Double Star Calculator - Orbit

Orbital Elements for STT278
WDS: STT278 WDS ID/Discoverer
P: 506.770 Orbital period (years)
a: 0.518 Semi-major axis (arcseconds)
i: 149.9 Inclination (degrees)
Ω: 8.5 Longitude of ascending node (degrees)
T: 1948.420 Epoch of periastron passage (year)
e: 0.434 Eccentricity
ω: 355.7 Longitude of periastron (degrees)
Start-Year: 1771.615 Year
End-Year: 2278.385 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT278
Position: 141214.66+441122.5 Epoch-2000 right ascension and declination
WDS-ID: 14122+4411 WDS designation
Discoverer Code: STT278 Discover designation and components
ADS number: 9159 Aitken Double Star catalog
HD number: 124399 HD catalog number
Hipparcos number: 69388 Hipparcos catalog number
V1: 8.43 Magnitude of the primary
V2: 8.76 Magnitude of the secondary
Equinox: Equinox
Date: 2007 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: Hrt2009 Reference

Double Star Orbit for STT278



WDS 6th Orbit including measures of STT278

-- 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 STT278
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.417   264.69
--------------------------
1771.62    0.682   170.43
1772.62    0.681   170.11
1773.62    0.679   169.79
1774.62    0.677   169.47
1775.62    0.675   169.14
1776.62    0.674   168.82
1777.62    0.672   168.49
1778.62    0.670   168.16
1779.62    0.668   167.83
1780.62    0.666   167.49
1781.62    0.665   167.16
1782.62    0.663   166.82
1783.62    0.661   166.48
1784.62    0.659   166.14
1785.62    0.657   165.80
1786.62    0.655   165.45
1787.62    0.653   165.10
1788.62    0.651   164.75
1789.62    0.649   164.40
1790.62    0.647   164.05
1791.62    0.645   163.69
1792.62    0.643   163.33
1793.62    0.641   162.97
1794.62    0.638   162.61
1795.62    0.636   162.24
1796.62    0.634   161.87
1797.62    0.632   161.50
1798.62    0.630   161.13
1799.62    0.627   160.75
1800.62    0.625   160.38
1801.62    0.623   159.99
1802.62    0.620   159.61
1803.62    0.618   159.22
1804.62    0.616   158.83
1805.62    0.613   158.44
1806.62    0.611   158.04
1807.62    0.608   157.64
1808.62    0.606   157.24
1809.62    0.603   156.83
1810.62    0.601   156.42
1811.62    0.598   156.01
1812.62    0.596   155.59
1813.62    0.593   155.17
1814.62    0.591   154.75
1815.62    0.588   154.32
1816.62    0.586   153.89
1817.62    0.583   153.45
1818.62    0.580   153.01
1819.62    0.578   152.57
1820.62    0.575   152.12
1821.62    0.572   151.67
1822.62    0.569   151.22
1823.62    0.567   150.76
1824.62    0.564   150.29
1825.62    0.561   149.82
1826.62    0.558   149.35
1827.62    0.556   148.87
1828.62    0.553   148.38
1829.62    0.550   147.90
1830.62    0.547   147.40
1831.62    0.544   146.90
1832.62    0.541   146.40
1833.62    0.538   145.89
1834.62    0.535   145.37
1835.62    0.532   144.85
1836.62    0.529   144.32
1837.62    0.526   143.79
1838.62    0.523   143.25
1839.62    0.520   142.70
1840.62    0.517   142.15
1841.62    0.514   141.59
1842.62    0.511   141.03
1843.62    0.508   140.46
1844.62    0.505   139.88
1845.62    0.502   139.29
1846.62    0.499   138.70
1847.62    0.496   138.10
1848.62    0.492   137.49
1849.62    0.489   136.87
1850.62    0.486   136.25
1851.62    0.483   135.61
1852.62    0.480   134.97
1853.62    0.477   134.32
1854.62    0.473   133.66
1855.62    0.470   133.00
1856.62    0.467   132.32
1857.62    0.464   131.63
1858.62    0.461   130.94
1859.62    0.457   130.23
1860.62    0.454   129.52
1861.62    0.451   128.79
1862.62    0.448   128.06
1863.62    0.444   127.31
1864.62    0.441   126.55
1865.62    0.438   125.78
