Double Star Calculator - Orbit

Orbital Elements for BU938
WDS: BU938 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.814 Semi-major axis (arcseconds)
i: 95.4 Inclination (degrees)
Ω: 121.4 Longitude of ascending node (degrees)
T: 2029.320 Epoch of periastron passage (year)
e: 0.489 Eccentricity
ω: 11.5 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU938
Position: 140619.02-263445.4 Epoch-2000 right ascension and declination
WDS-ID: 14063-2635 WDS designation
Discoverer Code: BU938 Discover designation and components
ADS number: 9106 Aitken Double Star catalog
HD number: 12033 HD catalog number
Hipparcos number: 68821 Hipparcos catalog number
V1: 8.14 Magnitude of the primary
V2: 8.23 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 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: Tok2022g Reference

Double Star Orbit for BU938



WDS 6th Orbit including measures of BU938

-- 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 BU938
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.416   120.95
--------------------------
1775.00    1.193   300.42
1776.00    1.192   300.39
1777.00    1.191   300.37
1778.00    1.189   300.34
1779.00    1.188   300.31
1780.00    1.187   300.28
1781.00    1.186   300.26
1782.00    1.185   300.23
1783.00    1.183   300.20
1784.00    1.182   300.17
1785.00    1.180   300.14
1786.00    1.179   300.12
1787.00    1.177   300.09
1788.00    1.176   300.06
1789.00    1.174   300.03
1790.00    1.172   300.00
1791.00    1.170   299.97
1792.00    1.168   299.95
1793.00    1.166   299.92
1794.00    1.164   299.89
1795.00    1.162   299.86
1796.00    1.160   299.83
1797.00    1.158   299.80
1798.00    1.156   299.77
1799.00    1.154   299.74
1800.00    1.151   299.71
1801.00    1.149   299.68
1802.00    1.147   299.65
1803.00    1.144   299.62
1804.00    1.142   299.59
1805.00    1.139   299.56
1806.00    1.136   299.53
1807.00    1.134   299.50
1808.00    1.131   299.47
1809.00    1.128   299.44
1810.00    1.125   299.41
1811.00    1.122   299.38
1812.00    1.119   299.35
1813.00    1.116   299.32
1814.00    1.113   299.29
1815.00    1.110   299.25
1816.00    1.107   299.22
1817.00    1.104   299.19
1818.00    1.100   299.16
1819.00    1.097   299.13
1820.00    1.093   299.09
1821.00    1.090   299.06
1822.00    1.086   299.03
1823.00    1.083   298.99
1824.00    1.079   298.96
1825.00    1.076   298.93
1826.00    1.072   298.89
1827.00    1.068   298.86
1828.00    1.064   298.82
1829.00    1.060   298.79
1830.00    1.056   298.75
1831.00    1.052   298.72
1832.00    1.048   298.68
1833.00    1.044   298.65
1834.00    1.040   298.61
1835.00    1.036   298.58
1836.00    1.031   298.54
1837.00    1.027   298.50
1838.00    1.022   298.46
1839.00    1.018   298.43
1840.00    1.014   298.39
1841.00    1.009   298.35
1842.00    1.004   298.31
1843.00    1.000   298.27
1844.00    0.995   298.23
1845.00    0.990   298.19
1846.00    0.985   298.15
1847.00    0.980   298.11
1848.00    0.975   298.07
1849.00    0.970   298.03
1850.00    0.965   297.99
1851.00    0.960   297.95
1852.00    0.955   297.90
1853.00    0.950   297.86
1854.00    0.944   297.82
1855.00    0.939   297.77
1856.00    0.934   297.73
1857.00    0.928   297.68
1858.00    0.923   297.64
1859.00    0.917   297.59
1860.00    0.912   297.54
1861.00    0.906   297.50
1862.00    0.900   297.45
1863.00    0.894   297.40
1864.00    0.889   297.35
1865.00    0.883   297.30
1866.00    0.877   297.25
1867.00    0.871   297.20
1868.00    0.865   297.15
1869.00    0.858   297.09
