Double Star Calculator - Orbit

Orbital Elements for A1936BC
WDS: A1936BC WDS ID/Discoverer
P: 225.000 Orbital period (years)
a: 0.425 Semi-major axis (arcseconds)
i: 152.4 Inclination (degrees)
Ω: 68.9 Longitude of ascending node (degrees)
T: 1978.870 Epoch of periastron passage (year)
e: 0.179 Eccentricity
ω: 51.3 Longitude of periastron (degrees)
Start-Year: 1912.5 Year
End-Year: 2137.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1936BC
Position: 040009.54+081818.9 Epoch-2000 right ascension and declination
WDS-ID: 04002+0818 WDS designation
Discoverer Code: A1936BC Discover designation and components
ADS number: 2923 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.6 Magnitude of the primary
V2: 9.7 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2016 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2017c Reference

Double Star Orbit for A1936BC



WDS 6th Orbit including measures of A1936BC

-- 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 A1936BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.407   277.79
--------------------------
1912.50    0.410   140.00
1913.50    0.409   138.50
1914.50    0.409   136.99
1915.50    0.408   135.48
1916.50    0.407   133.96
1917.50    0.406   132.44
1918.50    0.405   130.91
1919.50    0.405   129.37
1920.50    0.404   127.83
1921.50    0.403   126.28
1922.50    0.403   124.73
1923.50    0.402   123.17
1924.50    0.401   121.61
1925.50    0.401   120.04
1926.50    0.400   118.47
1927.50    0.399   116.89
1928.50    0.399   115.31
1929.50    0.398   113.72
1930.50    0.397   112.12
1931.50    0.397   110.52
1932.50    0.396   108.92
1933.50    0.395   107.30
1934.50    0.394   105.69
1935.50    0.394   104.06
1936.50    0.393   102.44
1937.50    0.392   100.80
1938.50    0.391    99.16
1939.50    0.390    97.51
1940.50    0.390    95.85
1941.50    0.389    94.19
1942.50    0.388    92.52
1943.50    0.387    90.83
1944.50    0.386    89.14
1945.50    0.385    87.45
1946.50    0.383    85.74
1947.50    0.382    84.02
1948.50    0.381    82.29
1949.50    0.380    80.55
1950.50    0.378    78.79
1951.50    0.377    77.03
1952.50    0.376    75.25
1953.50    0.374    73.45
1954.50    0.372    71.64
1955.50    0.371    69.82
1956.50    0.369    67.98
1957.50    0.367    66.12
1958.50    0.366    64.24
1959.50    0.364    62.35
1960.50    0.362    60.44
1961.50    0.360    58.50
1962.50    0.358    56.55
1963.50    0.356    54.57
1964.50    0.354    52.57
1965.50    0.352    50.54
1966.50    0.350    48.50
1967.50    0.348    46.42
1968.50    0.345    44.32
1969.50    0.343    42.20
1970.50    0.341    40.05
1971.50    0.339    37.87
1972.50    0.337    35.67
1973.50    0.335    33.44
1974.50    0.333    31.18
1975.50    0.331    28.90
1976.50    0.329    26.59
1977.50    0.328    24.25
1978.50    0.326    21.89
1979.50    0.324    19.51
1980.50    0.323    17.10
1981.50    0.322    14.68
1982.50    0.320    12.23
1983.50    0.319     9.76
1984.50    0.318     7.28
1985.50    0.317     4.79
1986.50    0.317     2.28
1987.50    0.316   359.77
1988.50    0.316   357.25
1989.50    0.316   354.73
1990.50    0.316   352.21
1991.50    0.316   349.69
1992.50    0.317   347.18
1993.50    0.318   344.67
1994.50    0.318   342.18
1995.50    0.320   339.71
1996.50    0.321   337.25
1997.50    0.322   334.81
1998.50    0.324   332.39
1999.50    0.325   330.00
2000.50    0.327   327.63
2001.50    0.329   325.30
2002.50    0.332   322.99
2003.50    0.334   320.72
2004.50    0.337   318.48
2005.50    0.339   316.27
2006.50    0.342   314.10
