Double Star Calculator - Orbit

Orbital Elements for A102AB
WDS: A102AB WDS ID/Discoverer
P: 429.000 Orbital period (years)
a: 0.352 Semi-major axis (arcseconds)
i: 40.0 Inclination (degrees)
Ω: 67.5 Longitude of ascending node (degrees)
T: 1992.260 Epoch of periastron passage (year)
e: 0.653 Eccentricity
ω: 106.9 Longitude of periastron (degrees)
Start-Year: 1810.5 Year
End-Year: 2239.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A102AB
Position: 192209.28-073512.6 Epoch-2000 right ascension and declination
WDS-ID: 19222-0735 WDS designation
Discoverer Code: A102AB Discover designation and components
ADS number: 12348 Aitken Double Star catalog
HD number: 181782 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.5 Magnitude of the primary
V2: 9.5 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Lin2012a Reference

Double Star Orbit for A102AB



WDS 6th Orbit including measures of A102AB

-- 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 A102AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.228   272.97
--------------------------
1810.50    0.464     8.37
1811.50    0.464     8.65
1812.50    0.464     8.93
1813.50    0.464     9.21
1814.50    0.464     9.49
1815.50    0.464     9.77
1816.50    0.464    10.05
1817.50    0.464    10.33
1818.50    0.464    10.61
1819.50    0.464    10.89
1820.50    0.463    11.17
1821.50    0.463    11.45
1822.50    0.463    11.73
1823.50    0.463    12.01
1824.50    0.463    12.29
1825.50    0.463    12.58
1826.50    0.462    12.86
1827.50    0.462    13.14
1828.50    0.462    13.42
1829.50    0.462    13.71
1830.50    0.461    13.99
1831.50    0.461    14.27
1832.50    0.461    14.56
1833.50    0.460    14.84
1834.50    0.460    15.13
1835.50    0.460    15.41
1836.50    0.459    15.70
1837.50    0.459    15.98
1838.50    0.459    16.27
1839.50    0.458    16.56
1840.50    0.458    16.84
1841.50    0.457    17.13
1842.50    0.457    17.42
1843.50    0.457    17.71
1844.50    0.456    18.00
1845.50    0.456    18.29
1846.50    0.455    18.58
1847.50    0.455    18.87
1848.50    0.454    19.16
1849.50    0.453    19.46
1850.50    0.453    19.75
1851.50    0.452    20.05
1852.50    0.452    20.34
1853.50    0.451    20.64
1854.50    0.450    20.93
1855.50    0.450    21.23
1856.50    0.449    21.53
1857.50    0.448    21.83
1858.50    0.448    22.13
1859.50    0.447    22.43
1860.50    0.446    22.73
1861.50    0.446    23.04
1862.50    0.445    23.34
1863.50    0.444    23.65
1864.50    0.443    23.95
1865.50    0.442    24.26
1866.50    0.442    24.57
1867.50    0.441    24.88
1868.50    0.440    25.19
1869.50    0.439    25.50
1870.50    0.438    25.82
1871.50    0.437    26.13
1872.50    0.436    26.45
1873.50    0.435    26.77
1874.50    0.434    27.09
1875.50    0.433    27.41
1876.50    0.432    27.73
1877.50    0.431    28.05
1878.50    0.430    28.38
1879.50    0.429    28.71
1880.50    0.428    29.04
1881.50    0.427    29.37
1882.50    0.425    29.70
1883.50    0.424    30.03
1884.50    0.423    30.37
1885.50    0.422    30.71
1886.50    0.421    31.05
1887.50    0.419    31.39
1888.50    0.418    31.73
1889.50    0.417    32.08
1890.50    0.415    32.43
1891.50    0.414    32.78
1892.50    0.413    33.13
1893.50    0.411    33.49
1894.50    0.410    33.85
1895.50    0.408    34.21
1896.50    0.407    34.57
1897.50    0.405    34.94
1898.50    0.404    35.30
1899.50    0.402    35.68
1900.50    0.400    36.05
1901.50    0.399    36.43
1902.50    0.397    36.81
1903.50    0.396    37.19
1904.50    0.394    37.58
1905.50    0.392    37.97
1906.50    0.390    38.37
1907.50    0.388    38.76
1908.50    0.387    39.17
1909.50    0.385    39.57
1910.50    0.383    39.98
1911.50    0.381    40.39
1912.50    0.379    40.81
1913.50    0.377    41.23
1914.50    0.375    41.66
1915.50    0.373    42.09
1916.50    0.371    42.53
1917.50    0.369    42.97
1918.50    0.367    43.42
1919.50    0.364    43.87
1920.50    0.362    44.32
1921.50    0.360    44.79
1922.50    0.357    45.26
1923.50    0.355    45.73
1924.50    0.353    46.21
1925.50    0.350    46.70
1926.50    0.348    47.20
