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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:36:29

Orbital Elements for STT42AB

WDS:	STT42AB	WDS ID/Discoverer
P:	297.720	Orbital period (years)
a:	0.295	Semi-major axis (arcseconds)
i:	80.3	Inclination (degrees)
Ω:	96.1	Longitude of ascending node (degrees)
T:	1985.660	Epoch of periastron passage (year)
e:	0.353	Eccentricity
ω:	222.4	Longitude of periastron (degrees)
Start-Year:	1877.0	Year
End-Year:	2173.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT42AB

Position:	023318.90+521832.3	Epoch-2000 right ascension and declination
WDS-ID:	02333+5219	WDS designation
Discoverer Code:	STT42AB	Discover designation and components
ADS number:	1938	Aitken Double Star catalog
HD number:	15703	HD catalog number
Hipparcos number:	11889	Hipparcos catalog number
V1:	7.11	Magnitude of the primary
V2:	8.03	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1996	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STT42AB

WDS 6th Orbit including measures of STT42AB

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

Ephemeris of STT42AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.162     84.3
-------------------------
1877.0     0.153    118.9
1878.0     0.149    119.6
1879.0     0.145    120.4
1880.0     0.140    121.2
1881.0     0.136    122.1
1882.0     0.132    123.0
1883.0     0.128    124.0
1884.0     0.124    125.0
1885.0     0.119    126.1
1886.0     0.115    127.3
1887.0     0.111    128.6
1888.0     0.107    130.0
1889.0     0.103    131.5
1890.0     0.099    133.2
1891.0     0.095    134.9
1892.0     0.091    136.8
1893.0     0.088    138.9
1894.0     0.084    141.2
1895.0     0.080    143.6
1896.0     0.077    146.3
1897.0     0.074    149.2
1898.0     0.071    152.4
1899.0     0.068    155.8
1900.0     0.065    159.6
1901.0     0.063    163.6
1902.0     0.061    167.9
1903.0     0.060    172.5
1904.0     0.058    177.2
1905.0     0.057    182.2
1906.0     0.057    187.3
1907.0     0.057    192.4
1908.0     0.058    197.4
1909.0     0.058    202.4
1910.0     0.060    207.1
1911.0     0.061    211.7
1912.0     0.063    215.9
1913.0     0.066    219.9
1914.0     0.068    223.6
1915.0     0.071    227.1
1916.0     0.074    230.2
1917.0     0.077    233.1
1918.0     0.081    235.8
1919.0     0.084    238.2
1920.0     0.088    240.5
1921.0     0.091    242.5
1922.0     0.095    244.4
1923.0     0.099    246.2
1924.0     0.103    247.8
1925.0     0.107    249.3
1926.0     0.111    250.7
1927.0     0.115    252.0
1928.0     0.119    253.2
1929.0     0.123    254.4
1930.0     0.127    255.4
1931.0     0.131    256.4
1932.0     0.134    257.4
1933.0     0.138    258.3
1934.0     0.142    259.1
1935.0     0.146    259.9
1936.0     0.150    260.7
1937.0     0.153    261.4
1938.0     0.157    262.1
1939.0     0.161    262.7
1940.0     0.164    263.4
1941.0     0.167    264.0
1942.0     0.171    264.6
1943.0     0.174    265.1
1944.0     0.177    265.7
1945.0     0.180    266.2
1946.0     0.183    266.7
1947.0     0.186    267.2
1948.0     0.189    267.6
1949.0     0.191    268.1
1950.0     0.194    268.6
1951.0     0.196    269.0
1952.0     0.198    269.4
1953.0     0.200    269.8
1954.0     0.202    270.2
1955.0     0.203    270.6
1956.0     0.205    271.0
1957.0     0.206    271.4
1958.0     0.207    271.8
1959.0     0.208    272.2
1960.0     0.209    272.6
1961.0     0.209    273.0
1962.0     0.210    273.3
1963.0     0.210    273.7
1964.0     0.210    274.1
1965.0     0.209    274.5
1966.0     0.209    274.9
1967.0     0.208    275.2
1968.0     0.207    275.6
1969.0     0.205    276.0
1970.0     0.203    276.4
1971.0     0.202    276.8
1972.0     0.199    277.2
1973.0     0.197    277.7
1974.0     0.194    278.1
1975.0     0.191    278.5
1976.0     0.188    279.0
1977.0     0.184    279.5
1978.0     0.180    280.0
1979.0     0.176    280.5
1980.0     0.172    281.0
1981.0     0.167    281.6
1982.0     0.162    282.2
1983.0     0.157    282.9
1984.0     0.152    283.6
1985.0     0.146    284.3
1986.0     0.141    285.1
1987.0     0.135    286.0
1988.0     0.128    287.0
1989.0     0.122    288.0
1990.0     0.116    289.2
1991.0     0.109    290.5
1992.0     0.102    292.0
1993.0     0.095    293.7
1994.0     0.088    295.7
1995.0     0.082    298.0
1996.0     0.075    300.7
1997.0     0.068    304.0
1998.0     0.061    308.0
1999.0     0.055    312.9
2000.0     0.049    319.0
2001.0     0.044    326.8
2002.0     0.040    336.4
