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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:29:48

Orbital Elements for STF963AB

WDS:	STF963AB	WDS ID/Discoverer
P:	316.200	Orbital period (years)
a:	0.614	Semi-major axis (arcseconds)
i:	64.7	Inclination (degrees)
Ω:	51.0	Longitude of ascending node (degrees)
T:	1961.990	Epoch of periastron passage (year)
e:	0.441	Eccentricity
ω:	170.3	Longitude of periastron (degrees)
Start-Year:	1867.0	Year
End-Year:	2183.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF963AB

Position:	065305.06+592655.2	Epoch-2000 right ascension and declination
WDS-ID:	06531+5927	WDS designation
Discoverer Code:	STF963AB	Discover designation and components
ADS number:	5514	Aitken Double Star catalog
HD number:	49618	HD catalog number
Hipparcos number:	33048	Hipparcos catalog number
V1:	6.00	Magnitude of the primary
V2:	6.53	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF963AB

WDS 6th Orbit including measures of STF963AB

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

Ephemeris of STF963AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.355      5.0
-------------------------
1867.0     0.726     61.8
1868.0     0.720     62.1
1869.0     0.714     62.4
1870.0     0.708     62.8
1871.0     0.701     63.1
1872.0     0.695     63.4
1873.0     0.688     63.8
1874.0     0.682     64.1
1875.0     0.675     64.5
1876.0     0.668     64.9
1877.0     0.661     65.2
1878.0     0.654     65.6
1879.0     0.646     66.0
1880.0     0.639     66.4
1881.0     0.632     66.8
1882.0     0.624     67.2
1883.0     0.616     67.6
1884.0     0.608     68.1
1885.0     0.600     68.5
1886.0     0.592     69.0
1887.0     0.584     69.5
1888.0     0.576     70.0
1889.0     0.567     70.5
1890.0     0.559     71.0
1891.0     0.550     71.5
1892.0     0.541     72.1
1893.0     0.533     72.7
1894.0     0.524     73.2
1895.0     0.515     73.9
1896.0     0.505     74.5
1897.0     0.496     75.1
1898.0     0.487     75.8
1899.0     0.477     76.5
1900.0     0.468     77.3
1901.0     0.458     78.0
1902.0     0.449     78.8
1903.0     0.439     79.7
1904.0     0.429     80.5
1905.0     0.419     81.5
1906.0     0.409     82.4
1907.0     0.399     83.4
1908.0     0.389     84.5
1909.0     0.379     85.6
1910.0     0.369     86.8
1911.0     0.359     88.0
1912.0     0.349     89.3
1913.0     0.339     90.7
1914.0     0.329     92.2
1915.0     0.319     93.8
1916.0     0.309     95.4
1917.0     0.300     97.2
1918.0     0.290     99.1
1919.0     0.281    101.1
1920.0     0.272    103.3
1921.0     0.263    105.6
1922.0     0.254    108.1
1923.0     0.246    110.7
1924.0     0.238    113.5
1925.0     0.230    116.5
1926.0     0.223    119.7
1927.0     0.217    123.1
1928.0     0.211    126.7
1929.0     0.206    130.5
1930.0     0.202    134.5
1931.0     0.198    138.6
1932.0     0.196    142.8
1933.0     0.194    147.2
1934.0     0.193    151.5
1935.0     0.194    155.9
1936.0     0.195    160.3
1937.0     0.197    164.6
1938.0     0.200    168.8
1939.0     0.203    172.9
1940.0     0.208    176.8
1941.0     0.213    180.5
1942.0     0.218    184.1
1943.0     0.224    187.4
1944.0     0.231    190.6
1945.0     0.238    193.6
1946.0     0.245    196.4
1947.0     0.252    199.1
1948.0     0.260    201.6
1949.0     0.267    204.0
1950.0     0.274    206.2
1951.0     0.281    208.4
1952.0     0.288    210.4
1953.0     0.295    212.3
1954.0     0.302    214.2
1955.0     0.308    215.9
1956.0     0.314    217.6
1957.0     0.319    219.3
1958.0     0.324    220.9
1959.0     0.329    222.4
1960.0     0.333    223.9
1961.0     0.336    225.4
1962.0     0.339    226.8
1963.0     0.342    228.3
1964.0     0.343    229.7
1965.0     0.345    231.0
1966.0     0.345    232.4
1967.0     0.346    233.8
1968.0     0.345    235.2
1969.0     0.344    236.6
1970.0     0.343    238.0
1971.0     0.341    239.4
1972.0     0.338    240.8
1973.0     0.335    242.3
1974.0     0.332    243.7
1975.0     0.328    245.2
1976.0     0.324    246.8
1977.0     0.320    248.4
1978.0     0.315    250.0
1979.0     0.310    251.7
1980.0     0.305    253.4
1981.0     0.300    255.2
1982.0     0.294    257.1
1983.0     0.289    259.0
1984.0     0.283    261.0
1985.0     0.278    263.1
1986.0     0.272    265.3
1987.0     0.267    267.6
1988.0     0.261    269.9
1989.0     0.256    272.4
1990.0     0.251    274.9
1991.0     0.247    277.6
1992.0     0.242    280.4
1993.0     0.238    283.2
1994.0     0.234    286.2
1995.0     0.231    289.2
1996.0     0.229    292.3
1997.0     0.226    295.5
1998.0     0.225    298.8
1999.0     0.223    302.0
2000.0     0.223    305.3
2001.0     0.223    308.7
2002.0     0.224    312.0
2003.0     0.225    315.2