1870.00    0.852   297.04
1871.00    0.846   296.99
1872.00    0.840   296.93
1873.00    0.833   296.88
1874.00    0.827   296.82
1875.00    0.821   296.76
1876.00    0.814   296.70
1877.00    0.808   296.64
1878.00    0.801   296.58
1879.00    0.794   296.52
1880.00    0.788   296.46
1881.00    0.781   296.39
1882.00    0.774   296.33
1883.00    0.767   296.26
1884.00    0.760   296.20
1885.00    0.753   296.13
1886.00    0.746   296.06
1887.00    0.739   295.99
1888.00    0.732   295.91
1889.00    0.725   295.84
1890.00    0.718   295.77
1891.00    0.710   295.69
1892.00    0.703   295.61
1893.00    0.695   295.53
1894.00    0.688   295.45
1895.00    0.680   295.36
1896.00    0.673   295.28
1897.00    0.665   295.19
1898.00    0.658   295.10
1899.00    0.650   295.01
1900.00    0.642   294.92
1901.00    0.634   294.82
1902.00    0.626   294.72
1903.00    0.618   294.62
1904.00    0.610   294.52
1905.00    0.602   294.41
1906.00    0.594   294.30
1907.00    0.586   294.19
1908.00    0.578   294.07
1909.00    0.570   293.95
1910.00    0.561   293.83
1911.00    0.553   293.71
1912.00    0.544   293.57
1913.00    0.536   293.44
1914.00    0.527   293.30
1915.00    0.519   293.16
1916.00    0.510   293.01
1917.00    0.502   292.86
1918.00    0.493   292.70
1919.00    0.484   292.54
1920.00    0.475   292.37
1921.00    0.466   292.19
1922.00    0.458   292.01
1923.00    0.449   291.81
1924.00    0.440   291.62
1925.00    0.431   291.41
1926.00    0.421   291.19
1927.00    0.412   290.97
1928.00    0.403   290.73
1929.00    0.394   290.49
1930.00    0.385   290.23
1931.00    0.375   289.96
1932.00    0.366   289.67
1933.00    0.357   289.37
1934.00    0.347   289.06
1935.00    0.338   288.72
1936.00    0.328   288.37
1937.00    0.319   287.99
1938.00    0.309   287.60
1939.00    0.300   287.18
1940.00    0.290   286.72
1941.00    0.281   286.24
1942.00    0.271   285.73
1943.00    0.261   285.18
1944.00    0.252   284.58
1945.00    0.242   283.94
1946.00    0.232   283.24
1947.00    0.222   282.48
1948.00    0.213   281.65
1949.00    0.203   280.75
1950.00    0.193   279.75
1951.00    0.184   278.65
1952.00    0.174   277.43
1953.00    0.165   276.06
1954.00    0.155   274.53
1955.00    0.146   272.80
1956.00    0.137   270.84
1957.00    0.128   268.59
1958.00    0.119   266.00
1959.00    0.110   263.01
1960.00    0.102   259.51
1961.00    0.094   255.41
1962.00    0.087   250.58
1963.00    0.080   244.91
1964.00    0.074   238.30
1965.00    0.070   230.69
1966.00    0.066   222.18
1967.00    0.065   213.02
1968.00    0.065   203.63
1969.00    0.066   194.49
1970.00    0.070   186.01
1971.00    0.074   178.44
1972.00    0.080   171.86
1973.00    0.087   166.23
1974.00    0.094   161.43
1975.00    0.102   157.35
1976.00    0.110   153.87
1977.00    0.119   150.88
1978.00    0.128   148.30
1979.00    0.137   146.06
1980.00    0.146   144.10
1981.00    0.155   142.37
1982.00    0.164   140.83
1983.00    0.174   139.46
1984.00    0.183   138.23
1985.00    0.193   137.12
1986.00    0.202   136.11
1987.00    0.211   135.20
1988.00    0.221   134.36
1989.00    0.230   133.58
1990.00    0.239   132.87
1991.00    0.248   132.21
1992.00    0.257   131.59
1993.00    0.266   131.02
1994.00    0.275   130.48
1995.00    0.283   129.98
1996.00    0.292   129.51
1997.00    0.300   129.06
1998.00    0.308   128.63
1999.00    0.316   128.23
2000.00    0.324   127.85
2001.00    0.331   127.48
2002.00    0.339   127.13
2003.00    0.346   126.80
2004.00    0.353   126.48
2005.00    0.359   126.17
2006.00    0.366   125.87
