Double Star Calculator - Orbit

Orbital Elements for STF2294
WDS: STF2294 WDS ID/Discoverer
P: 344.837 Orbital period (years)
a: 0.732 Semi-major axis (arcseconds)
i: 101.6 Inclination (degrees)
Ω: 91.1 Longitude of ascending node (degrees)
T: 1890.086 Epoch of periastron passage (year)
e: 0.935 Eccentricity
ω: 173.8 Longitude of periastron (degrees)
Start-Year: 1852.5815 Year
End-Year: 2197.4184999999998 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2294
Position: 181433.68+001032.9 Epoch-2000 right ascension and declination
WDS-ID: 18146+0011 WDS designation
Discoverer Code: STF2294 Discover designation and components
ADS number: 11186 Aitken Double Star catalog
HD number: 167278 HD catalog number
Hipparcos number: 89393 Hipparcos catalog number
V1: 8.22 Magnitude of the primary
V2: 8.55 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 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: Sca2015b Reference

Double Star Orbit for STF2294



WDS 6th Orbit including measures of STF2294

-- 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 STF2294
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.357    93.10
--------------------------
1852.58    0.743    88.31
1853.58    0.730    88.23
1854.58    0.717    88.16
1855.58    0.704    88.08
1856.58    0.691    87.99
1857.58    0.677    87.91
1858.58    0.663    87.82
1859.58    0.649    87.73
1860.58    0.635    87.63
1861.58    0.620    87.53
1862.58    0.605    87.42
1863.58    0.589    87.31
1864.58    0.574    87.19
1865.58    0.558    87.07
1866.58    0.541    86.94
1867.58    0.525    86.80
1868.58    0.507    86.65
1869.58    0.490    86.49
1870.58    0.472    86.31
1871.58    0.453    86.13
1872.58    0.435    85.92
1873.58    0.415    85.70
1874.58    0.395    85.46
1875.58    0.374    85.19
1876.58    0.353    84.89
1877.58    0.331    84.55
1878.58    0.308    84.16
1879.58    0.285    83.70
1880.58    0.260    83.17
1881.58    0.235    82.51
1882.58    0.208    81.70
1883.58    0.180    80.63
1884.58    0.150    79.15
1885.58    0.118    76.89
1886.58    0.084    72.88
1887.58    0.048    63.02
1888.58    0.017     7.57
1889.58    0.038   283.19
1890.58    0.045   263.43
1891.58    0.024   226.03
1892.58    0.029   145.73
1893.58    0.057   121.47
1894.58    0.087   113.50
1895.58    0.116   109.54
1896.58    0.143   107.13
1897.58    0.169   105.48
1898.58    0.194   104.27
1899.58    0.218   103.33
1900.58    0.241   102.57
1901.58    0.264   101.94
1902.58    0.285   101.41
1903.58    0.306   100.96
1904.58    0.327   100.56
1905.58    0.347   100.21
1906.58    0.366    99.89
1907.58    0.385    99.61
1908.58    0.403    99.35
1909.58    0.421    99.12
1910.58    0.439    98.90
1911.58    0.456    98.70
1912.58    0.473    98.52
1913.58    0.489    98.35
1914.58    0.505    98.18
1915.58    0.521    98.03
1916.58    0.536    97.89
1917.58    0.552    97.76
1918.58    0.566    97.63
1919.58    0.581    97.51
1920.58    0.595    97.39
1921.58    0.610    97.28
1922.58    0.623    97.18
1923.58    0.637    97.08
1924.58    0.650    96.98
1925.58    0.664    96.89
1926.58    0.677    96.80
1927.58    0.689    96.71
1928.58    0.702    96.63
1929.58    0.714    96.55
1930.58    0.727    96.47
1931.58    0.739    96.40
1932.58    0.750    96.33
1933.58    0.762    96.26
1934.58    0.774    96.19
1935.58    0.785    96.13
1936.58    0.796    96.06
1937.58    0.807    96.00