2004.0     0.227    318.5
2005.0     0.229    321.7
2006.0     0.232    324.8
2007.0     0.235    327.8
2008.0     0.239    330.7
2009.0     0.244    333.5
2010.0     0.248    336.3
2011.0     0.254    338.9
2012.0     0.259    341.4
2013.0     0.265    343.8
2014.0     0.272    346.0
2015.0     0.278    348.2
2016.0     0.285    350.3
2017.0     0.292    352.3
2018.0     0.300    354.2
2019.0     0.307    355.9
2020.0     0.315    357.6
2021.0     0.323    359.3
2022.0     0.331      0.8
2023.0     0.339      2.3
2024.0     0.347      3.7
2025.0     0.355      5.0
2026.0     0.363      6.3
2027.0     0.372      7.5
2028.0     0.380      8.7
2029.0     0.388      9.8
2030.0     0.397     10.9
2031.0     0.405     11.9
2032.0     0.414     12.9
2033.0     0.422     13.8
2034.0     0.431     14.7
2035.0     0.439     15.6
2036.0     0.447     16.4
2037.0     0.456     17.2
2038.0     0.464     18.0
2039.0     0.472     18.8
2040.0     0.481     19.5
2041.0     0.489     20.2
2042.0     0.497     20.9
2043.0     0.505     21.5
2044.0     0.513     22.2
2045.0     0.521     22.8
2046.0     0.529     23.4
2047.0     0.537     24.0
2048.0     0.545     24.5
2049.0     0.552     25.1
2050.0     0.560     25.6
2051.0     0.568     26.1
2052.0     0.575     26.6
2053.0     0.583     27.1
2054.0     0.590     27.6
2055.0     0.597     28.1
2056.0     0.605     28.5
2057.0     0.612     29.0
2058.0     0.619     29.4
2059.0     0.626     29.8
2060.0     0.633     30.2
2061.0     0.639     30.6
2062.0     0.646     31.0
2063.0     0.653     31.4
2064.0     0.659     31.8
2065.0     0.666     32.2
2066.0     0.672     32.6
2067.0     0.678     32.9
2068.0     0.685     33.3
2069.0     0.691     33.6
2070.0     0.697     34.0
2071.0     0.703     34.3
2072.0     0.708     34.6
2073.0     0.714     35.0
2074.0     0.720     35.3
2075.0     0.725     35.6
2076.0     0.731     35.9
2077.0     0.736     36.2
2078.0     0.741     36.5
2079.0     0.747     36.8
2080.0     0.752     37.1
2081.0     0.757     37.4
2082.0     0.762     37.7
2083.0     0.766     38.0
2084.0     0.771     38.2
2085.0     0.776     38.5
2086.0     0.780     38.8
2087.0     0.785     39.1
2088.0     0.789     39.3
2089.0     0.793     39.6
2090.0     0.797     39.8
2091.0     0.801     40.1
2092.0     0.805     40.4
2093.0     0.809     40.6
2094.0     0.813     40.9
2095.0     0.816     41.1
2096.0     0.820     41.4
2097.0     0.823     41.6
2098.0     0.827     41.8
2099.0     0.830     42.1
2100.0     0.833     42.3
2101.0     0.836     42.6
2102.0     0.839     42.8
2103.0     0.842     43.0
2104.0     0.844     43.3
2105.0     0.847     43.5
2106.0     0.850     43.7
2107.0     0.852     43.9
2108.0     0.854     44.2
2109.0     0.857     44.4
2110.0     0.859     44.6
2111.0     0.861     44.8
2112.0     0.863     45.1
2113.0     0.864     45.3
2114.0     0.866     45.5
2115.0     0.868     45.7
2116.0     0.869     45.9
2117.0     0.871     46.2
2118.0     0.872     46.4
2119.0     0.873     46.6
2120.0     0.874     46.8
2121.0     0.875     47.0
2122.0     0.876     47.2
2123.0     0.877     47.4
2124.0     0.878     47.7
2125.0     0.878     47.9
2126.0     0.879     48.1
2127.0     0.879     48.3
2128.0     0.879     48.5
2129.0     0.880     48.7
2130.0     0.880     48.9
2131.0     0.880     49.2
2132.0     0.880     49.4
2133.0     0.879     49.6
2134.0     0.879     49.8
2135.0     0.878     50.0
2136.0     0.878     50.2
2137.0     0.877     50.4
2138.0     0.876     50.6
2139.0     0.876     50.9
2140.0     0.875     51.1
2141.0     0.873     51.3
2142.0     0.872     51.5
2143.0     0.871     51.7
2144.0     0.870     51.9
2145.0     0.868     52.2
2146.0     0.866     52.4
2147.0     0.865     52.6
2148.0     0.863     52.8
2149.0     0.861     53.0
2150.0     0.859     53.3
2151.0     0.856     53.5
2152.0     0.854     53.7
2153.0     0.852     53.9
2154.0     0.849     54.2
2155.0     0.847     54.4
2156.0     0.844     54.6
2157.0     0.841     54.9
2158.0     0.838     55.1
2159.0     0.835     55.3
2160.0     0.832     55.6
2161.0     0.829     55.8
2162.0     0.825     56.0
2163.0     0.822     56.3
2164.0     0.818     56.5
2165.0     0.814     56.8
2166.0     0.810     57.0
2167.0     0.806     57.3
2168.0     0.802     57.5
2169.0     0.798     57.8
2170.0     0.794     58.0
2171.0     0.789     58.3
2172.0     0.785     58.6
2173.0     0.780     58.8
2174.0     0.775     59.1
2175.0     0.770     59.4
2176.0     0.765     59.7
2177.0     0.760     60.0
2178.0     0.755     60.2
2179.0     0.750     60.5
2180.0     0.744     60.8
2181.0     0.739     61.1
2182.0     0.733     61.4

Disclaimer

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.