Double Star Calculator - Orbit

Orbital Elements for BU941AB
WDS: BU941AB WDS ID/Discoverer
P: 525.700 Orbital period (years)
a: 0.64 Semi-major axis (arcseconds)
i: 138.3 Inclination (degrees)
Ω: 115.6 Longitude of ascending node (degrees)
T: 2007.690 Epoch of periastron passage (year)
e: 0.787 Eccentricity
ω: 57.1 Longitude of periastron (degrees)
Start-Year: 1762.15 Year
End-Year: 2287.85 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU941AB
Position: 143547.53+001434.5 Epoch-2000 right ascension and declination
WDS-ID: 14358+0015 WDS designation
Discoverer Code: BU941AB Discover designation and components
ADS number: 9318 Aitken Double Star catalog
HD number: 128233 HD catalog number
Hipparcos number: 71377 Hipparcos catalog number
V1: 9.57 Magnitude of the primary
V2: 9.44 Magnitude of the secondary
Equinox: Equinox
Date: 2022 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: Lin2022b Reference

Double Star Orbit for BU941AB



WDS 6th Orbit including measures of BU941AB

-- 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 BU941AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.271   313.40
--------------------------
1762.15    0.935   243.99
1763.15    0.934   243.84
1764.15    0.933   243.69
1765.15    0.932   243.54
1766.15    0.931   243.39
1767.15    0.930   243.24
1768.15    0.929   243.10
1769.15    0.928   242.95
1770.15    0.927   242.80
1771.15    0.926   242.64
1772.15    0.925   242.49
1773.15    0.923   242.34
1774.15    0.922   242.19
1775.15    0.921   242.04
1776.15    0.920   241.89
1777.15    0.919   241.73
1778.15    0.918   241.58
1779.15    0.916   241.43
1780.15    0.915   241.27
1781.15    0.914   241.12
1782.15    0.912   240.96
1783.15    0.911   240.81
1784.15    0.910   240.65
1785.15    0.909   240.50
1786.15    0.907   240.34
1787.15    0.906   240.18
1788.15    0.904   240.02
1789.15    0.903   239.87
1790.15    0.902   239.71
1791.15    0.900   239.55
1792.15    0.899   239.39
1793.15    0.897   239.23
1794.15    0.896   239.07
1795.15    0.894   238.91
1796.15    0.893   238.74
1797.15    0.891   238.58
1798.15    0.890   238.42
1799.15    0.888   238.25
1800.15    0.886   238.09
1801.15    0.885   237.93
1802.15    0.883   237.76
1803.15    0.882   237.59
1804.15    0.880   237.43
1805.15    0.878   237.26
1806.15    0.877   237.09
1807.15    0.875   236.92
1808.15    0.873   236.76
1809.15    0.871   236.59
1810.15    0.870   236.41
1811.15    0.868   236.24
1812.15    0.866   236.07
1813.15    0.864   235.90
1814.15    0.862   235.73
1815.15    0.861   235.55
1816.15    0.859   235.38
1817.15    0.857   235.20
1818.15    0.855   235.02
1819.15    0.853   234.85
1820.15    0.851   234.67
1821.15    0.849   234.49
1822.15    0.847   234.31
1823.15    0.845   234.13
1824.15    0.843   233.95
1825.15    0.841   233.77
1826.15    0.839   233.58
1827.15    0.837   233.40
1828.15    0.835   233.22
1829.15    0.833   233.03
1830.15    0.831   232.84
1831.15    0.829   232.66
1832.15    0.827   232.47
1833.15    0.824   232.28
1834.15    0.822   232.09
1835.15    0.820   231.90
1836.15    0.818   231.70
1837.15    0.816   231.51
1838.15    0.813   231.31
1839.15    0.811   231.12
1840.15    0.809   230.92
1841.15    0.807   230.72
1842.15    0.804   230.52
1843.15    0.802   230.32
1844.15    0.800   230.12
1845.15    0.797   229.92
1846.15    0.795   229.72
1847.15    0.792   229.51
1848.15    0.790   229.30
1849.15    0.788   229.10
1850.15    0.785   228.89
1851.15    0.783   228.68
1852.15    0.780   228.47
1853.15    0.778   228.25
1854.15    0.775   228.04
1855.15    0.773   227.82
1856.15    0.770   227.61
1857.15    0.767   227.39
1858.15    0.765   227.17
1859.15    0.762   226.94
1860.15    0.760   226.72
