Double Star Calculator - Orbit

Orbital Elements for BU290AB
WDS: BU290AB WDS ID/Discoverer
P: 420.000 Orbital period (years)
a: 2.43 Semi-major axis (arcseconds)
i: 79.9 Inclination (degrees)
Ω: 40.3 Longitude of ascending node (degrees)
T: 1800.000 Epoch of periastron passage (year)
e: 0.59 Eccentricity
ω: 26.32 Longitude of periastron (degrees)
Start-Year: 1815.0 Year
End-Year: 2235.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU290AB
Position: 222637.38+042337.1 Epoch-2000 right ascension and declination
WDS-ID: 22266+0424 WDS designation
Discoverer Code: BU290AB Discover designation and components
ADS number: 15935 Aitken Double Star catalog
HD number: 212754 HD catalog number
Hipparcos number: 110785 Hipparcos catalog number
V1: 5.81 Magnitude of the primary
V2: 12.5 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1990 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: Hle1994 Reference

Double Star Orbit for BU290AB



WDS 6th Orbit including measures of BU290AB

-- 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 BU290AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.320   226.28
--------------------------
1815.00    0.274    88.67
1816.00    0.245    99.42
1817.00    0.226   112.50
1818.00    0.220   127.11
1819.00    0.228   141.59
1820.00    0.249   154.34
1821.00    0.279   164.71
1822.00    0.317   172.83
1823.00    0.359   179.14
1824.00    0.404   184.08
1825.00    0.451   188.01
1826.00    0.499   191.19
1827.00    0.548   193.81
1828.00    0.598   196.00
1829.00    0.647   197.85
1830.00    0.697   199.44
1831.00    0.746   200.81
1832.00    0.796   202.02
1833.00    0.845   203.09
1834.00    0.893   204.04
1835.00    0.941   204.89
1836.00    0.989   205.66
1837.00    1.036   206.36
1838.00    1.083   206.99
1839.00    1.129   207.58
1840.00    1.175   208.12
1841.00    1.220   208.62
1842.00    1.265   209.08
1843.00    1.309   209.52
1844.00    1.353   209.92
1845.00    1.396   210.30
1846.00    1.439   210.66
1847.00    1.481   210.99
1848.00    1.522   211.31
1849.00    1.563   211.61
1850.00    1.603   211.90
1851.00    1.643   212.17
1852.00    1.682   212.43
1853.00    1.721   212.68
1854.00    1.759   212.91
1855.00    1.797   213.14
1856.00    1.834   213.36
1857.00    1.871   213.57
1858.00    1.907   213.77
1859.00    1.942   213.96
1860.00    1.978   214.15
1861.00    2.012   214.33
1862.00    2.046   214.50
1863.00    2.080   214.67
1864.00    2.113   214.83
1865.00    2.146   214.99
1866.00    2.178   215.15
1867.00    2.210   215.29
1868.00    2.241   215.44
1869.00    2.272   215.58
1870.00    2.302   215.72
1871.00    2.332   215.85
1872.00    2.362   215.98
1873.00    2.391   216.11
1874.00    2.419   216.23
1875.00    2.448   216.35
1876.00    2.475   216.47
1877.00    2.503   216.59
1878.00    2.530   216.70
1879.00    2.556   216.81
1880.00    2.582   216.92
1881.00    2.608   217.03
1882.00    2.633   217.13
1883.00    2.658   217.23
1884.00    2.683   217.33
1885.00    2.707   217.43
1886.00    2.731   217.53
1887.00    2.754   217.62
1888.00    2.777   217.72
1889.00    2.800   217.81
1890.00    2.822   217.90
1891.00    2.844   217.99
1892.00    2.865   218.08
1893.00    2.887   218.16
1894.00    2.907   218.25
1895.00    2.928   218.33
1896.00    2.948   218.42
1897.00    2.968   218.50
1898.00    2.987   218.58
1899.00    3.006   218.66
1900.00    3.025   218.74
1901.00    3.043   218.82
1902.00    3.062   218.89
1903.00    3.079   218.97
1904.00    3.097   219.04
1905.00    3.114   219.12
1906.00    3.131   219.19
1907.00    3.147   219.26
1908.00    3.163   219.34
1909.00    3.179   219.41
1910.00    3.195   219.48
1911.00    3.210   219.55
1912.00    3.225   219.62
1913.00    3.240   219.69
1914.00    3.254   219.75
1915.00    3.268   219.82
1916.00    3.282   219.89
1917.00    3.295   219.95
1918.00    3.308   220.02
1919.00    3.321   220.09
1920.00    3.334   220.15
1921.00    3.346   220.21
1922.00    3.358   220.28
1923.00    3.370   220.34
1924.00    3.381   220.40
1925.00    3.392   220.47
