Double Star Calculator - Orbit

Orbital Elements for A1
WDS: A1 WDS ID/Discoverer
P: 637.620 Orbital period (years)
a: 0.844 Semi-major axis (arcseconds)
i: 42.0 Inclination (degrees)
Ω: 232.1 Longitude of ascending node (degrees)
T: 1888.340 Epoch of periastron passage (year)
e: 0.454 Eccentricity
ω: 264.7 Longitude of periastron (degrees)
Start-Year: 1706.19 Year
End-Year: 2343.81 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1
Position: 014223.63-064517.3 Epoch-2000 right ascension and declination
WDS-ID: 01424-0645 WDS designation
Discoverer Code: A1 Discover designation and components
ADS number: 1345 Aitken Double Star catalog
HD number: 10508 HD catalog number
Hipparcos number: 7968 Hipparcos catalog number
V1: 8.90 Magnitude of the primary
V2: 8.75 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 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: Tok2015c Reference

Double Star Orbit for A1



WDS 6th Orbit including measures of A1

-- 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 A1
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.868   257.85
--------------------------
1706.19    0.866     0.57
1707.19    0.866     0.93
1708.19    0.865     1.28
1709.19    0.865     1.64
1710.19    0.864     2.00
1711.19    0.863     2.35
1712.19    0.863     2.71
1713.19    0.862     3.07
1714.19    0.861     3.43
1715.19    0.861     3.79
1716.19    0.860     4.15
1717.19    0.859     4.51
1718.19    0.858     4.87
1719.19    0.858     5.23
1720.19    0.857     5.59
1721.19    0.856     5.96
1722.19    0.855     6.32
1723.19    0.854     6.68
1724.19    0.854     7.05
1725.19    0.853     7.41
1726.19    0.852     7.78
1727.19    0.851     8.15
1728.19    0.850     8.52
1729.19    0.849     8.89
1730.19    0.849     9.25
1731.19    0.848     9.62
1732.19    0.847    10.00
1733.19    0.846    10.37
1734.19    0.845    10.74
1735.19    0.844    11.11
1736.19    0.843    11.49
1737.19    0.842    11.86
1738.19    0.841    12.24
1739.19    0.840    12.62
1740.19    0.839    13.00
1741.19    0.838    13.37
1742.19    0.837    13.75
1743.19    0.835    14.14
1744.19    0.834    14.52
1745.19    0.833    14.90
1746.19    0.832    15.28
1747.19    0.831    15.67
1748.19    0.830    16.06
1749.19    0.828    16.44
1750.19    0.827    16.83
1751.19    0.826    17.22
1752.19    0.825    17.61
1753.19    0.823    18.01
1754.19    0.822    18.40
1755.19    0.821    18.79
1756.19    0.819    19.19
1757.19    0.818    19.59
1758.19    0.816    19.99
1759.19    0.815    20.39
1760.19    0.813    20.79
1761.19    0.812    21.19
1762.19    0.810    21.60
1763.19    0.809    22.00
1764.19    0.807    22.41
1765.19    0.806    22.82
1766.19    0.804    23.23
1767.19    0.802    23.64
1768.19    0.801    24.06
1769.19    0.799    24.48
1770.19    0.797    24.89
1771.19    0.795    25.31
1772.19    0.793    25.74
1773.19    0.792    26.16
1774.19    0.790    26.59
1775.19    0.788    27.01
1776.19    0.786    27.44
1777.19    0.784    27.88
1778.19    0.782    28.31
1779.19    0.780    28.75
1780.19    0.778    29.19
1781.19    0.776    29.63
1782.19    0.774    30.07
1783.19    0.771    30.52
1784.19    0.769    30.97
1785.19    0.767    31.42
1786.19    0.765    31.87
1787.19    0.762    32.33
1788.19    0.760    32.79
1789.19    0.757    33.25
1790.19    0.755    33.72
1791.19    0.752    34.19
1792.19    0.750    34.66
1793.19    0.747    35.13
1794.19    0.745    35.61
1795.19    0.742    36.09
1796.19    0.739    36.58
1797.19    0.737    37.07
1798.19    0.734    37.56
1799.19    0.731    38.06
