Double Star Calculator - Orbit

Orbital Elements for A1256AB
WDS: A1256AB WDS ID/Discoverer
P: 330.000 Orbital period (years)
a: 0.29 Semi-major axis (arcseconds)
i: 73.8 Inclination (degrees)
Ω: 64.3 Longitude of ascending node (degrees)
T: 1995.500 Epoch of periastron passage (year)
e: 0.715 Eccentricity
ω: 78.1 Longitude of periastron (degrees)
Start-Year: 1860.0 Year
End-Year: 2190.0 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for A1256AB
Position: 001517.83+441212.2 Epoch-2000 right ascension and declination
WDS-ID: 00153+4412 WDS designation
Discoverer Code: A1256AB Discover designation and components
ADS number: 197 Aitken Double Star catalog
HD number: 1082 HD catalog number
Hipparcos number: 1233 Hipparcos catalog number
V1: 7.3 Magnitude of the primary
V2: 7.5 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1991 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: USN2002 Reference

Double Star Orbit for A1256AB



WDS 6th Orbit including measures of A1256AB

-- 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 A1256AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.216   250.22
--------------------------
1860.00    0.140   319.78
1861.00    0.139   320.70
1862.00    0.138   321.63
1863.00    0.138   322.57
1864.00    0.137   323.52
1865.00    0.136   324.48
1866.00    0.136   325.44
1867.00    0.135   326.42
1868.00    0.135   327.40
1869.00    0.134   328.40
1870.00    0.134   329.40
1871.00    0.133   330.40
1872.00    0.133   331.41
1873.00    0.132   332.43
1874.00    0.132   333.46
1875.00    0.132   334.49
1876.00    0.131   335.53
1877.00    0.131   336.57
1878.00    0.131   337.61
1879.00    0.131   338.66
1880.00    0.130   339.71
1881.00    0.130   340.76
1882.00    0.130   341.82
1883.00    0.130   342.88
1884.00    0.130   343.93
1885.00    0.130   344.99
1886.00    0.130   346.05
1887.00    0.130   347.11
1888.00    0.130   348.16
1889.00    0.130   349.22
1890.00    0.130   350.27
1891.00    0.131   351.32
1892.00    0.131   352.37
1893.00    0.131   353.41
1894.00    0.131   354.45
1895.00    0.132   355.49
1896.00    0.132   356.52
1897.00    0.132   357.54
1898.00    0.133   358.56
1899.00    0.133   359.57
1900.00    0.134     0.58
1901.00    0.134     1.58
1902.00    0.135     2.57
1903.00    0.135     3.55
1904.00    0.136     4.53
1905.00    0.136     5.50
1906.00    0.137     6.46
1907.00    0.137     7.41
1908.00    0.138     8.36
1909.00    0.139     9.29
1910.00    0.139    10.22
1911.00    0.140    11.13
1912.00    0.141    12.04
1913.00    0.141    12.94
1914.00    0.142    13.83
1915.00    0.143    14.71
1916.00    0.144    15.58
1917.00    0.145    16.44
1918.00    0.145    17.29
1919.00    0.146    18.13
1920.00    0.147    18.97
1921.00    0.148    19.79
1922.00    0.149    20.61
1923.00    0.149    21.41
1924.00    0.150    22.21
1925.00    0.151    23.00
1926.00    0.152    23.78
1927.00    0.153    24.55
1928.00    0.154    25.31
1929.00    0.155    26.06
1930.00    0.155    26.81
1931.00    0.156    27.54
1932.00    0.157    28.27
1933.00    0.158    28.99
1934.00    0.159    29.71
1935.00    0.160    30.41
1936.00    0.160    31.11
1937.00    0.161    31.80
1938.00    0.162    32.49
1939.00    0.163    33.17
1940.00    0.163    33.84
1941.00    0.164    34.51
1942.00    0.165    35.17