1926.00    3.403   220.53
1927.00    3.414   220.59
1928.00    3.424   220.65
1929.00    3.434   220.71
1930.00    3.444   220.77
1931.00    3.454   220.83
1932.00    3.463   220.89
1933.00    3.472   220.95
1934.00    3.481   221.01
1935.00    3.489   221.07
1936.00    3.498   221.13
1937.00    3.506   221.19
1938.00    3.513   221.25
1939.00    3.521   221.30
1940.00    3.528   221.36
1941.00    3.535   221.42
1942.00    3.542   221.48
1943.00    3.548   221.53
1944.00    3.555   221.59
1945.00    3.561   221.65
1946.00    3.566   221.70
1947.00    3.572   221.76
1948.00    3.577   221.82
1949.00    3.582   221.87
1950.00    3.587   221.93
1951.00    3.591   221.98
1952.00    3.596   222.04
1953.00    3.600   222.09
1954.00    3.604   222.15
1955.00    3.607   222.20
1956.00    3.611   222.26
1957.00    3.614   222.31
1958.00    3.617   222.37
1959.00    3.620   222.42
1960.00    3.622   222.48
1961.00    3.624   222.53
1962.00    3.626   222.59
1963.00    3.628   222.64
1964.00    3.630   222.70
1965.00    3.631   222.75
1966.00    3.632   222.81
1967.00    3.633   222.86
1968.00    3.634   222.91
1969.00    3.634   222.97
1970.00    3.635   223.02
1971.00    3.635   223.08
1972.00    3.634   223.13
1973.00    3.634   223.19
1974.00    3.633   223.24
1975.00    3.633   223.29
1976.00    3.632   223.35
1977.00    3.630   223.40
1978.00    3.629   223.46
1979.00    3.627   223.51
1980.00    3.625   223.57
1981.00    3.623   223.62
1982.00    3.621   223.68
1983.00    3.619   223.73
1984.00    3.616   223.78
1985.00    3.613   223.84
1986.00    3.610   223.89
1987.00    3.607   223.95
1988.00    3.603   224.00
1989.00    3.599   224.06
1990.00    3.596   224.12
1991.00    3.591   224.17
1992.00    3.587   224.23
1993.00    3.583   224.28
1994.00    3.578   224.34
1995.00    3.573   224.39
1996.00    3.568   224.45
1997.00    3.563   224.51
1998.00    3.557   224.56
1999.00    3.552   224.62
2000.00    3.546   224.68
2001.00    3.540   224.73
2002.00    3.533   224.79
2003.00    3.527   224.85
2004.00    3.520   224.91
2005.00    3.513   224.96
2006.00    3.506   225.02
2007.00    3.499   225.08
2008.00    3.492   225.14
2009.00    3.484   225.20
2010.00    3.476   225.26
2011.00    3.468   225.32
2012.00    3.460   225.38
2013.00    3.452   225.44
2014.00    3.443   225.50
2015.00    3.434   225.56
2016.00    3.425   225.62
2017.00    3.416   225.68
2018.00    3.407   225.74
2019.00    3.397   225.80
2020.00    3.388   225.87
2021.00    3.378   225.93
2022.00    3.368   225.99
2023.00    3.358   226.05
2024.00    3.347   226.12
2025.00    3.337   226.18
2026.00    3.326   226.25
2027.00    3.315   226.31
2028.00    3.304   226.38
2029.00    3.292   226.44
2030.00    3.281   226.51
2031.00    3.269   226.58
2032.00    3.257   226.64
2033.00    3.245   226.71
2034.00    3.233   226.78
2035.00    3.220   226.85
2036.00    3.208   226.92
2037.00    3.195   226.99
2038.00    3.182   227.06
2039.00    3.169   227.13
2040.00    3.156   227.20
2041.00    3.142   227.27
2042.00    3.128   227.35
2043.00    3.114   227.42
2044.00    3.100   227.49
2045.00    3.086   227.57
2046.00    3.072   227.65
2047.00    3.057   227.72
2048.00    3.042   227.80
2049.00    3.028   227.88
2050.00    3.012   227.95
2051.00    2.997   228.03
2052.00    2.982   228.11
2053.00    2.966   228.20
2054.00    2.950   228.28
2055.00    2.934   228.36
2056.00    2.918   228.44
2057.00    2.902   228.53
2058.00    2.885   228.61
2059.00    2.869   228.70
2060.00    2.852   228.79
2061.00    2.835   228.88
2062.00    2.818   228.97
2063.00    2.800   229.06
2064.00    2.783   229.15
2065.00    2.765   229.24
2066.00    2.747   229.34
2067.00    2.729   229.43
2068.00    2.711   229.53
2069.00    2.692   229.63
2070.00    2.674   229.73
2071.00    2.655   229.83
2072.00    2.636   229.93
2073.00    2.617   230.03
2074.00    2.598   230.14
2075.00    2.578   230.25
2076.00    2.559   230.36
2077.00    2.539   230.47
2078.00    2.519   230.58
2079.00    2.499   230.69
2080.00    2.479   230.81
2081.00    2.458   230.93
