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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:52:00

Orbital Elements for STF3128AB
WDS: STF3128AB WDS ID/Discoverer
P: 353.894 Orbital period (years)
a: 0.90295 Semi-major axis (arcseconds)
i: 158.548 Inclination (degrees)
Ω: 19.871 Longitude of ascending node (degrees)
T: 1946.890 Epoch of periastron passage (year)
e: 0.94042 Eccentricity
ω: 160.838 Longitude of periastron (degrees)
Start-Year: 1849.0 Year
End-Year: 2201.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF3128AB
Position: 175258.64-075510.2 Epoch-2000 right ascension and declination
WDS-ID: 17530-0755 WDS designation
Discoverer Code: STF3128AB Discover designation and components
ADS number: 10858 Aitken Double Star catalog
HD number: 162756 HD catalog number
Hipparcos number: 87533 Hipparcos catalog number
V1: 7.82 Magnitude of the primary
V2: 9.95 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF3128AB



WDS 6th Orbit including measures of STF3128AB

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


Ephemeris of STF3128AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.356     47.9
-------------------------
1849.0     1.516     30.3
1850.0     1.510     30.2
1851.0     1.504     30.1
1852.0     1.498     30.0
1853.0     1.491     29.8
1854.0     1.485     29.7
1855.0     1.478     29.6
1856.0     1.471     29.5
1857.0     1.465     29.4
1858.0     1.458     29.2
1859.0     1.451     29.1
1860.0     1.444     29.0
1861.0     1.436     28.9
1862.0     1.429     28.7
1863.0     1.422     28.6
1864.0     1.414     28.5
1865.0     1.407     28.3
1866.0     1.399     28.2
1867.0     1.391     28.1
1868.0     1.383     27.9
1869.0     1.375     27.8
1870.0     1.367     27.7
1871.0     1.359     27.5
1872.0     1.350     27.4
1873.0     1.342     27.2
1874.0     1.333     27.1
1875.0     1.324     26.9
1876.0     1.315     26.8
1877.0     1.306     26.6
1878.0     1.297     26.5
1879.0     1.288     26.3
1880.0     1.278     26.2
1881.0     1.269     26.0
1882.0     1.259     25.8
1883.0     1.249     25.7
1884.0     1.240     25.5
1885.0     1.229     25.3
1886.0     1.219     25.1
1887.0     1.209     25.0
1888.0     1.198     24.8
1889.0     1.188     24.6
1890.0     1.177     24.4
1891.0     1.166     24.2
1892.0     1.155     24.0
1893.0     1.144     23.8
1894.0     1.132     23.6
1895.0     1.120     23.4
1896.0     1.109     23.2
1897.0     1.097     23.0
1898.0     1.085     22.8
1899.0     1.072     22.5
1900.0     1.060     22.3
1901.0     1.047     22.1
1902.0     1.034     21.8
1903.0     1.021     21.6
1904.0     1.008     21.3
1905.0     0.994     21.1
1906.0     0.981     20.8
1907.0     0.967     20.5
1908.0     0.953     20.2
1909.0     0.938     19.9
1910.0     0.924     19.6
1911.0     0.909     19.3
1912.0     0.894     19.0
1913.0     0.878     18.7
1914.0     0.863     18.3
1915.0     0.847     18.0
1916.0     0.830     17.6
1917.0     0.814     17.2
1918.0     0.797     16.8
1919.0     0.780     16.4
1920.0     0.762     15.9
1921.0     0.745     15.5
1922.0     0.726     15.0
1923.0     0.708     14.5
1924.0     0.689     13.9
1925.0     0.669     13.4
1926.0     0.650     12.8
1927.0     0.629     12.1
1928.0     0.608     11.4
1929.0     0.587     10.7
1930.0     0.565      9.9
1931.0     0.543      9.1
1932.0     0.519      8.1
1933.0     0.495      7.1
1934.0     0.471      6.0
1935.0     0.445      4.7
1936.0     0.419      3.3
1937.0     0.392      1.7