1861.15    0.757   226.50
1862.15    0.754   226.27
1863.15    0.752   226.04
1864.15    0.749   225.81
1865.15    0.746   225.58
1866.15    0.743   225.35
1867.15    0.741   225.11
1868.15    0.738   224.88
1869.15    0.735   224.64
1870.15    0.732   224.40
1871.15    0.729   224.16
1872.15    0.727   223.91
1873.15    0.724   223.67
1874.15    0.721   223.42
1875.15    0.718   223.17
1876.15    0.715   222.92
1877.15    0.712   222.67
1878.15    0.709   222.41
1879.15    0.706   222.15
1880.15    0.703   221.89
1881.15    0.700   221.63
1882.15    0.697   221.36
1883.15    0.694   221.10
1884.15    0.691   220.83
1885.15    0.688   220.56
1886.15    0.685   220.28
1887.15    0.682   220.01
1888.15    0.679   219.73
1889.15    0.675   219.44
1890.15    0.672   219.16
1891.15    0.669   218.87
1892.15    0.666   218.58
1893.15    0.663   218.29
1894.15    0.659   217.99
1895.15    0.656   217.70
1896.15    0.653   217.39
1897.15    0.649   217.09
1898.15    0.646   216.78
1899.15    0.643   216.47
1900.15    0.639   216.16
1901.15    0.636   215.84
1902.15    0.633   215.52
1903.15    0.629   215.19
1904.15    0.626   214.86
1905.15    0.622   214.53
1906.15    0.619   214.20
1907.15    0.615   213.86
1908.15    0.612   213.51
1909.15    0.608   213.17
1910.15    0.605   212.81
1911.15    0.601   212.46
1912.15    0.597   212.10
1913.15    0.594   211.73
1914.15    0.590   211.37
1915.15    0.586   210.99
1916.15    0.583   210.61
1917.15    0.579   210.23
1918.15    0.575   209.84
1919.15    0.571   209.45
1920.15    0.568   209.05
1921.15    0.564   208.65
1922.15    0.560   208.24
1923.15    0.556   207.82
1924.15    0.552   207.40
1925.15    0.548   206.98
1926.15    0.545   206.54
1927.15    0.541   206.11
1928.15    0.537   205.66
1929.15    0.533   205.21
1930.15    0.529   204.75
1931.15    0.525   204.28
1932.15    0.521   203.81
1933.15    0.517   203.33
1934.15    0.513   202.84
1935.15    0.509   202.35
1936.15    0.504   201.84
1937.15    0.500   201.33
1938.15    0.496   200.81
1939.15    0.492   200.28
1940.15    0.488   199.74
1941.15    0.483   199.19
1942.15    0.479   198.64
1943.15    0.475   198.07
1944.15    0.471   197.49
1945.15    0.466   196.90
1946.15    0.462   196.30
1947.15    0.458   195.69
1948.15    0.453   195.07
1949.15    0.449   194.43
1950.15    0.444   193.79
1951.15    0.440   193.13
1952.15    0.436   192.45
1953.15    0.431   191.76
1954.15    0.426   191.06
1955.15    0.422   190.34
1956.15    0.417   189.61
1957.15    0.413   188.86
1958.15    0.408   188.09
1959.15    0.404   187.31
1960.15    0.399   186.50
1961.15    0.394   185.68
1962.15    0.389   184.84
1963.15    0.385   183.98
1964.15    0.380   183.09
1965.15    0.375   182.19
1966.15    0.370   181.26
1967.15    0.365   180.30
1968.15    0.361   179.32
1969.15    0.356   178.31
1970.15    0.351   177.28
1971.15    0.346   176.21
1972.15    0.341   175.12
1973.15    0.336   173.99
1974.15    0.331   172.82
1975.15    0.326   171.62
1976.15    0.320   170.38
1977.15    0.315   169.10
1978.15    0.310   167.78
1979.15    0.305   166.41
1980.15    0.299   165.00
1981.15    0.294   163.53
1982.15    0.289   162.01
1983.15    0.283   160.43
1984.15    0.278   158.78
1985.15    0.272   157.07
1986.15    0.266   155.29
1987.15    0.261   153.43
1988.15    0.255   151.49
1989.15    0.249   149.45
1990.15    0.243   147.32
1991.15    0.237   145.07
1992.15    0.231   142.70
1993.15    0.224   140.21
1994.15    0.218   137.56
1995.15    0.211   134.74
1996.15    0.204   131.73
1997.15    0.197   128.51
1998.15    0.189   125.04
1999.15    0.182   121.28
2000.15    0.174   117.19
2001.15    0.165   112.69
2002.15    0.157   107.71
2003.15    0.148   102.16
2004.15    0.140    95.92
