Double Star Calculator - Orbit

Orbital Elements for STT531AB
WDS: STT531AB WDS ID/Discoverer
P: 590.000 Orbital period (years)
a: 3.87 Semi-major axis (arcseconds)
i: 104.0 Inclination (degrees)
Ω: 160.3 Longitude of ascending node (degrees)
T: 2070.000 Epoch of periastron passage (year)
e: 0.25 Eccentricity
ω: 195.0 Longitude of periastron (degrees)
Start-Year: 1730.0 Year
End-Year: 2320.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT531AB
Position: 040734.35+380428.3 Epoch-2000 right ascension and declination
WDS-ID: 04076+3804 WDS designation
Discoverer Code: STT531AB Discover designation and components
ADS number: 2995 Aitken Double Star catalog
HD number: 25893 HD catalog number
Hipparcos number: 19255 Hipparcos catalog number
V1: 7.32 Magnitude of the primary
V2: 9.69 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1985 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hei1986b Reference

Double Star Orbit for STT531AB



WDS 6th Orbit including measures of STT531AB

-- 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 STT531AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.715   347.92
--------------------------
1730.00    4.763   160.83
1731.00    4.767   160.73
1732.00    4.771   160.64
1733.00    4.775   160.55
1734.00    4.778   160.45
1735.00    4.781   160.36
1736.00    4.784   160.27
1737.00    4.787   160.17
1738.00    4.789   160.08
1739.00    4.791   159.98
1740.00    4.793   159.89
1741.00    4.794   159.80
1742.00    4.795   159.71
1743.00    4.796   159.61
1744.00    4.797   159.52
1745.00    4.797   159.43
1746.00    4.797   159.33
1747.00    4.797   159.24
1748.00    4.796   159.15
1749.00    4.796   159.05
1750.00    4.795   158.96
1751.00    4.793   158.87
1752.00    4.792   158.77
1753.00    4.790   158.68
1754.00    4.788   158.59
1755.00    4.785   158.49
1756.00    4.783   158.40
1757.00    4.780   158.31
1758.00    4.777   158.21
1759.00    4.773   158.12
1760.00    4.770   158.03
1761.00    4.766   157.93
1762.00    4.761   157.84
1763.00    4.757   157.74
1764.00    4.752   157.65
1765.00    4.747   157.55
1766.00    4.742   157.46
1767.00    4.736   157.36
1768.00    4.730   157.27
1769.00    4.724   157.17
1770.00    4.718   157.08
1771.00    4.711   156.98
1772.00    4.705   156.88
1773.00    4.697   156.79
1774.00    4.690   156.69
1775.00    4.682   156.59
1776.00    4.675   156.49
1777.00    4.666   156.40
1778.00    4.658   156.30
1779.00    4.649   156.20
1780.00    4.640   156.10
1781.00    4.631   156.00
1782.00    4.622   155.90
1783.00    4.612   155.80
1784.00    4.602   155.70
1785.00    4.592   155.60
1786.00    4.582   155.49
1787.00    4.571   155.39
1788.00    4.560   155.29
1789.00    4.549   155.19
1790.00    4.537   155.08
1791.00    4.526   154.98
1792.00    4.514   154.87
1793.00    4.501   154.77
1794.00    4.489   154.66
1795.00    4.476   154.56
1796.00    4.463   154.45
1797.00    4.450   154.34
1798.00    4.437   154.23
1799.00    4.423   154.12
1800.00    4.409   154.01
1801.00    4.395   153.90
1802.00    4.381   153.79
1803.00    4.366   153.68
1804.00    4.351   153.57
1805.00    4.336   153.45
1806.00    4.321   153.34
1807.00    4.305   153.22
1808.00    4.289   153.11
1809.00    4.273   152.99
1810.00    4.257   152.87
1811.00    4.240   152.76
1812.00    4.223   152.64
