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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:57:44

Orbital Elements for STF518BC
WDS: STF518BC WDS ID/Discoverer
P: 233.200 Orbital period (years)
a: 6.88788 Semi-major axis (arcseconds)
i: 107.98 Inclination (degrees)
Ω: 151.58 Longitude of ascending node (degrees)
T: 1848.789 Epoch of periastron passage (year)
e: 0.4141 Eccentricity
ω: 321.2 Longitude of periastron (degrees)
Start-Year: 1909.0 Year
End-Year: 2141.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF518BC
Position: 041521.79-073929.1 Epoch-2000 right ascension and declination
WDS-ID: 04153-0739 WDS designation
Discoverer Code: STF518BC Discover designation and components
ADS number: 3093 Aitken Double Star catalog
HD number: 26976 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.02 Magnitude of the primary
V2: 11.47 Magnitude of the secondary
Equinox: Equinox
Date: 2019 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF518BC



WDS 6th Orbit including measures of STF518BC

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


Ephemeris of STF518BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     7.776    328.6
-------------------------
1909.0     2.628     42.1
1910.0     2.694     39.2
1911.0     2.765     36.4
1912.0     2.841     33.8
1913.0     2.921     31.3
1914.0     3.005     28.9
1915.0     3.093     26.7
1916.0     3.184     24.6
1917.0     3.278     22.7
1918.0     3.374     20.8
1919.0     3.472     19.0
1920.0     3.572     17.4
1921.0     3.674     15.8
1922.0     3.777     14.3
1923.0     3.881     12.9
1924.0     3.985     11.6
1925.0     4.091     10.3
1926.0     4.197      9.1
1927.0     4.303      8.0
1928.0     4.410      6.9
1929.0     4.516      5.9
1930.0     4.623      4.9
1931.0     4.729      4.0
1932.0     4.835      3.1
1933.0     4.941      2.2
1934.0     5.046      1.4
1935.0     5.151      0.6
1936.0     5.255    359.8
1937.0     5.359    359.1
1938.0     5.462    358.4
1939.0     5.564    357.7
1940.0     5.665    357.1
1941.0     5.765    356.4
1942.0     5.864    355.8
1943.0     5.963    355.2
1944.0     6.060    354.7
1945.0     6.156    354.1
1946.0     6.251    353.6
1947.0     6.345    353.1
1948.0     6.438    352.6
1949.0     6.529    352.1
1950.0     6.619    351.6
1951.0     6.708    351.1
1952.0     6.795    350.7
1953.0     6.881    350.2
1954.0     6.966    349.8
1955.0     7.049    349.4
1956.0     7.131    349.0
1957.0     7.211    348.6
1958.0     7.290    348.2
1959.0     7.367    347.8
1960.0     7.442    347.4
1961.0     7.516    347.1
1962.0     7.589    346.7
1963.0     7.659    346.3
1964.0     7.728    346.0
1965.0     7.795    345.6
1966.0     7.861    345.3
1967.0     7.925    345.0
1968.0     7.987    344.7
1969.0     8.047    344.3
1970.0     8.105    344.0
1971.0     8.162    343.7
1972.0     8.217    343.4
1973.0     8.269    343.1
1974.0     8.320    342.8
1975.0     8.369    342.5
1976.0     8.416    342.2
1977.0     8.461    341.9
1978.0     8.504    341.6
1979.0     8.545    341.4
1980.0     8.584    341.1
1981.0     8.621    340.8
1982.0     8.655    340.5
1983.0     8.688    340.2
1984.0     8.718    340.0
1985.0     8.747    339.7
1986.0     8.773    339.4
1987.0     8.797    339.2
1988.0     8.818    338.9
1989.0     8.838    338.6
1990.0     8.855    338.4
1991.0     8.869    338.1
1992.0     8.882    337.9
1993.0     8.892    337.6
1994.0     8.899    337.3
1995.0     8.904    337.1
1996.0     8.907    336.8
1997.0     8.907    336.6
1998.0     8.905    336.3
1999.0     8.900    336.0
2000.0     8.893    335.8
2001.0     8.883    335.5
2002.0     8.870    335.3
2003.0     8.855    335.0