2082.00    2.438   231.04
2083.00    2.417   231.17
2084.00    2.396   231.29
2085.00    2.375   231.42
2086.00    2.353   231.54
2087.00    2.332   231.67
2088.00    2.310   231.81
2089.00    2.289   231.94
2090.00    2.267   232.08
2091.00    2.245   232.22
2092.00    2.222   232.37
2093.00    2.200   232.51
2094.00    2.177   232.66
2095.00    2.154   232.82
2096.00    2.132   232.97
2097.00    2.108   233.13
2098.00    2.085   233.29
2099.00    2.062   233.46
2100.00    2.038   233.63
2101.00    2.015   233.81
2102.00    1.991   233.98
2103.00    1.967   234.17
2104.00    1.943   234.35
2105.00    1.918   234.55
2106.00    1.894   234.74
2107.00    1.869   234.95
2108.00    1.844   235.15
2109.00    1.819   235.37
2110.00    1.794   235.59
2111.00    1.769   235.81
2112.00    1.744   236.05
2113.00    1.718   236.29
2114.00    1.692   236.53
2115.00    1.667   236.79
2116.00    1.641   237.05
2117.00    1.614   237.32
2118.00    1.588   237.60
2119.00    1.562   237.89
2120.00    1.535   238.19
2121.00    1.509   238.49
2122.00    1.482   238.82
2123.00    1.455   239.15
2124.00    1.428   239.49
2125.00    1.401   239.85
2126.00    1.374   240.22
2127.00    1.346   240.61
2128.00    1.319   241.01
2129.00    1.291   241.43
2130.00    1.264   241.87
2131.00    1.236   242.33
2132.00    1.208   242.81
2133.00    1.180   243.31
2134.00    1.152   243.84
2135.00    1.124   244.39
2136.00    1.096   244.98
2137.00    1.068   245.59
2138.00    1.040   246.23
2139.00    1.012   246.91
2140.00    0.984   247.63
2141.00    0.956   248.40
2142.00    0.928   249.20
2143.00    0.899   250.06
2144.00    0.871   250.98
2145.00    0.843   251.95
2146.00    0.816   252.99
2147.00    0.788   254.11
2148.00    0.760   255.31
2149.00    0.733   256.59
2150.00    0.706   257.98
2151.00    0.679   259.47
2152.00    0.653   261.09
2153.00    0.627   262.84
2154.00    0.601   264.74
2155.00    0.577   266.81
2156.00    0.552   269.06
2157.00    0.529   271.51
2158.00    0.507   274.18
2159.00    0.485   277.10
2160.00    0.465   280.28
2161.00    0.446   283.73
2162.00    0.429   287.48
2163.00    0.414   291.51
2164.00    0.401   295.83
2165.00    0.390   300.42
2166.00    0.382   305.23
2167.00    0.376   310.23
2168.00    0.373   315.33
2169.00    0.374   320.47
2170.00    0.376   325.58
2171.00    0.382   330.56
2172.00    0.391   335.37
2173.00    0.401   339.94
2174.00    0.415   344.25
2175.00    0.430   348.28
2176.00    0.447   352.01
2177.00    0.465   355.46
2178.00    0.485   358.64
2179.00    0.506     1.57
2180.00    0.528     4.25
2181.00    0.550     6.72
2182.00    0.574     8.99
2183.00    0.598    11.08
2184.00    0.622    13.01
2185.00    0.646    14.79
2186.00    0.671    16.44
2187.00    0.695    17.98
2188.00    0.720    19.41
2189.00    0.745    20.75
2190.00    0.769    22.00
2191.00    0.793    23.17
2192.00    0.816    24.28
2193.00    0.839    25.33
2194.00    0.862    26.32
2195.00    0.884    27.26
2196.00    0.905    28.15
2197.00    0.925    29.01
2198.00    0.944    29.83
2199.00    0.963    30.62
2200.00    0.980    31.38
2201.00    0.995    32.11
2202.00    1.010    32.83
2203.00    1.023    33.52
2204.00    1.034    34.20
2205.00    1.044    34.86
2206.00    1.051    35.51
2207.00    1.057    36.16
2208.00    1.060    36.80
2209.00    1.062    37.43
2210.00    1.060    38.07
2211.00    1.057    38.71
2212.00    1.050    39.36
2213.00    1.041    40.01
2214.00    1.029    40.68
2215.00    1.014    41.37
2216.00    0.996    42.07
2217.00    0.976    42.81
2218.00    0.952    43.58
2219.00    0.926    44.39
2220.00    0.896    45.26
2221.00    0.864    46.18
2222.00    0.830    47.18
2223.00    0.793    48.27
2224.00    0.754    49.47
2225.00    0.713    50.80
2226.00    0.670    52.30
2227.00    0.626    54.01
2228.00    0.580    55.98
2229.00    0.534    58.30
2230.00    0.488    61.05
2231.00    0.441    64.38
2232.00    0.396    68.49
2233.00    0.352    73.65
2234.00    0.310    80.22






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 18:39:58



www.stella-vega.de