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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:16:51

Orbital Elements for STT118AB
WDS: STT118AB WDS ID/Discoverer
P: 231.500 Orbital period (years)
a: 0.365 Semi-major axis (arcseconds)
i: 91.2 Inclination (degrees)
Ω: 137.9 Longitude of ascending node (degrees)
T: 2003.000 Epoch of periastron passage (year)
e: 0.834 Eccentricity
ω: 351.2 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 STT118AB
Position: 054822.36+205210.3 Epoch-2000 right ascension and declination
WDS-ID: 05484+2052 WDS designation
Discoverer Code: STT118AB Discover designation and components
ADS number: 4392 Aitken Double Star catalog
HD number: 38670 HD catalog number
Hipparcos number: 27421 Hipparcos catalog number
V1: 6.32 Magnitude of the primary
V2: 7.57 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2016 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT118AB



WDS 6th Orbit including measures of STT118AB

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


Ephemeris of STT118AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.217    319.2
-------------------------
1910.0     0.651    318.0
1911.0     0.650    318.0
1912.0     0.648    317.9
1913.0     0.647    317.9
1914.0     0.645    317.9
1915.0     0.643    317.9
1916.0     0.641    317.9
1917.0     0.639    317.9
1918.0     0.637    317.9
1919.0     0.635    317.9
1920.0     0.633    317.9
1921.0     0.631    317.9
1922.0     0.628    317.9
1923.0     0.626    317.9
1924.0     0.623    317.9
1925.0     0.621    317.9
1926.0     0.618    317.9
1927.0     0.615    317.9
1928.0     0.612    317.9
1929.0     0.609    317.8
1930.0     0.606    317.8
1931.0     0.603    317.8
1932.0     0.599    317.8
1933.0     0.596    317.8
1934.0     0.592    317.8
1935.0     0.589    317.8
1936.0     0.585    317.8
1937.0     0.581    317.8
1938.0     0.577    317.8
1939.0     0.573    317.8
1940.0     0.569    317.8
1941.0     0.565    317.8
1942.0     0.561    317.8
1943.0     0.556    317.7
1944.0     0.551    317.7
1945.0     0.547    317.7
1946.0     0.542    317.7
1947.0     0.537    317.7
1948.0     0.532    317.7
1949.0     0.527    317.7
1950.0     0.521    317.7
1951.0     0.516    317.7
1952.0     0.510    317.7
1953.0     0.505    317.7
1954.0     0.499    317.7
1955.0     0.493    317.6
1956.0     0.487    317.6
1957.0     0.481    317.6
1958.0     0.474    317.6
1959.0     0.468    317.6
1960.0     0.461    317.6
1961.0     0.454    317.6
1962.0     0.447    317.6
1963.0     0.440    317.6
1964.0     0.433    317.5
1965.0     0.425    317.5
1966.0     0.418    317.5
1967.0     0.410    317.5
1968.0     0.402    317.5
1969.0     0.393    317.5
1970.0     0.385    317.5
1971.0     0.376    317.4
1972.0     0.368    317.4
1973.0     0.359    317.4
1974.0     0.349    317.4
1975.0     0.340    317.4
1976.0     0.330    317.3
1977.0     0.320    317.3
1978.0     0.310    317.3
1979.0     0.300    317.3
1980.0     0.289    317.2
1981.0     0.278    317.2
1982.0     0.266    317.2
1983.0     0.255    317.1
1984.0     0.243    317.1
1985.0     0.230    317.1
1986.0     0.218    317.0
1987.0     0.205    317.0
1988.0     0.191    316.9
1989.0     0.177    316.8
1990.0     0.163    316.7
1991.0     0.148    316.6
1992.0     0.132    316.5
1993.0     0.116    316.4
1994.0     0.099    316.2
1995.0     0.082    315.9
1996.0     0.064    315.4
1997.0     0.045    314.6
1998.0     0.025    312.5
1999.0     0.006    296.0
2000.0     0.015    144.9
2001.0     0.034    140.2
2002.0     0.050    138.9
2003.0     0.060    138.1
2004.0     0.060    137.4