1927.50    0.345    47.70
1928.50    0.343    48.21
1929.50    0.340    48.73
1930.50    0.337    49.25
1931.50    0.335    49.79
1932.50    0.332    50.33
1933.50    0.329    50.88
1934.50    0.326    51.44
1935.50    0.324    52.01
1936.50    0.321    52.59
1937.50    0.318    53.19
1938.50    0.315    53.79
1939.50    0.311    54.41
1940.50    0.308    55.03
1941.50    0.305    55.68
1942.50    0.302    56.33
1943.50    0.299    57.00
1944.50    0.295    57.68
1945.50    0.292    58.38
1946.50    0.288    59.10
1947.50    0.285    59.84
1948.50    0.281    60.59
1949.50    0.277    61.37
1950.50    0.274    62.16
1951.50    0.270    62.98
1952.50    0.266    63.82
1953.50    0.262    64.69
1954.50    0.258    65.58
1955.50    0.254    66.50
1956.50    0.249    67.46
1957.50    0.245    68.44
1958.50    0.241    69.47
1959.50    0.236    70.53
1960.50    0.232    71.63
1961.50    0.227    72.77
1962.50    0.222    73.97
1963.50    0.218    75.21
1964.50    0.213    76.52
1965.50    0.208    77.88
1966.50    0.203    79.31
1967.50    0.198    80.82
1968.50    0.192    82.41
1969.50    0.187    84.08
1970.50    0.182    85.85
1971.50    0.176    87.74
1972.50    0.171    89.74
1973.50    0.165    91.88
1974.50    0.160    94.17
1975.50    0.154    96.62
1976.50    0.148    99.26
1977.50    0.143   102.11
1978.50    0.137   105.19
1979.50    0.132   108.54
1980.50    0.126   112.17
1981.50    0.121   116.12
1982.50    0.116   120.41
1983.50    0.111   125.08
1984.50    0.107   130.14
1985.50    0.103   135.59
1986.50    0.100   141.42
1987.50    0.098   147.59
1988.50    0.096   154.05
1989.50    0.095   160.70
1990.50    0.095   167.44
1991.50    0.095   174.13
1992.50    0.097   180.69
1993.50    0.099   187.00
1994.50    0.102   193.01
1995.50    0.105   198.66
1996.50    0.109   203.93
1997.50    0.113   208.84
1998.50    0.117   213.39
1999.50    0.122   217.60
2000.50    0.127   221.51
2001.50    0.131   225.13
2002.50    0.136   228.49
2003.50    0.141   231.63
2004.50    0.146   234.57
2005.50    0.150   237.32
2006.50    0.155   239.90
2007.50    0.160   242.34
2008.50    0.164   244.65
2009.50    0.168   246.83
2010.50    0.173   248.91
2011.50    0.177   250.88
2012.50    0.181   252.77
2013.50    0.185   254.58
2014.50    0.189   256.31
2015.50    0.192   257.98
2016.50    0.196   259.58
2017.50    0.200   261.12
2018.50    0.203   262.61
2019.50    0.206   264.05
2020.50    0.210   265.44
2021.50    0.213   266.79
2022.50    0.216   268.10
2023.50    0.219   269.37
2024.50    0.223   270.60
2025.50    0.226   271.80
2026.50    0.228   272.97
2027.50    0.231   274.12
2028.50    0.234   275.23
2029.50    0.237   276.32
2030.50    0.240   277.38
2031.50    0.242   278.42
2032.50    0.245   279.43
2033.50    0.248   280.42
2034.50    0.250   281.40
2035.50    0.253   282.35
2036.50    0.255   283.29
2037.50    0.258   284.20
2038.50    0.260   285.10
2039.50    0.263   285.99
2040.50    0.265   286.85
2041.50    0.267   287.71
2042.50    0.269   288.54
2043.50    0.272   289.37
2044.50    0.274   290.18
2045.50    0.276   290.98
2046.50    0.278   291.76
2047.50    0.280   292.53
2048.50    0.283   293.30
2049.50    0.285   294.05
2050.50    0.287   294.78
2051.50    0.289   295.51
2052.50    0.291   296.23
2053.50    0.293   296.94
2054.50    0.295   297.64
2055.50    0.297   298.33
2056.50    0.299   299.01
2057.50    0.301   299.68
2058.50    0.302   300.35
2059.50    0.304   301.00
2060.50    0.306   301.65
2061.50    0.308   302.29
2062.50    0.310   302.92
2063.50    0.312   303.55
2064.50    0.313   304.16
2065.50    0.315   304.77
2066.50    0.317   305.38
2067.50    0.319   305.98
2068.50    0.320   306.57
2069.50    0.322   307.15
2070.50    0.324   307.73
2071.50    0.326   308.30
2072.50    0.327   308.87
2073.50    0.329   309.43
2074.50    0.331   309.98
2075.50    0.332   310.53
2076.50    0.334   311.08
2077.50    0.335   311.61
2078.50    0.337   312.15
2079.50    0.339   312.68
2080.50    0.340   313.20
2081.50    0.342   313.72
2082.50    0.343   314.23
2083.50    0.345   314.74
2084.50    0.346   315.25
