Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:19:15

Orbital Elements for A647
WDS: A647 WDS ID/Discoverer
P: 372.700 Orbital period (years)
a: 0.947 Semi-major axis (arcseconds)
i: 122.0 Inclination (degrees)
Ω: 39.4 Longitude of ascending node (degrees)
T: 1876.010 Epoch of periastron passage (year)
e: 0.292 Eccentricity
ω: 136.8 Longitude of periastron (degrees)
Start-Year: 1839.0 Year
End-Year: 2211.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A647
Position: 002033.00+453032.2 Epoch-2000 right ascension and declination
WDS-ID: 00205+4531 WDS designation
Discoverer Code: A647 Discover designation and components
ADS number: 277 Aitken Double Star catalog
HD number: 1614 HD catalog number
Hipparcos number: 1642 Hipparcos catalog number
V1: 7.17 Magnitude of the primary
V2: 9.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2006 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A647



WDS 6th Orbit including measures of A647

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of A647
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.768     87.1
-------------------------
1839.0     0.440    337.1
1840.0     0.431    334.7
1841.0     0.423    332.3
1842.0     0.416    329.8
1843.0     0.409    327.3
1844.0     0.403    324.6
1845.0     0.398    321.9
1846.0     0.393    319.1
1847.0     0.389    316.2
1848.0     0.386    313.3
1849.0     0.383    310.3
1850.0     0.381    307.3
1851.0     0.381    304.3
1852.0     0.380    301.2
1853.0     0.381    298.2
1854.0     0.383    295.2
1855.0     0.385    292.2
1856.0     0.388    289.3
1857.0     0.392    286.4
1858.0     0.396    283.5
1859.0     0.402    280.8
1860.0     0.407    278.1
1861.0     0.414    275.5
1862.0     0.420    273.0
1863.0     0.428    270.5
1864.0     0.436    268.2
1865.0     0.444    265.9
1866.0     0.452    263.7
1867.0     0.461    261.6
1868.0     0.470    259.6
1869.0     0.479    257.6
1870.0     0.488    255.8
1871.0     0.498    253.9
1872.0     0.508    252.2
1873.0     0.517    250.5
1874.0     0.527    248.9
1875.0     0.536    247.4
1876.0     0.546    245.9
1877.0     0.555    244.4
1878.0     0.565    243.0
1879.0     0.574    241.7
1880.0     0.583    240.4
1881.0     0.592    239.1
1882.0     0.601    237.8
1883.0     0.609    236.6
1884.0     0.617    235.5
1885.0     0.626    234.3
1886.0     0.633    233.2
1887.0     0.641    232.2
1888.0     0.648    231.1
1889.0     0.655    230.1
1890.0     0.662    229.1
1891.0     0.668    228.1
1892.0     0.675    227.1
1893.0     0.680    226.1
1894.0     0.686    225.2
1895.0     0.691    224.3
1896.0     0.696    223.4
1897.0     0.701    222.5
1898.0     0.705    221.6
1899.0     0.709    220.7
1900.0     0.713    219.8
1901.0     0.716    219.0
1902.0     0.719    218.1
1903.0     0.722    217.3
1904.0     0.724    216.4
1905.0     0.726    215.6
1906.0     0.728    214.8
1907.0     0.729    213.9
1908.0     0.731    213.1
1909.0     0.732    212.3
1910.0     0.732    211.5
1911.0     0.733    210.6
1912.0     0.733    209.8
1913.0     0.733    209.0
1914.0     0.732    208.2
1915.0     0.732    207.4
1916.0     0.731    206.6
1917.0     0.730    205.7
1918.0     0.729    204.9
1919.0     0.727    204.1
1920.0     0.725    203.2
1921.0     0.724    202.4
1922.0     0.721    201.6
1923.0     0.719    200.7
1924.0     0.717    199.9
1925.0     0.714    199.0
1926.0     0.711    198.1
1927.0     0.708    197.3
1928.0     0.705    196.4
1929.0     0.702    195.5
1930.0     0.699    194.6
1931.0     0.696    193.7
1932.0     0.692    192.8
1933.0     0.688    191.9
1934.0     0.685    190.9
1935.0     0.681    190.0
