Double Star Calculator - Orbit

Orbital Elements for STF367
WDS: STF367 WDS ID/Discoverer
P: 370.108 Orbital period (years)
a: 1.0048 Semi-major axis (arcseconds)
i: 127.821 Inclination (degrees)
Ω: 101.034 Longitude of ascending node (degrees)
T: 1838.187 Epoch of periastron passage (year)
e: 0.4734 Eccentricity
ω: 139.915 Longitude of periastron (degrees)
Start-Year: 1839.94605 Year
End-Year: 2210.05395 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF367
Position: 031402.91+004421.3 Epoch-2000 right ascension and declination
WDS-ID: 03140+0044 WDS designation
Discoverer Code: STF367 Discover designation and components
ADS number: 2416 Aitken Double Star catalog
HD number: 20115 HD catalog number
Hipparcos number: 15058 Hipparcos catalog number
V1: 8.14 Magnitude of the primary
V2: 8.17 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STF367



WDS 6th Orbit including measures of STF367

-- 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 STF367
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.286   127.28
--------------------------
1839.95    0.473   304.00
1840.95    0.483   301.69
1841.95    0.493   299.46
1842.95    0.503   297.32
1843.95    0.512   295.27
1844.95    0.521   293.28
1845.95    0.530   291.36
1846.95    0.538   289.50
1847.95    0.546   287.69
1848.95    0.553   285.93
1849.95    0.560   284.22
1850.95    0.567   282.55
1851.95    0.573   280.92
1852.95    0.578   279.32
1853.95    0.584   277.74
1854.95    0.588   276.20
1855.95    0.593   274.68
1856.95    0.597   273.18
1857.95    0.600   271.70
1858.95    0.604   270.24
1859.95    0.607   268.79
1860.95    0.609   267.35
1861.95    0.611   265.93
1862.95    0.613   264.52
1863.95    0.615   263.11
1864.95    0.617   261.71
1865.95    0.618   260.32
1866.95    0.619   258.93
1867.95    0.620   257.55
1868.95    0.620   256.17
1869.95    0.621   254.79
1870.95    0.621   253.42
1871.95    0.621   252.04
1872.95    0.621   250.67
1873.95    0.621   249.29
1874.95    0.621   247.92
1875.95    0.621   246.55
1876.95    0.621   245.17
1877.95    0.621   243.80
1878.95    0.621   242.42
1879.95    0.621   241.04
1880.95    0.620   239.67
1881.95    0.620   238.29
1882.95    0.620   236.91
1883.95    0.620   235.53
1884.95    0.620   234.15
1885.95    0.620   232.77
1886.95    0.620   231.39
1887.95    0.620   230.01
1888.95    0.621   228.64
1889.95    0.621   227.26
1890.95    0.622   225.89
1891.95    0.622   224.51
1892.95    0.623   223.15
1893.95    0.624   221.78
1894.95    0.625   220.42
1895.95    0.626   219.06
1896.95    0.627   217.71
1897.95    0.628   216.36
1898.95    0.630   215.03
1899.95    0.632   213.69
1900.95    0.633   212.37
1901.95    0.635   211.05
1902.95    0.638   209.74
1903.95    0.640   208.44
1904.95    0.642   207.15
1905.95    0.645   205.87
1906.95    0.647   204.60
1907.95    0.650   203.34
1908.95    0.653   202.09
1909.95    0.656   200.85
1910.95    0.660   199.62
1911.95    0.663   198.41
1912.95    0.667   197.21
1913.95    0.670   196.02
1914.95    0.674   194.85
1915.95    0.678   193.69
1916.95    0.682   192.54
1917.95    0.686   191.41
1918.95    0.691   190.29
1919.95    0.695   189.18
1920.95    0.700   188.09
1921.95    0.704   187.02
1922.95    0.709   185.95
1923.95    0.714   184.91
1924.95    0.719   183.87
1925.95    0.724   182.85
1926.95    0.729   181.85
1927.95    0.734   180.86
1928.95    0.740   179.88
1929.95    0.745   178.92
1930.95    0.751   177.97
1931.95    0.756   177.04
1932.95    0.762   176.12
1933.95    0.768   175.21
1934.95    0.774   174.32
1935.95    0.779   173.44
1936.95    0.785   172.57
