1966.86    2.053    63.95
1967.86    2.052    62.51
1968.86    2.052    61.08
1969.86    2.052    59.64
1970.86    2.052    58.21
1971.86    2.053    56.77
1972.86    2.054    55.34
1973.86    2.056    53.91
1974.86    2.058    52.48
1975.86    2.061    51.06
1976.86    2.064    49.64
1977.86    2.068    48.22
1978.86    2.072    46.81
1979.86    2.077    45.41
1980.86    2.082    44.01
1981.86    2.088    42.62
1982.86    2.094    41.24
1983.86    2.100    39.86
1984.86    2.107    38.50
1985.86    2.115    37.14
1986.86    2.122    35.79
1987.86    2.131    34.46
1988.86    2.139    33.13
1989.86    2.148    31.82
1990.86    2.158    30.51
1991.86    2.168    29.22
1992.86    2.178    27.94
1993.86    2.189    26.67
1994.86    2.200    25.42
1995.86    2.211    24.18
1996.86    2.223    22.95
1997.86    2.235    21.73
1998.86    2.247    20.53
1999.86    2.260    19.34
2000.86    2.273    18.16
2001.86    2.286    17.00
2002.86    2.299    15.85
2003.86    2.313    14.71
2004.86    2.327    13.59
2005.86    2.341    12.48
2006.86    2.355    11.38
2007.86    2.370    10.30
2008.86    2.385     9.23
2009.86    2.400     8.18
2010.86    2.415     7.13
2011.86    2.430     6.10
2012.86    2.445     5.09
2013.86    2.461     4.08
2014.86    2.476     3.09
2015.86    2.492     2.11
2016.86    2.508     1.14
2017.86    2.523     0.19
2018.86    2.539   359.24
2019.86    2.555   358.31
2020.86    2.571   357.39
2021.86    2.587   356.48
2022.86    2.603   355.59
2023.86    2.619   354.70
2024.86    2.635   353.83
2025.86    2.651   352.96
2026.86    2.667   352.11
2027.86    2.683   351.26
2028.86    2.699   350.43
2029.86    2.715   349.60
2030.86    2.731   348.79
2031.86    2.747   347.98
2032.86    2.763   347.19
2033.86    2.779   346.40
2034.86    2.795   345.62
2035.86    2.810   344.85
2036.86    2.826   344.09
2037.86    2.841   343.34
2038.86    2.857   342.59
2039.86    2.872   341.86
2040.86    2.887   341.13
2041.86    2.902   340.41
2042.86    2.917   339.69
2043.86    2.932   338.99
2044.86    2.947   338.29
2045.86    2.961   337.60
2046.86    2.976   336.91
2047.86    2.990   336.23
2048.86    3.004   335.56
2049.86    3.018   334.89
2050.86    3.032   334.23
2051.86    3.046   333.58
2052.86    3.059   332.93
2053.86    3.073   332.29
2054.86    3.086   331.65
2055.86    3.099   331.02
2056.86    3.112   330.39
2057.86    3.125   329.77
2058.86    3.137   329.15
2059.86    3.150   328.54
2060.86    3.162   327.93
2061.86    3.174   327.33
2062.86    3.186   326.73
2063.86    3.198   326.14
2064.86    3.209   325.55
2065.86    3.221   324.97
2066.86    3.232   324.39
2067.86    3.243   323.81
2068.86    3.253   323.24
2069.86    3.264   322.67
2070.86    3.274   322.10
2071.86    3.284   321.54
2072.86    3.294   320.98
2073.86    3.304   320.43
2074.86    3.314   319.88
2075.86    3.323   319.33
2076.86    3.332   318.78
2077.86    3.341   318.24
2078.86    3.350   317.70
2079.86    3.359   317.16
2080.86    3.367   316.63
2081.86    3.375   316.10
2082.86    3.383   315.57
2083.86    3.391   315.04
2084.86    3.399   314.51
2085.86    3.406   313.99
2086.86    3.413   313.47
2087.86    3.420   312.96
2088.86    3.427   312.44
2089.86    3.433   311.93
2090.86    3.440   311.41
2091.86    3.446   310.90
2092.86    3.452   310.40
2093.86    3.457   309.89
2094.86    3.463   309.39
2095.86    3.468   308.88
2096.86    3.473   308.38
2097.86    3.478   307.88
2098.86    3.483   307.38
2099.86    3.487   306.88
2100.86    3.492   306.39
2101.86    3.496   305.89
2102.86    3.500   305.40
2103.86    3.503   304.91
