Double Star Calculator - Orbit

Orbital Elements for STF346AB
WDS: STF346AB WDS ID/Discoverer
P: 227.000 Orbital period (years)
a: 0.47 Semi-major axis (arcseconds)
i: 77.5 Inclination (degrees)
Ω: 92.8 Longitude of ascending node (degrees)
T: 1938.500 Epoch of periastron passage (year)
e: 0.73 Eccentricity
ω: 323.0 Longitude of periastron (degrees)
Start-Year: 1911.5 Year
End-Year: 2138.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF346AB
Position: 030526.69+251518.7 Epoch-2000 right ascension and declination
WDS-ID: 03054+2515 WDS designation
Discoverer Code: STF346AB Discover designation and components
ADS number: 2336 Aitken Double Star catalog
HD number: 19134 HD catalog number
Hipparcos number: 14376 Hipparcos catalog number
V1: 6.21 Magnitude of the primary
V2: 6.19 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1980 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: Hei1981a Reference

Double Star Orbit for STF346AB



WDS 6th Orbit including measures of STF346AB

-- 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 STF346AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.554   259.97
--------------------------
1911.50    0.430   275.00
1912.50    0.419   275.28
1913.50    0.406   275.59
1914.50    0.394   275.91
1915.50    0.381   276.26
1916.50    0.367   276.63
1917.50    0.353   277.03
1918.50    0.338   277.46
1919.50    0.323   277.94
1920.50    0.307   278.46
1921.50    0.291   279.04
1922.50    0.274   279.69
1923.50    0.256   280.43
1924.50    0.238   281.28
1925.50    0.219   282.28
1926.50    0.199   283.47
1927.50    0.178   284.94
1928.50    0.156   286.80
1929.50    0.134   289.28
1930.50    0.111   292.77
1931.50    0.087   298.13
1932.50    0.064   307.41
1933.50    0.044   326.25
1934.50    0.033     5.22
1935.50    0.042    46.43
1936.50    0.061    67.20
1937.50    0.083    77.46
1938.50    0.103    83.54
1939.50    0.120    87.73
1940.50    0.132    90.99
1941.50    0.141    93.74
1942.50    0.147    96.23
1943.50    0.149    98.59
1944.50    0.149   100.93
1945.50    0.147   103.30
1946.50    0.143   105.77
1947.50    0.138   108.39
1948.50    0.133   111.21
1949.50    0.127   114.28
1950.50    0.121   117.66
1951.50    0.114   121.42
1952.50    0.108   125.61
1953.50    0.102   130.31
1954.50    0.097   135.57
1955.50    0.092   141.42
1956.50    0.088   147.86
1957.50    0.085   154.83
1958.50    0.083   162.21
1959.50    0.083   169.79
1960.50    0.083   177.35
1961.50    0.085   184.65
1962.50    0.089   191.51
1963.50    0.093   197.79
1964.50    0.098   203.47
1965.50    0.104   208.52
1966.50    0.111   213.00
1967.50    0.118   216.95
1968.50    0.126   220.44
1969.50    0.134   223.52
1970.50    0.142   226.26
1971.50    0.150   228.70
1972.50    0.158   230.88
1973.50    0.167   232.84
1974.50    0.176   234.60
1975.50    0.184   236.20
1976.50    0.193   237.66
1977.50    0.202   238.99
1978.50    0.211   240.21
1979.50    0.219   241.33
1980.50    0.228   242.37
1981.50    0.237   243.33
1982.50    0.245   244.22
1983.50    0.254   245.06
1984.50    0.262   245.83
1985.50    0.271   246.56
1986.50    0.279   247.25
1987.50    0.288   247.89
1988.50    0.296   248.50
1989.50    0.304   249.08
1990.50    0.312   249.62
1991.50    0.320   250.14
1992.50    0.329   250.63
1993.50    0.336   251.10
1994.50    0.344   251.55
1995.50    0.352   251.98
1996.50    0.360   252.38
1997.50    0.368   252.78
1998.50    0.375   253.15
1999.50    0.383   253.51
2000.50    0.390   253.86
2001.50    0.397   254.19
2002.50    0.405   254.52
2003.50    0.412   254.83
2004.50    0.419   255.13
2005.50    0.426   255.42
