Double Star Calculator - Orbit

Orbital Elements for STF183AB
WDS: STF183AB WDS ID/Discoverer
P: 332.790 Orbital period (years)
a: 0.489 Semi-major axis (arcseconds)
i: 121.3 Inclination (degrees)
Ω: 170.3 Longitude of ascending node (degrees)
T: 1966.420 Epoch of periastron passage (year)
e: 0.523 Eccentricity
ω: 290.5 Longitude of periastron (degrees)
Start-Year: 1858.605 Year
End-Year: 2191.395 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF183AB
Position: 015507.39+284752.6 Epoch-2000 right ascension and declination
WDS-ID: 01551+2847 WDS designation
Discoverer Code: STF183AB Discover designation and components
ADS number: 1522 Aitken Double Star catalog
HD number: 11671 HD catalog number
Hipparcos number: 8938 Hipparcos catalog number
V1: 7.67 Magnitude of the primary
V2: 10.00 Magnitude of the secondary
Equinox: Equinox
Date: 1997 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: USN2000b Reference

Double Star Orbit for STF183AB



WDS 6th Orbit including measures of STF183AB

-- 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 STF183AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.360   132.61
--------------------------
1858.61    0.541    17.48
1859.61    0.541    17.09
1860.61    0.542    16.70
1861.61    0.542    16.31
1862.61    0.543    15.92
1863.61    0.543    15.53
1864.61    0.544    15.14
1865.61    0.544    14.76
1866.61    0.545    14.37
1867.61    0.545    13.99
1868.61    0.545    13.60
1869.61    0.545    13.21
1870.61    0.545    12.83
1871.61    0.545    12.44
1872.61    0.545    12.06
1873.61    0.545    11.67
1874.61    0.545    11.29
1875.61    0.545    10.90
1876.61    0.544    10.51
1877.61    0.544    10.13
1878.61    0.544     9.74
1879.61    0.543     9.35
1880.61    0.543     8.96
1881.61    0.542     8.57
1882.61    0.541     8.18
1883.61    0.540     7.79
1884.61    0.539     7.40
1885.61    0.539     7.01
1886.61    0.537     6.61
1887.61    0.536     6.21
1888.61    0.535     5.81
1889.61    0.534     5.41
1890.61    0.533     5.01
1891.61    0.531     4.60
1892.61    0.529     4.20
1893.61    0.528     3.79
1894.61    0.526     3.38
1895.61    0.524     2.96
1896.61    0.522     2.54
1897.61    0.520     2.12
1898.61    0.518     1.70
1899.61    0.516     1.27
1900.61    0.514     0.83
1901.61    0.511     0.40
1902.61    0.508   359.96
1903.61    0.506   359.51
1904.61    0.503   359.06
1905.61    0.500   358.61
1906.61    0.497   358.15
1907.61    0.494   357.68
1908.61    0.491   357.21
1909.61    0.487   356.73
1910.61    0.484   356.24
1911.61    0.480   355.75
1912.61    0.476   355.25
1913.61    0.472   354.74
1914.61    0.468   354.22
1915.61    0.464   353.69
1916.61    0.459   353.15
1917.61    0.455   352.60
1918.61    0.450   352.04
1919.61    0.445   351.47
1920.61    0.440   350.89
1921.61    0.435   350.29
1922.61    0.429   349.67
1923.61    0.424   349.05
1924.61    0.418   348.40
1925.61    0.412   347.73
1926.61    0.406   347.05
1927.61    0.400   346.34
1928.61    0.393   345.62
1929.61    0.387   344.86
1930.61    0.380   344.08
1931.61    0.373   343.27
1932.61    0.365   342.43
1933.61    0.358   341.55
1934.61    0.350   340.64
1935.61    0.342   339.68
1936.61    0.334   338.68
1937.61    0.326   337.62
1938.61    0.317   336.51
1939.61    0.308   335.34
1940.61    0.299   334.10