2104.86    3.507   304.41
2105.86    3.510   303.92
2106.86    3.513   303.43
2107.86    3.516   302.94
2108.86    3.518   302.45
2109.86    3.521   301.97
2110.86    3.523   301.48
2111.86    3.525   300.99
2112.86    3.527   300.51
2113.86    3.529   300.02
2114.86    3.530   299.54
2115.86    3.532   299.05
2116.86    3.533   298.57
2117.86    3.534   298.08
2118.86    3.534   297.60
2119.86    3.535   297.12
2120.86    3.535   296.63
2121.86    3.535   296.15
2122.86    3.535   295.66
2123.86    3.535   295.18
2124.86    3.534   294.70
2125.86    3.534   294.21
2126.86    3.533   293.73
2127.86    3.532   293.25
2128.86    3.531   292.76
2129.86    3.529   292.28
2130.86    3.528   291.79
2131.86    3.526   291.30
2132.86    3.524   290.82
2133.86    3.522   290.33
2134.86    3.520   289.84
2135.86    3.518   289.36
2136.86    3.515   288.87
2137.86    3.512   288.38
2138.86    3.509   287.89
2139.86    3.506   287.40
2140.86    3.503   286.90
2141.86    3.500   286.41
2142.86    3.496   285.92
2143.86    3.492   285.42
2144.86    3.488   284.93
2145.86    3.484   284.43
2146.86    3.480   283.93
2147.86    3.476   283.43
2148.86    3.471   282.93
2149.86    3.466   282.43
2150.86    3.462   281.93
2151.86    3.457   281.42
2152.86    3.452   280.91
2153.86    3.446   280.41
2154.86    3.441   279.90
2155.86    3.435   279.38
2156.86    3.430   278.87
2157.86    3.424   278.36
2158.86    3.418   277.84
2159.86    3.412   277.32
2160.86    3.405   276.80
2161.86    3.399   276.28
2162.86    3.393   275.76
2163.86    3.386   275.23
2164.86    3.379   274.70
2165.86    3.372   274.17
2166.86    3.365   273.64
2167.86    3.358   273.10
2168.86    3.351   272.57
2169.86    3.344   272.03
2170.86    3.336   271.49
2171.86    3.329   270.94
2172.86    3.321   270.40
2173.86    3.313   269.85
2174.86    3.305   269.29
2175.86    3.297   268.74
2176.86    3.289   268.18
2177.86    3.281   267.62
2178.86    3.273   267.06
2179.86    3.265   266.49
2180.86    3.256   265.93
2181.86    3.248   265.35
2182.86    3.239   264.78
2183.86    3.230   264.20
2184.86    3.222   263.62
2185.86    3.213   263.04
2186.86    3.204   262.45
2187.86    3.195   261.86
2188.86    3.186   261.27
2189.86    3.177   260.67
2190.86    3.168   260.07
2191.86    3.159   259.47
2192.86    3.149   258.86
2193.86    3.140   258.25
2194.86    3.131   257.63
2195.86    3.121   257.01
2196.86    3.112   256.39
2197.86    3.102   255.77
2198.86    3.093   255.14
2199.86    3.083   254.50
2200.86    3.074   253.87
2201.86    3.064   253.22
2202.86    3.055   252.58
2203.86    3.045   251.93
2204.86    3.035   251.27
2205.86    3.026   250.62
2206.86    3.016   249.95
2207.86    3.006   249.29
2208.86    2.997   248.62
2209.86    2.987   247.94
2210.86    2.977   247.26
2211.86    2.967   246.58
2212.86    2.958   245.89
2213.86    2.948   245.20
2214.86    2.939   244.50
2215.86    2.929   243.80
2216.86    2.919   243.09
2217.86    2.910   242.38
2218.86    2.900   241.66
2219.86    2.891   240.94
2220.86    2.881   240.22
2221.86    2.872   239.49
2222.86    2.863   238.75
2223.86    2.853   238.01
2224.86    2.844   237.27
2225.86    2.835   236.52
2226.86    2.826   235.76
2227.86    2.816   235.00
2228.86    2.807   234.24
2229.86    2.799   233.47
2230.86    2.790   232.70
2231.86    2.781   231.92
2232.86    2.772   231.13
2233.86    2.763   230.34
2234.86    2.755   229.55
2235.86    2.746   228.75
2236.86    2.738   227.95






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 17:33:30



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