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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:40:52

Orbital Elements for A2784AB
WDS: A2784AB WDS ID/Discoverer
P: 400.100 Orbital period (years)
a: 0.407 Semi-major axis (arcseconds)
i: 44.0 Inclination (degrees)
Ω: 139.7 Longitude of ascending node (degrees)
T: 1895.600 Epoch of periastron passage (year)
e: 0.12 Eccentricity
ω: 276.6 Longitude of periastron (degrees)
Start-Year: 1825.0 Year
End-Year: 2225.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2784AB
Position: 164646.24+082231.6 Epoch-2000 right ascension and declination
WDS-ID: 16468+0821 WDS designation
Discoverer Code: A2784AB Discover designation and components
ADS number: 10206 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.8 Magnitude of the primary
V2: 11.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2017 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2784AB



WDS 6th Orbit including measures of A2784AB

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


Ephemeris of A2784AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.378    175.0
-------------------------
1825.0     0.379    334.4
1826.0     0.377    335.1
1827.0     0.375    335.9
1828.0     0.374    336.6
1829.0     0.372    337.4
1830.0     0.370    338.2
1831.0     0.368    339.0
1832.0     0.366    339.7
1833.0     0.364    340.5
1834.0     0.361    341.4
1835.0     0.359    342.2
1836.0     0.357    343.0
1837.0     0.355    343.8
1838.0     0.353    344.7
1839.0     0.350    345.6
1840.0     0.348    346.4
1841.0     0.346    347.3
1842.0     0.343    348.2
1843.0     0.341    349.1
1844.0     0.339    350.0
1845.0     0.336    351.0
1846.0     0.334    351.9
1847.0     0.331    352.9
1848.0     0.329    353.9
1849.0     0.327    354.9
1850.0     0.324    355.9
1851.0     0.322    356.9
1852.0     0.319    357.9
1853.0     0.317    359.0
1854.0     0.314      0.0
1855.0     0.312      1.1
1856.0     0.310      2.2
1857.0     0.307      3.3
1858.0     0.305      4.5
1859.0     0.302      5.6
1860.0     0.300      6.8
1861.0     0.298      8.0
1862.0     0.295      9.2
1863.0     0.293     10.4
1864.0     0.291     11.7
1865.0     0.289     13.0
1866.0     0.287     14.2
1867.0     0.285     15.5
1868.0     0.283     16.9
1869.0     0.281     18.2
1870.0     0.279     19.6
1871.0     0.277     21.0
1872.0     0.275     22.4
1873.0     0.273     23.8
1874.0     0.272     25.2
1875.0     0.270     26.6
1876.0     0.269     28.1
1877.0     0.267     29.6
1878.0     0.266     31.1
1879.0     0.265     32.6
1880.0     0.264     34.1
1881.0     0.263     35.7
1882.0     0.262     37.2
1883.0     0.261     38.8
1884.0     0.260     40.3
1885.0     0.259     41.9
1886.0     0.259     43.5
1887.0     0.258     45.1
1888.0     0.258     46.7
1889.0     0.258     48.3
1890.0     0.258     49.9
1891.0     0.258     51.5
1892.0     0.258     53.1
1893.0     0.258     54.7
1894.0     0.258     56.3
1895.0     0.259     57.9
1896.0     0.259     59.5
1897.0     0.260     61.0
1898.0     0.261     62.6
1899.0     0.262     64.2
1900.0     0.263     65.7
1901.0     0.264     67.3
1902.0     0.265     68.8
1903.0     0.266     70.3
1904.0     0.267     71.8
1905.0     0.269     73.3
1906.0     0.270     74.7
1907.0     0.272     76.2
1908.0     0.273     77.6
1909.0     0.275     79.0
1910.0     0.277     80.4
1911.0     0.279     81.8
1912.0     0.281     83.2
1913.0     0.282     84.5
1914.0     0.284     85.8
1915.0     0.287     87.2
1916.0     0.289     88.4
1917.0     0.291     89.7
1918.0     0.293     91.0
1919.0     0.295     92.2
1920.0     0.297     93.4
1921.0     0.300     94.6
1922.0     0.302     95.8
1923.0     0.304     96.9
1924.0     0.307     98.1
1925.0     0.309     99.2
1926.0     0.311    100.3
1927.0     0.314    101.4
1928.0     0.316    102.5
1929.0     0.318    103.5
1930.0     0.321    104.6