2085.50    0.348   315.75
2086.50    0.349   316.25
2087.50    0.351   316.74
2088.50    0.352   317.23
2089.50    0.354   317.71
2090.50    0.355   318.19
2091.50    0.357   318.67
2092.50    0.358   319.14
2093.50    0.359   319.61
2094.50    0.361   320.08
2095.50    0.362   320.54
2096.50    0.364   321.00
2097.50    0.365   321.45
2098.50    0.366   321.90
2099.50    0.368   322.35
2100.50    0.369   322.80
2101.50    0.370   323.24
2102.50    0.372   323.68
2103.50    0.373   324.11
2104.50    0.374   324.54
2105.50    0.376   324.97
2106.50    0.377   325.40
2107.50    0.378   325.82
2108.50    0.379   326.24
2109.50    0.381   326.66
2110.50    0.382   327.07
2111.50    0.383   327.49
2112.50    0.384   327.90
2113.50    0.386   328.30
2114.50    0.387   328.71
2115.50    0.388   329.11
2116.50    0.389   329.51
2117.50    0.390   329.91
2118.50    0.391   330.30
2119.50    0.393   330.69
2120.50    0.394   331.09
2121.50    0.395   331.47
2122.50    0.396   331.86
2123.50    0.397   332.24
2124.50    0.398   332.62
2125.50    0.399   333.00
2126.50    0.400   333.38
2127.50    0.402   333.75
2128.50    0.403   334.13
2129.50    0.404   334.50
2130.50    0.405   334.87
2131.50    0.406   335.24
2132.50    0.407   335.60
2133.50    0.408   335.96
2134.50    0.409   336.33
2135.50    0.410   336.69
2136.50    0.411   337.04
2137.50    0.412   337.40
2138.50    0.413   337.75
2139.50    0.414   338.11
2140.50    0.415   338.46
2141.50    0.416   338.81
2142.50    0.417   339.16
2143.50    0.418   339.50
2144.50    0.419   339.85
2145.50    0.420   340.19
2146.50    0.421   340.53
2147.50    0.421   340.87
2148.50    0.422   341.21
2149.50    0.423   341.55
2150.50    0.424   341.89
2151.50    0.425   342.22
2152.50    0.426   342.55
2153.50    0.427   342.89
2154.50    0.428   343.22
2155.50    0.428   343.55
2156.50    0.429   343.87
2157.50    0.430   344.20
2158.50    0.431   344.53
2159.50    0.432   344.85
2160.50    0.432   345.17
2161.50    0.433   345.50
2162.50    0.434   345.82
2163.50    0.435   346.14
2164.50    0.435   346.46
2165.50    0.436   346.77
2166.50    0.437   347.09
2167.50    0.438   347.41
2168.50    0.438   347.72
2169.50    0.439   348.03
2170.50    0.440   348.35
2171.50    0.441   348.66
2172.50    0.441   348.97
2173.50    0.442   349.28
2174.50    0.443   349.58
2175.50    0.443   349.89
2176.50    0.444   350.20
2177.50    0.444   350.50
2178.50    0.445   350.81
2179.50    0.446   351.11
2180.50    0.446   351.42
2181.50    0.447   351.72
2182.50    0.448   352.02
2183.50    0.448   352.32
2184.50    0.449   352.62
2185.50    0.449   352.92
2186.50    0.450   353.22
2187.50    0.450   353.52
2188.50    0.451   353.81
2189.50    0.451   354.11
2190.50    0.452   354.41
2191.50    0.452   354.70
2192.50    0.453   355.00
2193.50    0.453   355.29
2194.50    0.454   355.58
2195.50    0.454   355.88
2196.50    0.455   356.17
2197.50    0.455   356.46
2198.50    0.456   356.75
2199.50    0.456   357.04
2200.50    0.456   357.33
2201.50    0.457   357.62
2202.50    0.457   357.91
2203.50    0.458   358.20
2204.50    0.458   358.49
2205.50    0.458   358.77
2206.50    0.459   359.06
2207.50    0.459   359.35
2208.50    0.459   359.63
2209.50    0.460   359.92
2210.50    0.460     0.20
2211.50    0.460     0.49
2212.50    0.461     0.77
2213.50    0.461     1.06
2214.50    0.461     1.34
2215.50    0.461     1.62
2216.50    0.462     1.91
2217.50    0.462     2.19
2218.50    0.462     2.47
2219.50    0.462     2.75
2220.50    0.463     3.04
2221.50    0.463     3.32
2222.50    0.463     3.60
2223.50    0.463     3.88
2224.50    0.463     4.16
2225.50    0.463     4.44
2226.50    0.464     4.72
2227.50    0.464     5.01
2228.50    0.464     5.29
2229.50    0.464     5.57
2230.50    0.464     5.85
2231.50    0.464     6.13
2232.50    0.464     6.41
2233.50    0.464     6.69
2234.50    0.464     6.97
2235.50    0.464     7.25
2236.50    0.464     7.53
2237.50    0.464     7.81
2238.50    0.464     8.09






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 18:03:35



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