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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:51:37

Orbital Elements for A980AB
WDS: A980AB WDS ID/Discoverer
P: 231.000 Orbital period (years)
a: 0.38 Semi-major axis (arcseconds)
i: 133.4 Inclination (degrees)
Ω: 147.7 Longitude of ascending node (degrees)
T: 1961.000 Epoch of periastron passage (year)
e: 0.18 Eccentricity
ω: 68.0 Longitude of periastron (degrees)
Start-Year: 1910.0 Year
End-Year: 2140.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A980AB
Position: 032823.56+601520.6 Epoch-2000 right ascension and declination
WDS-ID: 03284+6015 WDS designation
Discoverer Code: A980AB Discover designation and components
ADS number: 2538 Aitken Double Star catalog
HD number: 21203 HD catalog number
Hipparcos number: 16177 Hipparcos catalog number
V1: 6.73 Magnitude of the primary
V2: 8.29 Magnitude of the secondary
Equinox: 1950 Equinox
Date: 1988 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A980AB



WDS 6th Orbit including measures of A980AB

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


Ephemeris of A980AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.401    322.9
-------------------------
1910.0     0.350    171.1
1911.0     0.351    169.8
1912.0     0.352    168.6
1913.0     0.352    167.4
1914.0     0.353    166.2
1915.0     0.353    164.9
1916.0     0.354    163.7
1917.0     0.354    162.5
1918.0     0.354    161.3
1919.0     0.354    160.1
1920.0     0.354    158.9
1921.0     0.353    157.6
1922.0     0.353    156.4
1923.0     0.352    155.2
1924.0     0.351    154.0
1925.0     0.350    152.7
1926.0     0.349    151.5
1927.0     0.348    150.2
1928.0     0.346    149.0
1929.0     0.344    147.7
1930.0     0.343    146.4
1931.0     0.341    145.1
1932.0     0.338    143.8
1933.0     0.336    142.4
1934.0     0.334    141.1
1935.0     0.331    139.7
1936.0     0.328    138.3
1937.0     0.325    136.9
1938.0     0.322    135.4
1939.0     0.319    133.9
1940.0     0.315    132.4
1941.0     0.311    130.9
1942.0     0.308    129.3
1943.0     0.304    127.7
1944.0     0.300    126.0
1945.0     0.296    124.3
1946.0     0.292    122.5
1947.0     0.287    120.7
1948.0     0.283    118.8
1949.0     0.279    116.9
1950.0     0.274    114.9
1951.0     0.270    112.9
1952.0     0.265    110.7
1953.0     0.261    108.5
1954.0     0.257    106.3
1955.0     0.253    103.9
1956.0     0.248    101.5
1957.0     0.244     99.0
1958.0     0.241     96.4
1959.0     0.237     93.7
1960.0     0.233     91.0
1961.0     0.230     88.2
1962.0     0.227     85.3
1963.0     0.225     82.3
1964.0     0.222     79.2
1965.0     0.220     76.1
1966.0     0.219     73.0
1967.0     0.218     69.8
1968.0     0.217     66.5
1969.0     0.216     63.3
1970.0     0.216     60.0
1971.0     0.217     56.8
1972.0     0.217     53.6
1973.0     0.219     50.4
1974.0     0.220     47.2
1975.0     0.222     44.1
1976.0     0.225     41.1
1977.0     0.227     38.1
1978.0     0.230     35.2
1979.0     0.234     32.3
1980.0     0.237     29.6
1981.0     0.241     26.9
1982.0     0.245     24.4
1983.0     0.249     21.9
1984.0     0.254     19.5
1985.0     0.258     17.1
1986.0     0.263     14.9
1987.0     0.268     12.7
1988.0     0.273     10.7
1989.0     0.277      8.7
1990.0     0.282      6.7
1991.0     0.287      4.8
1992.0     0.292      3.0
1993.0     0.297      1.3
1994.0     0.302    359.6
1995.0     0.307    357.9
1996.0     0.312    356.4
1997.0     0.317    354.8
1998.0     0.321    353.3
1999.0     0.326    351.9
2000.0     0.331    350.5
2001.0     0.335    349.1
2002.0     0.339    347.8
2003.0     0.343    346.5