1800.19    0.728    38.56
1801.19    0.725    39.06
1802.19    0.722    39.57
1803.19    0.719    40.08
1804.19    0.716    40.60
1805.19    0.713    41.12
1806.19    0.710    41.65
1807.19    0.706    42.18
1808.19    0.703    42.72
1809.19    0.700    43.26
1810.19    0.696    43.80
1811.19    0.693    44.36
1812.19    0.689    44.91
1813.19    0.686    45.48
1814.19    0.682    46.05
1815.19    0.679    46.62
1816.19    0.675    47.20
1817.19    0.671    47.79
1818.19    0.667    48.38
1819.19    0.663    48.99
1820.19    0.659    49.59
1821.19    0.655    50.21
1822.19    0.651    50.83
1823.19    0.647    51.47
1824.19    0.643    52.11
1825.19    0.639    52.75
1826.19    0.634    53.41
1827.19    0.630    54.08
1828.19    0.626    54.75
1829.19    0.621    55.44
1830.19    0.617    56.13
1831.19    0.612    56.84
1832.19    0.607    57.56
1833.19    0.603    58.28
1834.19    0.598    59.02
1835.19    0.593    59.77
1836.19    0.588    60.54
1837.19    0.583    61.31
1838.19    0.578    62.10
1839.19    0.573    62.91
1840.19    0.568    63.73
1841.19    0.563    64.56
1842.19    0.557    65.41
1843.19    0.552    66.27
1844.19    0.547    67.16
1845.19    0.541    68.06
1846.19    0.536    68.97
1847.19    0.530    69.91
1848.19    0.525    70.87
1849.19    0.519    71.85
1850.19    0.514    72.84
1851.19    0.508    73.86
1852.19    0.502    74.91
1853.19    0.497    75.97
1854.19    0.491    77.07
1855.19    0.485    78.18
1856.19    0.480    79.33
1857.19    0.474    80.50
1858.19    0.468    81.70
1859.19    0.462    82.93
1860.19    0.457    84.19
1861.19    0.451    85.48
1862.19    0.445    86.81
1863.19    0.440    88.17
1864.19    0.434    89.57
1865.19    0.429    91.00
1866.19    0.423    92.47
1867.19    0.418    93.97
1868.19    0.412    95.52
1869.19    0.407    97.10
1870.19    0.402    98.73
1871.19    0.397   100.40
1872.19    0.392   102.11
1873.19    0.388   103.86
1874.19    0.383   105.65
1875.19    0.379   107.49
1876.19    0.375   109.36
1877.19    0.371   111.28
1878.19    0.367   113.24
1879.19    0.363   115.24
1880.19    0.360   117.28
1881.19    0.357   119.35
1882.19    0.354   121.45
1883.19    0.352   123.59
1884.19    0.350   125.76
1885.19    0.348   127.95
1886.19    0.346   130.17
1887.19    0.345   132.40
1888.19    0.344   134.65
1889.19    0.343   136.90
1890.19    0.343   139.17
1891.19    0.343   141.43
1892.19    0.343   143.70
1893.19    0.344   145.96
1894.19    0.345   148.20
1895.19    0.346   150.43
1896.19    0.348   152.64
1897.19    0.350   154.83
1898.19    0.352   156.99
1899.19    0.355   159.12
1900.19    0.358   161.22
1901.19    0.361   163.29
1902.19    0.364   165.32
1903.19    0.368   167.31
1904.19    0.372   169.26
1905.19    0.376   171.16
1906.19    0.380   173.03
1907.19    0.384   174.86
1908.19    0.389   176.64
1909.19    0.394   178.37
1910.19    0.399   180.07
1911.19    0.404   181.72
1912.19    0.409   183.33
1913.19    0.415   184.90
1914.19    0.420   186.43
1915.19    0.426   187.92
1916.19    0.431   189.38
1917.19    0.437   190.79
1918.19    0.443   192.16
1919.19    0.449   193.51
1920.19    0.454   194.81
1921.19    0.460   196.08
1922.19    0.466   197.32
1923.19    0.472   198.53
1924.19    0.478   199.71
1925.19    0.484   200.86
1926.19    0.490   201.98
1927.19    0.496   203.08
1928.19    0.502   204.14
1929.19    0.508   205.19
1930.19    0.514   206.20
1931.19    0.520   207.20
1932.19    0.526   208.17
1933.19    0.532   209.12
1934.19    0.538   210.05
1935.19    0.544   210.96
1936.19    0.550   211.85
