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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:27:30

Orbital Elements for A2102
WDS: A2102 WDS ID/Discoverer
P: 162.000 Orbital period (years)
a: 0.607 Semi-major axis (arcseconds)
i: 101.7 Inclination (degrees)
Ω: 151.2 Longitude of ascending node (degrees)
T: 2101.000 Epoch of periastron passage (year)
e: 0.447 Eccentricity
ω: 262.8 Longitude of periastron (degrees)
Start-Year: 1944.0 Year
End-Year: 2106.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2102
Position: 011546.78+094705.3 Epoch-2000 right ascension and declination
WDS-ID: 01158+0947 WDS designation
Discoverer Code: A2102 Discover designation and components
ADS number: 1016 Aitken Double Star catalog
HD number: 7564 HD catalog number
Hipparcos number: 5898 Hipparcos catalog number
V1: 7.36 Magnitude of the primary
V2: 9.89 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A2102



WDS 6th Orbit including measures of A2102

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


Ephemeris of A2102
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.181     73.1
-------------------------
1944.0     0.159    175.4
1945.0     0.190    170.5
1946.0     0.222    167.0
1947.0     0.252    164.3
1948.0     0.282    162.2
1949.0     0.310    160.5
1950.0     0.336    159.1
1951.0     0.361    157.9
1952.0     0.384    156.8
1953.0     0.406    155.9
1954.0     0.427    155.0
1955.0     0.445    154.2
1956.0     0.463    153.5
1957.0     0.478    152.8
1958.0     0.493    152.2
1959.0     0.506    151.6
1960.0     0.518    151.0
1961.0     0.529    150.5
1962.0     0.538    150.0
1963.0     0.547    149.5
1964.0     0.554    149.0
1965.0     0.561    148.5
1966.0     0.566    148.0
1967.0     0.571    147.6
1968.0     0.574    147.1
1969.0     0.577    146.7
1970.0     0.579    146.2
1971.0     0.580    145.8
1972.0     0.581    145.3
1973.0     0.581    144.9
1974.0     0.580    144.5
1975.0     0.579    144.0
1976.0     0.577    143.6
1977.0     0.574    143.1
1978.0     0.571    142.7
1979.0     0.568    142.2
1980.0     0.564    141.8
1981.0     0.559    141.3
1982.0     0.554    140.8
1983.0     0.549    140.3
1984.0     0.543    139.8
1985.0     0.536    139.3
1986.0     0.530    138.8
1987.0     0.523    138.2
1988.0     0.516    137.7
1989.0     0.508    137.1
1990.0     0.500    136.5
1991.0     0.492    135.9
1992.0     0.483    135.3
1993.0     0.475    134.7
1994.0     0.466    134.0
1995.0     0.456    133.3
1996.0     0.447    132.6
1997.0     0.437    131.8
1998.0     0.427    131.0
1999.0     0.418    130.2
2000.0     0.407    129.3
2001.0     0.397    128.4
2002.0     0.387    127.4
2003.0     0.376    126.4
2004.0     0.366    125.3
2005.0     0.355    124.2
2006.0     0.345    123.0
2007.0     0.334    121.7
2008.0     0.323    120.3
2009.0     0.313    118.8
2010.0     0.302    117.3
2011.0     0.292    115.6
2012.0     0.281    113.8
2013.0     0.271    111.8
2014.0     0.261    109.7
2015.0     0.251    107.4
2016.0     0.242    105.0
2017.0     0.233    102.4
2018.0     0.224     99.5
2019.0     0.216     96.4
2020.0     0.208     93.1
2021.0     0.201     89.6
2022.0     0.195     85.8
2023.0     0.189     81.8
2024.0     0.185     77.5
2025.0     0.181     73.1
2026.0     0.179     68.5
2027.0     0.177     63.8
2028.0     0.177     59.1
2029.0     0.178     54.3
2030.0     0.180     49.7
2031.0     0.183     45.2
2032.0     0.186     40.8
2033.0     0.191     36.6
2034.0     0.197     32.7
2035.0     0.204     29.0
2036.0     0.211     25.5
2037.0     0.219     22.3
2038.0     0.227     19.3
2039.0     0.236     16.5
2040.0     0.245     13.9
2041.0     0.254     11.6
2042.0     0.264      9.3
2043.0     0.274      7.3
2044.0     0.284      5.4
2045.0     0.294      3.6
2046.0     0.305      2.0
2047.0     0.315      0.4
2048.0     0.325    359.0
2049.0     0.336    357.6
2050.0     0.346    356.3
2051.0     0.356    355.1
2052.0     0.366    354.0
2053.0     0.376    352.9
2054.0     0.386    351.9
2055.0     0.396    350.9
2056.0     0.406    350.0
2057.0     0.415    349.1
2058.0     0.424    348.3
2059.0     0.433    347.5
2060.0     0.441    346.7
2061.0     0.449    345.9
2062.0     0.457    345.2
2063.0     0.464    344.5
2064.0     0.471    343.8
2065.0     0.478    343.2
2066.0     0.484    342.5
2067.0     0.490    341.9
2068.0     0.495    341.3
2069.0     0.499    340.7
2070.0     0.503    340.1
2071.0     0.507    339.5
2072.0     0.509    338.9
2073.0     0.511    338.4
2074.0     0.512    337.8
2075.0     0.513    337.2
2076.0     0.512    336.7
2077.0     0.511    336.1
2078.0     0.509    335.5
2079.0     0.505    334.9
2080.0     0.501    334.4
2081.0     0.495    333.8
2082.0     0.488    333.1
2083.0     0.480    332.5
2084.0     0.470    331.9
2085.0     0.459    331.2
2086.0     0.447    330.4
2087.0     0.433    329.7
2088.0     0.417    328.9
2089.0     0.399    328.0
2090.0     0.380    327.0
2091.0     0.359    325.9
2092.0     0.336    324.7
2093.0     0.311    323.3
2094.0     0.285    321.6
2095.0     0.256    319.5
2096.0     0.227    317.0
2097.0     0.196    313.7
2098.0     0.164    309.0
2099.0     0.133    302.2
2100.0     0.104    291.4
2101.0     0.080    273.1
2102.0     0.068    244.7
2103.0     0.076    214.9
2104.0     0.098    194.7
2105.0     0.127    182.8



 

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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