2007.00    0.372   125.58
2008.00    0.378   125.31
2009.00    0.383   125.04
2010.00    0.388   124.77
2011.00    0.393   124.52
2012.00    0.398   124.27
2013.00    0.402   124.02
2014.00    0.405   123.78
2015.00    0.409   123.54
2016.00    0.412   123.31
2017.00    0.414   123.08
2018.00    0.416   122.85
2019.00    0.418   122.63
2020.00    0.419   122.40
2021.00    0.420   122.18
2022.00    0.420   121.96
2023.00    0.420   121.74
2024.00    0.419   121.52
2025.00    0.418   121.29
2026.00    0.416   121.07
2027.00    0.414   120.84
2028.00    0.412   120.61
2029.00    0.409   120.38
2030.00    0.405   120.14
2031.00    0.401   119.90
2032.00    0.397   119.66
2033.00    0.392   119.40
2034.00    0.386   119.14
2035.00    0.381   118.88
2036.00    0.374   118.60
2037.00    0.368   118.32
2038.00    0.361   118.02
2039.00    0.353   117.72
2040.00    0.345   117.40
2041.00    0.337   117.06
2042.00    0.329   116.71
2043.00    0.320   116.33
2044.00    0.310   115.94
2045.00    0.301   115.52
2046.00    0.291   115.07
2047.00    0.281   114.59
2048.00    0.271   114.08
2049.00    0.261   113.53
2050.00    0.250   112.92
2051.00    0.239   112.27
2052.00    0.228   111.55
2053.00    0.217   110.76
2054.00    0.205   109.88
2055.00    0.194   108.90
2056.00    0.183   107.79
2057.00    0.171   106.54
2058.00    0.159   105.10
2059.00    0.148   103.44
2060.00    0.136   101.50
2061.00    0.125    99.21
2062.00    0.114    96.45
2063.00    0.103    93.10
2064.00    0.092    88.96
2065.00    0.082    83.77
2066.00    0.073    77.20
2067.00    0.065    68.86
2068.00    0.058    58.43
2069.00    0.054    45.97
2070.00    0.053    32.24
2071.00    0.055    18.69
2072.00    0.060     6.64
2073.00    0.066   356.68
2074.00    0.075   348.77
2075.00    0.084   342.54
2076.00    0.094   337.61
2077.00    0.105   333.67
2078.00    0.116   330.47
2079.00    0.128   327.84
2080.00    0.139   325.64
2081.00    0.151   323.78
2082.00    0.163   322.18
2083.00    0.175   320.81
2084.00    0.186   319.60
2085.00    0.198   318.55
2086.00    0.210   317.61
2087.00    0.222   316.77
2088.00    0.234   316.01
2089.00    0.246   315.33
2090.00    0.257   314.71
2091.00    0.269   314.15
2092.00    0.281   313.63
2093.00    0.292   313.15
2094.00    0.304   312.71
2095.00    0.316   312.30
2096.00    0.327   311.93
2097.00    0.338   311.57
2098.00    0.350   311.24
2099.00    0.361   310.93
2100.00    0.372   310.64
2101.00    0.383   310.36
2102.00    0.394   310.11
2103.00    0.405   309.86
2104.00    0.416   309.63
2105.00    0.427   309.41
2106.00    0.438   309.20
2107.00    0.448   309.00
2108.00    0.459   308.81
2109.00    0.469   308.63
2110.00    0.480   308.45
2111.00    0.490   308.29
2112.00    0.500   308.13
2113.00    0.511   307.97
2114.00    0.521   307.83
2115.00    0.531   307.68
2116.00    0.541   307.55
2117.00    0.551   307.42
2118.00    0.560   307.29
2119.00    0.570   307.17
2120.00    0.580   307.05
2121.00    0.589   306.93
2122.00    0.599   306.82
2123.00    0.608   306.71
2124.00    0.617   306.61
2125.00    0.626   306.51
2126.00    0.636   306.41
2127.00    0.645   306.31
2128.00    0.654   306.22
2129.00    0.662   306.13
2130.00    0.671   306.04
2131.00    0.680   305.96
2132.00    0.689   305.87
2133.00    0.697   305.79
2134.00    0.706   305.71
2135.00    0.714   305.63
2136.00    0.722   305.56
2137.00    0.730   305.48
2138.00    0.739   305.41
2139.00    0.747   305.34
2140.00    0.755   305.27
2141.00    0.763   305.20
2142.00    0.770   305.14