1936.0     0.677    189.1
1937.0     0.673    188.1
1938.0     0.669    187.1
1939.0     0.665    186.1
1940.0     0.661    185.1
1941.0     0.657    184.1
1942.0     0.653    183.1
1943.0     0.649    182.1
1944.0     0.645    181.0
1945.0     0.641    180.0
1946.0     0.637    178.9
1947.0     0.633    177.8
1948.0     0.629    176.7
1949.0     0.625    175.6
1950.0     0.622    174.4
1951.0     0.618    173.3
1952.0     0.614    172.1
1953.0     0.610    171.0
1954.0     0.607    169.8
1955.0     0.604    168.6
1956.0     0.600    167.4
1957.0     0.597    166.2
1958.0     0.594    164.9
1959.0     0.591    163.7
1960.0     0.588    162.4
1961.0     0.585    161.1
1962.0     0.583    159.8
1963.0     0.580    158.5
1964.0     0.578    157.2
1965.0     0.576    155.9
1966.0     0.574    154.6
1967.0     0.572    153.2
1968.0     0.571    151.9
1969.0     0.569    150.6
1970.0     0.568    149.2
1971.0     0.567    147.8
1972.0     0.566    146.5
1973.0     0.566    145.1
1974.0     0.565    143.7
1975.0     0.565    142.3
1976.0     0.565    141.0
1977.0     0.565    139.6
1978.0     0.566    138.2
1979.0     0.566    136.9
1980.0     0.567    135.5
1981.0     0.568    134.1
1982.0     0.570    132.8
1983.0     0.571    131.4
1984.0     0.573    130.1
1985.0     0.575    128.7
1986.0     0.577    127.4
1987.0     0.579    126.1
1988.0     0.582    124.8
1989.0     0.584    123.5
1990.0     0.587    122.2
1991.0     0.590    121.0
1992.0     0.593    119.7
1993.0     0.597    118.5
1994.0     0.600    117.2
1995.0     0.604    116.0
1996.0     0.608    114.8
1997.0     0.612    113.7
1998.0     0.616    112.5
1999.0     0.620    111.3
2000.0     0.625    110.2
2001.0     0.630    109.1
2002.0     0.634    108.0
2003.0     0.639    106.9
2004.0     0.644    105.8
2005.0     0.649    104.8
2006.0     0.655    103.8
2007.0     0.660    102.7
2008.0     0.665    101.7
2009.0     0.671    100.8
2010.0     0.677     99.8
2011.0     0.682     98.8
2012.0     0.688     97.9
2013.0     0.694     97.0
2014.0     0.700     96.1
2015.0     0.706     95.2
2016.0     0.712     94.3
2017.0     0.718     93.5
2018.0     0.724     92.6
2019.0     0.730     91.8
2020.0     0.737     91.0
2021.0     0.743     90.2
2022.0     0.749     89.4
2023.0     0.756     88.6
2024.0     0.762     87.8
2025.0     0.768     87.1
2026.0     0.775     86.4
2027.0     0.781     85.6
2028.0     0.788     84.9
2029.0     0.794     84.2
2030.0     0.801     83.5
2031.0     0.807     82.9
2032.0     0.814     82.2
2033.0     0.820     81.5
2034.0     0.827     80.9
2035.0     0.833     80.2
2036.0     0.840     79.6
2037.0     0.846     79.0
2038.0     0.852     78.4
2039.0     0.859     77.8
2040.0     0.865     77.2
2041.0     0.871     76.6
2042.0     0.878     76.0
2043.0     0.884     75.5
2044.0     0.890     74.9
2045.0     0.897     74.4
2046.0     0.903     73.8
2047.0     0.909     73.3
2048.0     0.915     72.8
2049.0     0.921     72.2
2050.0     0.927     71.7
2051.0     0.933     71.2
2052.0     0.939     70.7
2053.0     0.945     70.2
2054.0     0.950     69.7
2055.0     0.956     69.2
2056.0     0.962     68.8
2057.0     0.967     68.3
2058.0     0.973     67.8
2059.0     0.978     67.4
2060.0     0.984     66.9
2061.0     0.989     66.5
2062.0     0.994     66.0
2063.0     1.000     65.6
2064.0     1.005     65.1
2065.0     1.010     64.7
2066.0     1.015     64.3
2067.0     1.020     63.9
2068.0     1.024     63.4
2069.0     1.029     63.0
2070.0     1.034     62.6
2071.0     1.038     62.2
2072.0     1.043     61.8
2073.0     1.047     61.4
2074.0     1.052     61.0
2075.0     1.056     60.6
