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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 18:34:09

Orbital Elements for I974AA,AB
WDS: I974AA,AB WDS ID/Discoverer
P: 210.700 Orbital period (years)
a: 0.435 Semi-major axis (arcseconds)
i: 79.8 Inclination (degrees)
Ω: 5.2 Longitude of ascending node (degrees)
T: 1980.000 Epoch of periastron passage (year)
e: 0.73 Eccentricity
ω: 199.1 Longitude of periastron (degrees)
Start-Year: 1920.0 Year
End-Year: 2130.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I974AA,AB
Position: 154650.97-580730.5 Epoch-2000 right ascension and declination
WDS-ID: 15468-5808 WDS designation
Discoverer Code: I974AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 140504 HD catalog number
Hipparcos number: 77294 Hipparcos catalog number
V1: 7.42 Magnitude of the primary
V2: 7.93 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for I974AA,AB



WDS 6th Orbit including measures of I974AA,AB

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


Ephemeris of I974AA,AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.561      3.6
-------------------------
1920.0     0.515     13.2
1921.0     0.508     13.4
1922.0     0.500     13.5
1923.0     0.493     13.7
1924.0     0.485     13.9
1925.0     0.477     14.0
1926.0     0.469     14.2
1927.0     0.461     14.4
1928.0     0.453     14.6
1929.0     0.445     14.8
1930.0     0.436     15.0
1931.0     0.428     15.2
1932.0     0.419     15.4
1933.0     0.410     15.6
1934.0     0.401     15.9
1935.0     0.392     16.1
1936.0     0.382     16.4
1937.0     0.373     16.6
1938.0     0.363     16.9
1939.0     0.353     17.2
1940.0     0.343     17.6
1941.0     0.333     17.9
1942.0     0.323     18.3
1943.0     0.312     18.7
1944.0     0.302     19.1
1945.0     0.291     19.5
1946.0     0.280     20.0
1947.0     0.269     20.5
1948.0     0.258     21.1
1949.0     0.247     21.7
1950.0     0.235     22.4
1951.0     0.223     23.1
1952.0     0.212     23.9
1953.0     0.200     24.9
1954.0     0.188     25.9
1955.0     0.175     27.1
1956.0     0.163     28.5
1957.0     0.151     30.1
1958.0     0.138     31.9
1959.0     0.126     34.2
1960.0     0.113     37.0
1961.0     0.101     40.4
1962.0     0.089     44.7
1963.0     0.077     50.4
1964.0     0.067     58.1
1965.0     0.057     68.3
1966.0     0.050     82.0
1967.0     0.047     98.8
1968.0     0.048    116.6
1969.0     0.052    132.5
1970.0     0.060    145.0
1971.0     0.070    154.4
1972.0     0.080    161.4
1973.0     0.090    166.8
1974.0     0.100    171.1
1975.0     0.109    174.7
1976.0     0.117    177.7
1977.0     0.121    180.5
1978.0     0.122    183.1
1979.0     0.119    185.8
1980.0     0.111    188.7
1981.0     0.099    192.3
1982.0     0.082    197.1
1983.0     0.064    204.5
1984.0     0.045    218.1
1985.0     0.031    247.0
1986.0     0.031    291.5
1987.0     0.045    320.5
1988.0     0.064    334.0
1989.0     0.085    341.2
1990.0     0.106    345.5
1991.0     0.126    348.5
1992.0     0.146    350.6
1993.0     0.165    352.2
1994.0     0.184    353.5
1995.0     0.202    354.6
1996.0     0.220    355.4
1997.0     0.237    356.2
1998.0     0.254    356.8
1999.0     0.270    357.4
2000.0     0.286    357.9
2001.0     0.301    358.4
2002.0     0.316    358.8
2003.0     0.330    359.2
2004.0     0.344    359.5
