Double Star Calculator - Orbit

Orbital Elements for STF2026AB
WDS: STF2026AB WDS ID/Discoverer
P: 433.791 Orbital period (years)
a: 2.38112 Semi-major axis (arcseconds)
i: 132.719 Inclination (degrees)
Ω: 13.026 Longitude of ascending node (degrees)
T: 1907.151 Epoch of periastron passage (year)
e: 0.80696 Eccentricity
ω: 193.054 Longitude of periastron (degrees)
Start-Year: 1808.10445 Year
End-Year: 2241.89555 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2026AB
Position: 161557.07+072124.8 Epoch-2000 right ascension and declination
WDS-ID: 16160+0721 WDS designation
Discoverer Code: STF2026AB Discover designation and components
ADS number: 9982 Aitken Double Star catalog
HD number: 146413 HD catalog number
Hipparcos number: 79702 Hipparcos catalog number
V1: 9.48 Magnitude of the primary
V2: 9.86 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: n Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STF2026AB



WDS 6th Orbit including measures of STF2026AB

-- 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 STF2026AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.686    15.17
--------------------------
1808.10    3.092   348.63
1809.10    3.073   348.43
1810.10    3.054   348.23
1811.10    3.034   348.03
1812.10    3.014   347.82
1813.10    2.994   347.61
1814.10    2.974   347.40
1815.10    2.954   347.19
1816.10    2.933   346.97
1817.10    2.912   346.75
1818.10    2.891   346.52
1819.10    2.870   346.30
1820.10    2.849   346.07
1821.10    2.827   345.83
1822.10    2.805   345.59
1823.10    2.783   345.35
1824.10    2.761   345.11
1825.10    2.739   344.86
1826.10    2.716   344.60
1827.10    2.693   344.35
1828.10    2.670   344.08
1829.10    2.647   343.82
1830.10    2.623   343.55
1831.10    2.600   343.27
1832.10    2.576   342.99
1833.10    2.551   342.70
1834.10    2.527   342.41
1835.10    2.502   342.11
1836.10    2.478   341.81
1837.10    2.452   341.50
1838.10    2.427   341.18
1839.10    2.401   340.86
1840.10    2.376   340.53
1841.10    2.350   340.19
1842.10    2.323   339.84
1843.10    2.297   339.49
1844.10    2.270   339.13
1845.10    2.243   338.76
1846.10    2.215   338.38
1847.10    2.188   337.99
1848.10    2.160   337.59
1849.10    2.132   337.18
1850.10    2.104   336.76
1851.10    2.075   336.33
1852.10    2.046   335.88
1853.10    2.017   335.43
1854.10    1.987   334.96
1855.10    1.958   334.47
1856.10    1.928   333.97
1857.10    1.897   333.46
1858.10    1.867   332.93
1859.10    1.836   332.38
1860.10    1.805   331.81
1861.10    1.774   331.22
1862.10    1.742   330.61
1863.10    1.710   329.97
1864.10    1.678   329.32
1865.10    1.645   328.63
1866.10    1.612   327.92
1867.10    1.579   327.18
1868.10    1.546   326.41
1869.10    1.512   325.60
1870.10    1.478   324.76
1871.10    1.444   323.88
1872.10    1.409   322.95
1873.10    1.374   321.98
1874.10    1.339   320.95
1875.10    1.304   319.87
1876.10    1.269   318.73
1877.10    1.233   317.53
1878.10    1.197   316.25
1879.10    1.161   314.89
1880.10    1.125   313.45
1881.10    1.088   311.91
1882.10    1.052   310.26
1883.10    1.016   308.50
1884.10    0.979   306.60
1885.10    0.943   304.56
1886.10    0.907   302.36
1887.10    0.871   299.97
1888.10    0.835   297.38
1889.10    0.800   294.56
1890.10    0.766   291.48
1891.10    0.733   288.12
1892.10    0.700   284.45
1893.10    0.670   280.43
1894.10    0.640   276.03
1895.10    0.613   271.22
1896.10    0.588   265.99
1897.10    0.565   260.31
1898.10    0.546   254.19
1899.10    0.529   247.65
1900.10    0.515   240.73
1901.10    0.505   233.48
1902.10    0.496   225.94
1903.10    0.489   218.17
1904.10    0.482   210.18
1905.10    0.475   201.95
1906.10    0.466   193.43
1907.10    0.454   184.51
1908.10    0.441   175.09
1909.10    0.428   165.08
1910.10    0.418   154.51
1911.10    0.413   143.56
1912.10    0.416   132.56
1913.10    0.428   121.94
1914.10    0.448   112.08
1915.10    0.476   103.22
1916.10    0.510    95.44
1917.10    0.548    88.68
1918.10    0.590    82.85
1919.10    0.635    77.82
1920.10    0.681    73.46
1921.10    0.728    69.65
1922.10    0.776    66.32
1923.10    0.825    63.37
1924.10    0.873    60.76