1937.19    0.556   212.72
1938.19    0.561   213.58
1939.19    0.567   214.41
1940.19    0.573   215.23
1941.19    0.578   216.04
1942.19    0.584   216.83
1943.19    0.589   217.60
1944.19    0.595   218.36
1945.19    0.600   219.11
1946.19    0.606   219.84
1947.19    0.611   220.56
1948.19    0.616   221.26
1949.19    0.621   221.96
1950.19    0.627   222.64
1951.19    0.632   223.32
1952.19    0.637   223.98
1953.19    0.642   224.63
1954.19    0.647   225.27
1955.19    0.651   225.91
1956.19    0.656   226.53
1957.19    0.661   227.14
1958.19    0.666   227.75
1959.19    0.670   228.35
1960.19    0.675   228.93
1961.19    0.679   229.51
1962.19    0.684   230.09
1963.19    0.688   230.65
1964.19    0.692   231.21
1965.19    0.697   231.76
1966.19    0.701   232.31
1967.19    0.705   232.85
1968.19    0.709   233.38
1969.19    0.713   233.91
1970.19    0.717   234.43
1971.19    0.721   234.94
1972.19    0.725   235.45
1973.19    0.729   235.96
1974.19    0.733   236.45
1975.19    0.737   236.95
1976.19    0.740   237.44
1977.19    0.744   237.92
1978.19    0.747   238.40
1979.19    0.751   238.87
1980.19    0.754   239.34
1981.19    0.758   239.81
1982.19    0.761   240.27
1983.19    0.765   240.73
1984.19    0.768   241.18
1985.19    0.771   241.63
1986.19    0.774   242.08
1987.19    0.777   242.52
1988.19    0.780   242.96
1989.19    0.784   243.39
1990.19    0.787   243.83
1991.19    0.789   244.26
1992.19    0.792   244.68
1993.19    0.795   245.10
1994.19    0.798   245.52
1995.19    0.801   245.94
1996.19    0.804   246.35
1997.19    0.806   246.76
1998.19    0.809   247.17
1999.19    0.811   247.58
2000.19    0.814   247.98
2001.19    0.817   248.38
2002.19    0.819   248.78
2003.19    0.821   249.18
2004.19    0.824   249.57
2005.19    0.826   249.96
2006.19    0.829   250.35
2007.19    0.831   250.74
2008.19    0.833   251.12
2009.19    0.835   251.50
2010.19    0.837   251.89
2011.19    0.840   252.26
2012.19    0.842   252.64
2013.19    0.844   253.02
2014.19    0.846   253.39
2015.19    0.848   253.76
2016.19    0.850   254.13
2017.19    0.852   254.50
2018.19    0.854   254.86
2019.19    0.856   255.23
2020.19    0.857   255.59
2021.19    0.859   255.95
2022.19    0.861   256.31
2023.19    0.863   256.67
2024.19    0.864   257.03
2025.19    0.866   257.38
2026.19    0.868   257.74
2027.19    0.869   258.09
2028.19    0.871   258.44
2029.19    0.872   258.79
2030.19    0.874   259.14
2031.19    0.876   259.49
2032.19    0.877   259.84
2033.19    0.878   260.18
2034.19    0.880   260.53
2035.19    0.881   260.87
2036.19    0.883   261.21
2037.19    0.884   261.56
2038.19    0.885   261.90
2039.19    0.887   262.24
2040.19    0.888   262.57
2041.19    0.889   262.91
2042.19    0.890   263.25
2043.19    0.891   263.58
2044.19    0.893   263.92
2045.19    0.894   264.25
2046.19    0.895   264.58
2047.19    0.896   264.92
2048.19    0.897   265.25
2049.19    0.898   265.58
2050.19    0.899   265.91
2051.19    0.900   266.24
2052.19    0.901   266.56
2053.19    0.902   266.89
2054.19    0.903   267.22
2055.19    0.904   267.55
2056.19    0.905   267.87
2057.19    0.906   268.20
2058.19    0.907   268.52
2059.19    0.908   268.84
2060.19    0.908   269.17
2061.19    0.909   269.49
2062.19    0.910   269.81
2063.19    0.911   270.13
2064.19    0.911   270.45
2065.19    0.912   270.77
2066.19    0.913   271.09
2067.19    0.914   271.41
2068.19    0.914   271.73
2069.19    0.915   272.05
2070.19    0.916   272.37
2071.19    0.916   272.69
2072.19    0.917   273.00
2073.19    0.917   273.32
