Double Star Calculator - Orbit

Orbital Elements for STF1757AB
WDS: STF1757AB WDS ID/Discoverer
P: 344.113 Orbital period (years)
a: 2.2042 Semi-major axis (arcseconds)
i: 50.025 Inclination (degrees)
Ω: 97.408 Longitude of ascending node (degrees)
T: 2088.166 Epoch of periastron passage (year)
e: 0.25953 Eccentricity
ω: 160.383 Longitude of periastron (degrees)
Start-Year: 1852.9436 Year
End-Year: 2197.0564 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1757AB
Position: 133416.38-001849.8 Epoch-2000 right ascension and declination
WDS-ID: 13343-0019 WDS designation
Discoverer Code: STF1757AB Discover designation and components
ADS number: 8949 Aitken Double Star catalog
HD number: 118036 HD catalog number
Hipparcos number: 66212 Hipparcos catalog number
V1: 7.82 Magnitude of the primary
V2: 8.75 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 STF1757AB



WDS 6th Orbit including measures of STF1757AB

-- 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 STF1757AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.495   152.84
--------------------------
1852.94    1.865    46.62
1853.94    1.882    47.52
1854.94    1.899    48.40
1855.94    1.915    49.27
1856.94    1.932    50.12
1857.94    1.948    50.96
1858.94    1.965    51.79
1859.94    1.982    52.60
1860.94    1.998    53.39
1861.94    2.015    54.18
1862.94    2.031    54.95
1863.94    2.048    55.70
1864.94    2.064    56.45
1865.94    2.081    57.18
1866.94    2.097    57.91
1867.94    2.113    58.62
1868.94    2.129    59.32
1869.94    2.145    60.01
1870.94    2.161    60.69
1871.94    2.177    61.36
1872.94    2.193    62.02
1873.94    2.208    62.67
1874.94    2.224    63.31
1875.94    2.239    63.95
1876.94    2.254    64.57
1877.94    2.269    65.19
1878.94    2.284    65.80
1879.94    2.299    66.40
1880.94    2.313    66.99
1881.94    2.327    67.58
1882.94    2.342    68.16
1883.94    2.356    68.73
1884.94    2.369    69.29
1885.94    2.383    69.85
1886.94    2.396    70.40
1887.94    2.410    70.95
1888.94    2.423    71.49
1889.94    2.435    72.02
1890.94    2.448    72.55
1891.94    2.460    73.08
1892.94    2.472    73.60
1893.94    2.484    74.11
1894.94    2.496    74.62
1895.94    2.507    75.12
1896.94    2.518    75.62
1897.94    2.529    76.12
1898.94    2.540    76.61
1899.94    2.551    77.09
1900.94    2.561    77.58
1901.94    2.571    78.06
1902.94    2.580    78.53
1903.94    2.590    79.00
1904.94    2.599    79.47
1905.94    2.608    79.94
1906.94    2.616    80.40
1907.94    2.625    80.86
1908.94    2.633    81.31
1909.94    2.641    81.77
1910.94    2.648    82.22
1911.94    2.656    82.67
1912.94    2.663    83.11
1913.94    2.669    83.56
1914.94    2.676    84.00
1915.94    2.682    84.44
1916.94    2.688    84.88
1917.94    2.693    85.31
1918.94    2.698    85.74
1919.94    2.703    86.18
1920.94    2.708    86.61
1921.94    2.712    87.04
1922.94    2.716    87.47
1923.94    2.720    87.89
1924.94    2.724    88.32
1925.94    2.727    88.74
1926.94    2.730    89.17
1927.94    2.732    89.59
1928.94    2.734    90.01
1929.94    2.736    90.43
1930.94    2.738    90.85
1931.94    2.739    91.27
1932.94    2.740    91.69
1933.94    2.741    92.11
1934.94    2.741    92.53
1935.94    2.741    92.95
1936.94    2.741    93.37
1937.94    2.740    93.79
1938.94    2.739    94.21
1939.94    2.738    94.63
1940.94    2.736    95.06