1925.10    0.921    58.41
1926.10    0.969    56.30
1927.10    1.016    54.38
1928.10    1.064    52.64
1929.10    1.110    51.04
1930.10    1.156    49.57
1931.10    1.202    48.22
1932.10    1.247    46.96
1933.10    1.291    45.79
1934.10    1.335    44.69
1935.10    1.378    43.67
1936.10    1.420    42.71
1937.10    1.462    41.80
1938.10    1.504    40.94
1939.10    1.545    40.13
1940.10    1.585    39.36
1941.10    1.625    38.63
1942.10    1.664    37.93
1943.10    1.702    37.26
1944.10    1.741    36.63
1945.10    1.778    36.02
1946.10    1.815    35.43
1947.10    1.852    34.87
1948.10    1.888    34.33
1949.10    1.924    33.82
1950.10    1.959    33.32
1951.10    1.994    32.83
1952.10    2.028    32.37
1953.10    2.062    31.92
1954.10    2.095    31.48
1955.10    2.128    31.06
1956.10    2.160    30.65
1957.10    2.192    30.25
1958.10    2.224    29.86
1959.10    2.255    29.49
1960.10    2.286    29.12
1961.10    2.317    28.76
1962.10    2.347    28.42
1963.10    2.377    28.08
1964.10    2.406    27.75
1965.10    2.435    27.43
1966.10    2.464    27.11
1967.10    2.492    26.81
1968.10    2.520    26.51
1969.10    2.548    26.21
1970.10    2.575    25.93
1971.10    2.602    25.64
1972.10    2.629    25.37
1973.10    2.655    25.10
1974.10    2.681    24.83
1975.10    2.707    24.57
1976.10    2.732    24.32
1977.10    2.758    24.07
1978.10    2.782    23.82
1979.10    2.807    23.58
1980.10    2.831    23.34
1981.10    2.855    23.11
1982.10    2.879    22.88
1983.10    2.902    22.66
1984.10    2.925    22.43
1985.10    2.948    22.22
1986.10    2.971    22.00
1987.10    2.993    21.79
1988.10    3.015    21.58
1989.10    3.037    21.37
1990.10    3.058    21.17
1991.10    3.079    20.97
1992.10    3.100    20.77
1993.10    3.121    20.58
1994.10    3.142    20.39
1995.10    3.162    20.20
1996.10    3.182    20.01
1997.10    3.202    19.82
1998.10    3.221    19.64
1999.10    3.241    19.46
2000.10    3.260    19.28
2001.10    3.279    19.11
2002.10    3.297    18.93
2003.10    3.316    18.76
2004.10    3.334    18.59
2005.10    3.352    18.42
2006.10    3.370    18.25
2007.10    3.387    18.09
2008.10    3.404    17.92
2009.10    3.422    17.76
2010.10    3.438    17.60
2011.10    3.455    17.44
2012.10    3.472    17.29
2013.10    3.488    17.13
2014.10    3.504    16.98
2015.10    3.520    16.82
2016.10    3.535    16.67
2017.10    3.551    16.52
2018.10    3.566    16.37
2019.10    3.581    16.22
2020.10    3.596    16.08
2021.10    3.611    15.93
2022.10    3.625    15.79
2023.10    3.639    15.65
2024.10    3.653    15.50
2025.10    3.667    15.36
2026.10    3.681    15.22
2027.10    3.694    15.09
2028.10    3.708    14.95
2029.10    3.721    14.81
2030.10    3.734    14.68
2031.10    3.747    14.54
2032.10    3.759    14.41
2033.10    3.772    14.27
2034.10    3.784    14.14
2035.10    3.796    14.01
2036.10    3.808    13.88
2037.10    3.820    13.75
2038.10    3.831    13.62
2039.10    3.843    13.49
2040.10    3.854    13.37
2041.10    3.865    13.24
2042.10    3.876    13.11
2043.10    3.886    12.99
2044.10    3.897    12.86
2045.10    3.907    12.74
2046.10    3.917    12.62
2047.10    3.927    12.49
2048.10    3.937    12.37
2049.10    3.947    12.25
2050.10    3.956    12.13
2051.10    3.966    12.01
2052.10    3.975    11.89
2053.10    3.984    11.77
2054.10    3.993    11.65
2055.10    4.001    11.54
2056.10    4.010    11.42
2057.10    4.018    11.30
2058.10    4.027    11.18
2059.10    4.035    11.07
2060.10    4.043    10.95
2061.10    4.050    10.84
2062.10    4.058    10.72
2063.10    4.065    10.61
2064.10    4.073    10.49
2065.10    4.080    10.38
2066.10    4.087    10.27
2067.10    4.094    10.16
2068.10    4.100    10.04
2069.10    4.107     9.93
2070.10    4.113     9.82
2071.10    4.119     9.71
2072.10    4.125     9.60
2073.10    4.131     9.49
2074.10    4.137     9.38
2075.10    4.143     9.27
2076.10    4.148     9.16
2077.10    4.154     9.05
2078.10    4.159     8.94
2079.10    4.164     8.83
2080.10    4.169     8.72
2081.10    4.173     8.61
2082.10    4.178     8.50
2083.10    4.182     8.40
2084.10    4.187     8.29
2085.10    4.191     8.18