1938.58    0.818    95.94
1939.58    0.829    95.88
1940.58    0.839    95.82
1941.58    0.850    95.77
1942.58    0.860    95.71
1943.58    0.870    95.66
1944.58    0.880    95.61
1945.58    0.890    95.56
1946.58    0.899    95.51
1947.58    0.909    95.46
1948.58    0.918    95.41
1949.58    0.928    95.36
1950.58    0.937    95.32
1951.58    0.946    95.27
1952.58    0.955    95.23
1953.58    0.964    95.18
1954.58    0.972    95.14
1955.58    0.981    95.10
1956.58    0.989    95.06
1957.58    0.998    95.02
1958.58    1.006    94.98
1959.58    1.014    94.94
1960.58    1.022    94.90
1961.58    1.030    94.86
1962.58    1.038    94.83
1963.58    1.046    94.79
1964.58    1.053    94.75
1965.58    1.061    94.72
1966.58    1.068    94.68
1967.58    1.075    94.65
1968.58    1.083    94.61
1969.58    1.090    94.58
1970.58    1.097    94.55
1971.58    1.104    94.51
1972.58    1.110    94.48
1973.58    1.117    94.45
1974.58    1.124    94.42
1975.58    1.130    94.38
1976.58    1.137    94.35
1977.58    1.143    94.32
1978.58    1.149    94.29
1979.58    1.156    94.26
1980.58    1.162    94.23
1981.58    1.168    94.20
1982.58    1.174    94.17
1983.58    1.180    94.15
1984.58    1.185    94.12
1985.58    1.191    94.09
1986.58    1.197    94.06
1987.58    1.202    94.03
1988.58    1.208    94.01
1989.58    1.213    93.98
1990.58    1.218    93.95
1991.58    1.223    93.92
1992.58    1.228    93.90
1993.58    1.233    93.87
1994.58    1.238    93.85
1995.58    1.243    93.82
1996.58    1.248    93.79
1997.58    1.253    93.77
1998.58    1.257    93.74
1999.58    1.262    93.72
2000.58    1.266    93.69
2001.58    1.271    93.67
2002.58    1.275    93.64
2003.58    1.279    93.62
2004.58    1.284    93.59
2005.58    1.288    93.57
2006.58    1.292    93.55
2007.58    1.296    93.52
2008.58    1.300    93.50
2009.58    1.303    93.48
2010.58    1.307    93.45
2011.58    1.311    93.43
2012.58    1.314    93.41
2013.58    1.318    93.38
2014.58    1.321    93.36
2015.58    1.325    93.34
2016.58    1.328    93.31
2017.58    1.331    93.29
2018.58    1.335    93.27
2019.58    1.338    93.25
2020.58    1.341    93.22
2021.58    1.344    93.20
2022.58    1.347    93.18
2023.58    1.349    93.16
2024.58    1.352    93.14
2025.58    1.355    93.11
2026.58    1.358    93.09
2027.58    1.360    93.07
2028.58    1.363    93.05
2029.58    1.365    93.03
2030.58    1.367    93.01
2031.58    1.370    92.99
2032.58    1.372    92.96
2033.58    1.374    92.94
2034.58    1.376    92.92
2035.58    1.378    92.90
2036.58    1.380    92.88
2037.58    1.382    92.86
2038.58    1.384    92.84
2039.58    1.386    92.82
2040.58    1.387    92.80
2041.58    1.389    92.78
2042.58    1.391    92.76
2043.58    1.392    92.74
2044.58    1.394    92.71
2045.58    1.395    92.69
2046.58    1.396    92.67
2047.58    1.398    92.65
2048.58    1.399    92.63
2049.58    1.400    92.61
2050.58    1.401    92.59
2051.58    1.402    92.57
2052.58    1.403    92.55
2053.58    1.404    92.53
2054.58    1.404    92.51
2055.58    1.405    92.49
2056.58    1.406    92.47
2057.58    1.406    92.45
2058.58    1.407    92.43
2059.58    1.407    92.41
2060.58    1.408    92.39
2061.58    1.408    92.37
2062.58    1.408    92.35
2063.58    1.409    92.33
2064.58    1.409    92.31
2065.58    1.409    92.29
2066.58    1.409    92.27
2067.58    1.409    92.25
2068.58    1.409    92.23
2069.58    1.409    92.21
