Double Star Calculator - Orbit

Orbital Elements for STT309
WDS: STT309 WDS ID/Discoverer
P: 345.000 Orbital period (years)
a: 0.418 Semi-major axis (arcseconds)
i: 61.1 Inclination (degrees)
Ω: 44.8 Longitude of ascending node (degrees)
T: 1795.000 Epoch of periastron passage (year)
e: 0.445 Eccentricity
ω: 66.7 Longitude of periastron (degrees)
Start-Year: 1852.5 Year
End-Year: 2197.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT309
Position: 161914.48+413933.6 Epoch-2000 right ascension and declination
WDS-ID: 16192+4140 WDS designation
Discoverer Code: STT309 Discover designation and components
ADS number: 10006 Aitken Double Star catalog
HD number: 147275 HD catalog number
Hipparcos number: 79957 Hipparcos catalog number
V1: 8.74 Magnitude of the primary
V2: 8.97 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: USN2002 Reference

Double Star Orbit for STT309



WDS 6th Orbit including measures of STT309

-- 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 STT309
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.270   324.54
--------------------------
1852.50    0.403   224.29
1853.50    0.407   224.77
1854.50    0.410   225.24
1855.50    0.413   225.71
1856.50    0.417   226.17
1857.50    0.420   226.62
1858.50    0.423   227.06
1859.50    0.425   227.50
1860.50    0.428   227.94
1861.50    0.431   228.36
1862.50    0.433   228.79
1863.50    0.436   229.20
1864.50    0.438   229.62
1865.50    0.440   230.03
1866.50    0.443   230.43
1867.50    0.445   230.83
1868.50    0.447   231.23
1869.50    0.448   231.62
1870.50    0.450   232.01
1871.50    0.452   232.40
1872.50    0.453   232.79
1873.50    0.455   233.17
1874.50    0.456   233.55
1875.50    0.458   233.93
1876.50    0.459   234.30
1877.50    0.460   234.68
1878.50    0.461   235.05
1879.50    0.462   235.42
1880.50    0.463   235.79
1881.50    0.464   236.16
1882.50    0.465   236.52
1883.50    0.465   236.89
1884.50    0.466   237.25
1885.50    0.467   237.61
1886.50    0.467   237.98
1887.50    0.467   238.34
1888.50    0.468   238.70
1889.50    0.468   239.06
1890.50    0.468   239.42
1891.50    0.468   239.78
1892.50    0.469   240.14
1893.50    0.469   240.50
1894.50    0.469   240.86
1895.50    0.468   241.22
1896.50    0.468   241.58
1897.50    0.468   241.94
1898.50    0.468   242.30
1899.50    0.468   242.66
1900.50    0.467   243.02
1901.50    0.467   243.38
1902.50    0.466   243.74
1903.50    0.466   244.11
1904.50    0.465   244.47
1905.50    0.464   244.84
1906.50    0.464   245.20
1907.50    0.463   245.57
1908.50    0.462   245.94
1909.50    0.461   246.31
1910.50    0.460   246.68
1911.50    0.460   247.05
1912.50    0.459   247.43
1913.50    0.458   247.80
1914.50    0.456   248.18
1915.50    0.455   248.56
1916.50    0.454   248.94
1917.50    0.453   249.33
1918.50    0.452   249.71
1919.50    0.451   250.10
1920.50    0.449   250.49
1921.50    0.448   250.88
1922.50    0.446   251.28
1923.50    0.445   251.67
1924.50    0.444   252.07
1925.50    0.442   252.47
1926.50    0.441   252.88
1927.50    0.439   253.29
1928.50    0.437   253.70
1929.50    0.436   254.11
1930.50    0.434   254.53
1931.50    0.433   254.95
1932.50    0.431   255.37
1933.50    0.429   255.80
1934.50    0.427   256.23
1935.50    0.426   256.66
1936.50    0.424   257.10
1937.50    0.422   257.54
1938.50    0.420   257.99
1939.50    0.418   258.44
1940.50    0.416   258.89