2143.00    0.778   305.07
2144.00    0.786   305.01
2145.00    0.793   304.94
2146.00    0.801   304.88
2147.00    0.808   304.82
2148.00    0.816   304.76
2149.00    0.823   304.70
2150.00    0.830   304.65
2151.00    0.837   304.59
2152.00    0.844   304.54
2153.00    0.851   304.48
2154.00    0.858   304.43
2155.00    0.865   304.37
2156.00    0.872   304.32
2157.00    0.878   304.27
2158.00    0.885   304.22
2159.00    0.892   304.17
2160.00    0.898   304.12
2161.00    0.904   304.07
2162.00    0.911   304.03
2163.00    0.917   303.98
2164.00    0.923   303.93
2165.00    0.929   303.89
2166.00    0.935   303.84
2167.00    0.941   303.80
2168.00    0.947   303.75
2169.00    0.953   303.71
2170.00    0.958   303.67
2171.00    0.964   303.63
2172.00    0.970   303.58
2173.00    0.975   303.54
2174.00    0.980   303.50
2175.00    0.986   303.46
2176.00    0.991   303.42
2177.00    0.996   303.38
2178.00    1.001   303.34
2179.00    1.006   303.30
2180.00    1.011   303.26
2181.00    1.016   303.23
2182.00    1.021   303.19
2183.00    1.026   303.15
2184.00    1.031   303.11
2185.00    1.035   303.08
2186.00    1.040   303.04
2187.00    1.044   303.01
2188.00    1.049   302.97
2189.00    1.053   302.93
2190.00    1.058   302.90
2191.00    1.062   302.86
2192.00    1.066   302.83
2193.00    1.070   302.80
2194.00    1.074   302.76
2195.00    1.078   302.73
2196.00    1.082   302.69
2197.00    1.086   302.66
2198.00    1.090   302.63
2199.00    1.093   302.59
2200.00    1.097   302.56
2201.00    1.100   302.53
2202.00    1.104   302.50
2203.00    1.107   302.46
2204.00    1.111   302.43
2205.00    1.114   302.40
2206.00    1.117   302.37
2207.00    1.120   302.34
2208.00    1.124   302.31
2209.00    1.127   302.28
2210.00    1.130   302.25
2211.00    1.133   302.22
2212.00    1.135   302.18
2213.00    1.138   302.15
2214.00    1.141   302.12
2215.00    1.144   302.09
2216.00    1.146   302.06
2217.00    1.149   302.03
2218.00    1.151   302.01
2219.00    1.154   301.98
2220.00    1.156   301.95
2221.00    1.158   301.92
2222.00    1.160   301.89
2223.00    1.163   301.86
2224.00    1.165   301.83
2225.00    1.167   301.80
2226.00    1.169   301.77
2227.00    1.171   301.74
2228.00    1.173   301.72
2229.00    1.174   301.69
2230.00    1.176   301.66
2231.00    1.178   301.63
2232.00    1.179   301.60
2233.00    1.181   301.57
2234.00    1.182   301.55
2235.00    1.184   301.52
2236.00    1.185   301.49
2237.00    1.186   301.46
2238.00    1.188   301.43
2239.00    1.189   301.41
2240.00    1.190   301.38
2241.00    1.191   301.35
2242.00    1.192   301.32
2243.00    1.193   301.30
2244.00    1.194   301.27
2245.00    1.195   301.24
2246.00    1.196   301.21
2247.00    1.196   301.19
2248.00    1.197   301.16
2249.00    1.198   301.13
2250.00    1.198   301.10
2251.00    1.199   301.08
2252.00    1.199   301.05
2253.00    1.199   301.02
2254.00    1.200   301.00
2255.00    1.200   300.97
2256.00    1.200   300.94
2257.00    1.200   300.91
2258.00    1.200   300.89
2259.00    1.200   300.86
2260.00    1.200   300.83
2261.00    1.200   300.81
2262.00    1.200   300.78
2263.00    1.200   300.75
2264.00    1.199   300.72
2265.00    1.199   300.70
2266.00    1.199   300.67
2267.00    1.198   300.64
2268.00    1.198   300.61
2269.00    1.197   300.59
2270.00    1.197   300.56
2271.00    1.196   300.53
2272.00    1.195   300.50
2273.00    1.194   300.48
2274.00    1.193   300.45






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 17:02:34



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