1943.00    0.166    35.82
1944.00    0.166    36.47
1945.00    0.167    37.12
1946.00    0.168    37.76
1947.00    0.168    38.39
1948.00    0.169    39.02
1949.00    0.169    39.65
1950.00    0.170    40.27
1951.00    0.170    40.89
1952.00    0.171    41.51
1953.00    0.171    42.12
1954.00    0.171    42.73
1955.00    0.171    43.34
1956.00    0.172    43.95
1957.00    0.172    44.56
1958.00    0.172    45.17
1959.00    0.172    45.77
1960.00    0.172    46.38
1961.00    0.172    46.98
1962.00    0.171    47.59
1963.00    0.171    48.20
1964.00    0.171    48.82
1965.00    0.170    49.43
1966.00    0.169    50.05
1967.00    0.169    50.68
1968.00    0.168    51.31
1969.00    0.167    51.95
1970.00    0.166    52.60
1971.00    0.164    53.25
1972.00    0.163    53.92
1973.00    0.161    54.60
1974.00    0.159    55.30
1975.00    0.157    56.01
1976.00    0.155    56.74
1977.00    0.153    57.50
1978.00    0.150    58.28
1979.00    0.147    59.10
1980.00    0.143    59.95
1981.00    0.139    60.85
1982.00    0.135    61.80
1983.00    0.130    62.81
1984.00    0.125    63.91
1985.00    0.120    65.10
1986.00    0.114    66.41
1987.00    0.107    67.88
1988.00    0.099    69.57
1989.00    0.091    71.54
1990.00    0.083    73.91
1991.00    0.073    76.87
1992.00    0.063    80.75
1993.00    0.053    86.13
1994.00    0.042    94.21
1995.00    0.032   107.42
1996.00    0.025   129.91
1997.00    0.024   161.68
1998.00    0.029   189.29
1999.00    0.038   206.20
2000.00    0.048   216.18
2001.00    0.059   222.54
2002.00    0.069   226.93
2003.00    0.080   230.16
2004.00    0.090   232.65
2005.00    0.099   234.66
2006.00    0.108   236.33
2007.00    0.117   237.74
2008.00    0.125   238.97
2009.00    0.132   240.05
2010.00    0.140   241.02
2011.00    0.146   241.90
2012.00    0.153   242.70
2013.00    0.159   243.43
2014.00    0.165   244.12
2015.00    0.170   244.75
2016.00    0.175   245.35
2017.00    0.180   245.92
2018.00    0.185   246.46
2019.00    0.189   246.97
2020.00    0.194   247.46
2021.00    0.197   247.93
2022.00    0.201   248.38
2023.00    0.205   248.81
2024.00    0.208   249.23
2025.00    0.212   249.63
2026.00    0.215   250.03
2027.00    0.218   250.41
2028.00    0.220   250.78
2029.00    0.223   251.15
2030.00    0.226   251.50
2031.00    0.228   251.85
2032.00    0.230   252.19
2033.00    0.232   252.53
2034.00    0.234   252.86
2035.00    0.236   253.18
2036.00    0.238   253.50
2037.00    0.240   253.81
2038.00    0.242   254.12
2039.00    0.243   254.42
2040.00    0.245   254.72
2041.00    0.246   255.02
2042.00    0.247   255.31
2043.00    0.249   255.61
2044.00    0.250   255.89
2045.00    0.251   256.18
2046.00    0.252   256.46
2047.00    0.253   256.74
2048.00    0.254   257.02
2049.00    0.255   257.30
2050.00    0.255   257.58
2051.00    0.256   257.85
2052.00    0.257   258.12
2053.00    0.257   258.39
2054.00    0.258   258.66
2055.00    0.258   258.93
2056.00    0.259   259.20
2057.00    0.259   259.47
2058.00    0.259   259.73
2059.00    0.260   260.00
2060.00    0.260   260.26
2061.00    0.260   260.53
2062.00    0.260   260.79
2063.00    0.260   261.06
2064.00    0.260   261.32
2065.00    0.260   261.59
2066.00    0.260   261.85
2067.00    0.260   262.11
2068.00    0.260   262.38
2069.00    0.260   262.64
