Double Star Calculator - Orbit

Orbital Elements for STT50AB
WDS: STT50AB WDS ID/Discoverer
P: 309.000 Orbital period (years)
a: 1.02 Semi-major axis (arcseconds)
i: 135.9 Inclination (degrees)
Ω: 14.3 Longitude of ascending node (degrees)
T: 2087.000 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 5.6 Longitude of periastron (degrees)
Start-Year: 1870.5 Year
End-Year: 2179.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT50AB
Position: 031239.10+713320.7 Epoch-2000 right ascension and declination
WDS-ID: 03127+7133 WDS designation
Discoverer Code: STT50AB Discover designation and components
ADS number: 2377 Aitken Double Star catalog
HD number: 19475 HD catalog number
Hipparcos number: 14944 Hipparcos catalog number
V1: 8.43 Magnitude of the primary
V2: 8.46 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Sca2012b Reference

Double Star Orbit for STT50AB



WDS 6th Orbit including measures of STT50AB

-- 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 STT50AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.794   132.46
--------------------------
1870.50    1.177   217.73
1871.50    1.185   217.16
1872.50    1.194   216.59
1873.50    1.202   216.04
1874.50    1.210   215.49
1875.50    1.218   214.95
1876.50    1.226   214.41
1877.50    1.234   213.89
1878.50    1.241   213.37
1879.50    1.248   212.85
1880.50    1.256   212.34
1881.50    1.263   211.84
1882.50    1.270   211.34
1883.50    1.276   210.85
1884.50    1.283   210.36
1885.50    1.290   209.88
1886.50    1.296   209.40
1887.50    1.302   208.93
1888.50    1.308   208.46
1889.50    1.314   208.00
1890.50    1.320   207.54
1891.50    1.325   207.08
1892.50    1.331   206.63
1893.50    1.336   206.18
1894.50    1.341   205.73
1895.50    1.346   205.29
1896.50    1.351   204.85
1897.50    1.356   204.42
1898.50    1.360   203.98
1899.50    1.365   203.55
1900.50    1.369   203.13
1901.50    1.373   202.70
1902.50    1.377   202.28
1903.50    1.381   201.86
1904.50    1.384   201.44
1905.50    1.388   201.03
1906.50    1.391   200.62
1907.50    1.394   200.20
1908.50    1.397   199.79
1909.50    1.400   199.39
1910.50    1.403   198.98
1911.50    1.405   198.58
1912.50    1.408   198.17
1913.50    1.410   197.77
1914.50    1.412   197.37
1915.50    1.414   196.97
1916.50    1.416   196.57
1917.50    1.418   196.17
1918.50    1.419   195.78
1919.50    1.420   195.38
1920.50    1.422   194.99
1921.50    1.423   194.59
1922.50    1.424   194.20
1923.50    1.424   193.81
1924.50    1.425   193.41
1925.50    1.426   193.02
1926.50    1.426   192.63
1927.50    1.426   192.23
1928.50    1.426   191.84
1929.50    1.426   191.45
1930.50    1.426   191.06
1931.50    1.425   190.67
1932.50    1.425   190.27
1933.50    1.424   189.88
1934.50    1.423   189.49
1935.50    1.422   189.09
1936.50    1.421   188.70
1937.50    1.420   188.30
1938.50    1.418   187.90
1939.50    1.417   187.51
1940.50    1.415   187.11
1941.50    1.413   186.71
1942.50    1.411   186.31
1943.50    1.409   185.91
1944.50    1.406   185.51
1945.50    1.404   185.10
1946.50    1.401   184.70
1947.50    1.399   184.29
1948.50    1.396   183.88
1949.50    1.393   183.47
1950.50    1.389   183.06
1951.50    1.386   182.64
1952.50    1.383   182.23
1953.50    1.379   181.81
1954.50    1.375   181.39
1955.50    1.371   180.97
1956.50    1.367   180.54
1957.50    1.363   180.11
1958.50    1.359   179.68
1959.50    1.354   179.25
1960.50    1.350   178.81
1961.50    1.345   178.37
1962.50    1.340   177.93
1963.50    1.335   177.48
1964.50    1.330   177.03
1965.50    1.325   176.58
1966.50    1.319   176.13
1967.50    1.314   175.66
1968.50    1.308   175.20
1969.50    1.302   174.73
1970.50    1.296   174.26
1971.50    1.290   173.78
1972.50    1.284   173.30
1973.50    1.277   172.81
1974.50    1.271   172.32
1975.50    1.264   171.83
1976.50    1.257   171.32
1977.50    1.250   170.82
1978.50    1.243   170.30
1979.50    1.236   169.78
1980.50    1.229   169.26
1981.50    1.222   168.73
1982.50    1.214   168.19
1983.50    1.206   167.65
1984.50    1.199   167.09
1985.50    1.191   166.53
1986.50    1.183   165.97
1987.50    1.174   165.39
1988.50    1.166   164.81
1989.50    1.158   164.22
1990.50    1.149   163.62
1991.50    1.141   163.01
1992.50    1.132   162.39
1993.50    1.123   161.77
1994.50    1.114   161.13
1995.50    1.105   160.48
1996.50    1.096   159.82
1997.50    1.087   159.15
1998.50    1.078   158.47
1999.50    1.068   157.78
2000.50    1.059   157.07
2001.50    1.049   156.36
2002.50    1.039   155.62
2003.50    1.030   154.88
2004.50    1.020   154.12
2005.50    1.010   153.34