2006.50    0.433   255.70
2007.50    0.440   255.97
2008.50    0.447   256.23
2009.50    0.453   256.49
2010.50    0.460   256.74
2011.50    0.466   256.98
2012.50    0.473   257.22
2013.50    0.479   257.44
2014.50    0.485   257.67
2015.50    0.492   257.88
2016.50    0.498   258.10
2017.50    0.504   258.30
2018.50    0.510   258.50
2019.50    0.516   258.70
2020.50    0.521   258.89
2021.50    0.527   259.08
2022.50    0.533   259.27
2023.50    0.538   259.45
2024.50    0.544   259.63
2025.50    0.549   259.80
2026.50    0.554   259.97
2027.50    0.559   260.14
2028.50    0.564   260.30
2029.50    0.569   260.46
2030.50    0.574   260.62
2031.50    0.579   260.78
2032.50    0.584   260.93
2033.50    0.588   261.08
2034.50    0.593   261.23
2035.50    0.597   261.38
2036.50    0.602   261.52
2037.50    0.606   261.66
2038.50    0.610   261.80
2039.50    0.614   261.94
2040.50    0.618   262.08
2041.50    0.622   262.21
2042.50    0.626   262.34
2043.50    0.630   262.48
2044.50    0.634   262.61
2045.50    0.637   262.73
2046.50    0.641   262.86
2047.50    0.644   262.99
2048.50    0.647   263.11
2049.50    0.650   263.23
2050.50    0.653   263.36
2051.50    0.656   263.48
2052.50    0.659   263.60
2053.50    0.662   263.72
2054.50    0.665   263.83
2055.50    0.668   263.95
2056.50    0.670   264.07
2057.50    0.673   264.18
2058.50    0.675   264.29
2059.50    0.677   264.41
2060.50    0.679   264.52
2061.50    0.681   264.63
2062.50    0.683   264.74
2063.50    0.685   264.85
2064.50    0.687   264.96
2065.50    0.688   265.07
2066.50    0.690   265.18
2067.50    0.691   265.29
2068.50    0.693   265.40
2069.50    0.694   265.51
2070.50    0.695   265.62
2071.50    0.696   265.72
2072.50    0.697   265.83
2073.50    0.698   265.94
2074.50    0.698   266.04
2075.50    0.699   266.15
2076.50    0.699   266.25
2077.50    0.700   266.36
2078.50    0.700   266.47
2079.50    0.700   266.57
2080.50    0.700   266.68
2081.50    0.700   266.78
2082.50    0.700   266.89
2083.50    0.700   267.00
2084.50    0.699   267.10
2085.50    0.698   267.21
2086.50    0.698   267.31
2087.50    0.697   267.42
2088.50    0.696   267.53
2089.50    0.695   267.63
2090.50    0.694   267.74
2091.50    0.692   267.85
2092.50    0.691   267.96
2093.50    0.689   268.07
2094.50    0.688   268.18
2095.50    0.686   268.29
2096.50    0.684   268.40
2097.50    0.681   268.51
2098.50    0.679   268.62
2099.50    0.677   268.73
2100.50    0.674   268.85
2101.50    0.671   268.96
2102.50    0.668   269.08
2103.50    0.665   269.19
2104.50    0.662   269.31
2105.50    0.659   269.43
2106.50    0.655   269.55
2107.50    0.652   269.67
2108.50    0.648   269.79
2109.50    0.644   269.92
2110.50    0.639   270.04
2111.50    0.635   270.17
2112.50    0.631   270.30
2113.50    0.626   270.43
2114.50    0.621   270.57
2115.50    0.616   270.70
2116.50    0.610   270.84
2117.50    0.605   270.98
2118.50    0.599   271.12
2119.50    0.593   271.27
2120.50    0.587   271.42
2121.50    0.580   271.57
2122.50    0.574   271.72
2123.50    0.567   271.88
2124.50    0.560   272.05
2125.50    0.553   272.21
2126.50    0.545   272.39
2127.50    0.537   272.56
2128.50    0.529   272.75
2129.50    0.520   272.93
2130.50    0.512   273.13
2131.50    0.503   273.33
2132.50    0.493   273.54
2133.50    0.484   273.76
2134.50    0.474   273.98
2135.50    0.464   274.22
2136.50    0.453   274.46
2137.50    0.442   274.72






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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 15:07:30



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