2003.0     0.037    348.0
2004.0     0.035      1.0
2005.0     0.036     14.3
2006.0     0.038     26.7
2007.0     0.042     37.2
2008.0     0.047     45.7
2009.0     0.052     52.5
2010.0     0.058     58.0
2011.0     0.065     62.3
2012.0     0.072     65.9
2013.0     0.079     68.8
2014.0     0.086     71.3
2015.0     0.093     73.4
2016.0     0.100     75.1
2017.0     0.107     76.7
2018.0     0.114     78.0
2019.0     0.121     79.2
2020.0     0.128     80.3
2021.0     0.135     81.3
2022.0     0.142     82.1
2023.0     0.149     82.9
2024.0     0.155     83.6
2025.0     0.162     84.3
2026.0     0.168     84.9
2027.0     0.175     85.5
2028.0     0.181     86.0
2029.0     0.187     86.5
2030.0     0.193     86.9
2031.0     0.199     87.4
2032.0     0.205     87.8
2033.0     0.211     88.1
2034.0     0.217     88.5
2035.0     0.222     88.9
2036.0     0.228     89.2
2037.0     0.233     89.5
2038.0     0.238     89.8
2039.0     0.243     90.1
2040.0     0.248     90.4
2041.0     0.253     90.6
2042.0     0.258     90.9
2043.0     0.262     91.1
2044.0     0.267     91.4
2045.0     0.271     91.6
2046.0     0.276     91.8
2047.0     0.280     92.0
2048.0     0.284     92.2
2049.0     0.288     92.4
2050.0     0.292     92.6
2051.0     0.295     92.8
2052.0     0.299     93.0
2053.0     0.302     93.2
2054.0     0.306     93.4
2055.0     0.309     93.6
2056.0     0.312     93.7
2057.0     0.315     93.9
2058.0     0.318     94.1
2059.0     0.321     94.2
2060.0     0.324     94.4
2061.0     0.327     94.5
2062.0     0.329     94.7
2063.0     0.332     94.8
2064.0     0.334     95.0
2065.0     0.336     95.1
2066.0     0.339     95.3
2067.0     0.341     95.4
2068.0     0.343     95.6
2069.0     0.344     95.7
2070.0     0.346     95.9
2071.0     0.348     96.0
2072.0     0.350     96.1
2073.0     0.351     96.3
2074.0     0.353     96.4
2075.0     0.354     96.5
2076.0     0.355     96.7
2077.0     0.356     96.8
2078.0     0.357     96.9
2079.0     0.358     97.1
2080.0     0.359     97.2
2081.0     0.360     97.3
2082.0     0.361     97.4
2083.0     0.361     97.6
2084.0     0.362     97.7
2085.0     0.363     97.8
2086.0     0.363     97.9
2087.0     0.363     98.1
2088.0     0.363     98.2
2089.0     0.364     98.3
2090.0     0.364     98.4
2091.0     0.364     98.6
2092.0     0.364     98.7
2093.0     0.364     98.8
2094.0     0.363     98.9
2095.0     0.363     99.1
2096.0     0.363     99.2
2097.0     0.362     99.3
2098.0     0.362     99.5
2099.0     0.361     99.6
2100.0     0.360     99.7
2101.0     0.360     99.8
2102.0     0.359    100.0
2103.0     0.358    100.1
2104.0     0.357    100.2
2105.0     0.356    100.4
2106.0     0.355    100.5
2107.0     0.354    100.6
2108.0     0.353    100.7
2109.0     0.351    100.9
2110.0     0.350    101.0
2111.0     0.349    101.2
2112.0     0.347    101.3
2113.0     0.346    101.4
2114.0     0.344    101.6
2115.0     0.342    101.7
2116.0     0.341    101.9
2117.0     0.339    102.0
2118.0     0.337    102.1
2119.0     0.335    102.3
2120.0     0.333    102.4
2121.0     0.331    102.6
2122.0     0.329    102.7
2123.0     0.327    102.9
2124.0     0.325    103.0
2125.0     0.322    103.2
2126.0     0.320    103.4
2127.0     0.318    103.5
2128.0     0.315    103.7
2129.0     0.313    103.9
2130.0     0.310    104.0
2131.0     0.308    104.2
2132.0     0.305    104.4
2133.0     0.302    104.6
2134.0     0.300    104.7
2135.0     0.297    104.9
2136.0     0.294    105.1
2137.0     0.291    105.3
2138.0     0.288    105.5
2139.0     0.285    105.7
2140.0     0.282    105.9
2141.0     0.279    106.1
2142.0     0.276    106.4
2143.0     0.273    106.6
2144.0     0.270    106.8
2145.0     0.266    107.0
2146.0     0.263    107.3
2147.0     0.260    107.5
2148.0     0.256    107.8
2149.0     0.253    108.0
2150.0     0.249    108.3
2151.0     0.246    108.5
2152.0     0.242    108.8
2153.0     0.239    109.1
2154.0     0.235    109.4
2155.0     0.231    109.7
2156.0     0.228    110.0
2157.0     0.224    110.4
2158.0     0.220    110.7
2159.0     0.216    111.0
2160.0     0.213    111.4
2161.0     0.209    111.8
2162.0     0.205    112.2
2163.0     0.201    112.6
2164.0     0.197    113.0
2165.0     0.193    113.4
2166.0     0.189    113.9
2167.0     0.185    114.4
2168.0     0.181    114.8
2169.0     0.177    115.4
2170.0     0.173    115.9
2171.0     0.168    116.5
2172.0     0.164    117.1

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.