1931.0     0.323    105.6
1932.0     0.325    106.6
1933.0     0.328    107.6
1934.0     0.330    108.6
1935.0     0.332    109.6
1936.0     0.335    110.5
1937.0     0.337    111.5
1938.0     0.339    112.4
1939.0     0.342    113.3
1940.0     0.344    114.2
1941.0     0.346    115.1
1942.0     0.348    116.0
1943.0     0.350    116.9
1944.0     0.352    117.7
1945.0     0.355    118.6
1946.0     0.357    119.4
1947.0     0.359    120.3
1948.0     0.361    121.1
1949.0     0.363    121.9
1950.0     0.364    122.7
1951.0     0.366    123.5
1952.0     0.368    124.3
1953.0     0.370    125.1
1954.0     0.372    125.8
1955.0     0.373    126.6
1956.0     0.375    127.4
1957.0     0.377    128.1
1958.0     0.378    128.9
1959.0     0.380    129.6
1960.0     0.381    130.3
1961.0     0.382    131.1
1962.0     0.384    131.8
1963.0     0.385    132.5
1964.0     0.386    133.2
1965.0     0.388    133.9
1966.0     0.389    134.7
1967.0     0.390    135.4
1968.0     0.391    136.1
1969.0     0.392    136.8
1970.0     0.393    137.4
1971.0     0.394    138.1
1972.0     0.395    138.8
1973.0     0.395    139.5
1974.0     0.396    140.2
1975.0     0.397    140.9
1976.0     0.398    141.5
1977.0     0.398    142.2
1978.0     0.399    142.9
1979.0     0.399    143.5
1980.0     0.400    144.2
1981.0     0.400    144.9
1982.0     0.400    145.5
1983.0     0.401    146.2
1984.0     0.401    146.9
1985.0     0.401    147.5
1986.0     0.401    148.2
1987.0     0.402    148.8
1988.0     0.402    149.5
1989.0     0.402    150.2
1990.0     0.402    150.8
1991.0     0.402    151.5
1992.0     0.401    152.1
1993.0     0.401    152.8
1994.0     0.401    153.5
1995.0     0.401    154.1
1996.0     0.401    154.8
1997.0     0.400    155.5
1998.0     0.400    156.1
1999.0     0.400    156.8
2000.0     0.399    157.5
2001.0     0.399    158.1
2002.0     0.398    158.8
2003.0     0.398    159.5
2004.0     0.397    160.1
2005.0     0.396    160.8
2006.0     0.396    161.5
2007.0     0.395    162.2
2008.0     0.394    162.9
2009.0     0.394    163.5
2010.0     0.393    164.2
2011.0     0.392    164.9
2012.0     0.391    165.6
2013.0     0.390    166.3
2014.0     0.389    167.0
2015.0     0.389    167.7
2016.0     0.388    168.4
2017.0     0.387    169.1
2018.0     0.386    169.8
2019.0     0.385    170.6
2020.0     0.384    171.3
2021.0     0.383    172.0
2022.0     0.382    172.7
2023.0     0.380    173.5
2024.0     0.379    174.2
2025.0     0.378    175.0
2026.0     0.377    175.7
2027.0     0.376    176.4
2028.0     0.375    177.2
2029.0     0.374    178.0
2030.0     0.373    178.7
2031.0     0.371    179.5
2032.0     0.370    180.3
2033.0     0.369    181.1
2034.0     0.368    181.8
2035.0     0.367    182.6
2036.0     0.365    183.4
2037.0     0.364    184.2
2038.0     0.363    185.0
2039.0     0.362    185.8
2040.0     0.361    186.6
2041.0     0.359    187.5
2042.0     0.358    188.3
2043.0     0.357    189.1
2044.0     0.356    190.0
2045.0     0.355    190.8
2046.0     0.354    191.7
2047.0     0.352    192.5
2048.0     0.351    193.4
2049.0     0.350    194.2
2050.0     0.349    195.1
2051.0     0.348    196.0
2052.0     0.347    196.9
2053.0     0.346    197.7
2054.0     0.345    198.6
2055.0     0.344    199.5
2056.0     0.343    200.4
2057.0     0.342    201.3
2058.0     0.341    202.3
2059.0     0.340    203.2
2060.0     0.339    204.1
2061.0     0.338    205.0
2062.0     0.337    206.0
2063.0     0.337    206.9
2064.0     0.336    207.8
2065.0     0.335    208.8
2066.0     0.334    209.7
2067.0     0.334    210.7
2068.0     0.333    211.6
2069.0     0.332    212.6
2070.0     0.332    213.6
2071.0     0.331    214.5
2072.0     0.331    215.5
2073.0     0.330    216.5
2074.0     0.330    217.5
2075.0     0.329    218.4
2076.0     0.329    219.4
2077.0     0.329    220.4
2078.0     0.328    221.4
2079.0     0.328    222.4