1941.61    0.290   332.78
1942.61    0.281   331.37
1943.61    0.271   329.87
1944.61    0.261   328.25
1945.61    0.251   326.50
1946.61    0.241   324.62
1947.61    0.231   322.57
1948.61    0.221   320.33
1949.61    0.211   317.87
1950.61    0.201   315.16
1951.61    0.191   312.17
1952.61    0.181   308.85
1953.61    0.171   305.14
1954.61    0.162   301.01
1955.61    0.153   296.39
1956.61    0.145   291.25
1957.61    0.138   285.55
1958.61    0.133   279.29
1959.61    0.128   272.52
1960.61    0.125   265.34
1961.61    0.124   257.91
1962.61    0.124   250.43
1963.61    0.126   243.09
1964.61    0.130   236.07
1965.61    0.135   229.51
1966.61    0.141   223.48
1967.61    0.148   218.00
1968.61    0.156   213.06
1969.61    0.165   208.61
1970.61    0.174   204.60
1971.61    0.183   200.99
1972.61    0.192   197.72
1973.61    0.201   194.75
1974.61    0.210   192.04
1975.61    0.219   189.55
1976.61    0.228   187.26
1977.61    0.236   185.13
1978.61    0.244   183.15
1979.61    0.252   181.29
1980.61    0.260   179.55
1981.61    0.267   177.90
1982.61    0.274   176.34
1983.61    0.281   174.85
1984.61    0.287   173.42
1985.61    0.293   172.06
1986.61    0.298   170.75
1987.61    0.304   169.49
1988.61    0.309   168.26
1989.61    0.313   167.08
1990.61    0.318   165.93
1991.61    0.322   164.81
1992.61    0.325   163.71
1993.61    0.329   162.64
1994.61    0.332   161.60
1995.61    0.335   160.57
1996.61    0.338   159.56
1997.61    0.341   158.57
1998.61    0.343   157.59
1999.61    0.346   156.62
2000.61    0.348   155.67
2001.61    0.350   154.73
2002.61    0.351   153.79
2003.61    0.353   152.87
2004.61    0.354   151.95
2005.61    0.355   151.04
2006.61    0.357   150.14
2007.61    0.358   149.24
2008.61    0.358   148.35
2009.61    0.359   147.46
2010.61    0.360   146.57
2011.61    0.360   145.69
2012.61    0.361   144.80
2013.61    0.361   143.93
2014.61    0.361   143.05
2015.61    0.362   142.17
2016.61    0.362   141.30
2017.61    0.362   140.42
2018.61    0.362   139.55
2019.61    0.362   138.67
2020.61    0.362   137.80
2021.61    0.361   136.92
2022.61    0.361   136.04
2023.61    0.361   135.16
2024.61    0.361   134.28
2025.61    0.360   133.40
2026.61    0.360   132.52
2027.61    0.360   131.64
2028.61    0.359   130.75
2029.61    0.359   129.86
2030.61    0.358   128.97
2031.61    0.358   128.08
2032.61    0.357   127.18
2033.61    0.357   126.28
2034.61    0.357   125.38
2035.61    0.356   124.48
2036.61    0.356   123.58
2037.61    0.355   122.67
2038.61    0.355   121.76
2039.61    0.354   120.85
2040.61    0.354   119.93
2041.61    0.353   119.02
2042.61    0.353   118.10
2043.61    0.352   117.18
2044.61    0.352   116.25
2045.61    0.352   115.33
2046.61    0.351   114.40
2047.61    0.351   113.47
2048.61    0.351   112.54
2049.61    0.350   111.61
2050.61    0.350   110.67
2051.61    0.350   109.74
2052.61    0.350   108.80
2053.61    0.349   107.86
2054.61    0.349   106.92
2055.61    0.349   105.98
2056.61    0.349   105.04
2057.61    0.349   104.10
2058.61    0.349   103.16
2059.61    0.349   102.22
2060.61    0.349   101.28
2061.61    0.349   100.34
2062.61    0.349    99.40
2063.61    0.349    98.46
2064.61    0.350    97.53
2065.61    0.350    96.59
2066.61    0.350    95.66
2067.61    0.351    94.72
2068.61    0.351    93.79
2069.61    0.351    92.86