2006.50    1.000   152.55
2007.50    0.990   151.75
2008.50    0.980   150.93
2009.50    0.970   150.09
2010.50    0.959   149.23
2011.50    0.949   148.35
2012.50    0.939   147.46
2013.50    0.928   146.54
2014.50    0.918   145.61
2015.50    0.908   144.65
2016.50    0.897   143.67
2017.50    0.887   142.67
2018.50    0.876   141.64
2019.50    0.866   140.59
2020.50    0.855   139.51
2021.50    0.845   138.41
2022.50    0.835   137.28
2023.50    0.824   136.12
2024.50    0.814   134.93
2025.50    0.804   133.71
2026.50    0.794   132.46
2027.50    0.784   131.18
2028.50    0.774   129.86
2029.50    0.764   128.51
2030.50    0.754   127.12
2031.50    0.744   125.70
2032.50    0.735   124.24
2033.50    0.726   122.75
2034.50    0.716   121.21
2035.50    0.708   119.64
2036.50    0.699   118.03
2037.50    0.690   116.37
2038.50    0.682   114.68
2039.50    0.674   112.94
2040.50    0.666   111.16
2041.50    0.659   109.35
2042.50    0.652   107.49
2043.50    0.645   105.59
2044.50    0.638   103.65
2045.50    0.632   101.67
2046.50    0.626    99.65
2047.50    0.621    97.60
2048.50    0.616    95.51
2049.50    0.611    93.39
2050.50    0.607    91.24
2051.50    0.603    89.06
2052.50    0.599    86.85
2053.50    0.596    84.62
2054.50    0.594    82.36
2055.50    0.592    80.09
2056.50    0.590    77.81
2057.50    0.588    75.51
2058.50    0.587    73.20
2059.50    0.587    70.89
2060.50    0.587    68.57
2061.50    0.587    66.25
2062.50    0.587    63.93
2063.50    0.588    61.62
2064.50    0.589    59.31
2065.50    0.590    57.02
2066.50    0.591    54.73
2067.50    0.593    52.46
2068.50    0.595    50.19
2069.50    0.597    47.94
2070.50    0.598    45.71
2071.50    0.600    43.49
2072.50    0.602    41.28
2073.50    0.604    39.09
2074.50    0.606    36.91
2075.50    0.608    34.75
2076.50    0.609    32.59
2077.50    0.611    30.45
2078.50    0.612    28.31
2079.50    0.613    26.19
2080.50    0.614    24.06
2081.50    0.614    21.95
2082.50    0.614    19.83
2083.50    0.614    17.71
2084.50    0.613    15.60
2085.50    0.612    13.47
2086.50    0.611    11.34
2087.50    0.610     9.20
2088.50    0.608     7.05
2089.50    0.606     4.88
2090.50    0.604     2.70
2091.50    0.601     0.50
2092.50    0.598   358.28
2093.50    0.595   356.04
2094.50    0.592   353.77
2095.50    0.588   351.48
2096.50    0.585   349.16
2097.50    0.581   346.82
2098.50    0.578   344.44
2099.50    0.574   342.04
2100.50    0.571   339.61
2101.50    0.568   337.15
2102.50    0.565   334.66
2103.50    0.562   332.15
2104.50    0.559   329.61
2105.50    0.557   327.05
2106.50    0.555   324.47
2107.50    0.554   321.88
2108.50    0.553   319.28
2109.50    0.552   316.66
2110.50    0.552   314.05
2111.50    0.553   311.43
2112.50    0.554   308.82
2113.50    0.555   306.23
2114.50    0.557   303.65
2115.50    0.560   301.09
2116.50    0.563   298.55
2117.50    0.566   296.05
2118.50    0.571   293.58
2119.50    0.575   291.15
2120.50    0.581   288.76
2121.50    0.586   286.42
2122.50    0.593   284.12
2123.50    0.599   281.88
2124.50    0.607   279.68
2125.50    0.614   277.54
2126.50    0.622   275.45
2127.50    0.631   273.42
2128.50    0.639   271.44
2129.50    0.648   269.52
2130.50    0.658   267.64
2131.50    0.667   265.83
2132.50    0.677   264.06
2133.50    0.688   262.35
2134.50    0.698   260.69
2135.50    0.708   259.07
2136.50    0.719   257.51
2137.50    0.730   255.99
2138.50    0.741   254.51
2139.50    0.752   253.08
2140.50    0.764   251.69
2141.50    0.775   250.35
2142.50    0.786   249.04
2143.50    0.798   247.76
2144.50    0.809   246.53
2145.50    0.821   245.33
2146.50    0.832   244.16
2147.50    0.844   243.02
2148.50    0.855   241.92
2149.50    0.867   240.84
2150.50    0.878   239.80
2151.50    0.890   238.77
2152.50    0.901   237.78
2153.50    0.913   236.81
2154.50    0.924   235.87
2155.50    0.935   234.94
2156.50    0.947   234.04
2157.50    0.958   233.16
2158.50    0.969   232.30
2159.50    0.980   231.46
2160.50    0.991   230.64
2161.50    1.002   229.84
2162.50    1.012   229.05
2163.50    1.023   228.28
2164.50    1.034   227.53
2165.50    1.044   226.79
2166.50    1.054   226.06
2167.50    1.064   225.35
2168.50    1.074   224.65
2169.50    1.084   223.97
2170.50    1.094   223.30
2171.50    1.104   222.64
2172.50    1.114   221.99
2173.50    1.123   221.35
2174.50    1.132   220.72
2175.50    1.141   220.10
2176.50    1.151   219.50
2177.50    1.159   218.90
2178.50    1.168   218.31






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 15:08:40



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