1813.00    4.206   152.52
1814.00    4.189   152.39
1815.00    4.172   152.27
1816.00    4.154   152.15
1817.00    4.136   152.02
1818.00    4.118   151.90
1819.00    4.099   151.77
1820.00    4.081   151.64
1821.00    4.062   151.51
1822.00    4.043   151.38
1823.00    4.023   151.25
1824.00    4.004   151.12
1825.00    3.984   150.99
1826.00    3.964   150.85
1827.00    3.944   150.71
1828.00    3.923   150.57
1829.00    3.903   150.43
1830.00    3.882   150.29
1831.00    3.861   150.15
1832.00    3.840   150.01
1833.00    3.818   149.86
1834.00    3.796   149.71
1835.00    3.774   149.56
1836.00    3.752   149.41
1837.00    3.730   149.26
1838.00    3.707   149.10
1839.00    3.685   148.95
1840.00    3.662   148.79
1841.00    3.638   148.63
1842.00    3.615   148.47
1843.00    3.591   148.30
1844.00    3.568   148.13
1845.00    3.544   147.96
1846.00    3.519   147.79
1847.00    3.495   147.62
1848.00    3.470   147.44
1849.00    3.446   147.26
1850.00    3.421   147.08
1851.00    3.395   146.90
1852.00    3.370   146.71
1853.00    3.345   146.52
1854.00    3.319   146.33
1855.00    3.293   146.13
1856.00    3.267   145.93
1857.00    3.241   145.73
1858.00    3.214   145.52
1859.00    3.188   145.32
1860.00    3.161   145.10
1861.00    3.134   144.89
1862.00    3.107   144.67
1863.00    3.079   144.44
1864.00    3.052   144.22
1865.00    3.024   143.98
1866.00    2.997   143.75
1867.00    2.969   143.51
1868.00    2.941   143.26
1869.00    2.912   143.01
1870.00    2.884   142.76
1871.00    2.855   142.50
1872.00    2.827   142.23
1873.00    2.798   141.96
1874.00    2.769   141.68
1875.00    2.740   141.40
1876.00    2.711   141.11
1877.00    2.681   140.82
1878.00    2.652   140.52
1879.00    2.622   140.21
1880.00    2.592   139.90
1881.00    2.563   139.57
1882.00    2.533   139.24
1883.00    2.503   138.91
1884.00    2.472   138.56
1885.00    2.442   138.21
1886.00    2.412   137.84
1887.00    2.382   137.47
1888.00    2.351   137.09
1889.00    2.320   136.69
1890.00    2.290   136.29
1891.00    2.259   135.88
1892.00    2.228   135.45
1893.00    2.198   135.02
1894.00    2.167   134.57
1895.00    2.136   134.10
1896.00    2.105   133.63
1897.00    2.074   133.14
1898.00    2.043   132.63
1899.00    2.012   132.11
1900.00    1.981   131.57
1901.00    1.950   131.02
1902.00    1.919   130.45
1903.00    1.889   129.86
1904.00    1.858   129.25
1905.00    1.827   128.62
1906.00    1.796   127.97
1907.00    1.766   127.29
1908.00    1.735   126.59
1909.00    1.705   125.87
1910.00    1.675   125.12
1911.00    1.645   124.34
1912.00    1.615   123.53
1913.00    1.585   122.70
1914.00    1.555   121.83
1915.00    1.526   120.93
1916.00    1.497   119.99
1917.00    1.468   119.02
1918.00    1.440   118.00
1919.00    1.412   116.95
1920.00    1.384   115.86
1921.00    1.357   114.72
1922.00    1.330   113.53
1923.00    1.303   112.29
1924.00    1.277   111.01
1925.00    1.252   109.67
1926.00    1.227   108.28
1927.00    1.203   106.83
1928.00    1.180   105.32
1929.00    1.157   103.75
1930.00    1.135   102.12
1931.00    1.114   100.42
1932.00    1.093    98.67
1933.00    1.074    96.84
1934.00    1.056    94.96
1935.00    1.039    93.00
1936.00    1.023    90.99
1937.00    1.008    88.91
1938.00    0.994    86.77
1939.00    0.982    84.58
1940.00    0.971    82.34
