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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:21:48

Orbital Elements for A2289AB
WDS: A2289AB WDS ID/Discoverer
P: 159.450 Orbital period (years)
a: 0.207 Semi-major axis (arcseconds)
i: 111.0 Inclination (degrees)
Ω: 141.1 Longitude of ascending node (degrees)
T: 2008.150 Epoch of periastron passage (year)
e: 0.652 Eccentricity
ω: 51.1 Longitude of periastron (degrees)
Start-Year: 1946.0 Year
End-Year: 2104.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2289AB
Position: 212530.78+020235.0 Epoch-2000 right ascension and declination
WDS-ID: 21255+0203 WDS designation
Discoverer Code: A2289AB Discover designation and components
ADS number: 14960 Aitken Double Star catalog
HD number: 203993 HD catalog number
Hipparcos number: 105792 Hipparcos catalog number
V1: 7.82 Magnitude of the primary
V2: 9.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A2289AB



WDS 6th Orbit including measures of A2289AB

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


Ephemeris of A2289AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.167    325.3
-------------------------
1946.0     0.185    286.7
1947.0     0.182    285.9
1948.0     0.179    285.1
1949.0     0.176    284.3
1950.0     0.172    283.4
1951.0     0.169    282.5
1952.0     0.165    281.5
1953.0     0.162    280.6
1954.0     0.158    279.5
1955.0     0.155    278.5
1956.0     0.151    277.3
1957.0     0.148    276.2
1958.0     0.144    274.9
1959.0     0.141    273.7
1960.0     0.138    272.3
1961.0     0.134    270.9
1962.0     0.131    269.4
1963.0     0.127    267.8
1964.0     0.124    266.1
1965.0     0.120    264.3
1966.0     0.117    262.5
1967.0     0.114    260.5
1968.0     0.111    258.4
1969.0     0.108    256.2
1970.0     0.105    253.9
1971.0     0.102    251.4
1972.0     0.099    248.8
1973.0     0.096    246.0
1974.0     0.094    243.1
1975.0     0.092    240.1
1976.0     0.090    236.9
1977.0     0.088    233.5
1978.0     0.086    230.1
1979.0     0.085    226.5
1980.0     0.084    222.7
1981.0     0.083    218.9
1982.0     0.082    215.1
1983.0     0.082    211.2
1984.0     0.082    207.2
1985.0     0.082    203.3
1986.0     0.083    199.4
1987.0     0.083    195.6
1988.0     0.084    191.8
1989.0     0.085    188.2
1990.0     0.087    184.6
1991.0     0.088    181.2
1992.0     0.089    177.8
1993.0     0.091    174.6
1994.0     0.092    171.4
1995.0     0.094    168.4
1996.0     0.095    165.4
1997.0     0.096    162.5
1998.0     0.096    159.7
1999.0     0.096    156.8
2000.0     0.096    154.0
2001.0     0.095    151.1
2002.0     0.093    148.1
2003.0     0.090    145.0
2004.0     0.085    141.5
2005.0     0.079    137.6
2006.0     0.071    133.0
2007.0     0.062    127.0
2008.0     0.051    118.7
2009.0     0.040    105.9
2010.0     0.031     84.8
2011.0     0.028     53.7
2012.0     0.033     24.3
2013.0     0.043      5.4
2014.0     0.055    354.2
2015.0     0.067    347.1
2016.0     0.079    342.2
2017.0     0.091    338.6
2018.0     0.103    335.8
2019.0     0.113    333.5
2020.0     0.124    331.6
2021.0     0.133    330.0
2022.0     0.142    328.6
2023.0     0.151    327.4
2024.0     0.159    326.3
2025.0     0.167    325.3
2026.0     0.174    324.4
2027.0     0.181    323.6
2028.0     0.187    322.8
2029.0     0.193    322.1
2030.0     0.199    321.4
2031.0     0.204    320.7
2032.0     0.210    320.1
2033.0     0.214    319.5
2034.0     0.219    319.0
2035.0     0.223    318.5
2036.0     0.227    317.9
2037.0     0.231    317.4
2038.0     0.235    317.0
2039.0     0.238    316.5
2040.0     0.241    316.0
2041.0     0.244    315.6
2042.0     0.247    315.1
2043.0     0.250    314.7
2044.0     0.252    314.3
2045.0     0.254    313.9
2046.0     0.256    313.5
2047.0     0.258    313.1
2048.0     0.260    312.7
2049.0     0.261    312.3
2050.0     0.263    311.9
2051.0     0.264    311.5
2052.0     0.265    311.2
2053.0     0.266    310.8
2054.0     0.267    310.4
2055.0     0.268    310.1
2056.0     0.268    309.7
2057.0     0.269    309.3
2058.0     0.269    309.0
2059.0     0.269    308.6
2060.0     0.269    308.2
2061.0     0.269    307.9
2062.0     0.269    307.5
2063.0     0.269    307.2
2064.0     0.269    306.8
2065.0     0.268    306.4
2066.0     0.268    306.1
2067.0     0.267    305.7
2068.0     0.267    305.3
2069.0     0.266    305.0
2070.0     0.265    304.6
2071.0     0.264    304.2
2072.0     0.263    303.8
2073.0     0.262    303.4
2074.0     0.260    303.1
2075.0     0.259    302.7
2076.0     0.258    302.3
2077.0     0.256    301.9
2078.0     0.255    301.5
2079.0     0.253    301.1
2080.0     0.251    300.7
2081.0     0.249    300.2
2082.0     0.247    299.8
2083.0     0.245    299.4
2084.0     0.243    298.9
2085.0     0.241    298.5
2086.0     0.239    298.0
2087.0     0.237    297.6
2088.0     0.235    297.1
2089.0     0.232    296.6
2090.0     0.230    296.1
2091.0     0.227    295.6
2092.0     0.225    295.1
2093.0     0.222    294.6
2094.0     0.220    294.0
2095.0     0.217    293.5
2096.0     0.214    292.9
2097.0     0.211    292.3
2098.0     0.208    291.7
2099.0     0.205    291.1
2100.0     0.202    290.5
2101.0     0.199    289.8
2102.0     0.196    289.2
2103.0     0.193    288.5



 

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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