2070.61    0.352    91.94
2071.61    0.352    91.01
2072.61    0.353    90.09
2073.61    0.354    89.18
2074.61    0.354    88.26
2075.61    0.355    87.35
2076.61    0.356    86.44
2077.61    0.356    85.54
2078.61    0.357    84.64
2079.61    0.358    83.74
2080.61    0.359    82.85
2081.61    0.360    81.97
2082.61    0.361    81.09
2083.61    0.362    80.21
2084.61    0.363    79.34
2085.61    0.364    78.47
2086.61    0.365    77.61
2087.61    0.366    76.75
2088.61    0.368    75.90
2089.61    0.369    75.06
2090.61    0.370    74.22
2091.61    0.371    73.38
2092.61    0.373    72.56
2093.61    0.374    71.73
2094.61    0.376    70.92
2095.61    0.377    70.11
2096.61    0.378    69.31
2097.61    0.380    68.51
2098.61    0.382    67.72
2099.61    0.383    66.94
2100.61    0.385    66.16
2101.61    0.386    65.39
2102.61    0.388    64.63
2103.61    0.390    63.87
2104.61    0.391    63.12
2105.61    0.393    62.37
2106.61    0.395    61.64
2107.61    0.397    60.90
2108.61    0.399    60.18
2109.61    0.400    59.46
2110.61    0.402    58.75
2111.61    0.404    58.05
2112.61    0.406    57.35
2113.61    0.408    56.66
2114.61    0.410    55.97
2115.61    0.412    55.29
2116.61    0.414    54.62
2117.61    0.416    53.95
2118.61    0.418    53.29
2119.61    0.420    52.64
2120.61    0.422    51.99
2121.61    0.424    51.35
2122.61    0.426    50.71
2123.61    0.428    50.08
2124.61    0.430    49.46
2125.61    0.432    48.84
2126.61    0.434    48.23
2127.61    0.436    47.63
2128.61    0.438    47.03
2129.61    0.440    46.43
2130.61    0.442    45.84
2131.61    0.444    45.26
2132.61    0.446    44.68
2133.61    0.448    44.11
2134.61    0.450    43.54
2135.61    0.452    42.98
2136.61    0.454    42.42
2137.61    0.456    41.87
2138.61    0.458    41.32
2139.61    0.460    40.78
2140.61    0.463    40.24
2141.61    0.465    39.70
2142.61    0.467    39.18
2143.61    0.469    38.65
2144.61    0.471    38.13
2145.61    0.473    37.62
2146.61    0.475    37.11
2147.61    0.477    36.60
2148.61    0.479    36.10
2149.61    0.480    35.60
2150.61    0.482    35.11
2151.61    0.484    34.62
2152.61    0.486    34.13
2153.61    0.488    33.65
2154.61    0.490    33.17
2155.61    0.492    32.69
2156.61    0.494    32.22
2157.61    0.496    31.75
2158.61    0.497    31.29
2159.61    0.499    30.83
2160.61    0.501    30.37
2161.61    0.503    29.91
2162.61    0.504    29.46
2163.61    0.506    29.01
2164.61    0.508    28.57
2165.61    0.509    28.13
2166.61    0.511    27.69
2167.61    0.513    27.25
2168.61    0.514    26.81
2169.61    0.516    26.38
2170.61    0.517    25.95
2171.61    0.519    25.53
2172.61    0.520    25.10
2173.61    0.522    24.68
2174.61    0.523    24.26
2175.61    0.524    23.84
2176.61    0.526    23.43
2177.61    0.527    23.01
2178.61    0.528    22.60
2179.61    0.529    22.19
2180.61    0.531    21.78
2181.61    0.532    21.38
2182.61    0.533    20.97
2183.61    0.534    20.57
2184.61    0.535    20.17
2185.61    0.536    19.77
2186.61    0.537    19.37
2187.61    0.538    18.97
2188.61    0.538    18.58
2189.61    0.539    18.18
2190.61    0.540    17.79






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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 14:55:19



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