2070.00    0.260   262.91
2071.00    0.260   263.17
2072.00    0.259   263.44
2073.00    0.259   263.71
2074.00    0.259   263.97
2075.00    0.259   264.24
2076.00    0.258   264.51
2077.00    0.258   264.78
2078.00    0.257   265.05
2079.00    0.257   265.32
2080.00    0.256   265.59
2081.00    0.256   265.86
2082.00    0.255   266.13
2083.00    0.255   266.41
2084.00    0.254   266.69
2085.00    0.254   266.96
2086.00    0.253   267.24
2087.00    0.252   267.52
2088.00    0.252   267.80
2089.00    0.251   268.09
2090.00    0.250   268.37
2091.00    0.250   268.66
2092.00    0.249   268.95
2093.00    0.248   269.24
2094.00    0.247   269.53
2095.00    0.246   269.82
2096.00    0.246   270.12
2097.00    0.245   270.41
2098.00    0.244   270.71
2099.00    0.243   271.02
2100.00    0.242   271.32
2101.00    0.241   271.63
2102.00    0.240   271.94
2103.00    0.239   272.25
2104.00    0.238   272.56
2105.00    0.237   272.88
2106.00    0.236   273.20
2107.00    0.235   273.52
2108.00    0.234   273.84
2109.00    0.233   274.17
2110.00    0.232   274.50
2111.00    0.231   274.83
2112.00    0.230   275.17
2113.00    0.229   275.51
2114.00    0.228   275.85
2115.00    0.227   276.20
2116.00    0.226   276.55
2117.00    0.224   276.90
2118.00    0.223   277.26
2119.00    0.222   277.62
2120.00    0.221   277.99
2121.00    0.220   278.36
2122.00    0.219   278.73
2123.00    0.217   279.10
2124.00    0.216   279.49
2125.00    0.215   279.87
2126.00    0.214   280.26
2127.00    0.213   280.65
2128.00    0.211   281.05
2129.00    0.210   281.46
2130.00    0.209   281.86
2131.00    0.208   282.28
2132.00    0.206   282.69
2133.00    0.205   283.12
2134.00    0.204   283.55
2135.00    0.203   283.98
2136.00    0.201   284.42
2137.00    0.200   284.86
2138.00    0.199   285.31
2139.00    0.197   285.77
2140.00    0.196   286.23
2141.00    0.195   286.70
2142.00    0.194   287.17
2143.00    0.192   287.65
2144.00    0.191   288.14
2145.00    0.190   288.64
2146.00    0.188   289.14
2147.00    0.187   289.64
2148.00    0.186   290.16
2149.00    0.185   290.68
2150.00    0.183   291.21
2151.00    0.182   291.74
2152.00    0.181   292.29
2153.00    0.180   292.84
2154.00    0.178   293.40
2155.00    0.177   293.97
2156.00    0.176   294.54
2157.00    0.174   295.12
2158.00    0.173   295.72
2159.00    0.172   296.32
2160.00    0.171   296.93
2161.00    0.170   297.54
2162.00    0.168   298.17
2163.00    0.167   298.81
2164.00    0.166   299.45
2165.00    0.165   300.11
2166.00    0.164   300.77
2167.00    0.162   301.45
2168.00    0.161   302.13
2169.00    0.160   302.82
2170.00    0.159   303.53
2171.00    0.158   304.24
2172.00    0.157   304.96
2173.00    0.156   305.70
2174.00    0.155   306.44
2175.00    0.153   307.20
2176.00    0.152   307.96
2177.00    0.151   308.74
2178.00    0.150   309.52
2179.00    0.149   310.32
2180.00    0.148   311.13
2181.00    0.147   311.94
2182.00    0.146   312.77
2183.00    0.146   313.61
2184.00    0.145   314.46
2185.00    0.144   315.32
2186.00    0.143   316.19
2187.00    0.142   317.07
2188.00    0.141   317.96
2189.00    0.141   318.87



 

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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 14:37:23


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