1941.00    0.962    80.04
1942.00    0.954    77.71
1943.00    0.947    75.34
1944.00    0.942    72.94
1945.00    0.939    70.52
1946.00    0.937    68.08
1947.00    0.937    65.64
1948.00    0.938    63.20
1949.00    0.941    60.78
1950.00    0.945    58.37
1951.00    0.951    55.99
1952.00    0.959    53.64
1953.00    0.968    51.34
1954.00    0.978    49.07
1955.00    0.990    46.86
1956.00    1.003    44.71
1957.00    1.018    42.61
1958.00    1.033    40.58
1959.00    1.050    38.60
1960.00    1.068    36.69
1961.00    1.087    34.85
1962.00    1.106    33.07
1963.00    1.127    31.35
1964.00    1.148    29.70
1965.00    1.171    28.10
1966.00    1.194    26.57
1967.00    1.217    25.10
1968.00    1.241    23.68
1969.00    1.266    22.32
1970.00    1.292    21.01
1971.00    1.317    19.75
1972.00    1.343    18.54
1973.00    1.370    17.38
1974.00    1.397    16.26
1975.00    1.424    15.19
1976.00    1.452    14.15
1977.00    1.479    13.15
1978.00    1.507    12.19
1979.00    1.536    11.27
1980.00    1.564    10.38
1981.00    1.592     9.52
1982.00    1.621     8.69
1983.00    1.649     7.89
1984.00    1.678     7.11
1985.00    1.707     6.37
1986.00    1.735     5.64
1987.00    1.764     4.94
1988.00    1.793     4.27
1989.00    1.821     3.61
1990.00    1.850     2.98
1991.00    1.878     2.36
1992.00    1.907     1.76
1993.00    1.935     1.18
1994.00    1.963     0.62
1995.00    1.991     0.07
1996.00    2.019   359.54
1997.00    2.046   359.02
1998.00    2.074   358.52
1999.00    2.101   358.03
2000.00    2.128   357.55
2001.00    2.155   357.08
2002.00    2.181   356.62
2003.00    2.207   356.18
2004.00    2.233   355.75
2005.00    2.259   355.32
2006.00    2.284   354.91
2007.00    2.309   354.50
2008.00    2.334   354.10
2009.00    2.358   353.71
2010.00    2.382   353.33
2011.00    2.405   352.96
2012.00    2.428   352.59
2013.00    2.451   352.23
2014.00    2.474   351.88
2015.00    2.496   351.53
2016.00    2.517   351.19
2017.00    2.538   350.86
2018.00    2.559   350.53
2019.00    2.579   350.20
2020.00    2.599   349.88
2021.00    2.618   349.57
2022.00    2.637   349.26
2023.00    2.655   348.95
2024.00    2.673   348.65
2025.00    2.690   348.35
2026.00    2.707   348.06
2027.00    2.723   347.77
2028.00    2.739   347.48
2029.00    2.754   347.20
2030.00    2.768   346.92
2031.00    2.782   346.64
2032.00    2.795   346.37
2033.00    2.808   346.09
2034.00    2.820   345.82
2035.00    2.832   345.55
2036.00    2.843   345.29
2037.00    2.853   345.02
2038.00    2.862   344.76
2039.00    2.871   344.50
2040.00    2.880   344.24
2041.00    2.888   343.99
2042.00    2.895   343.73
2043.00    2.901   343.47
2044.00    2.907   343.22
2045.00    2.912   342.97
2046.00    2.916   342.72
2047.00    2.920   342.46
2048.00    2.923   342.21
2049.00    2.925   341.96
2050.00    2.927   341.71
2051.00    2.928   341.46
2052.00    2.928   341.21
2053.00    2.927   340.96
2054.00    2.926   340.71
2055.00    2.924   340.46
2056.00    2.921   340.21
2057.00    2.918   339.96
2058.00    2.914   339.71
2059.00    2.909   339.46
2060.00    2.904   339.20
2061.00    2.897   338.95
2062.00    2.891   338.69
2063.00    2.883   338.44
2064.00    2.875   338.18
2065.00    2.865   337.92
2066.00    2.856   337.66
2067.00    2.845   337.39
2068.00    2.834   337.13