2080.0     0.328    223.4
2081.0     0.328    224.4
2082.0     0.328    225.3
2083.0     0.328    226.3
2084.0     0.328    227.3
2085.0     0.328    228.3
2086.0     0.328    229.3
2087.0     0.328    230.3
2088.0     0.328    231.3
2089.0     0.328    232.3
2090.0     0.328    233.3
2091.0     0.328    234.3
2092.0     0.329    235.3
2093.0     0.329    236.2
2094.0     0.329    237.2
2095.0     0.330    238.2
2096.0     0.330    239.2
2097.0     0.331    240.2
2098.0     0.331    241.1
2099.0     0.332    242.1
2100.0     0.332    243.1
2101.0     0.333    244.0
2102.0     0.333    245.0
2103.0     0.334    245.9
2104.0     0.335    246.9
2105.0     0.336    247.8
2106.0     0.336    248.8
2107.0     0.337    249.7
2108.0     0.338    250.7
2109.0     0.339    251.6
2110.0     0.340    252.5
2111.0     0.341    253.4
2112.0     0.342    254.3
2113.0     0.343    255.3
2114.0     0.344    256.2
2115.0     0.345    257.1
2116.0     0.346    258.0
2117.0     0.347    258.8
2118.0     0.348    259.7
2119.0     0.349    260.6
2120.0     0.350    261.5
2121.0     0.351    262.3
2122.0     0.352    263.2
2123.0     0.354    264.0
2124.0     0.355    264.9
2125.0     0.356    265.7
2126.0     0.357    266.6
2127.0     0.359    267.4
2128.0     0.360    268.2
2129.0     0.361    269.1
2130.0     0.362    269.9
2131.0     0.364    270.7
2132.0     0.365    271.5
2133.0     0.366    272.3
2134.0     0.367    273.1
2135.0     0.369    273.9
2136.0     0.370    274.6
2137.0     0.371    275.4
2138.0     0.373    276.2
2139.0     0.374    276.9
2140.0     0.375    277.7
2141.0     0.376    278.5
2142.0     0.378    279.2
2143.0     0.379    279.9
2144.0     0.380    280.7
2145.0     0.381    281.4
2146.0     0.383    282.1
2147.0     0.384    282.9
2148.0     0.385    283.6
2149.0     0.386    284.3
2150.0     0.387    285.0
2151.0     0.389    285.7
2152.0     0.390    286.4
2153.0     0.391    287.1
2154.0     0.392    287.8
2155.0     0.393    288.5
2156.0     0.394    289.2
2157.0     0.395    289.9
2158.0     0.396    290.6
2159.0     0.397    291.2
2160.0     0.398    291.9
2161.0     0.399    292.6
2162.0     0.400    293.2
2163.0     0.401    293.9
2164.0     0.402    294.6
2165.0     0.403    295.2
2166.0     0.404    295.9
2167.0     0.404    296.5
2168.0     0.405    297.2
2169.0     0.406    297.8
2170.0     0.407    298.5
2171.0     0.407    299.1
2172.0     0.408    299.8
2173.0     0.409    300.4
2174.0     0.409    301.0
2175.0     0.410    301.7
2176.0     0.410    302.3
2177.0     0.411    302.9
2178.0     0.411    303.6
2179.0     0.411    304.2
2180.0     0.412    304.8
2181.0     0.412    305.5
2182.0     0.412    306.1
2183.0     0.412    306.7
2184.0     0.413    307.3
2185.0     0.413    308.0
2186.0     0.413    308.6
2187.0     0.413    309.2
2188.0     0.413    309.8
2189.0     0.413    310.5
2190.0     0.413    311.1
2191.0     0.413    311.7
2192.0     0.412    312.3
2193.0     0.412    313.0
2194.0     0.412    313.6
2195.0     0.412    314.2
2196.0     0.411    314.8
2197.0     0.411    315.5
2198.0     0.410    316.1
2199.0     0.410    316.7
2200.0     0.409    317.4
2201.0     0.409    318.0
2202.0     0.408    318.6
2203.0     0.407    319.3
2204.0     0.406    319.9
2205.0     0.406    320.6
2206.0     0.405    321.2
2207.0     0.404    321.9
2208.0     0.403    322.5
2209.0     0.402    323.2
2210.0     0.401    323.8
2211.0     0.400    324.5
2212.0     0.399    325.2
2213.0     0.397    325.9
2214.0     0.396    326.5
2215.0     0.395    327.2
2216.0     0.394    327.9
2217.0     0.392    328.6
2218.0     0.391    329.3
2219.0     0.389    330.0
2220.0     0.388    330.7
2221.0     0.386    331.4
2222.0     0.384    332.1
2223.0     0.383    332.8
2224.0     0.381    333.6






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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