1937.95    0.791   171.72
1938.95    0.797   170.88
1939.95    0.803   170.05
1940.95    0.810   169.23
1941.95    0.816   168.43
1942.95    0.822   167.64
1943.95    0.828   166.86
1944.95    0.835   166.09
1945.95    0.841   165.34
1946.95    0.847   164.59
1947.95    0.854   163.86
1948.95    0.860   163.14
1949.95    0.866   162.42
1950.95    0.873   161.72
1951.95    0.879   161.03
1952.95    0.886   160.35
1953.95    0.892   159.68
1954.95    0.899   159.02
1955.95    0.905   158.37
1956.95    0.912   157.72
1957.95    0.918   157.09
1958.95    0.925   156.47
1959.95    0.931   155.85
1960.95    0.938   155.24
1961.95    0.944   154.64
1962.95    0.951   154.05
1963.95    0.957   153.47
1964.95    0.964   152.89
1965.95    0.970   152.33
1966.95    0.977   151.77
1967.95    0.983   151.22
1968.95    0.990   150.67
1969.95    0.996   150.13
1970.95    1.002   149.60
1971.95    1.009   149.08
1972.95    1.015   148.56
1973.95    1.021   148.05
1974.95    1.027   147.54
1975.95    1.034   147.04
1976.95    1.040   146.55
1977.95    1.046   146.06
1978.95    1.052   145.58
1979.95    1.058   145.10
1980.95    1.064   144.63
1981.95    1.070   144.17
1982.95    1.076   143.70
1983.95    1.082   143.25
1984.95    1.088   142.80
1985.95    1.094   142.35
1986.95    1.100   141.91
1987.95    1.106   141.48
1988.95    1.111   141.05
1989.95    1.117   140.62
1990.95    1.123   140.20
1991.95    1.128   139.78
1992.95    1.134   139.36
1993.95    1.139   138.95
1994.95    1.145   138.54
1995.95    1.150   138.14
1996.95    1.156   137.74
1997.95    1.161   137.35
1998.95    1.166   136.96
1999.95    1.171   136.57
2000.95    1.177   136.18
2001.95    1.182   135.80
2002.95    1.187   135.42
2003.95    1.192   135.05
2004.95    1.196   134.68
2005.95    1.201   134.31
2006.95    1.206   133.94
2007.95    1.211   133.58
2008.95    1.215   133.22
2009.95    1.220   132.86
2010.95    1.225   132.50
2011.95    1.229   132.15
2012.95    1.233   131.80
2013.95    1.238   131.45
2014.95    1.242   131.11
2015.95    1.246   130.77
2016.95    1.250   130.43
2017.95    1.254   130.09
2018.95    1.258   129.75
2019.95    1.262   129.42
2020.95    1.266   129.09
2021.95    1.270   128.76
2022.95    1.274   128.43
2023.95    1.277   128.10
2024.95    1.281   127.78
2025.95    1.284   127.45
2026.95    1.288   127.13
2027.95    1.291   126.82
2028.95    1.294   126.50
2029.95    1.297   126.18
2030.95    1.300   125.87
2031.95    1.303   125.55
2032.95    1.306   125.24
2033.95    1.309   124.93
2034.95    1.312   124.62
2035.95    1.315   124.32
2036.95    1.317   124.01
2037.95    1.320   123.71
2038.95    1.322   123.40
2039.95    1.325   123.10
2040.95    1.327   122.80
2041.95    1.329   122.50
2042.95    1.331   122.20
2043.95    1.333   121.90
2044.95    1.335   121.60
2045.95    1.337   121.30
2046.95    1.339   121.01
2047.95    1.340   120.71
2048.95    1.342   120.42
2049.95    1.344   120.12
2050.95    1.345   119.83
2051.95    1.346   119.53
2052.95    1.347   119.24
2053.95    1.349   118.95
2054.95    1.350   118.66
2055.95    1.351   118.37
2056.95    1.351   118.08
2057.95    1.352   117.79
2058.95    1.353   117.50
2059.95    1.353   117.21
2060.95    1.354   116.92
2061.95    1.354   116.63
2062.95    1.354   116.34
2063.95    1.354   116.05
2064.95    1.354   115.76
2065.95    1.354   115.47
2066.95    1.354   115.18
2067.95    1.354   114.89
2068.95    1.354   114.60
2069.95    1.353   114.31
2070.95    1.353   114.02
2071.95    1.352   113.73
2072.95    1.351   113.44
2073.95    1.350   113.15
2074.95    1.349   112.86
2075.95    1.348   112.57