2004.0     0.348    345.2
2005.0     0.352    343.9
2006.0     0.355    342.7
2007.0     0.359    341.5
2008.0     0.363    340.4
2009.0     0.366    339.2
2010.0     0.369    338.1
2011.0     0.373    337.0
2012.0     0.376    335.9
2013.0     0.378    334.8
2014.0     0.381    333.8
2015.0     0.384    332.7
2016.0     0.386    331.7
2017.0     0.388    330.7
2018.0     0.390    329.7
2019.0     0.392    328.7
2020.0     0.394    327.7
2021.0     0.396    326.7
2022.0     0.397    325.8
2023.0     0.399    324.8
2024.0     0.400    323.9
2025.0     0.401    322.9
2026.0     0.402    322.0
2027.0     0.403    321.0
2028.0     0.404    320.1
2029.0     0.404    319.2
2030.0     0.405    318.2
2031.0     0.405    317.3
2032.0     0.405    316.4
2033.0     0.405    315.4
2034.0     0.405    314.5
2035.0     0.405    313.6
2036.0     0.405    312.7
2037.0     0.404    311.7
2038.0     0.404    310.8
2039.0     0.403    309.9
2040.0     0.402    308.9
2041.0     0.401    308.0
2042.0     0.400    307.0
2043.0     0.399    306.1
2044.0     0.398    305.1
2045.0     0.397    304.2
2046.0     0.395    303.2
2047.0     0.394    302.2
2048.0     0.392    301.2
2049.0     0.391    300.2
2050.0     0.389    299.2
2051.0     0.387    298.2
2052.0     0.386    297.2
2053.0     0.384    296.2
2054.0     0.382    295.2
2055.0     0.380    294.1
2056.0     0.378    293.0
2057.0     0.376    292.0
2058.0     0.374    290.9
2059.0     0.371    289.8
2060.0     0.369    288.7
2061.0     0.367    287.6
2062.0     0.365    286.4
2063.0     0.362    285.3
2064.0     0.360    284.1
2065.0     0.358    282.9
2066.0     0.355    281.7
2067.0     0.353    280.5
2068.0     0.351    279.3
2069.0     0.348    278.0
2070.0     0.346    276.8
2071.0     0.344    275.5
2072.0     0.341    274.2
2073.0     0.339    272.9
2074.0     0.337    271.6
2075.0     0.335    270.2
2076.0     0.332    268.8
2077.0     0.330    267.5
2078.0     0.328    266.1
2079.0     0.326    264.6
2080.0     0.324    263.2
2081.0     0.322    261.7
2082.0     0.320    260.3
2083.0     0.319    258.8
2084.0     0.317    257.3
2085.0     0.315    255.8
2086.0     0.314    254.2
2087.0     0.312    252.7
2088.0     0.311    251.1
2089.0     0.310    249.5
2090.0     0.308    247.9
2091.0     0.307    246.3
2092.0     0.306    244.7
2093.0     0.305    243.1
2094.0     0.305    241.4
2095.0     0.304    239.8
2096.0     0.303    238.1
2097.0     0.303    236.5
2098.0     0.303    234.8
2099.0     0.302    233.2
2100.0     0.302    231.5
2101.0     0.302    229.8
2102.0     0.302    228.2
2103.0     0.302    226.5
2104.0     0.303    224.9
2105.0     0.303    223.2
2106.0     0.304    221.5
2107.0     0.304    219.9
2108.0     0.305    218.3
2109.0     0.306    216.6
2110.0     0.307    215.0
2111.0     0.308    213.4
2112.0     0.309    211.8
2113.0     0.310    210.2
2114.0     0.311    208.6
2115.0     0.312    207.1
2116.0     0.314    205.5
2117.0     0.315    204.0
2118.0     0.316    202.4
2119.0     0.318    200.9
2120.0     0.320    199.4
2121.0     0.321    197.9
2122.0     0.323    196.5
2123.0     0.324    195.0
2124.0     0.326    193.6
2125.0     0.328    192.2
2126.0     0.329    190.8
2127.0     0.331    189.4
2128.0     0.333    188.0
2129.0     0.334    186.6
2130.0     0.336    185.2
2131.0     0.337    183.9
2132.0     0.339    182.6
2133.0     0.340    181.3
2134.0     0.342    179.9
2135.0     0.343    178.7
2136.0     0.345    177.4
2137.0     0.346    176.1
2138.0     0.347    174.8
2139.0     0.348    173.6






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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