1941.94    2.734    95.48
1942.94    2.732    95.90
1943.94    2.729    96.32
1944.94    2.726    96.75
1945.94    2.723    97.17
1946.94    2.719    97.60
1947.94    2.715    98.02
1948.94    2.711    98.45
1949.94    2.706    98.88
1950.94    2.701    99.31
1951.94    2.696    99.75
1952.94    2.691   100.18
1953.94    2.685   100.62
1954.94    2.678   101.06
1955.94    2.672   101.50
1956.94    2.665   101.94
1957.94    2.657   102.39
1958.94    2.650   102.83
1959.94    2.642   103.28
1960.94    2.634   103.74
1961.94    2.625   104.19
1962.94    2.616   104.65
1963.94    2.607   105.11
1964.94    2.597   105.58
1965.94    2.587   106.05
1966.94    2.577   106.52
1967.94    2.566   107.00
1968.94    2.555   107.48
1969.94    2.544   107.97
1970.94    2.532   108.46
1971.94    2.520   108.95
1972.94    2.508   109.45
1973.94    2.495   109.95
1974.94    2.482   110.46
1975.94    2.469   110.98
1976.94    2.455   111.50
1977.94    2.442   112.02
1978.94    2.427   112.55
1979.94    2.413   113.09
1980.94    2.398   113.64
1981.94    2.383   114.19
1982.94    2.367   114.75
1983.94    2.352   115.32
1984.94    2.335   115.89
1985.94    2.319   116.47
1986.94    2.302   117.06
1987.94    2.285   117.66
1988.94    2.268   118.27
1989.94    2.251   118.89
1990.94    2.233   119.51
1991.94    2.215   120.15
1992.94    2.196   120.80
1993.94    2.178   121.46
1994.94    2.159   122.13
1995.94    2.140   122.81
1996.94    2.120   123.51
1997.94    2.101   124.22
1998.94    2.081   124.94
1999.94    2.061   125.67
2000.94    2.041   126.42
2001.94    2.020   127.19
2002.94    2.000   127.97
2003.94    1.979   128.76
2004.94    1.958   129.58
2005.94    1.937   130.41
2006.94    1.916   131.26
2007.94    1.894   132.13
2008.94    1.873   133.02
2009.94    1.851   133.93
2010.94    1.829   134.86
2011.94    1.808   135.81
2012.94    1.786   136.79
2013.94    1.764   137.79
2014.94    1.742   138.82
2015.94    1.720   139.87
2016.94    1.698   140.95
2017.94    1.676   142.06
2018.94    1.655   143.19
2019.94    1.633   144.36
2020.94    1.612   145.56
2021.94    1.590   146.79
2022.94    1.569   148.05
2023.94    1.548   149.35
2024.94    1.527   150.69
2025.94    1.507   152.06
2026.94    1.487   153.47
2027.94    1.467   154.91
2028.94    1.447   156.40
2029.94    1.428   157.92
2030.94    1.410   159.49
2031.94    1.392   161.10
2032.94    1.374   162.75
2033.94    1.357   164.44
2034.94    1.341   166.17
2035.94    1.325   167.95
2036.94    1.310   169.76
2037.94    1.296   171.62
2038.94    1.282   173.52
2039.94    1.270   175.45
2040.94    1.258   177.43
2041.94    1.247   179.44
2042.94    1.237   181.48
2043.94    1.229   183.56
2044.94    1.221   185.66
2045.94    1.214   187.79
2046.94    1.208   189.94
2047.94    1.203   192.11
2048.94    1.199   194.30
2049.94    1.197   196.49
2050.94    1.195   198.70
2051.94    1.195   200.91
2052.94    1.196   203.11
2053.94    1.197   205.32
2054.94    1.200   207.51
2055.94    1.204   209.69
2056.94    1.209   211.86
2057.94    1.214   214.01
2058.94    1.221   216.14
2059.94    1.229   218.24
2060.94    1.237   220.31
2061.94    1.246   222.36
2062.94    1.256   224.38
2063.94    1.267   226.36
2064.94    1.278   228.31
2065.94    1.289   230.22
2066.94    1.302   232.10
2067.94    1.314   233.95
2068.94    1.327   235.75
2069.94    1.341   237.53
2070.94    1.354   239.26