2069.00    2.822   336.86
2070.00    2.809   336.59
2071.00    2.796   336.32
2072.00    2.782   336.04
2073.00    2.768   335.77
2074.00    2.752   335.48
2075.00    2.736   335.20
2076.00    2.720   334.91
2077.00    2.702   334.62
2078.00    2.684   334.33
2079.00    2.666   334.03
2080.00    2.646   333.72
2081.00    2.626   333.42
2082.00    2.606   333.10
2083.00    2.585   332.79
2084.00    2.563   332.46
2085.00    2.541   332.13
2086.00    2.518   331.80
2087.00    2.494   331.46
2088.00    2.470   331.11
2089.00    2.446   330.76
2090.00    2.421   330.39
2091.00    2.395   330.03
2092.00    2.369   329.65
2093.00    2.342   329.26
2094.00    2.315   328.87
2095.00    2.287   328.46
2096.00    2.259   328.05
2097.00    2.231   327.62
2098.00    2.202   327.19
2099.00    2.172   326.74
2100.00    2.143   326.28
2101.00    2.112   325.81
2102.00    2.082   325.32
2103.00    2.051   324.82
2104.00    2.020   324.30
2105.00    1.988   323.77
2106.00    1.956   323.22
2107.00    1.924   322.65
2108.00    1.892   322.06
2109.00    1.859   321.46
2110.00    1.826   320.82
2111.00    1.793   320.17
2112.00    1.760   319.49
2113.00    1.727   318.79
2114.00    1.693   318.06
2115.00    1.660   317.29
2116.00    1.626   316.50
2117.00    1.592   315.67
2118.00    1.559   314.81
2119.00    1.525   313.91
2120.00    1.491   312.97
2121.00    1.458   311.99
2122.00    1.425   310.96
2123.00    1.391   309.88
2124.00    1.358   308.74
2125.00    1.326   307.55
2126.00    1.293   306.31
2127.00    1.261   304.99
2128.00    1.230   303.61
2129.00    1.199   302.16
2130.00    1.168   300.63
2131.00    1.139   299.02
2132.00    1.110   297.33
2133.00    1.081   295.55
2134.00    1.054   293.67
2135.00    1.027   291.69
2136.00    1.002   289.61
2137.00    0.978   287.43
2138.00    0.955   285.13
2139.00    0.934   282.73
2140.00    0.914   280.23
2141.00    0.896   277.61
2142.00    0.879   274.89
2143.00    0.865   272.08
2144.00    0.853   269.17
2145.00    0.842   266.19
2146.00    0.834   263.14
2147.00    0.828   260.04
2148.00    0.824   256.90
2149.00    0.823   253.75
2150.00    0.824   250.59
2151.00    0.828   247.45
2152.00    0.833   244.34
2153.00    0.841   241.29
2154.00    0.852   238.30
2155.00    0.864   235.39
2156.00    0.878   232.57
2157.00    0.895   229.85
2158.00    0.913   227.22
2159.00    0.933   224.71
2160.00    0.954   222.30
2161.00    0.977   220.01
2162.00    1.001   217.82
2163.00    1.027   215.73
2164.00    1.053   213.75
2165.00    1.081   211.87
2166.00    1.109   210.09
2167.00    1.139   208.39
2168.00    1.169   206.79
2169.00    1.200   205.26
2170.00    1.232   203.81
2171.00    1.264   202.44
2172.00    1.296   201.13
2173.00    1.330   199.89
2174.00    1.363   198.71
2175.00    1.397   197.58
2176.00    1.431   196.51
2177.00    1.466   195.49
2178.00    1.501   194.52
2179.00    1.536   193.59
2180.00    1.571   192.70
2181.00    1.606   191.85
2182.00    1.642   191.04
2183.00    1.677   190.26
2184.00    1.713   189.52
2185.00    1.749   188.80
2186.00    1.784   188.12
2187.00    1.820   187.46
2188.00    1.856   186.82
2189.00    1.892   186.21
2190.00    1.928   185.63
2191.00    1.964   185.06
2192.00    1.999   184.52
2193.00    2.035   183.99
2194.00    2.071   183.48
2195.00    2.106   182.99
2196.00    2.142   182.52