2076.95    1.347   112.28
2077.95    1.345   111.99
2078.95    1.344   111.69
2079.95    1.342   111.40
2080.95    1.341   111.10
2081.95    1.339   110.81
2082.95    1.337   110.51
2083.95    1.335   110.21
2084.95    1.333   109.92
2085.95    1.330   109.62
2086.95    1.328   109.32
2087.95    1.326   109.02
2088.95    1.323   108.71
2089.95    1.320   108.41
2090.95    1.317   108.10
2091.95    1.314   107.80
2092.95    1.311   107.49
2093.95    1.308   107.18
2094.95    1.304   106.87
2095.95    1.301   106.56
2096.95    1.297   106.24
2097.95    1.293   105.93
2098.95    1.290   105.61
2099.95    1.285   105.29
2100.95    1.281   104.97
2101.95    1.277   104.64
2102.95    1.273   104.32
2103.95    1.268   103.99
2104.95    1.263   103.66
2105.95    1.258   103.32
2106.95    1.253   102.99
2107.95    1.248   102.65
2108.95    1.243   102.30
2109.95    1.237   101.96
2110.95    1.232   101.61
2111.95    1.226   101.26
2112.95    1.220   100.91
2113.95    1.214   100.55
2114.95    1.208   100.19
2115.95    1.202    99.82
2116.95    1.195    99.45
2117.95    1.189    99.08
2118.95    1.182    98.70
2119.95    1.175    98.32
2120.95    1.168    97.93
2121.95    1.160    97.54
2122.95    1.153    97.14
2123.95    1.145    96.74
2124.95    1.138    96.34
2125.95    1.130    95.92
2126.95    1.122    95.50
2127.95    1.113    95.08
2128.95    1.105    94.65
2129.95    1.096    94.21
2130.95    1.088    93.77
2131.95    1.079    93.31
2132.95    1.070    92.85
2133.95    1.060    92.39
2134.95    1.051    91.91
2135.95    1.041    91.43
2136.95    1.031    90.93
2137.95    1.021    90.43
2138.95    1.011    89.91
2139.95    1.001    89.39
2140.95    0.990    88.86
2141.95    0.980    88.31
2142.95    0.969    87.75
2143.95    0.958    87.18
2144.95    0.947    86.59
2145.95    0.935    85.99
2146.95    0.924    85.38
2147.95    0.912    84.75
2148.95    0.900    84.10
2149.95    0.888    83.44
2150.95    0.875    82.76
2151.95    0.863    82.06
2152.95    0.850    81.33
2153.95    0.838    80.59
2154.95    0.825    79.82
2155.95    0.811    79.03
2156.95    0.798    78.21
2157.95    0.785    77.36
2158.95    0.771    76.48
2159.95    0.757    75.58
2160.95    0.743    74.63
2161.95    0.729    73.65
2162.95    0.715    72.64
2163.95    0.701    71.58
2164.95    0.686    70.47
2165.95    0.672    69.32
2166.95    0.657    68.12
2167.95    0.642    66.86
2168.95    0.628    65.55
2169.95    0.613    64.17
2170.95    0.598    62.72
2171.95    0.583    61.20
2172.95    0.568    59.60
2173.95    0.554    57.91
2174.95    0.539    56.14
2175.95    0.525    54.26
2176.95    0.511    52.28
2177.95    0.496    50.19
2178.95    0.483    47.98
2179.95    0.469    45.63
2180.95    0.456    43.16
2181.95    0.444    40.54
2182.95    0.432    37.77
2183.95    0.420    34.85
2184.95    0.410    31.77
2185.95    0.400    28.53
2186.95    0.391    25.14
2187.95    0.383    21.59
2188.95    0.376    17.90
2189.95    0.370    14.09
2190.95    0.365    10.17
2191.95    0.362     6.16
2192.95    0.360     2.08
2193.95    0.359   357.98
2194.95    0.360   353.87
2195.95    0.361   349.79
2196.95    0.364   345.76
2197.95    0.369   341.80
2198.95    0.374   337.95
2199.95    0.380   334.22
2200.95    0.387   330.61
2201.95    0.395   327.14
2202.95    0.403   323.81
2203.95    0.413   320.62
2204.95    0.422   317.58
2205.95    0.432   314.67
2206.95    0.442   311.89
2207.95    0.452   309.23
2208.95    0.462   306.69
2209.95    0.472   304.26






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 15:08:51



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