2005.0     0.358    359.8
2006.0     0.371      0.1
2007.0     0.384      0.4
2008.0     0.396      0.6
2009.0     0.408      0.9
2010.0     0.420      1.1
2011.0     0.431      1.3
2012.0     0.442      1.5
2013.0     0.453      1.7
2014.0     0.464      1.9
2015.0     0.474      2.1
2016.0     0.484      2.3
2017.0     0.493      2.4
2018.0     0.503      2.6
2019.0     0.512      2.7
2020.0     0.521      2.9
2021.0     0.529      3.0
2022.0     0.538      3.2
2023.0     0.546      3.3
2024.0     0.554      3.4
2025.0     0.561      3.6
2026.0     0.569      3.7
2027.0     0.576      3.8
2028.0     0.583      3.9
2029.0     0.590      4.0
2030.0     0.596      4.1
2031.0     0.603      4.2
2032.0     0.609      4.3
2033.0     0.615      4.5
2034.0     0.621      4.6
2035.0     0.626      4.7
2036.0     0.632      4.8
2037.0     0.637      4.9
2038.0     0.642      4.9
2039.0     0.647      5.0
2040.0     0.652      5.1
2041.0     0.656      5.2
2042.0     0.661      5.3
2043.0     0.665      5.4
2044.0     0.669      5.5
2045.0     0.673      5.6
2046.0     0.677      5.7
2047.0     0.680      5.8
2048.0     0.684      5.8
2049.0     0.687      5.9
2050.0     0.690      6.0
2051.0     0.693      6.1
2052.0     0.696      6.2
2053.0     0.699      6.2
2054.0     0.701      6.3
2055.0     0.704      6.4
2056.0     0.706      6.5
2057.0     0.708      6.6
2058.0     0.710      6.6
2059.0     0.712      6.7
2060.0     0.713      6.8
2061.0     0.715      6.9
2062.0     0.716      6.9
2063.0     0.718      7.0
2064.0     0.719      7.1
2065.0     0.720      7.2
2066.0     0.721      7.3
2067.0     0.721      7.3
2068.0     0.722      7.4
2069.0     0.722      7.5
2070.0     0.723      7.6
2071.0     0.723      7.6
2072.0     0.723      7.7
2073.0     0.723      7.8
2074.0     0.723      7.8
2075.0     0.723      7.9
2076.0     0.722      8.0
2077.0     0.722      8.1
2078.0     0.721      8.2
2079.0     0.720      8.2
2080.0     0.719      8.3
2081.0     0.718      8.4
2082.0     0.717      8.5
2083.0     0.716      8.5
2084.0     0.715      8.6
2085.0     0.713      8.7
2086.0     0.711      8.8
2087.0     0.710      8.8
2088.0     0.708      8.9
2089.0     0.706      9.0
2090.0     0.704      9.1
2091.0     0.701      9.2
2092.0     0.699      9.2
2093.0     0.697      9.3
2094.0     0.694      9.4
2095.0     0.691      9.5
2096.0     0.688      9.6
2097.0     0.685      9.6
2098.0     0.682      9.7
2099.0     0.679      9.8
2100.0     0.676      9.9
2101.0     0.672     10.0
2102.0     0.669     10.1
2103.0     0.665     10.2
2104.0     0.661     10.2
2105.0     0.657     10.3
2106.0     0.653     10.4
2107.0     0.649     10.5
2108.0     0.645     10.6
2109.0     0.641     10.7
2110.0     0.636     10.8
2111.0     0.631     10.9
2112.0     0.627     11.0
2113.0     0.622     11.1
2114.0     0.617     11.2
2115.0     0.612     11.3
2116.0     0.606     11.4
2117.0     0.601     11.5
2118.0     0.596     11.6
2119.0     0.590     11.7
2120.0     0.584     11.8
2121.0     0.578     12.0
2122.0     0.572     12.1
2123.0     0.566     12.2
2124.0     0.560     12.3
2125.0     0.554     12.5
2126.0     0.547     12.6
2127.0     0.540     12.7
2128.0     0.534     12.9
2129.0     0.527     13.0



 

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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