1938.0     0.363    359.9
1939.0     0.333    357.7
1940.0     0.302    355.1
1941.0     0.269    351.9
1942.0     0.234    347.7
1943.0     0.197    342.0
1944.0     0.157    333.5
1945.0     0.114    318.8
1946.0     0.071    286.1
1947.0     0.054    207.8
1948.0     0.082    144.2
1949.0     0.121    117.5
1950.0     0.160    104.0
1951.0     0.197     95.7
1952.0     0.231     89.9
1953.0     0.264     85.6
1954.0     0.295     82.3
1955.0     0.325     79.5
1956.0     0.354     77.3
1957.0     0.381     75.3
1958.0     0.407     73.6
1959.0     0.433     72.1
1960.0     0.458     70.8
1961.0     0.481     69.6
1962.0     0.505     68.5
1963.0     0.527     67.5
1964.0     0.549     66.6
1965.0     0.571     65.8
1966.0     0.591     65.0
1967.0     0.612     64.3
1968.0     0.632     63.6
1969.0     0.651     63.0
1970.0     0.670     62.4
1971.0     0.689     61.8
1972.0     0.707     61.3
1973.0     0.725     60.8
1974.0     0.743     60.3
1975.0     0.760     59.8
1976.0     0.777     59.4
1977.0     0.794     58.9
1978.0     0.810     58.5
1979.0     0.826     58.1
1980.0     0.842     57.8
1981.0     0.857     57.4
1982.0     0.873     57.1
1983.0     0.888     56.7
1984.0     0.902     56.4
1985.0     0.917     56.1
1986.0     0.931     55.8
1987.0     0.945     55.5
1988.0     0.959     55.2
1989.0     0.973     54.9
1990.0     0.986     54.6
1991.0     1.000     54.4
1992.0     1.013     54.1
1993.0     1.026     53.8
1994.0     1.038     53.6
1995.0     1.051     53.4
1996.0     1.063     53.1
1997.0     1.075     52.9
1998.0     1.087     52.7
1999.0     1.099     52.4
2000.0     1.111     52.2
2001.0     1.122     52.0
2002.0     1.134     51.8
2003.0     1.145     51.6
2004.0     1.156     51.4
2005.0     1.167     51.2
2006.0     1.177     51.0
2007.0     1.188     50.8
2008.0     1.198     50.7
2009.0     1.209     50.5
2010.0     1.219     50.3
2011.0     1.229     50.1
2012.0     1.239     49.9
2013.0     1.248     49.8
2014.0     1.258     49.6
2015.0     1.268     49.4
2016.0     1.277     49.3
2017.0     1.286     49.1
2018.0     1.295     49.0
2019.0     1.304     48.8
2020.0     1.313     48.7
2021.0     1.322     48.5
2022.0     1.331     48.4
2023.0     1.339     48.2
2024.0     1.348     48.1
2025.0     1.356     47.9
2026.0     1.364     47.8
2027.0     1.372     47.6
2028.0     1.380     47.5
2029.0     1.388     47.4
2030.0     1.396     47.2
2031.0     1.403     47.1
2032.0     1.411     47.0
2033.0     1.418     46.8
2034.0     1.426     46.7
2035.0     1.433     46.6
2036.0     1.440     46.4
2037.0     1.447     46.3
2038.0     1.454     46.2
2039.0     1.461     46.1
2040.0     1.468     45.9
2041.0     1.474     45.8
2042.0     1.481     45.7
2043.0     1.487     45.6
2044.0     1.494     45.5
2045.0     1.500     45.4
2046.0     1.506     45.2
2047.0     1.512     45.1
2048.0     1.518     45.0
2049.0     1.524     44.9
2050.0     1.530     44.8
2051.0     1.536     44.7
2052.0     1.541     44.6
2053.0     1.547     44.4
2054.0     1.552     44.3
2055.0     1.558     44.2
2056.0     1.563     44.1
2057.0     1.568     44.0
2058.0     1.573     43.9
2059.0     1.578     43.8
2060.0     1.583     43.7
2061.0     1.588     43.6
2062.0     1.593     43.5
2063.0     1.598     43.4
2064.0     1.602     43.3
2065.0     1.607     43.2
2066.0     1.611     43.1
2067.0     1.616     43.0
2068.0     1.620     42.9
2069.0     1.624     42.8
2070.0     1.628     42.7