2074.19    0.918   273.64
2075.19    0.919   273.95
2076.19    0.919   274.27
2077.19    0.920   274.58
2078.19    0.920   274.90
2079.19    0.921   275.21
2080.19    0.921   275.53
2081.19    0.922   275.84
2082.19    0.922   276.15
2083.19    0.922   276.47
2084.19    0.923   276.78
2085.19    0.923   277.09
2086.19    0.924   277.40
2087.19    0.924   277.71
2088.19    0.924   278.03
2089.19    0.925   278.34
2090.19    0.925   278.65
2091.19    0.925   278.96
2092.19    0.926   279.27
2093.19    0.926   279.58
2094.19    0.926   279.89
2095.19    0.927   280.20
2096.19    0.927   280.51
2097.19    0.927   280.82
2098.19    0.927   281.13
2099.19    0.928   281.44
2100.19    0.928   281.75
2101.19    0.928   282.06
2102.19    0.928   282.37
2103.19    0.929   282.68
2104.19    0.929   282.99
2105.19    0.929   283.30
2106.19    0.929   283.60
2107.19    0.929   283.91
2108.19    0.929   284.22
2109.19    0.930   284.53
2110.19    0.930   284.84
2111.19    0.930   285.15
2112.19    0.930   285.45
2113.19    0.930   285.76
2114.19    0.930   286.07
2115.19    0.930   286.38
2116.19    0.930   286.68
2117.19    0.930   286.99
2118.19    0.930   287.30
2119.19    0.930   287.61
2120.19    0.930   287.92
2121.19    0.930   288.22
2122.19    0.930   288.53
2123.19    0.930   288.84
2124.19    0.931   289.15
2125.19    0.930   289.45
2126.19    0.930   289.76
2127.19    0.930   290.07
2128.19    0.930   290.38
2129.19    0.930   290.68
2130.19    0.930   290.99
2131.19    0.930   291.30
2132.19    0.930   291.61
2133.19    0.930   291.91
2134.19    0.930   292.22
2135.19    0.930   292.53
2136.19    0.930   292.84
2137.19    0.930   293.15
2138.19    0.930   293.45
2139.19    0.930   293.76
2140.19    0.930   294.07
2141.19    0.930   294.38
2142.19    0.929   294.69
2143.19    0.929   294.99
2144.19    0.929   295.30
2145.19    0.929   295.61
2146.19    0.929   295.92
2147.19    0.929   296.23
2148.19    0.929   296.54
2149.19    0.929   296.85
2150.19    0.928   297.15
2151.19    0.928   297.46
2152.19    0.928   297.77
2153.19    0.928   298.08
2154.19    0.928   298.39
2155.19    0.928   298.70
2156.19    0.927   299.01
2157.19    0.927   299.32
2158.19    0.927   299.63
2159.19    0.927   299.94
2160.19    0.927   300.25
2161.19    0.927   300.56
2162.19    0.926   300.87
2163.19    0.926   301.18
2164.19    0.926   301.49
2165.19    0.926   301.80
2166.19    0.926   302.11
2167.19    0.925   302.42
2168.19    0.925   302.73
2169.19    0.925   303.05
2170.19    0.925   303.36
2171.19    0.924   303.67
2172.19    0.924   303.98
2173.19    0.924   304.29
2174.19    0.924   304.60
2175.19    0.924   304.92
2176.19    0.923   305.23
2177.19    0.923   305.54
2178.19    0.923   305.85
2179.19    0.923   306.17
2180.19    0.922   306.48
2181.19    0.922   306.79
2182.19    0.922   307.11
2183.19    0.922   307.42
2184.19    0.921   307.73
2185.19    0.921   308.05
2186.19    0.921   308.36
2187.19    0.921   308.68
2188.19    0.920   308.99
2189.19    0.920   309.30
2190.19    0.920   309.62
2191.19    0.919   309.93
2192.19    0.919   310.25
2193.19    0.919   310.56
2194.19    0.919   310.88
2195.19    0.918   311.20
2196.19    0.918   311.51
2197.19    0.918   311.83
2198.19    0.918   312.14
2199.19    0.917   312.46
2200.19    0.917   312.78
2201.19    0.917   313.09
2202.19    0.917   313.41
2203.19    0.916   313.73
2204.19    0.916   314.04
2205.19    0.916   314.36
2206.19    0.915   314.68
2207.19    0.915   315.00
2208.19    0.915   315.32
2209.19    0.915   315.63
2210.19    0.914   315.95
2211.19    0.914   316.27