1866.62    0.435   125.00
1867.62    0.432   124.21
1868.62    0.428   123.41
1869.62    0.425   122.59
1870.62    0.422   121.76
1871.62    0.419   120.92
1872.62    0.415   120.07
1873.62    0.412   119.20
1874.62    0.409   118.32
1875.62    0.406   117.42
1876.62    0.403   116.51
1877.62    0.400   115.59
1878.62    0.397   114.65
1879.62    0.393   113.70
1880.62    0.390   112.73
1881.62    0.387   111.75
1882.62    0.384   110.75
1883.62    0.381   109.74
1884.62    0.378   108.71
1885.62    0.375   107.66
1886.62    0.372   106.60
1887.62    0.369   105.52
1888.62    0.367   104.42
1889.62    0.364   103.31
1890.62    0.361   102.17
1891.62    0.358   101.02
1892.62    0.355    99.86
1893.62    0.353    98.67
1894.62    0.350    97.47
1895.62    0.347    96.25
1896.62    0.345    95.01
1897.62    0.342    93.75
1898.62    0.340    92.47
1899.62    0.337    91.17
1900.62    0.335    89.86
1901.62    0.333    88.53
1902.62    0.331    87.18
1903.62    0.328    85.81
1904.62    0.326    84.42
1905.62    0.324    83.01
1906.62    0.322    81.59
1907.62    0.320    80.15
1908.62    0.318    78.69
1909.62    0.316    77.22
1910.62    0.315    75.72
1911.62    0.313    74.22
1912.62    0.311    72.69
1913.62    0.310    71.15
1914.62    0.308    69.60
1915.62    0.307    68.03
1916.62    0.306    66.44
1917.62    0.304    64.84
1918.62    0.303    63.23
1919.62    0.302    61.61
1920.62    0.301    59.98
1921.62    0.300    58.33
1922.62    0.299    56.67
1923.62    0.298    55.01
1924.62    0.297    53.33
1925.62    0.297    51.65
1926.62    0.296    49.96
1927.62    0.295    48.26
1928.62    0.295    46.55
1929.62    0.294    44.84
1930.62    0.294    43.12
1931.62    0.294    41.40
1932.62    0.293    39.67
1933.62    0.293    37.95
1934.62    0.293    36.21
1935.62    0.293    34.48
1936.62    0.292    32.74
1937.62    0.292    31.00
1938.62    0.292    29.26
1939.62    0.292    27.52
1940.62    0.292    25.78
1941.62    0.292    24.04
1942.62    0.292    22.30
1943.62    0.292    20.56
1944.62    0.292    18.82
1945.62    0.293    17.08
1946.62    0.293    15.35
1947.62    0.293    13.62
1948.62    0.293    11.88
1949.62    0.293    10.16
1950.62    0.293     8.43
1951.62    0.294     6.70
1952.62    0.294     4.98
1953.62    0.294     3.27
1954.62    0.295     1.55
1955.62    0.295   359.84
1956.62    0.295   358.13
1957.62    0.296   356.43
1958.62    0.296   354.73
1959.62    0.296   353.04
1960.62    0.297   351.35
1961.62    0.297   349.66
1962.62    0.298   347.98
1963.62    0.298   346.31
1964.62    0.299   344.64
1965.62    0.299   342.98
1966.62    0.300   341.32
1967.62    0.300   339.67
1968.62    0.301   338.03
1969.62    0.302   336.39
1970.62    0.303   334.77
1971.62    0.303   333.15
1972.62    0.304   331.54
1973.62    0.305   329.94
1974.62    0.306   328.35
1975.62    0.307   326.76
1976.62    0.308   325.19
1977.62    0.309   323.63
1978.62    0.310   322.08
1979.62    0.311   320.54
1980.62    0.313   319.01
1981.62    0.314   317.50
1982.62    0.315   316.00
1983.62    0.316   314.51
1984.62    0.318   313.03
1985.62    0.319   311.57
1986.62    0.321   310.12
1987.62    0.323   308.68
1988.62    0.324   307.26
1989.62    0.326   305.85
1990.62    0.328   304.46
1991.62    0.329   303.09
1992.62    0.331   301.72
1993.62    0.333   300.38
1994.62    0.335   299.05
1995.62    0.337   297.73
1996.62    0.339   296.43
1997.62    0.341   295.15
1998.62    0.343   293.88
1999.62    0.346   292.63
2000.62    0.348   291.40
2001.62    0.350   290.18
2002.62    0.352   288.97
2003.62    0.355   287.78
2004.62    0.357   286.61
