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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:11:45

Orbital Elements for A2780AA,AB
WDS: A2780AA,AB WDS ID/Discoverer
P: 297.000 Orbital period (years)
a: 0.494 Semi-major axis (arcseconds)
i: 119.6 Inclination (degrees)
Ω: 174.4 Longitude of ascending node (degrees)
T: 2018.728 Epoch of periastron passage (year)
e: 0.932 Eccentricity
ω: 116.3 Longitude of periastron (degrees)
Start-Year: 1877.0 Year
End-Year: 2173.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2780AA,AB
Position: 123009.01-065304.7 Epoch-2000 right ascension and declination
WDS-ID: 12301-0653 WDS designation
Discoverer Code: A2780AA,AB Discover designation and components
ADS number: 8574 Aitken Double Star catalog
HD number: 108808 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.4 Magnitude of the primary
V2: 10.4 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2019 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2780AA,AB



WDS 6th Orbit including measures of A2780AA,AB

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


Ephemeris of A2780AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.102    302.7
-------------------------
1877.0     0.603    218.4
1878.0     0.604    218.2
1879.0     0.605    218.1
1880.0     0.605    218.0
1881.0     0.606    217.8
1882.0     0.607    217.7
1883.0     0.607    217.5
1884.0     0.608    217.4
1885.0     0.608    217.2
1886.0     0.609    217.1
1887.0     0.609    216.9
1888.0     0.609    216.8
1889.0     0.610    216.7
1890.0     0.610    216.5
1891.0     0.610    216.4
1892.0     0.610    216.2
1893.0     0.610    216.1
1894.0     0.611    216.0
1895.0     0.611    215.8
1896.0     0.611    215.7
1897.0     0.611    215.5
1898.0     0.611    215.4
1899.0     0.611    215.2
1900.0     0.611    215.1
1901.0     0.611    215.0
1902.0     0.610    214.8
1903.0     0.610    214.7
1904.0     0.610    214.5
1905.0     0.610    214.4
1906.0     0.609    214.2
1907.0     0.609    214.1
1908.0     0.609    214.0
1909.0     0.608    213.8
1910.0     0.608    213.7
1911.0     0.607    213.5
1912.0     0.607    213.4
1913.0     0.606    213.2
1914.0     0.606    213.1
1915.0     0.605    213.0
1916.0     0.604    212.8
1917.0     0.603    212.7
1918.0     0.603    212.5
1919.0     0.602    212.4
1920.0     0.601    212.2
1921.0     0.600    212.1
1922.0     0.599    211.9
1923.0     0.598    211.8
1924.0     0.597    211.6
1925.0     0.596    211.5
1926.0     0.595    211.3
1927.0     0.594    211.2
1928.0     0.592    211.0
1929.0     0.591    210.9
1930.0     0.590    210.7
1931.0     0.588    210.6
1932.0     0.587    210.4
1933.0     0.586    210.3
1934.0     0.584    210.1
1935.0     0.582    210.0
1936.0     0.581    209.8
1937.0     0.579    209.7
1938.0     0.578    209.5
1939.0     0.576    209.3
1940.0     0.574    209.2
1941.0     0.572    209.0
1942.0     0.570    208.8
1943.0     0.568    208.7
1944.0     0.566    208.5
1945.0     0.564    208.4
1946.0     0.562    208.2
1947.0     0.560    208.0
1948.0     0.557    207.9
1949.0     0.555    207.7
1950.0     0.553    207.5
1951.0     0.550    207.3
1952.0     0.548    207.2
1953.0     0.545    207.0
1954.0     0.543    206.8
1955.0     0.540    206.6
1956.0     0.537    206.4
1957.0     0.534    206.3
1958.0     0.531    206.1
1959.0     0.528    205.9
1960.0     0.525    205.7
1961.0     0.522    205.5
1962.0     0.519    205.3
1963.0     0.516    205.1
1964.0     0.512    204.9
1965.0     0.509    204.7
1966.0     0.506    204.5
1967.0     0.502    204.3
1968.0     0.498    204.1
1969.0     0.495    203.9
1970.0     0.491    203.6
1971.0     0.487    203.4
1972.0     0.483    203.2
1973.0     0.479    203.0
1974.0     0.474    202.7
1975.0     0.470    202.5
1976.0     0.466    202.2
1977.0     0.461    202.0
1978.0     0.456    201.8
1979.0     0.452    201.5
1980.0     0.447    201.2
1981.0     0.442    201.0
1982.0     0.437    200.7
1983.0     0.432    200.4
1984.0     0.426    200.1
1985.0     0.421    199.8
1986.0     0.415    199.5
1987.0     0.409    199.2
1988.0     0.403    198.9
1989.0     0.397    198.6
1990.0     0.391    198.2
1991.0     0.384    197.9
1992.0     0.378    197.5
1993.0     0.371    197.1
1994.0     0.364    196.7
1995.0     0.357    196.3
1996.0     0.349    195.9
1997.0     0.341    195.5
1998.0     0.333    195.0
1999.0     0.325    194.5
2000.0     0.316    194.0
2001.0     0.308    193.4
2002.0     0.298    192.9
2003.0     0.289    192.2