2071.0     1.632     42.6
2072.0     1.636     42.5
2073.0     1.640     42.4
2074.0     1.644     42.3
2075.0     1.648     42.2
2076.0     1.651     42.1
2077.0     1.655     42.0
2078.0     1.658     41.9
2079.0     1.662     41.8
2080.0     1.665     41.7
2081.0     1.668     41.6
2082.0     1.672     41.5
2083.0     1.675     41.4
2084.0     1.678     41.3
2085.0     1.681     41.2
2086.0     1.684     41.2
2087.0     1.687     41.1
2088.0     1.689     41.0
2089.0     1.692     40.9
2090.0     1.695     40.8
2091.0     1.697     40.7
2092.0     1.699     40.6
2093.0     1.702     40.5
2094.0     1.704     40.4
2095.0     1.706     40.3
2096.0     1.709     40.2
2097.0     1.711     40.1
2098.0     1.713     40.1
2099.0     1.715     40.0
2100.0     1.716     39.9
2101.0     1.718     39.8
2102.0     1.720     39.7
2103.0     1.722     39.6
2104.0     1.723     39.5
2105.0     1.725     39.4
2106.0     1.726     39.3
2107.0     1.727     39.3
2108.0     1.729     39.2
2109.0     1.730     39.1
2110.0     1.731     39.0
2111.0     1.732     38.9
2112.0     1.733     38.8
2113.0     1.734     38.7
2114.0     1.735     38.6
2115.0     1.736     38.6
2116.0     1.736     38.5
2117.0     1.737     38.4
2118.0     1.738     38.3
2119.0     1.738     38.2
2120.0     1.738     38.1
2121.0     1.739     38.0
2122.0     1.739     38.0
2123.0     1.739     37.9
2124.0     1.739     37.8
2125.0     1.740     37.7
2126.0     1.740     37.6
2127.0     1.739     37.5
2128.0     1.739     37.4
2129.0     1.739     37.3
2130.0     1.739     37.3
2131.0     1.738     37.2
2132.0     1.738     37.1
2133.0     1.738     37.0
2134.0     1.737     36.9
2135.0     1.736     36.8
2136.0     1.736     36.7
2137.0     1.735     36.6
2138.0     1.734     36.6
2139.0     1.733     36.5
2140.0     1.732     36.4
2141.0     1.731     36.3
2142.0     1.730     36.2
2143.0     1.729     36.1
2144.0     1.727     36.0
2145.0     1.726     35.9
2146.0     1.725     35.9
2147.0     1.723     35.8
2148.0     1.721     35.7
2149.0     1.720     35.6
2150.0     1.718     35.5
2151.0     1.716     35.4
2152.0     1.714     35.3
2153.0     1.712     35.2
2154.0     1.710     35.1
2155.0     1.708     35.1
2156.0     1.706     35.0
2157.0     1.704     34.9
2158.0     1.702     34.8
2159.0     1.699     34.7
2160.0     1.697     34.6
2161.0     1.694     34.5
2162.0     1.692     34.4
2163.0     1.689     34.3
2164.0     1.686     34.2
2165.0     1.683     34.1
2166.0     1.680     34.1
2167.0     1.677     34.0
2168.0     1.674     33.9
2169.0     1.671     33.8
2170.0     1.668     33.7
2171.0     1.665     33.6
2172.0     1.661     33.5
2173.0     1.658     33.4
2174.0     1.654     33.3
2175.0     1.651     33.2
2176.0     1.647     33.1
2177.0     1.643     33.0
2178.0     1.639     32.9
2179.0     1.635     32.8
2180.0     1.631     32.7
2181.0     1.627     32.6
2182.0     1.623     32.5
2183.0     1.619     32.4
2184.0     1.614     32.3
2185.0     1.610     32.2
2186.0     1.605     32.1
2187.0     1.601     32.0
2188.0     1.596     31.9
2189.0     1.591     31.8
2190.0     1.587     31.7
2191.0     1.582     31.6
2192.0     1.577     31.5
2193.0     1.572     31.4
2194.0     1.566     31.3
2195.0     1.561     31.2
2196.0     1.556     31.1
2197.0     1.550     31.0
2198.0     1.545     30.8
2199.0     1.539     30.7
2200.0     1.533     30.6






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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