1941.50    0.414   259.35
1942.50    0.412   259.81
1943.50    0.410   260.28
1944.50    0.408   260.75
1945.50    0.406   261.22
1946.50    0.404   261.70
1947.50    0.402   262.19
1948.50    0.400   262.68
1949.50    0.398   263.17
1950.50    0.396   263.67
1951.50    0.394   264.18
1952.50    0.392   264.69
1953.50    0.390   265.21
1954.50    0.388   265.73
1955.50    0.385   266.26
1956.50    0.383   266.79
1957.50    0.381   267.33
1958.50    0.379   267.88
1959.50    0.377   268.43
1960.50    0.375   268.99
1961.50    0.372   269.55
1962.50    0.370   270.13
1963.50    0.368   270.71
1964.50    0.366   271.29
1965.50    0.364   271.89
1966.50    0.361   272.49
1967.50    0.359   273.09
1968.50    0.357   273.71
1969.50    0.355   274.33
1970.50    0.352   274.96
1971.50    0.350   275.60
1972.50    0.348   276.25
1973.50    0.346   276.91
1974.50    0.344   277.57
1975.50    0.342   278.24
1976.50    0.339   278.92
1977.50    0.337   279.61
1978.50    0.335   280.31
1979.50    0.333   281.02
1980.50    0.331   281.73
1981.50    0.329   282.46
1982.50    0.327   283.19
1983.50    0.325   283.94
1984.50    0.323   284.69
1985.50    0.321   285.45
1986.50    0.319   286.23
1987.50    0.317   287.01
1988.50    0.315   287.80
1989.50    0.313   288.60
1990.50    0.311   289.41
1991.50    0.309   290.24
1992.50    0.307   291.07
1993.50    0.305   291.91
1994.50    0.304   292.76
1995.50    0.302   293.62
1996.50    0.300   294.49
1997.50    0.298   295.37
1998.50    0.297   296.26
1999.50    0.295   297.17
2000.50    0.294   298.08
2001.50    0.292   299.00
2002.50    0.291   299.93
2003.50    0.289   300.87
2004.50    0.288   301.81
2005.50    0.286   302.77
2006.50    0.285   303.74
2007.50    0.284   304.71
2008.50    0.283   305.70
2009.50    0.281   306.69
2010.50    0.280   307.69
2011.50    0.279   308.70
2012.50    0.278   309.72
2013.50    0.277   310.74
2014.50    0.276   311.77
2015.50    0.275   312.81
2016.50    0.275   313.85
2017.50    0.274   314.90
2018.50    0.273   315.95
2019.50    0.273   317.01
2020.50    0.272   318.08
2021.50    0.272   319.14
2022.50    0.271   320.22
2023.50    0.271   321.29
2024.50    0.270   322.37
2025.50    0.270   323.45
2026.50    0.270   324.54
2027.50    0.270   325.62
2028.50    0.269   326.71
2029.50    0.269   327.79
2030.50    0.269   328.88
2031.50    0.269   329.97
2032.50    0.270   331.05
2033.50    0.270   332.14
2034.50    0.270   333.22
2035.50    0.270   334.30
2036.50    0.271   335.38
2037.50    0.271   336.46
2038.50    0.271   337.53
2039.50    0.272   338.60
2040.50    0.272   339.67
2041.50    0.273   340.73
2042.50    0.274   341.78
2043.50    0.274   342.84
2044.50    0.275   343.88
2045.50    0.276   344.92
2046.50    0.277   345.96
2047.50    0.277   346.99
2048.50    0.278   348.01
2049.50    0.279   349.02
2050.50    0.280   350.03
2051.50    0.281   351.03
2052.50    0.282   352.03
2053.50    0.283   353.02
2054.50    0.284   354.00
2055.50    0.285   354.97
2056.50    0.286   355.94
2057.50    0.288   356.89
2058.50    0.289   357.85
2059.50    0.290   358.79
2060.50    0.291   359.72
2061.50    0.292     0.65
2062.50    0.293     1.57
2063.50    0.295     2.48
2064.50    0.296     3.39
2065.50    0.297     4.29
2066.50    0.298     5.18
2067.50    0.299     6.06
2068.50    0.301     6.94
2069.50    0.302     7.81
2070.50    0.303     8.67