2212.19    0.914   316.59
2213.19    0.913   316.91
2214.19    0.913   317.23
2215.19    0.913   317.55
2216.19    0.913   317.87
2217.19    0.912   318.19
2218.19    0.912   318.51
2219.19    0.912   318.83
2220.19    0.911   319.15
2221.19    0.911   319.47
2222.19    0.911   319.79
2223.19    0.911   320.11
2224.19    0.910   320.43
2225.19    0.910   320.75
2226.19    0.910   321.08
2227.19    0.909   321.40
2228.19    0.909   321.72
2229.19    0.909   322.04
2230.19    0.909   322.36
2231.19    0.908   322.69
2232.19    0.908   323.01
2233.19    0.908   323.33
2234.19    0.907   323.66
2235.19    0.907   323.98
2236.19    0.907   324.30
2237.19    0.906   324.63
2238.19    0.906   324.95
2239.19    0.906   325.28
2240.19    0.906   325.60
2241.19    0.905   325.93
2242.19    0.905   326.25
2243.19    0.905   326.58
2244.19    0.904   326.90
2245.19    0.904   327.23
2246.19    0.904   327.55
2247.19    0.904   327.88
2248.19    0.903   328.21
2249.19    0.903   328.53
2250.19    0.903   328.86
2251.19    0.902   329.19
2252.19    0.902   329.51
2253.19    0.902   329.84
2254.19    0.901   330.17
2255.19    0.901   330.50
2256.19    0.901   330.82
2257.19    0.901   331.15
2258.19    0.900   331.48
2259.19    0.900   331.81
2260.19    0.900   332.14
2261.19    0.899   332.47
2262.19    0.899   332.80
2263.19    0.899   333.13
2264.19    0.898   333.46
2265.19    0.898   333.79
2266.19    0.898   334.12
2267.19    0.898   334.45
2268.19    0.897   334.78
2269.19    0.897   335.11
2270.19    0.897   335.44
2271.19    0.896   335.77
2272.19    0.896   336.10
2273.19    0.896   336.43
2274.19    0.895   336.77
2275.19    0.895   337.10
2276.19    0.895   337.43
2277.19    0.894   337.76
2278.19    0.894   338.10
2279.19    0.894   338.43
2280.19    0.894   338.76
2281.19    0.893   339.10
2282.19    0.893   339.43
2283.19    0.893   339.77
2284.19    0.892   340.10
2285.19    0.892   340.43
2286.19    0.892   340.77
2287.19    0.891   341.10
2288.19    0.891   341.44
2289.19    0.891   341.78
2290.19    0.890   342.11
2291.19    0.890   342.45
2292.19    0.890   342.78
2293.19    0.889   343.12
2294.19    0.889   343.46
2295.19    0.889   343.79
2296.19    0.888   344.13
2297.19    0.888   344.47
2298.19    0.887   344.81
2299.19    0.887   345.15
2300.19    0.887   345.48
2301.19    0.886   345.82
2302.19    0.886   346.16
2303.19    0.886   346.50
2304.19    0.885   346.84
2305.19    0.885   347.18
2306.19    0.885   347.52
2307.19    0.884   347.86
2308.19    0.884   348.20
2309.19    0.883   348.54
2310.19    0.883   348.89
2311.19    0.883   349.23
2312.19    0.882   349.57
2313.19    0.882   349.91
2314.19    0.881   350.25
2315.19    0.881   350.60
2316.19    0.880   350.94
2317.19    0.880   351.28
2318.19    0.880   351.63
2319.19    0.879   351.97
2320.19    0.879   352.32
2321.19    0.878   352.66
2322.19    0.878   353.01
2323.19    0.877   353.35
2324.19    0.877   353.70
2325.19    0.876   354.05
2326.19    0.876   354.39
2327.19    0.875   354.74
2328.19    0.875   355.09
2329.19    0.875   355.44
2330.19    0.874   355.78
2331.19    0.874   356.13
2332.19    0.873   356.48
2333.19    0.872   356.83
2334.19    0.872   357.18
2335.19    0.871   357.53
2336.19    0.871   357.88
2337.19    0.870   358.23
2338.19    0.870   358.59
2339.19    0.869   358.94
2340.19    0.869   359.29
2341.19    0.868   359.65
2342.19    0.867   360.00
2343.19    0.867     0.35






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 14:53:00



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