2005.15    0.131    88.86
2006.15    0.123    80.86
2007.15    0.116    71.82
2008.15    0.111    61.76
2009.15    0.107    50.87
2010.15    0.107    39.55
2011.15    0.109    28.35
2012.15    0.113    17.79
2013.15    0.120     8.25
2014.15    0.129   359.86
2015.15    0.139   352.60
2016.15    0.149   346.36
2017.15    0.161   340.99
2018.15    0.173   336.34
2019.15    0.185   332.29
2020.15    0.197   328.73
2021.15    0.209   325.59
2022.15    0.221   322.78
2023.15    0.233   320.26
2024.15    0.244   317.99
2025.15    0.256   315.92
2026.15    0.267   314.02
2027.15    0.278   312.28
2028.15    0.289   310.67
2029.15    0.299   309.18
2030.15    0.310   307.78
2031.15    0.320   306.48
2032.15    0.330   305.26
2033.15    0.340   304.10
2034.15    0.350   303.02
2035.15    0.359   301.99
2036.15    0.368   301.01
2037.15    0.377   300.08
2038.15    0.386   299.19
2039.15    0.395   298.35
2040.15    0.404   297.54
2041.15    0.412   296.76
2042.15    0.421   296.02
2043.15    0.429   295.30
2044.15    0.437   294.61
2045.15    0.445   293.95
2046.15    0.453   293.31
2047.15    0.460   292.69
2048.15    0.468   292.09
2049.15    0.475   291.51
2050.15    0.483   290.94
2051.15    0.490   290.40
2052.15    0.497   289.87
2053.15    0.504   289.35
2054.15    0.511   288.85
2055.15    0.518   288.36
2056.15    0.524   287.88
2057.15    0.531   287.42
2058.15    0.537   286.97
2059.15    0.544   286.52
2060.15    0.550   286.09
2061.15    0.556   285.67
2062.15    0.562   285.26
2063.15    0.568   284.85
2064.15    0.574   284.46
2065.15    0.580   284.07
2066.15    0.586   283.69
2067.15    0.592   283.31
2068.15    0.597   282.95
2069.15    0.603   282.59
2070.15    0.608   282.24
2071.15    0.614   281.89
2072.15    0.619   281.55
2073.15    0.624   281.22
2074.15    0.629   280.89
2075.15    0.634   280.56
2076.15    0.640   280.25
2077.15    0.645   279.93
2078.15    0.649   279.62
2079.15    0.654   279.32
2080.15    0.659   279.02
2081.15    0.664   278.72
2082.15    0.669   278.43
2083.15    0.673   278.15
2084.15    0.678   277.86
2085.15    0.682   277.58
2086.15    0.687   277.31
2087.15    0.691   277.04
2088.15    0.695   276.77
2089.15    0.700   276.50
2090.15    0.704   276.24
2091.15    0.708   275.98
2092.15    0.712   275.72
2093.15    0.716   275.47
2094.15    0.720   275.22
2095.15    0.724   274.97
2096.15    0.728   274.73
2097.15    0.732   274.49
2098.15    0.736   274.25
2099.15    0.740   274.01
2100.15    0.744   273.77
2101.15    0.747   273.54
2102.15    0.751   273.31
2103.15    0.755   273.08
2104.15    0.758   272.86
2105.15    0.762   272.63
2106.15    0.765   272.41
2107.15    0.769   272.19
2108.15    0.772   271.98
2109.15    0.775   271.76
2110.15    0.779   271.55
2111.15    0.782   271.33
2112.15    0.785   271.12
2113.15    0.788   270.91
2114.15    0.792   270.71
2115.15    0.795   270.50
2116.15    0.798   270.30
2117.15    0.801   270.10
2118.15    0.804   269.90
2119.15    0.807   269.70
2120.15    0.810   269.50
2121.15    0.813   269.30
2122.15    0.816   269.11
2123.15    0.818   268.91
2124.15    0.821   268.72
2125.15    0.824   268.53
2126.15    0.827   268.34
2127.15    0.829   268.15
2128.15    0.832   267.96
2129.15    0.835   267.78
2130.15    0.837   267.59
2131.15    0.840   267.41
2132.15    0.842   267.23
2133.15    0.845   267.05
2134.15    0.847   266.87
2135.15    0.850   266.69
2136.15    0.852   266.51
2137.15    0.854   266.33
2138.15    0.857   266.15
2139.15    0.859   265.98
2140.15    0.861   265.80
2141.15    0.863   265.63
2142.15    0.866   265.46
2143.15    0.868   265.28
2144.15    0.870   265.11
2145.15    0.872   264.94
2146.15    0.874   264.77
2147.15    0.876   264.60
2148.15    0.878   264.44
