Double Star Calculator - Orbit

Orbital Elements for BU1127AA,B
WDS: BU1127AA,B WDS ID/Discoverer
P: 281.470 Orbital period (years)
a: 0.75 Semi-major axis (arcseconds)
i: 146.4 Inclination (degrees)
Ω: 73.2 Longitude of ascending node (degrees)
T: 2070.250 Epoch of periastron passage (year)
e: 0.298 Eccentricity
ω: 135.3 Longitude of periastron (degrees)
Start-Year: 1884.2649999999999 Year
End-Year: 2165.735 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1127AA,B
Position: 180230.89+441402.6 Epoch-2000 right ascension and declination
WDS-ID: 18025+4414 WDS designation
Discoverer Code: BU1127AA,B Discover designation and components
ADS number: 11010 Aitken Double Star catalog
HD number: 165170 HD catalog number
Hipparcos number: 88350 Hipparcos catalog number
V1: 7.31 Magnitude of the primary
V2: 9.20 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Cve2016c Reference

Double Star Orbit for BU1127AA,B



WDS 6th Orbit including measures of BU1127AA,B

-- 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 BU1127AA,B
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.626    32.65
--------------------------
1884.26    0.761   150.19
1885.26    0.764   149.21
1886.26    0.767   148.23
1887.26    0.771   147.26
1888.26    0.774   146.30
1889.26    0.778   145.36
1890.26    0.781   144.41
1891.26    0.785   143.48
1892.26    0.788   142.55
1893.26    0.791   141.64
1894.26    0.795   140.73
1895.26    0.798   139.83
1896.26    0.802   138.93
1897.26    0.805   138.04
1898.26    0.808   137.17
1899.26    0.812   136.29
1900.26    0.815   135.43
1901.26    0.818   134.57
1902.26    0.821   133.72
1903.26    0.825   132.88
1904.26    0.828   132.04
1905.26    0.831   131.21
1906.26    0.834   130.38
1907.26    0.838   129.56
1908.26    0.841   128.75
1909.26    0.844   127.94
1910.26    0.847   127.14
1911.26    0.850   126.35
1912.26    0.853   125.56
1913.26    0.856   124.78
1914.26    0.859   124.00
1915.26    0.862   123.22
1916.26    0.864   122.46
1917.26    0.867   121.69
1918.26    0.870   120.94
1919.26    0.873   120.18
1920.26    0.875   119.43
1921.26    0.878   118.69
1922.26    0.880   117.95
1923.26    0.883   117.21
1924.26    0.885   116.48
1925.26    0.887   115.75
1926.26    0.890   115.03
1927.26    0.892   114.31
1928.26    0.894   113.59
1929.26    0.896   112.87
1930.26    0.898   112.16
1931.26    0.900   111.46
1932.26    0.902   110.75
1933.26    0.904   110.05
1934.26    0.906   109.35
1935.26    0.907   108.66
1936.26    0.909   107.96
1937.26    0.910   107.27
1938.26    0.912   106.58
1939.26    0.913   105.90
1940.26    0.915   105.21
1941.26    0.916   104.53
1942.26    0.917   103.85
1943.26    0.918   103.17
1944.26    0.919   102.49
1945.26    0.920   101.81
1946.26    0.921   101.14
1947.26    0.921   100.46
1948.26    0.922    99.79
1949.26    0.923    99.12
1950.26    0.923    98.45
1951.26    0.923    97.77
1952.26    0.924    97.10
1953.26    0.924    96.43
1954.26    0.924    95.76
1955.26    0.924    95.09
1956.26    0.924    94.42
1957.26    0.923    93.75
1958.26    0.923    93.08
1959.26    0.923    92.41
1960.26    0.922    91.74
1961.26    0.921    91.06
1962.26    0.921    90.39
1963.26    0.920    89.71
1964.26    0.919    89.04
1965.26    0.918    88.36
1966.26    0.916    87.68
1967.26    0.915    86.99
1968.26    0.914    86.31
1969.26    0.912    85.62
1970.26    0.911    84.94
1971.26    0.909    84.24
1972.26    0.907    83.55
1973.26    0.905    82.85
1974.26    0.903    82.15
1975.26    0.901    81.45
1976.26    0.898    80.74
1977.26    0.896    80.03
1978.26    0.893    79.32
1979.26    0.891    78.60
1980.26    0.888    77.87
1981.26    0.885    77.15
1982.26    0.882    76.41
1983.26    0.878    75.67
1984.26    0.875    74.93
1985.26    0.872    74.18
1986.26    0.868    73.42
1987.26    0.864    72.66
1988.26    0.861    71.89
1989.26    0.857    71.12
1990.26    0.853    70.33
1991.26    0.848    69.54
1992.26    0.844    68.75
1993.26    0.840    67.94
1994.26    0.835    67.12
1995.26    0.830    66.30
1996.26    0.825    65.46
1997.26    0.820    64.62
1998.26    0.815    63.76
1999.26    0.810    62.90
2000.26    0.805    62.02
2001.26    0.799    61.13
2002.26    0.794    60.23
2003.26    0.788    59.31
2004.26    0.782    58.38
2005.26    0.776    57.44