2004.0     0.279    191.6
2005.0     0.268    190.9
2006.0     0.257    190.1
2007.0     0.246    189.3
2008.0     0.234    188.4
2009.0     0.221    187.3
2010.0     0.207    186.2
2011.0     0.193    184.8
2012.0     0.177    183.3
2013.0     0.160    181.4
2014.0     0.141    179.1
2015.0     0.120    175.9
2016.0     0.095    171.3
2017.0     0.065    162.9
2018.0     0.029    135.5
2019.0     0.030     16.0
2020.0     0.055    345.4
2021.0     0.069    331.7
2022.0     0.079    322.1
2023.0     0.088    314.5
2024.0     0.095    308.2
2025.0     0.102    302.7
2026.0     0.109    298.0
2027.0     0.116    293.8
2028.0     0.122    290.1
2029.0     0.129    286.7
2030.0     0.135    283.7
2031.0     0.142    281.0
2032.0     0.148    278.4
2033.0     0.154    276.1
2034.0     0.161    274.0
2035.0     0.167    272.0
2036.0     0.173    270.2
2037.0     0.179    268.5
2038.0     0.185    266.9
2039.0     0.191    265.4
2040.0     0.197    264.0
2041.0     0.203    262.6
2042.0     0.208    261.4
2043.0     0.214    260.2
2044.0     0.220    259.1
2045.0     0.225    258.0
2046.0     0.231    257.0
2047.0     0.236    256.0
2048.0     0.242    255.1
2049.0     0.247    254.2
2050.0     0.253    253.3
2051.0     0.258    252.5
2052.0     0.263    251.8
2053.0     0.268    251.0
2054.0     0.274    250.3
2055.0     0.279    249.6
2056.0     0.284    248.9
2057.0     0.289    248.3
2058.0     0.294    247.6
2059.0     0.298    247.0
2060.0     0.303    246.5
2061.0     0.308    245.9
2062.0     0.313    245.3
2063.0     0.317    244.8
2064.0     0.322    244.3
2065.0     0.327    243.8
2066.0     0.331    243.3
2067.0     0.336    242.8
2068.0     0.340    242.4
2069.0     0.345    241.9
2070.0     0.349    241.5
2071.0     0.353    241.0
2072.0     0.358    240.6
2073.0     0.362    240.2
2074.0     0.366    239.8
2075.0     0.370    239.4
2076.0     0.374    239.0
2077.0     0.378    238.7
2078.0     0.382    238.3
2079.0     0.386    237.9
2080.0     0.390    237.6
2081.0     0.394    237.2
2082.0     0.398    236.9
2083.0     0.402    236.6
2084.0     0.406    236.2
2085.0     0.409    235.9
2086.0     0.413    235.6
2087.0     0.417    235.3
2088.0     0.420    235.0
2089.0     0.424    234.7
2090.0     0.427    234.4
2091.0     0.431    234.1
2092.0     0.434    233.8
2093.0     0.438    233.6
2094.0     0.441    233.3
2095.0     0.445    233.0
2096.0     0.448    232.7
2097.0     0.451    232.5
2098.0     0.454    232.2
2099.0     0.458    232.0
2100.0     0.461    231.7
2101.0     0.464    231.5
2102.0     0.467    231.2
2103.0     0.470    231.0
2104.0     0.473    230.8
2105.0     0.476    230.5
2106.0     0.479    230.3
2107.0     0.482    230.1
2108.0     0.485    229.8
2109.0     0.488    229.6
2110.0     0.491    229.4
2111.0     0.494    229.2
2112.0     0.496    228.9
2113.0     0.499    228.7
2114.0     0.502    228.5
2115.0     0.504    228.3
2116.0     0.507    228.1
2117.0     0.510    227.9
2118.0     0.512    227.7
2119.0     0.515    227.5
2120.0     0.517    227.3
2121.0     0.520    227.1
2122.0     0.522    226.9
2123.0     0.524    226.7
2124.0     0.527    226.5
2125.0     0.529    226.3
2126.0     0.531    226.1
2127.0     0.534    226.0
2128.0     0.536    225.8
2129.0     0.538    225.6
2130.0     0.540    225.4
2131.0     0.542    225.2
2132.0     0.545    225.0
2133.0     0.547    224.9
2134.0     0.549    224.7
2135.0     0.551    224.5
2136.0     0.553    224.3
2137.0     0.555    224.2
2138.0     0.556    224.0
2139.0     0.558    223.8
2140.0     0.560    223.7
2141.0     0.562    223.5
2142.0     0.564    223.3
2143.0     0.565    223.2
2144.0     0.567    223.0
2145.0     0.569    222.8
2146.0     0.571    222.7
2147.0     0.572    222.5
2148.0     0.574    222.3
2149.0     0.575    222.2
2150.0     0.577    222.0
2151.0     0.578    221.9
2152.0     0.580    221.7
2153.0     0.581    221.5
2154.0     0.583    221.4
2155.0     0.584    221.2
2156.0     0.585    221.1
2157.0     0.587    220.9
2158.0     0.588    220.8
2159.0     0.589    220.6
2160.0     0.590    220.5
2161.0     0.591    220.3
2162.0     0.592    220.2
2163.0     0.594    220.0
2164.0     0.595    219.9
2165.0     0.596    219.7
2166.0     0.597    219.6
2167.0     0.598    219.4
2168.0     0.599    219.3
2169.0     0.599    219.1
2170.0     0.600    219.0
2171.0     0.601    218.8
2172.0     0.602    218.7



 

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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