Double Star Calculator - Orbit

Orbital Elements for STF963AB
WDS: STF963AB WDS ID/Discoverer
P: 316.200 Orbital period (years)
a: 0.614 Semi-major axis (arcseconds)
i: 64.7 Inclination (degrees)
Ω: 51.0 Longitude of ascending node (degrees)
T: 1961.990 Epoch of periastron passage (year)
e: 0.441 Eccentricity
ω: 170.3 Longitude of periastron (degrees)
Start-Year: 1866.9 Year
End-Year: 2183.1 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF963AB
Position: 065305.06+592655.2 Epoch-2000 right ascension and declination
WDS-ID: 06531+5927 WDS designation
Discoverer Code: STF963AB Discover designation and components
ADS number: 5514 Aitken Double Star catalog
HD number: 49618 HD catalog number
Hipparcos number: 33048 Hipparcos catalog number
V1: 6.00 Magnitude of the primary
V2: 6.53 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 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: Sca2008d Reference

Double Star Orbit for STF963AB



WDS 6th Orbit including measures of STF963AB

-- 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 STF963AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.367     6.91
--------------------------
1866.90    0.726    61.77
1867.90    0.721    62.09
1868.90    0.714    62.41
1869.90    0.708    62.73
1870.90    0.702    63.06
1871.90    0.695    63.40
1872.90    0.689    63.74
1873.90    0.682    64.09
1874.90    0.675    64.45
1875.90    0.669    64.82
1876.90    0.662    65.19
1877.90    0.654    65.57
1878.90    0.647    65.96
1879.90    0.640    66.36
1880.90    0.632    66.76
1881.90    0.625    67.18
1882.90    0.617    67.61
1883.90    0.609    68.04
1884.90    0.601    68.49
1885.90    0.593    68.96
1886.90    0.585    69.43
1887.90    0.577    69.92
1888.90    0.568    70.42
1889.90    0.560    70.94
1890.90    0.551    71.47
1891.90    0.542    72.02
1892.90    0.533    72.59
1893.90    0.525    73.18
1894.90    0.515    73.79
1895.90    0.506    74.42
1896.90    0.497    75.07
1897.90    0.488    75.75
1898.90    0.478    76.46
1899.90    0.469    77.19
1900.90    0.459    77.96
1901.90    0.450    78.75
1902.90    0.440    79.59
1903.90    0.430    80.46
1904.90    0.420    81.37
1905.90    0.410    82.32
1906.90    0.400    83.32
1907.90    0.390    84.38
1908.90    0.380    85.49
1909.90    0.370    86.66
1910.90    0.360    87.89
1911.90    0.350    89.20
1912.90    0.340    90.58
1913.90    0.330    92.04
1914.90    0.320    93.60
1915.90    0.310    95.26
1916.90    0.301    97.02
1917.90    0.291    98.90
1918.90    0.282   100.91
1919.90    0.273   103.05
1920.90    0.264   105.35
1921.90    0.255   107.80
1922.90    0.247   110.42
1923.90    0.239   113.22
1924.90    0.231   116.21
1925.90    0.224   119.39
1926.90    0.218   122.77
1927.90    0.212   126.34
1928.90    0.207   130.11
1929.90    0.202   134.05
1930.90    0.199   138.16
1931.90    0.196   142.39
1932.90    0.194   146.72
1933.90    0.193   151.10
1934.90    0.193   155.51
1935.90    0.195   159.89
1936.90    0.196   164.20
1937.90    0.199   168.41
1938.90    0.203   172.48
1939.90    0.207   176.40
1940.90    0.212   180.15
1941.90    0.218   183.71
1942.90    0.224   187.09
1943.90    0.230   190.28
1944.90    0.237   193.30
1945.90    0.244   196.14
1946.90    0.251   198.82
1947.90    0.259   201.35
1948.90    0.266   203.74
1949.90    0.273   206.00
1950.90    0.281   208.15
1951.90    0.288   210.19
1952.90    0.295   212.13
1953.90    0.301   213.99
1954.90    0.307   215.76
1955.90    0.313   217.47
1956.90    0.319   219.12
1957.90    0.324   220.72
1958.90    0.328   222.27
1959.90    0.332   223.77
1960.90    0.336   225.25
1961.90    0.339   226.69
1962.90    0.341   228.12
1963.90    0.343   229.52
1964.90    0.345   230.91
1965.90    0.345   232.29
1966.90    0.346   233.67
1967.90    0.345   235.05
1968.90    0.344   236.43
1969.90    0.343   237.83
1970.90    0.341   239.23
1971.90    0.339   240.66
1972.90    0.336   242.11
1973.90    0.333   243.58
1974.90    0.329   245.09
1975.90    0.325   246.63
1976.90    0.320   248.21
1977.90    0.316   249.84
1978.90    0.311   251.51
1979.90    0.306   253.25
1980.90    0.300   255.04
1981.90    0.295   256.89
1982.90    0.289   258.82
1983.90    0.284   260.83
1984.90    0.278   262.91
1985.90    0.273   265.08
1986.90    0.267   267.34
1987.90    0.262   269.69
1988.90    0.257   272.14
1989.90    0.252   274.69
1990.90    0.247   277.34
1991.90    0.243   280.09
1992.90    0.238   282.93
1993.90    0.235   285.87
1994.90    0.232   288.90
1995.90    0.229   292.01
1996.90    0.226   295.19
1997.90    0.225   298.42
1998.90    0.224   301.70
1999.90    0.223   305.01
2000.90    0.223   308.32
2001.90    0.223   311.63
2002.90    0.225   314.91
2003.90    0.226   318.16
2004.90    0.229   321.34