2197.00    2.177   182.06
2198.00    2.212   181.61
2199.00    2.247   181.18
2200.00    2.282   180.77
2201.00    2.317   180.36
2202.00    2.352   179.97
2203.00    2.387   179.59
2204.00    2.421   179.22
2205.00    2.455   178.86
2206.00    2.489   178.51
2207.00    2.523   178.17
2208.00    2.557   177.83
2209.00    2.591   177.51
2210.00    2.624   177.20
2211.00    2.658   176.89
2212.00    2.691   176.59
2213.00    2.724   176.30
2214.00    2.756   176.01
2215.00    2.789   175.73
2216.00    2.821   175.46
2217.00    2.853   175.20
2218.00    2.885   174.94
2219.00    2.916   174.68
2220.00    2.948   174.43
2221.00    2.979   174.19
2222.00    3.010   173.95
2223.00    3.041   173.72
2224.00    3.071   173.49
2225.00    3.102   173.26
2226.00    3.132   173.04
2227.00    3.161   172.83
2228.00    3.191   172.61
2229.00    3.220   172.40
2230.00    3.249   172.20
2231.00    3.278   172.00
2232.00    3.307   171.80
2233.00    3.335   171.61
2234.00    3.363   171.42
2235.00    3.391   171.23
2236.00    3.419   171.04
2237.00    3.446   170.86
2238.00    3.473   170.68
2239.00    3.500   170.51
2240.00    3.527   170.33
2241.00    3.553   170.16
2242.00    3.579   170.00
2243.00    3.605   169.83
2244.00    3.630   169.67
2245.00    3.655   169.50
2246.00    3.680   169.35
2247.00    3.705   169.19
2248.00    3.730   169.03
2249.00    3.754   168.88
2250.00    3.778   168.73
2251.00    3.801   168.58
2252.00    3.825   168.43
2253.00    3.848   168.29
2254.00    3.871   168.14
2255.00    3.893   168.00
2256.00    3.916   167.86
2257.00    3.938   167.72
2258.00    3.959   167.59
2259.00    3.981   167.45
2260.00    4.002   167.32
2261.00    4.023   167.18
2262.00    4.044   167.05
2263.00    4.064   166.92
2264.00    4.084   166.79
2265.00    4.104   166.66
2266.00    4.124   166.54
2267.00    4.143   166.41
2268.00    4.162   166.29
2269.00    4.181   166.17
2270.00    4.199   166.04
2271.00    4.217   165.92
2272.00    4.235   165.80
2273.00    4.253   165.68
2274.00    4.270   165.57
2275.00    4.287   165.45
2276.00    4.304   165.33
2277.00    4.320   165.22
2278.00    4.336   165.10
2279.00    4.352   164.99
2280.00    4.368   164.88
2281.00    4.383   164.77
2282.00    4.398   164.65
2283.00    4.413   164.54
2284.00    4.428   164.43
2285.00    4.442   164.33
2286.00    4.456   164.22
2287.00    4.470   164.11
2288.00    4.483   164.00
2289.00    4.496   163.90
2290.00    4.509   163.79
2291.00    4.521   163.69
2292.00    4.534   163.58
2293.00    4.546   163.48
2294.00    4.557   163.38
2295.00    4.569   163.27
2296.00    4.580   163.17
2297.00    4.591   163.07
2298.00    4.601   162.97
2299.00    4.612   162.87
2300.00    4.622   162.77
2301.00    4.631   162.67
2302.00    4.641   162.57
2303.00    4.650   162.47
2304.00    4.659   162.37
2305.00    4.668   162.27
2306.00    4.676   162.17
2307.00    4.684   162.07
2308.00    4.692   161.98
2309.00    4.699   161.88
2310.00    4.706   161.78
2311.00    4.713   161.69
2312.00    4.720   161.59
2313.00    4.726   161.49
2314.00    4.733   161.40
2315.00    4.738   161.30
2316.00    4.744   161.21
2317.00    4.749   161.11
2318.00    4.754   161.02
2319.00    4.759   160.92






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 15:17:58



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