2076.0     1.060     60.2
2077.0     1.064     59.8
2078.0     1.068     59.4
2079.0     1.072     59.0
2080.0     1.076     58.7
2081.0     1.079     58.3
2082.0     1.083     57.9
2083.0     1.086     57.5
2084.0     1.090     57.2
2085.0     1.093     56.8
2086.0     1.096     56.4
2087.0     1.099     56.1
2088.0     1.102     55.7
2089.0     1.105     55.3
2090.0     1.108     55.0
2091.0     1.110     54.6
2092.0     1.113     54.3
2093.0     1.115     53.9
2094.0     1.117     53.6
2095.0     1.120     53.2
2096.0     1.122     52.9
2097.0     1.124     52.5
2098.0     1.125     52.2
2099.0     1.127     51.8
2100.0     1.129     51.5
2101.0     1.130     51.1
2102.0     1.131     50.8
2103.0     1.133     50.4
2104.0     1.134     50.1
2105.0     1.135     49.8
2106.0     1.136     49.4
2107.0     1.136     49.1
2108.0     1.137     48.7
2109.0     1.137     48.4
2110.0     1.138     48.1
2111.0     1.138     47.7
2112.0     1.138     47.4
2113.0     1.138     47.0
2114.0     1.138     46.7
2115.0     1.137     46.4
2116.0     1.137     46.0
2117.0     1.136     45.7
2118.0     1.136     45.3
2119.0     1.135     45.0
2120.0     1.134     44.7
2121.0     1.132     44.3
2122.0     1.131     44.0
2123.0     1.130     43.6
2124.0     1.128     43.3
2125.0     1.126     42.9
2126.0     1.124     42.6
2127.0     1.122     42.3
2128.0     1.120     41.9
2129.0     1.118     41.6
2130.0     1.115     41.2
2131.0     1.113     40.8
2132.0     1.110     40.5
2133.0     1.107     40.1
2134.0     1.104     39.8
2135.0     1.101     39.4
2136.0     1.097     39.0
2137.0     1.094     38.7
2138.0     1.090     38.3
2139.0     1.086     37.9
2140.0     1.082     37.6
2141.0     1.078     37.2
2142.0     1.073     36.8
2143.0     1.069     36.4
2144.0     1.064     36.0
2145.0     1.059     35.7
2146.0     1.054     35.3
2147.0     1.049     34.9
2148.0     1.044     34.5
2149.0     1.038     34.1
2150.0     1.033     33.7
2151.0     1.027     33.2
2152.0     1.021     32.8
2153.0     1.015     32.4
2154.0     1.008     32.0
2155.0     1.002     31.5
2156.0     0.995     31.1
2157.0     0.989     30.6
2158.0     0.982     30.2
2159.0     0.974     29.7
2160.0     0.967     29.3
2161.0     0.960     28.8
2162.0     0.952     28.3
2163.0     0.944     27.8
2164.0     0.936     27.3
2165.0     0.928     26.8
2166.0     0.920     26.3
2167.0     0.911     25.8
2168.0     0.903     25.3
2169.0     0.894     24.7
2170.0     0.885     24.2
2171.0     0.876     23.6
2172.0     0.867     23.0
2173.0     0.857     22.4
2174.0     0.848     21.8
2175.0     0.838     21.2
2176.0     0.828     20.6
2177.0     0.818     19.9
2178.0     0.808     19.3
2179.0     0.798     18.6
2180.0     0.787     17.9
2181.0     0.777     17.2
2182.0     0.766     16.4
2183.0     0.755     15.7
2184.0     0.745     14.9
2185.0     0.734     14.1
2186.0     0.722     13.2
2187.0     0.711     12.4
2188.0     0.700     11.5
2189.0     0.689     10.6
2190.0     0.677      9.7
2191.0     0.666      8.7
2192.0     0.654      7.7
2193.0     0.643      6.6
2194.0     0.631      5.5
2195.0     0.619      4.4
2196.0     0.608      3.3
2197.0     0.596      2.0
2198.0     0.584      0.8
2199.0     0.573    359.5
2200.0     0.561    358.1
2201.0     0.550    356.7
2202.0     0.539    355.2
2203.0     0.527    353.7
2204.0     0.516    352.0
2205.0     0.505    350.4
2206.0     0.495    348.6
2207.0     0.484    346.8
2208.0     0.474    344.9
2209.0     0.464    342.9
2210.0     0.455    340.8






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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