2005.62    0.360   285.46
2006.62    0.362   284.32
2007.62    0.365   283.19
2008.62    0.367   282.08
2009.62    0.370   280.99
2010.62    0.372   279.91
2011.62    0.375   278.85
2012.62    0.378   277.80
2013.62    0.380   276.76
2014.62    0.383   275.74
2015.62    0.386   274.74
2016.62    0.389   273.75
2017.62    0.392   272.77
2018.62    0.394   271.81
2019.62    0.397   270.86
2020.62    0.400   269.93
2021.62    0.403   269.01
2022.62    0.406   268.10
2023.62    0.409   267.20
2024.62    0.412   266.32
2025.62    0.415   265.45
2026.62    0.418   264.59
2027.62    0.421   263.74
2028.62    0.423   262.91
2029.62    0.426   262.09
2030.62    0.429   261.28
2031.62    0.432   260.48
2032.62    0.435   259.69
2033.62    0.438   258.91
2034.62    0.441   258.14
2035.62    0.444   257.38
2036.62    0.448   256.64
2037.62    0.451   255.90
2038.62    0.454   255.17
2039.62    0.457   254.46
2040.62    0.460   253.75
2041.62    0.463   253.05
2042.62    0.466   252.36
2043.62    0.469   251.68
2044.62    0.472   251.01
2045.62    0.475   250.34
2046.62    0.478   249.69
2047.62    0.481   249.04
2048.61    0.484   248.40
2049.61    0.487   247.77
2050.61    0.490   247.15
2051.61    0.493   246.53
2052.61    0.496   245.92
2053.61    0.499   245.32
2054.61    0.502   244.73
2055.61    0.505   244.14
2056.61    0.507   243.56
2057.61    0.510   242.99
2058.61    0.513   242.42
2059.61    0.516   241.86
2060.61    0.519   241.31
2061.61    0.522   240.76
2062.61    0.525   240.22
2063.61    0.528   239.68
2064.61    0.531   239.15
2065.61    0.533   238.62
2066.61    0.536   238.10
2067.61    0.539   237.59
2068.61    0.542   237.08
2069.61    0.545   236.58
2070.61    0.547   236.08
2071.61    0.550   235.59
2072.61    0.553   235.10
2073.61    0.556   234.62
2074.61    0.558   234.14
2075.61    0.561   233.66
2076.61    0.564   233.19
2077.61    0.566   232.73
2078.61    0.569   232.27
2079.61    0.572   231.81
2080.61    0.574   231.36
2081.61    0.577   230.91
2082.61    0.579   230.46
2083.61    0.582   230.02
2084.61    0.585   229.59
2085.61    0.587   229.15
2086.61    0.590   228.73
2087.61    0.592   228.30
2088.61    0.595   227.88
2089.61    0.597   227.46
2090.61    0.599   227.04
2091.61    0.602   226.63
2092.61    0.604   226.22
2093.61    0.607   225.82
2094.61    0.609   225.42
2095.61    0.611   225.02
2096.61    0.614   224.62
2097.61    0.616   224.23
2098.61    0.618   223.84
2099.61    0.621   223.45
2100.61    0.623   223.07
2101.61    0.625   222.69
2102.61    0.627   222.31
2103.61    0.630   221.93
2104.61    0.632   221.56
2105.61    0.634   221.19
2106.61    0.636   220.82
2107.61    0.638   220.45
2108.61    0.640   220.09
2109.61    0.642   219.73
2110.61    0.644   219.37
2111.61    0.646   219.01
2112.61    0.648   218.66
2113.61    0.650   218.30
2114.61    0.652   217.95
2115.61    0.654   217.61
2116.61    0.656   217.26
2117.61    0.658   216.92
2118.61    0.660   216.57
2119.61    0.662   216.23
2120.61    0.664   215.90
2121.61    0.666   215.56
2122.61    0.667   215.22
2123.61    0.669   214.89
2124.61    0.671   214.56
2125.61    0.673   214.23
2126.61    0.674   213.90
2127.61    0.676   213.58
2128.61    0.678   213.25
2129.61    0.679   212.93
2130.61    0.681   212.61
2131.61    0.683   212.29
2132.61    0.684   211.97
2133.61    0.686   211.66
2134.61    0.687   211.34
2135.61    0.689   211.03
2136.61    0.691   210.72
2137.61    0.692   210.41
2138.61    0.693   210.10
2139.61    0.695   209.79
2140.61    0.696   209.48
2141.61    0.698   209.17
2142.61    0.699   208.87
2143.61    0.701   208.57