2086.10    4.195     8.07
2087.10    4.199     7.97
2088.10    4.202     7.86
2089.10    4.206     7.75
2090.10    4.209     7.65
2091.10    4.213     7.54
2092.10    4.216     7.43
2093.10    4.219     7.33
2094.10    4.222     7.22
2095.10    4.225     7.12
2096.10    4.227     7.01
2097.10    4.230     6.91
2098.10    4.232     6.80
2099.10    4.234     6.70
2100.10    4.236     6.59
2101.10    4.238     6.49
2102.10    4.240     6.38
2103.10    4.241     6.28
2104.10    4.243     6.17
2105.10    4.244     6.07
2106.10    4.245     5.96
2107.10    4.246     5.86
2108.10    4.247     5.75
2109.10    4.248     5.65
2110.10    4.249     5.54
2111.10    4.249     5.44
2112.10    4.249     5.33
2113.10    4.250     5.23
2114.10    4.250     5.13
2115.10    4.250     5.02
2116.10    4.249     4.92
2117.10    4.249     4.81
2118.10    4.249     4.71
2119.10    4.248     4.60
2120.10    4.247     4.50
2121.10    4.246     4.39
2122.10    4.245     4.29
2123.10    4.244     4.19
2124.10    4.243     4.08
2125.10    4.241     3.98
2126.10    4.240     3.87
2127.10    4.238     3.77
2128.10    4.236     3.66
2129.10    4.234     3.56
2130.10    4.232     3.45
2131.10    4.230     3.35
2132.10    4.228     3.24
2133.10    4.225     3.13
2134.10    4.222     3.03
2135.10    4.220     2.92
2136.10    4.217     2.82
2137.10    4.214     2.71
2138.10    4.210     2.60
2139.10    4.207     2.50
2140.10    4.204     2.39
2141.10    4.200     2.29
2142.10    4.196     2.18
2143.10    4.192     2.07
2144.10    4.188     1.96
2145.10    4.184     1.86
2146.10    4.180     1.75
2147.10    4.175     1.64
2148.10    4.171     1.53
2149.10    4.166     1.42
2150.10    4.161     1.31
2151.10    4.156     1.21
2152.10    4.151     1.10
2153.10    4.146     0.99
2154.10    4.140     0.88
2155.10    4.135     0.77
2156.10    4.129     0.66
2157.10    4.123     0.55
2158.10    4.117     0.43
2159.10    4.111     0.32
2160.10    4.105     0.21
2161.10    4.099     0.10
2162.10    4.092   359.99
2163.10    4.086   359.87
2164.10    4.079   359.76
2165.10    4.072   359.65
2166.10    4.065   359.53
2167.10    4.058   359.42
2168.10    4.050   359.30
2169.10    4.043   359.19
2170.10    4.035   359.07
2171.10    4.027   358.96
2172.10    4.019   358.84
2173.10    4.011   358.72
2174.10    4.003   358.61
2175.10    3.995   358.49
2176.10    3.986   358.37
2177.10    3.978   358.25
2178.10    3.969   358.13
2179.10    3.960   358.01
2180.10    3.951   357.89
2181.10    3.942   357.77
2182.10    3.933   357.65
2183.10    3.923   357.53
2184.10    3.913   357.40
2185.10    3.904   357.28
2186.10    3.894   357.16
2187.10    3.884   357.03
2188.10    3.873   356.91
2189.10    3.863   356.78
2190.10    3.853   356.65
2191.10    3.842   356.53
2192.10    3.831   356.40
2193.10    3.820   356.27
2194.10    3.809   356.14
2195.10    3.798   356.01
2196.10    3.786   355.88
2197.10    3.775   355.75
2198.10    3.763   355.61
2199.10    3.751   355.48
2200.10    3.739   355.35
2201.10    3.727   355.21
2202.10    3.715   355.08
2203.10    3.702   354.94
2204.10    3.690   354.80
2205.10    3.677   354.66
2206.10    3.664   354.52
2207.10    3.651   354.38
2208.10    3.638   354.24
2209.10    3.624   354.10
2210.10    3.611   353.95
2211.10    3.597   353.81
2212.10    3.583   353.66
2213.10    3.569   353.51
2214.10    3.555   353.36
2215.10    3.540   353.21
2216.10    3.526   353.06
2217.10    3.511   352.91
2218.10    3.496   352.76
2219.10    3.481   352.60
2220.10    3.466   352.45
2221.10    3.451   352.29
2222.10    3.435   352.13
2223.10    3.420   351.97
2224.10    3.404   351.81
2225.10    3.388   351.64
2226.10    3.371   351.48
2227.10    3.355   351.31
2228.10    3.339   351.14
2229.10    3.322   350.97
2230.10    3.305   350.80
2231.10    3.288   350.63
2232.10    3.271   350.45
2233.10    3.253   350.28
2234.10    3.236   350.10
2235.10    3.218   349.92
2236.10    3.200   349.73
2237.10    3.182   349.55
2238.10    3.163   349.36
2239.10    3.145   349.17
2240.10    3.126   348.98
2241.10    3.107   348.78






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 17:24:39



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