2005.0     0.053    136.7
2006.0     0.040    135.6
2007.0     0.026    133.3
2008.0     0.011    124.7
2009.0     0.006    346.1
2010.0     0.021    326.2
2011.0     0.036    323.1
2012.0     0.051    321.8
2013.0     0.066    321.1
2014.0     0.080    320.7
2015.0     0.094    320.3
2016.0     0.108    320.1
2017.0     0.121    319.9
2018.0     0.134    319.8
2019.0     0.147    319.6
2020.0     0.159    319.5
2021.0     0.171    319.5
2022.0     0.183    319.4
2023.0     0.195    319.3
2024.0     0.206    319.3
2025.0     0.217    319.2
2026.0     0.228    319.2
2027.0     0.238    319.1
2028.0     0.249    319.1
2029.0     0.259    319.0
2030.0     0.269    319.0
2031.0     0.278    319.0
2032.0     0.288    318.9
2033.0     0.297    318.9
2034.0     0.306    318.9
2035.0     0.315    318.9
2036.0     0.324    318.8
2037.0     0.333    318.8
2038.0     0.341    318.8
2039.0     0.350    318.8
2040.0     0.358    318.7
2041.0     0.366    318.7
2042.0     0.374    318.7
2043.0     0.381    318.7
2044.0     0.389    318.7
2045.0     0.396    318.7
2046.0     0.404    318.7
2047.0     0.411    318.6
2048.0     0.418    318.6
2049.0     0.425    318.6
2050.0     0.431    318.6
2051.0     0.438    318.6
2052.0     0.445    318.6
2053.0     0.451    318.6
2054.0     0.457    318.5
2055.0     0.463    318.5
2056.0     0.470    318.5
2057.0     0.475    318.5
2058.0     0.481    318.5
2059.0     0.487    318.5
2060.0     0.493    318.5
2061.0     0.498    318.5
2062.0     0.504    318.5
2063.0     0.509    318.5
2064.0     0.514    318.4
2065.0     0.519    318.4
2066.0     0.524    318.4
2067.0     0.529    318.4
2068.0     0.534    318.4
2069.0     0.538    318.4
2070.0     0.543    318.4
2071.0     0.547    318.4
2072.0     0.552    318.4
2073.0     0.556    318.4
2074.0     0.560    318.4
2075.0     0.565    318.4
2076.0     0.569    318.3
2077.0     0.572    318.3
2078.0     0.576    318.3
2079.0     0.580    318.3
2080.0     0.584    318.3
2081.0     0.587    318.3
2082.0     0.591    318.3
2083.0     0.594    318.3
2084.0     0.598    318.3
2085.0     0.601    318.3
2086.0     0.604    318.3
2087.0     0.607    318.3
2088.0     0.610    318.3
2089.0     0.613    318.3
2090.0     0.616    318.3
2091.0     0.618    318.2
2092.0     0.621    318.2
2093.0     0.624    318.2
2094.0     0.626    318.2
2095.0     0.628    318.2
2096.0     0.631    318.2
2097.0     0.633    318.2
2098.0     0.635    318.2
2099.0     0.637    318.2
2100.0     0.639    318.2
2101.0     0.641    318.2
2102.0     0.643    318.2
2103.0     0.645    318.2
2104.0     0.646    318.2
2105.0     0.648    318.2
2106.0     0.649    318.2
2107.0     0.651    318.2
2108.0     0.652    318.1
2109.0     0.653    318.1
2110.0     0.655    318.1
2111.0     0.656    318.1
2112.0     0.657    318.1
2113.0     0.658    318.1
2114.0     0.658    318.1
2115.0     0.659    318.1
2116.0     0.660    318.1
2117.0     0.661    318.1
2118.0     0.661    318.1
2119.0     0.662    318.1
2120.0     0.662    318.1
2121.0     0.662    318.1
2122.0     0.663    318.1
2123.0     0.663    318.1
2124.0     0.663    318.1
2125.0     0.663    318.1
2126.0     0.663    318.0
2127.0     0.663    318.0
2128.0     0.662    318.0
2129.0     0.662    318.0
2130.0     0.662    318.0
2131.0     0.661    318.0
2132.0     0.661    318.0
2133.0     0.660    318.0
2134.0     0.659    318.0
2135.0     0.658    318.0
2136.0     0.658    318.0
2137.0     0.657    318.0
2138.0     0.656    318.0
2139.0     0.654    318.0






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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