2005.90    0.231   324.45
2006.90    0.235   327.48
2007.90    0.239   330.42
2008.90    0.243   333.25
2009.90    0.248   335.99
2010.90    0.253   338.61
2011.90    0.259   341.12
2012.90    0.265   343.53
2013.90    0.271   345.82
2014.90    0.278   348.01
2015.90    0.284   350.09
2016.90    0.292   352.08
2017.90    0.299   353.97
2018.90    0.306   355.76
2019.90    0.314   357.48
2020.90    0.322   359.11
2021.90    0.330     0.66
2022.90    0.338     2.13
2023.90    0.346     3.54
2024.90    0.354     4.89
2025.90    0.362     6.17
2026.90    0.371     7.40
2027.90    0.379     8.57
2028.90    0.387     9.69
2029.90    0.396    10.76
2030.90    0.404    11.79
2031.90    0.413    12.78
2032.90    0.421    13.72
2033.90    0.430    14.63
2034.90    0.438    15.51
2035.90    0.446    16.35
2036.90    0.455    17.16
2037.90    0.463    17.94
2038.90    0.471    18.70
2039.90    0.480    19.42
2040.90    0.488    20.13
2041.90    0.496    20.81
2042.90    0.504    21.46
2043.90    0.512    22.10
2044.90    0.520    22.72
2045.90    0.528    23.32
2046.90    0.536    23.90
2047.90    0.544    24.46
2048.90    0.552    25.01
2049.90    0.559    25.55
2050.90    0.567    26.07
2051.90    0.574    26.57
2052.90    0.582    27.06
2053.90    0.589    27.54
2054.90    0.597    28.01
2055.90    0.604    28.47
2056.90    0.611    28.92
2057.90    0.618    29.35
2058.90    0.625    29.78
2059.90    0.632    30.20
2060.90    0.639    30.60
2061.90    0.645    31.00
2062.90    0.652    31.39
2063.90    0.659    31.78
2064.90    0.665    32.15
2065.90    0.671    32.52
2066.90    0.678    32.88
2067.90    0.684    33.24
2068.90    0.690    33.59
2069.90    0.696    33.93
2070.90    0.702    34.27
2071.90    0.708    34.60
2072.90    0.714    34.92
2073.90    0.719    35.24
2074.90    0.725    35.56
2075.90    0.730    35.87
2076.90    0.736    36.18
2077.90    0.741    36.48
2078.90    0.746    36.78
2079.90    0.751    37.07
2080.90    0.756    37.36
2081.90    0.761    37.65
2082.90    0.766    37.93
2083.90    0.771    38.21
2084.90    0.775    38.48
2085.90    0.780    38.76
2086.90    0.784    39.03
2087.90    0.788    39.29
2088.90    0.793    39.56
2089.90    0.797    39.82
2090.90    0.801    40.07
2091.90    0.805    40.33
2092.90    0.809    40.58
2093.90    0.812    40.83
2094.90    0.816    41.08
2095.90    0.819    41.33
2096.90    0.823    41.57
2097.90    0.826    41.81
2098.90    0.829    42.05
2099.90    0.833    42.29
2100.90    0.836    42.53
2101.90    0.839    42.76
2102.90    0.841    43.00
2103.90    0.844    43.23
2104.90    0.847    43.46
2105.90    0.849    43.69
2106.90    0.852    43.92
2107.90    0.854    44.14
2108.90    0.856    44.37
2109.90    0.858    44.59
2110.90    0.861    44.81
2111.90    0.862    45.04
2112.90    0.864    45.26
2113.90    0.866    45.48
2114.90    0.868    45.70
2115.90    0.869    45.91
2116.90    0.871    46.13
2117.90    0.872    46.35
2118.90    0.873    46.57
2119.90    0.874    46.78
2120.90    0.875    47.00
2121.90    0.876    47.21
2122.90    0.877    47.43
2123.90    0.878    47.64
2124.90    0.878    47.85
2125.90    0.879    48.07
2126.90    0.879    48.28
2127.90    0.879    48.49
2128.90    0.880    48.70
2129.90    0.880    48.92
2130.90    0.880    49.13
2131.90    0.880    49.34
2132.90    0.879    49.56
2133.90    0.879    49.77
2134.90    0.879    49.98
2135.90    0.878    50.20
2136.90    0.877    50.41
2137.90    0.877    50.62
2138.90    0.876    50.84
2139.90    0.875    51.05
2140.90    0.874    51.27
2141.90    0.872    51.48
2142.90    0.871    51.70
2143.90    0.870    51.92
2144.90    0.868    52.14
2145.90    0.867    52.36
2146.90    0.865    52.57
2147.90    0.863    52.80
2148.90    0.861    53.02
2149.90    0.859    53.24
2150.90    0.857    53.46
2151.90    0.854    53.69
2152.90    0.852    53.91
2153.90    0.850    54.14
2154.90    0.847    54.37
2155.90    0.844    54.60
2156.90    0.841    54.83
2157.90    0.838    55.07
2158.90    0.835    55.30
2159.90    0.832    55.54
2160.90    0.829    55.78
2161.90    0.825    56.02
2162.90    0.822    56.26
2163.90    0.818    56.50
2164.90    0.815    56.75
2165.90    0.811    57.00
2166.90    0.807    57.25
2167.90    0.803    57.51
2168.90    0.799    57.76
2169.90    0.794    58.02
2170.90    0.790    58.29
2171.90    0.785    58.55
2172.90    0.781    58.82
2173.90    0.776    59.09
2174.90    0.771    59.37
2175.90    0.766    59.65
2176.90    0.761    59.93
2177.90    0.756    60.21
2178.90    0.750    60.50
2179.90    0.745    60.80
2180.90    0.739    61.10
2181.90    0.733    61.40
2182.90    0.728    61.71






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 15:52:20



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