2071.94    1.368   240.97
2072.94    1.382   242.63
2073.94    1.396   244.27
2074.94    1.410   245.87
2075.94    1.424   247.44
2076.94    1.438   248.98
2077.94    1.452   250.49
2078.94    1.466   251.97
2079.94    1.479   253.43
2080.94    1.492   254.86
2081.94    1.505   256.26
2082.94    1.518   257.64
2083.94    1.530   259.00
2084.94    1.542   260.33
2085.94    1.554   261.65
2086.94    1.564   262.95
2087.94    1.575   264.23
2088.94    1.585   265.49
2089.94    1.594   266.74
2090.94    1.603   267.97
2091.94    1.611   269.19
2092.94    1.619   270.40
2093.94    1.626   271.60
2094.94    1.633   272.79
2095.94    1.638   273.97
2096.94    1.644   275.14
2097.94    1.648   276.30
2098.94    1.652   277.46
2099.94    1.655   278.61
2100.94    1.658   279.76
2101.94    1.660   280.91
2102.94    1.661   282.05
2103.94    1.662   283.19
2104.94    1.662   284.33
2105.94    1.662   285.48
2106.94    1.661   286.62
2107.94    1.659   287.76
2108.94    1.657   288.91
2109.94    1.655   290.06
2110.94    1.652   291.21
2111.94    1.648   292.37
2112.94    1.644   293.54
2113.94    1.639   294.71
2114.94    1.634   295.88
2115.94    1.629   297.07
2116.94    1.623   298.26
2117.94    1.617   299.46
2118.94    1.611   300.67
2119.94    1.604   301.89
2120.94    1.597   303.13
2121.94    1.590   304.37
2122.94    1.582   305.62
2123.94    1.575   306.89
2124.94    1.567   308.17
2125.94    1.559   309.46
2126.94    1.551   310.76
2127.94    1.543   312.08
2128.94    1.535   313.41
2129.94    1.527   314.76
2130.94    1.519   316.12
2131.94    1.511   317.49
2132.94    1.503   318.88
2133.94    1.495   320.28
2134.94    1.488   321.70
2135.94    1.480   323.13
2136.94    1.473   324.58
2137.94    1.466   326.04
2138.94    1.460   327.51
2139.94    1.453   329.00
2140.94    1.447   330.50
2141.94    1.442   332.01
2142.94    1.437   333.53
2143.94    1.432   335.06
2144.94    1.427   336.61
2145.94    1.423   338.16
2146.94    1.420   339.72
2147.94    1.417   341.29
2148.94    1.414   342.86
2149.94    1.412   344.44
2150.94    1.411   346.03
2151.94    1.410   347.61
2152.94    1.409   349.20
2153.94    1.409   350.79
2154.94    1.410   352.38
2155.94    1.411   353.96
2156.94    1.413   355.54
2157.94    1.416   357.12
2158.94    1.419   358.69
2159.94    1.422     0.25
2160.94    1.427     1.80
2161.94    1.431     3.35
2162.94    1.437     4.88
2163.94    1.443     6.41
2164.94    1.449     7.91
2165.94    1.456     9.41
2166.94    1.464    10.89
2167.94    1.472    12.35
2168.94    1.480    13.80
2169.94    1.489    15.23
2170.94    1.499    16.64
2171.94    1.509    18.04
2172.94    1.519    19.41
2173.94    1.530    20.77
2174.94    1.541    22.11
2175.94    1.553    23.43
2176.94    1.565    24.72
2177.94    1.578    26.00
2178.94    1.591    27.26
2179.94    1.604    28.49
2180.94    1.617    29.71
2181.94    1.631    30.90
2182.94    1.645    32.08
2183.94    1.660    33.23
2184.94    1.674    34.37
2185.94    1.689    35.48
2186.94    1.704    36.58
2187.94    1.719    37.66
2188.94    1.735    38.71
2189.94    1.751    39.75
2190.94    1.766    40.77
2191.94    1.782    41.77
2192.94    1.798    42.76
2193.94    1.815    43.72
2194.94    1.831    44.67
2195.94    1.847    45.60
2196.94    1.864    46.52






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 16:57:42



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