2004.0     8.837    334.7
2005.0     8.816    334.5
2006.0     8.793    334.2
2007.0     8.766    333.9
2008.0     8.737    333.7
2009.0     8.705    333.4
2010.0     8.670    333.1
2011.0     8.633    332.8
2012.0     8.592    332.6
2013.0     8.548    332.3
2014.0     8.502    332.0
2015.0     8.452    331.7
2016.0     8.399    331.4
2017.0     8.343    331.1
2018.0     8.283    330.8
2019.0     8.221    330.5
2020.0     8.155    330.2
2021.0     8.086    329.9
2022.0     8.014    329.6
2023.0     7.938    329.3
2024.0     7.859    328.9
2025.0     7.776    328.6
2026.0     7.690    328.3
2027.0     7.600    327.9
2028.0     7.507    327.6
2029.0     7.410    327.2
2030.0     7.310    326.8
2031.0     7.205    326.4
2032.0     7.097    326.0
2033.0     6.985    325.6
2034.0     6.870    325.2
2035.0     6.750    324.7
2036.0     6.627    324.3
2037.0     6.500    323.8
2038.0     6.369    323.3
2039.0     6.233    322.8
2040.0     6.094    322.2
2041.0     5.951    321.7
2042.0     5.804    321.1
2043.0     5.653    320.4
2044.0     5.498    319.8
2045.0     5.338    319.1
2046.0     5.175    318.3
2047.0     5.008    317.5
2048.0     4.838    316.7
2049.0     4.663    315.8
2050.0     4.485    314.8
2051.0     4.303    313.7
2052.0     4.118    312.6
2053.0     3.930    311.3
2054.0     3.739    309.9
2055.0     3.546    308.3
2056.0     3.351    306.6
2057.0     3.155    304.7
2058.0     2.958    302.5
2059.0     2.761    299.9
2060.0     2.566    297.0
2061.0     2.374    293.7
2062.0     2.188    289.7
2063.0     2.010    285.0
2064.0     1.843    279.4
2065.0     1.694    272.8
2066.0     1.568    265.1
2067.0     1.471    256.1
2068.0     1.412    246.2
2069.0     1.394    235.7
2070.0     1.420    225.2
2071.0     1.487    215.4
2072.0     1.589    206.7
2073.0     1.718    199.1
2074.0     1.868    192.7
2075.0     2.031    187.3
2076.0     2.204    182.7
2077.0     2.381    178.7
2078.0     2.559    175.4
2079.0     2.737    172.4
2080.0     2.911    169.9
2081.0     3.080    167.6
2082.0     3.242    165.5
2083.0     3.397    163.6
2084.0     3.542    161.9
2085.0     3.678    160.3
2086.0     3.803    158.9
2087.0     3.918    157.5
2088.0     4.021    156.2
2089.0     4.113    154.9
2090.0     4.193    153.7
2091.0     4.262    152.6
2092.0     4.319    151.5
2093.0     4.366    150.4
2094.0     4.401    149.3
2095.0     4.426    148.3
2096.0     4.441    147.2
2097.0     4.447    146.2
2098.0     4.443    145.1
2099.0     4.430    144.1
2100.0     4.410    143.0
2101.0     4.382    142.0
2102.0     4.346    140.9
2103.0     4.304    139.8
2104.0     4.256    138.7
2105.0     4.202    137.5
2106.0     4.143    136.3
2107.0     4.079    135.1
2108.0     4.012    133.9
2109.0     3.940    132.6
2110.0     3.865    131.2
2111.0     3.788    129.8
2112.0     3.708    128.3
2113.0     3.626    126.8
2114.0     3.542    125.2
2115.0     3.458    123.5
2116.0     3.373    121.8
2117.0     3.288    119.9
2118.0     3.204    118.0
2119.0     3.121    115.9
2120.0     3.039    113.7
2121.0     2.959    111.4
2122.0     2.881    109.0
2123.0     2.807    106.5
2124.0     2.736    103.8
2125.0     2.669    101.0
2126.0     2.608     98.0
2127.0     2.551     94.9
2128.0     2.501     91.7
2129.0     2.458     88.3
2130.0     2.421     84.9
2131.0     2.392     81.3
2132.0     2.371     77.7
2133.0     2.359     74.0
2134.0     2.355     70.3
2135.0     2.359     66.6
2136.0     2.372     62.9
2137.0     2.393     59.3
2138.0     2.423     55.7
2139.0     2.460     52.3
2140.0     2.505     49.0






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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