2007.50    0.345   311.96
2008.50    0.348   309.86
2009.50    0.351   307.79
2010.50    0.354   305.76
2011.50    0.357   303.77
2012.50    0.360   301.81
2013.50    0.364   299.89
2014.50    0.367   298.00
2015.50    0.370   296.14
2016.50    0.374   294.32
2017.50    0.377   292.54
2018.50    0.381   290.78
2019.50    0.384   289.06
2020.50    0.387   287.36
2021.50    0.391   285.70
2022.50    0.394   284.06
2023.50    0.398   282.45
2024.50    0.401   280.87
2025.50    0.404   279.32
2026.50    0.407   277.79
2027.50    0.411   276.28
2028.50    0.414   274.80
2029.50    0.417   273.34
2030.50    0.420   271.90
2031.50    0.423   270.48
2032.50    0.426   269.09
2033.50    0.429   267.71
2034.50    0.432   266.35
2035.50    0.435   265.01
2036.50    0.437   263.68
2037.50    0.440   262.37
2038.50    0.442   261.07
2039.50    0.445   259.79
2040.50    0.447   258.53
2041.50    0.450   257.27
2042.50    0.452   256.03
2043.50    0.454   254.80
2044.50    0.456   253.59
2045.50    0.458   252.38
2046.50    0.460   251.18
2047.50    0.462   250.00
2048.50    0.463   248.82
2049.50    0.465   247.65
2050.50    0.467   246.49
2051.50    0.468   245.33
2052.50    0.469   244.19
2053.50    0.471   243.05
2054.50    0.472   241.91
2055.50    0.473   240.78
2056.50    0.474   239.66
2057.50    0.475   238.54
2058.50    0.476   237.43
2059.50    0.477   236.32
2060.50    0.477   235.21
2061.50    0.478   234.10
2062.50    0.479   233.00
2063.50    0.479   231.91
2064.50    0.480   230.81
2065.50    0.480   229.71
2066.50    0.480   228.62
2067.50    0.480   227.53
2068.50    0.481   226.44
2069.50    0.481   225.35
2070.50    0.481   224.26
2071.50    0.480   223.16
2072.50    0.480   222.07
2073.50    0.480   220.98
2074.50    0.480   219.89
2075.50    0.480   218.79
2076.50    0.479   217.69
2077.50    0.479   216.60
2078.50    0.478   215.49
2079.50    0.478   214.39
2080.50    0.477   213.29
2081.50    0.476   212.18
2082.50    0.476   211.06
2083.50    0.475   209.95
2084.50    0.474   208.83
2085.50    0.473   207.70
2086.50    0.472   206.58
2087.50    0.471   205.44
2088.50    0.470   204.31
2089.50    0.469   203.16
2090.50    0.468   202.02
2091.50    0.467   200.86
2092.50    0.466   199.71
2093.50    0.465   198.54
2094.50    0.464   197.37
2095.50    0.462   196.20
2096.50    0.461   195.02
2097.50    0.460   193.83
2098.50    0.459   192.63
2099.50    0.457   191.43
2100.50    0.456   190.22
2101.50    0.455   189.00
2102.50    0.453   187.78
2103.50    0.452   186.55
2104.50    0.450   185.31
2105.50    0.449   184.07
2106.50    0.448   182.81
2107.50    0.446   181.55
2108.50    0.445   180.28
2109.50    0.444   179.01
2110.50    0.442   177.72
2111.50    0.441   176.43
2112.50    0.439   175.13
2113.50    0.438   173.82
2114.50    0.437   172.50
2115.50    0.435   171.18
2116.50    0.434   169.84
2117.50    0.433   168.50
2118.50    0.431   167.15
2119.50    0.430   165.79
2120.50    0.429   164.42
2121.50    0.427   163.05
2122.50    0.426   161.67
2123.50    0.425   160.27
2124.50    0.424   158.87
2125.50    0.423   157.47
2126.50    0.421   156.05
2127.50    0.420   154.63
2128.50    0.419   153.20
2129.50    0.418   151.76
2130.50    0.417   150.32
2131.50    0.416   148.86
2132.50    0.415   147.40
2133.50    0.414   145.94
2134.50    0.413   144.46
2135.50    0.412   142.98
2136.50    0.411   141.49






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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 15:16:55



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