2144.61    0.702   208.26
2145.61    0.703   207.96
2146.61    0.704   207.66
2147.61    0.706   207.36
2148.61    0.707   207.07
2149.61    0.708   206.77
2150.61    0.709   206.47
2151.61    0.711   206.18
2152.61    0.712   205.89
2153.61    0.713   205.59
2154.61    0.714   205.30
2155.61    0.715   205.01
2156.61    0.716   204.72
2157.61    0.717   204.43
2158.61    0.718   204.14
2159.61    0.719   203.86
2160.61    0.720   203.57
2161.61    0.721   203.28
2162.61    0.722   203.00
2163.61    0.723   202.71
2164.61    0.724   202.43
2165.61    0.725   202.15
2166.61    0.726   201.86
2167.61    0.727   201.58
2168.61    0.728   201.30
2169.61    0.728   201.02
2170.61    0.729   200.74
2171.61    0.730   200.46
2172.61    0.731   200.18
2173.61    0.731   199.91
2174.61    0.732   199.63
2175.61    0.733   199.35
2176.61    0.733   199.08
2177.61    0.734   198.80
2178.61    0.735   198.52
2179.61    0.735   198.25
2180.61    0.736   197.97
2181.61    0.736   197.70
2182.61    0.737   197.43
2183.61    0.737   197.15
2184.61    0.738   196.88
2185.61    0.738   196.61
2186.61    0.739   196.33
2187.61    0.739   196.06
2188.61    0.739   195.79
2189.61    0.740   195.52
2190.61    0.740   195.25
2191.61    0.740   194.98
2192.61    0.741   194.70
2193.61    0.741   194.43
2194.61    0.741   194.16
2195.61    0.741   193.89
2196.61    0.742   193.62
2197.61    0.742   193.35
2198.61    0.742   193.08
2199.61    0.742   192.81
2200.61    0.742   192.54
2201.61    0.742   192.27
2202.61    0.742   192.00
2203.61    0.742   191.73
2204.61    0.742   191.46
2205.61    0.742   191.19
2206.61    0.742   190.93
2207.61    0.742   190.66
2208.61    0.742   190.39
2209.61    0.742   190.12
2210.61    0.742   189.85
2211.61    0.742   189.58
2212.61    0.742   189.31
2213.61    0.742   189.04
2214.61    0.741   188.77
2215.61    0.741   188.50
2216.61    0.741   188.23
2217.61    0.741   187.96
2218.61    0.740   187.68
2219.61    0.740   187.41
2220.61    0.740   187.14
2221.61    0.739   186.87
2222.61    0.739   186.60
2223.61    0.739   186.33
2224.61    0.738   186.05
2225.61    0.738   185.78
2226.61    0.737   185.51
2227.61    0.737   185.23
2228.61    0.736   184.96
2229.61    0.736   184.69
2230.61    0.735   184.41
2231.61    0.735   184.14
2232.61    0.734   183.86
2233.61    0.733   183.58
2234.61    0.733   183.31
2235.61    0.732   183.03
2236.61    0.731   182.75
2237.61    0.731   182.48
2238.61    0.730   182.20
2239.61    0.729   181.92
2240.61    0.728   181.64
2241.61    0.728   181.36
2242.61    0.727   181.08
2243.61    0.726   180.80
2244.61    0.725   180.51
2245.61    0.724   180.23
2246.61    0.723   179.95
2247.61    0.722   179.66
2248.61    0.721   179.38
2249.61    0.720   179.09
2250.61    0.719   178.80
2251.61    0.718   178.52
2252.61    0.717   178.23
2253.61    0.716   177.94
2254.61    0.715   177.65
2255.61    0.714   177.36
2256.61    0.713   177.07
2257.61    0.712   176.77
2258.61    0.710   176.48
2259.61    0.709   176.18
2260.61    0.708   175.89
2261.61    0.707   175.59
2262.61    0.705   175.29
2263.61    0.704   174.99
2264.61    0.703   174.69
2265.61    0.701   174.39
2266.61    0.700   174.09
2267.61    0.699   173.79
2268.61    0.697   173.48
2269.61    0.696   173.18
2270.61    0.694   172.87
2271.61    0.693   172.56
2272.61    0.691   172.25
2273.61    0.690   171.94
2274.61    0.688   171.62
2275.61    0.687   171.31
2276.61    0.685   170.99
2277.61    0.683   170.68






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 17:03:18



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