2071.50    0.304     9.53
2072.50    0.305    10.38
2073.50    0.306    11.22
2074.50    0.307    12.06
2075.50    0.308    12.90
2076.50    0.309    13.72
2077.50    0.310    14.54
2078.50    0.311    15.36
2079.50    0.312    16.17
2080.50    0.313    16.98
2081.50    0.314    17.78
2082.50    0.315    18.58
2083.50    0.315    19.37
2084.50    0.316    20.16
2085.50    0.317    20.95
2086.50    0.317    21.74
2087.50    0.318    22.52
2088.50    0.318    23.30
2089.50    0.318    24.08
2090.50    0.319    24.86
2091.50    0.319    25.64
2092.50    0.319    26.42
2093.50    0.319    27.19
2094.50    0.318    27.97
2095.50    0.318    28.75
2096.50    0.318    29.53
2097.50    0.317    30.31
2098.50    0.317    31.10
2099.50    0.316    31.89
2100.50    0.315    32.68
2101.50    0.314    33.48
2102.50    0.313    34.28
2103.50    0.311    35.09
2104.50    0.310    35.91
2105.50    0.308    36.74
2106.50    0.306    37.57
2107.50    0.304    38.42
2108.50    0.302    39.27
2109.50    0.300    40.14
2110.50    0.297    41.03
2111.50    0.295    41.93
2112.50    0.292    42.85
2113.50    0.289    43.78
2114.50    0.285    44.74
2115.50    0.282    45.72
2116.50    0.278    46.73
2117.50    0.274    47.77
2118.50    0.270    48.84
2119.50    0.265    49.94
2120.50    0.260    51.08
2121.50    0.256    52.27
2122.50    0.250    53.50
2123.50    0.245    54.79
2124.50    0.239    56.13
2125.50    0.234    57.54
2126.50    0.228    59.03
2127.50    0.221    60.59
2128.50    0.215    62.25
2129.50    0.208    64.01
2130.50    0.202    65.89
2131.50    0.195    67.90
2132.50    0.188    70.05
2133.50    0.181    72.37
2134.50    0.174    74.88
2135.50    0.167    77.59
2136.50    0.160    80.54
2137.50    0.153    83.75
2138.50    0.147    87.25
2139.50    0.141    91.06
2140.50    0.135    95.21
2141.50    0.130    99.71
2142.50    0.125   104.57
2143.50    0.121   109.77
2144.50    0.118   115.27
2145.50    0.116   121.02
2146.50    0.115   126.95
2147.50    0.115   132.93
2148.50    0.116   138.88
2149.50    0.118   144.68
2150.50    0.121   150.25
2151.50    0.124   155.52
2152.50    0.129   160.45
2153.50    0.134   165.02
2154.50    0.140   169.22
2155.50    0.146   173.08
2156.50    0.153   176.62
2157.50    0.160   179.85
2158.50    0.167   182.80
2159.50    0.174   185.51
2160.50    0.182   187.99
2161.50    0.190   190.28
2162.50    0.197   192.39
2163.50    0.205   194.34
2164.50    0.213   196.15
2165.50    0.220   197.83
2166.50    0.228   199.40
2167.50    0.236   200.87
2168.50    0.243   202.25
2169.50    0.250   203.54
2170.50    0.258   204.77
2171.50    0.265   205.92
2172.50    0.272   207.02
2173.50    0.279   208.06
2174.50    0.285   209.05
2175.50    0.292   210.00
2176.50    0.299   210.90
2177.50    0.305   211.77
2178.50    0.311   212.60
2179.50    0.317   213.40
2180.50    0.323   214.17
2181.50    0.329   214.91
2182.50    0.335   215.63
2183.50    0.340   216.32
2184.50    0.345   217.00
2185.50    0.351   217.65
2186.50    0.356   218.28
2187.50    0.361   218.89
2188.50    0.366   219.49
2189.50    0.370   220.07
2190.50    0.375   220.64
2191.50    0.379   221.20
2192.50    0.384   221.74
2193.50    0.388   222.27
2194.50    0.392   222.79
2195.50    0.396   223.30
2196.50    0.399   223.80






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 17:25:00



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