2006.26    0.770    56.48
2007.26    0.764    55.51
2008.26    0.757    54.52
2009.26    0.751    53.52
2010.26    0.744    52.49
2011.26    0.738    51.45
2012.26    0.731    50.39
2013.26    0.724    49.31
2014.26    0.717    48.21
2015.26    0.710    47.09
2016.26    0.703    45.94
2017.26    0.696    44.77
2018.26    0.688    43.58
2019.26    0.681    42.35
2020.26    0.673    41.11
2021.26    0.666    39.83
2022.26    0.658    38.53
2023.26    0.651    37.19
2024.26    0.643    35.83
2025.26    0.635    34.43
2026.26    0.628    32.99
2027.26    0.620    31.52
2028.26    0.612    30.01
2029.26    0.604    28.47
2030.26    0.597    26.88
2031.26    0.589    25.26
2032.26    0.582    23.59
2033.26    0.574    21.87
2034.26    0.567    20.11
2035.26    0.559    18.31
2036.26    0.552    16.45
2037.26    0.545    14.55
2038.26    0.538    12.60
2039.26    0.531    10.60
2040.26    0.524     8.54
2041.26    0.518     6.43
2042.26    0.512     4.28
2043.26    0.506     2.07
2044.26    0.500   359.81
2045.26    0.495   357.50
2046.26    0.490   355.14
2047.26    0.485   352.73
2048.26    0.481   350.28
2049.26    0.477   347.78
2050.26    0.473   345.25
2051.26    0.470   342.67
2052.26    0.467   340.07
2053.26    0.465   337.43
2054.26    0.463   334.77
2055.26    0.461   332.09
2056.26    0.460   329.40
2057.26    0.460   326.69
2058.26    0.459   323.98
2059.26    0.460   321.27
2060.26    0.460   318.57
2061.26    0.461   315.87
2062.26    0.463   313.19
2063.26    0.464   310.52
2064.26    0.466   307.88
2065.26    0.469   305.26
2066.26    0.472   302.68
2067.26    0.475   300.12
2068.26    0.478   297.60
2069.26    0.481   295.11
2070.26    0.485   292.66
2071.26    0.489   290.25
2072.26    0.493   287.87
2073.26    0.497   285.54
2074.26    0.501   283.24
2075.26    0.506   280.99
2076.26    0.510   278.77
2077.26    0.514   276.59
2078.26    0.519   274.45
2079.26    0.523   272.34
2080.26    0.528   270.27
2081.26    0.532   268.23
2082.26    0.536   266.22
2083.26    0.541   264.25
2084.26    0.545   262.31
2085.26    0.549   260.40
2086.26    0.553   258.51
2087.26    0.557   256.65
2088.26    0.561   254.82
2089.26    0.564   253.01
2090.26    0.568   251.23
2091.26    0.571   249.47
2092.26    0.575   247.72
2093.26    0.578   246.00
2094.26    0.581   244.30
2095.26    0.584   242.62
2096.26    0.587   240.95
2097.26    0.590   239.30
2098.26    0.593   237.67
2099.26    0.596   236.05
2100.26    0.598   234.44
2101.26    0.601   232.85
2102.26    0.603   231.27
2103.26    0.606   229.71
2104.26    0.608   228.15
2105.26    0.610   226.61
2106.26    0.612   225.08
2107.26    0.614   223.56
2108.26    0.616   222.05
2109.26    0.619   220.55
2110.26    0.621   219.06
2111.26    0.622   217.58
2112.26    0.624   216.11
2113.26    0.626   214.64
2114.26    0.628   213.19
2115.26    0.630   211.75
2116.26    0.632   210.31
2117.26    0.634   208.88
2118.26    0.636   207.46
2119.26    0.638   206.05
2120.26    0.639   204.65
2121.26    0.641   203.25
2122.26    0.643   201.87
2123.26    0.645   200.49
2124.26    0.647   199.12
2125.26    0.649   197.76
2126.26    0.651   196.40
2127.26    0.653   195.06
2128.26    0.655   193.72
2129.26    0.657   192.39
2130.26    0.659   191.07
2131.26    0.662   189.76
2132.26    0.664   188.46
2133.26    0.666   187.17
2134.26    0.668   185.88
2135.26    0.671   184.61
2136.26    0.673   183.34
2137.26    0.676   182.08
2138.26    0.678   180.83
2139.26    0.681   179.59
2140.26    0.683   178.36
2141.26    0.686   177.14
2142.26    0.688   175.93
2143.26    0.691   174.73
2144.26    0.694   173.53
2145.26    0.697   172.35
2146.26    0.699   171.18
2147.26    0.702   170.01
2148.26    0.705   168.85
2149.26    0.708   167.71
2150.26    0.711   166.57
2151.26    0.714   165.45
2152.26    0.717   164.33
2153.26    0.720   163.22
2154.26    0.723   162.12
2155.26    0.726   161.03
2156.26    0.730   159.95
2157.26    0.733   158.88
2158.26    0.736   157.82
2159.26    0.739   156.77
2160.26    0.742   155.73
2161.26    0.746   154.70
2162.26    0.749   153.67
2163.26    0.752   152.66
2164.26    0.756   151.65
2165.26    0.759   150.66






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 17:46:33



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