2149.15    0.880   264.27
2150.15    0.882   264.10
2151.15    0.884   263.94
2152.15    0.886   263.77
2153.15    0.888   263.61
2154.15    0.890   263.44
2155.15    0.892   263.28
2156.15    0.893   263.12
2157.15    0.895   262.96
2158.15    0.897   262.80
2159.15    0.899   262.64
2160.15    0.900   262.48
2161.15    0.902   262.32
2162.15    0.904   262.16
2163.15    0.905   262.00
2164.15    0.907   261.84
2165.15    0.908   261.69
2166.15    0.910   261.53
2167.15    0.911   261.37
2168.15    0.913   261.22
2169.15    0.914   261.06
2170.15    0.916   260.91
2171.15    0.917   260.76
2172.15    0.918   260.60
2173.15    0.920   260.45
2174.15    0.921   260.30
2175.15    0.922   260.14
2176.15    0.924   259.99
2177.15    0.925   259.84
2178.15    0.926   259.69
2179.15    0.927   259.54
2180.15    0.929   259.39
2181.15    0.930   259.24
2182.15    0.931   259.09
2183.15    0.932   258.94
2184.15    0.933   258.79
2185.15    0.934   258.65
2186.15    0.935   258.50
2187.15    0.936   258.35
2188.15    0.937   258.20
2189.15    0.938   258.06
2190.15    0.939   257.91
2191.15    0.940   257.76
2192.15    0.941   257.62
2193.15    0.942   257.47
2194.15    0.943   257.33
2195.15    0.944   257.18
2196.15    0.944   257.04
2197.15    0.945   256.89
2198.15    0.946   256.75
2199.15    0.947   256.60
2200.15    0.947   256.46
2201.15    0.948   256.31
2202.15    0.949   256.17
2203.15    0.950   256.03
2204.15    0.950   255.88
2205.15    0.951   255.74
2206.15    0.951   255.60
2207.15    0.952   255.46
2208.15    0.953   255.31
2209.15    0.953   255.17
2210.15    0.954   255.03
2211.15    0.954   254.89
2212.15    0.955   254.75
2213.15    0.955   254.60
2214.15    0.955   254.46
2215.15    0.956   254.32
2216.15    0.956   254.18
2217.15    0.957   254.04
2218.15    0.957   253.90
2219.15    0.957   253.76
2220.15    0.958   253.61
2221.15    0.958   253.47
2222.15    0.958   253.33
2223.15    0.958   253.19
2224.15    0.959   253.05
2225.15    0.959   252.91
2226.15    0.959   252.77
2227.15    0.959   252.63
2228.15    0.959   252.49
2229.15    0.960   252.35
2230.15    0.960   252.21
2231.15    0.960   252.07
2232.15    0.960   251.93
2233.15    0.960   251.79
2234.15    0.960   251.65
2235.15    0.960   251.51
2236.15    0.960   251.37
2237.15    0.960   251.23
2238.15    0.960   251.09
2239.15    0.960   250.95
2240.15    0.960   250.81
2241.15    0.960   250.67
2242.15    0.960   250.53
2243.15    0.959   250.39
2244.15    0.959   250.25
2245.15    0.959   250.11
2246.15    0.959   249.97
2247.15    0.959   249.82
2248.15    0.959   249.68
2249.15    0.958   249.54
2250.15    0.958   249.40
2251.15    0.958   249.26
2252.15    0.957   249.12
2253.15    0.957   248.98
2254.15    0.957   248.84
2255.15    0.956   248.70
2256.15    0.956   248.56
2257.15    0.956   248.41
2258.15    0.955   248.27
2259.15    0.955   248.13
2260.15    0.954   247.99
2261.15    0.954   247.85
2262.15    0.953   247.71
2263.15    0.953   247.56
2264.15    0.952   247.42
2265.15    0.952   247.28
2266.15    0.951   247.14
2267.15    0.951   246.99
2268.15    0.950   246.85
2269.15    0.950   246.71
2270.15    0.949   246.56
2271.15    0.948   246.42
2272.15    0.948   246.28
2273.15    0.947   246.13
2274.15    0.946   245.99
2275.15    0.946   245.84
2276.15    0.945   245.70
2277.15    0.944   245.55
2278.15    0.943   245.41
2279.15    0.942   245.26
2280.15    0.942   245.12
2281.15    0.941   244.97
2282.15    0.940   244.83
2283.15    0.939   244.68
2284.15    0.938   244.53
2285.15    0.937   244.39
2286.15    0.936   244.24
2287.15    0.936   244.09






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 17:06:55



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