2070.58    1.408    92.19
2071.58    1.408    92.17
2072.58    1.408    92.15
2073.58    1.407    92.13
2074.58    1.407    92.11
2075.58    1.406    92.09
2076.58    1.406    92.07
2077.58    1.405    92.05
2078.58    1.404    92.03
2079.58    1.403    92.01
2080.58    1.402    91.99
2081.58    1.402    91.97
2082.58    1.401    91.95
2083.58    1.399    91.93
2084.58    1.398    91.91
2085.58    1.397    91.89
2086.58    1.396    91.87
2087.58    1.394    91.84
2088.58    1.393    91.82
2089.58    1.392    91.80
2090.58    1.390    91.78
2091.58    1.388    91.76
2092.58    1.387    91.74
2093.58    1.385    91.72
2094.58    1.383    91.70
2095.58    1.381    91.68
2096.58    1.379    91.66
2097.58    1.377    91.64
2098.58    1.375    91.62
2099.58    1.373    91.59
2100.58    1.371    91.57
2101.58    1.369    91.55
2102.58    1.366    91.53
2103.58    1.364    91.51
2104.58    1.361    91.49
2105.58    1.359    91.47
2106.58    1.356    91.44
2107.58    1.353    91.42
2108.58    1.351    91.40
2109.58    1.348    91.38
2110.58    1.345    91.36
2111.58    1.342    91.34
2112.58    1.339    91.31
2113.58    1.336    91.29
2114.58    1.332    91.27
2115.58    1.329    91.25
2116.58    1.326    91.22
2117.58    1.322    91.20
2118.58    1.319    91.18
2119.58    1.315    91.15
2120.58    1.312    91.13
2121.58    1.308    91.11
2122.58    1.304    91.08
2123.58    1.300    91.06
2124.58    1.296    91.04
2125.58    1.292    91.01
2126.58    1.288    90.99
2127.58    1.284    90.97
2128.58    1.280    90.94
2129.58    1.275    90.92
2130.58    1.271    90.89
2131.58    1.266    90.87
2132.58    1.262    90.84
2133.58    1.257    90.82
2134.58    1.252    90.79
2135.58    1.247    90.77
2136.58    1.242    90.74
2137.58    1.237    90.71
2138.58    1.232    90.69
2139.58    1.227    90.66
2140.58    1.222    90.64
2141.58    1.217    90.61
2142.58    1.211    90.58
2143.58    1.206    90.55
2144.58    1.200    90.53
2145.58    1.194    90.50
2146.58    1.188    90.47
2147.58    1.183    90.44
2148.58    1.177    90.41
2149.58    1.171    90.38
2150.58    1.164    90.36
2151.58    1.158    90.33
2152.58    1.152    90.30
2153.58    1.145    90.27
2154.58    1.139    90.24
2155.58    1.132    90.20
2156.58    1.125    90.17
2157.58    1.118    90.14
2158.58    1.112    90.11
2159.58    1.104    90.08
2160.58    1.097    90.04
2161.58    1.090    90.01
2162.58    1.083    89.98
2163.58    1.075    89.94
2164.58    1.068    89.91
2165.58    1.060    89.87
2166.58    1.052    89.84
2167.58    1.044    89.80
2168.58    1.036    89.76
2169.58    1.028    89.73
2170.58    1.020    89.69
2171.58    1.011    89.65
2172.58    1.003    89.61
2173.58    0.994    89.57
2174.58    0.985    89.53
2175.58    0.976    89.49
2176.58    0.967    89.45
2177.58    0.958    89.40
2178.58    0.949    89.36
2179.58    0.939    89.31
2180.58    0.929    89.27
2181.58    0.920    89.22
2182.58    0.910    89.17
2183.58    0.900    89.12
2184.58    0.890    89.08
2185.58    0.879    89.02
2186.58    0.869    88.97
2187.58    0.858    88.92
2188.58    0.847    88.86
2189.58    0.836    88.81
2190.58    0.825    88.75
2191.58    0.813    88.69
2192.58    0.802    88.63
2193.58    0.790    88.57
2194.58    0.778    88.50
2195.58    0.766    88.43
2196.58    0.754    88.36






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 17:49:29



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