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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:12:43

Orbital Elements for STF1670AB

WDS:	STF1670AB	WDS ID/Discoverer
P:	169.104	Orbital period (years)
a:	3.639	Semi-major axis (arcseconds)
i:	149.46	Inclination (degrees)
Ω:	35.34	Longitude of ascending node (degrees)
T:	2005.511	Epoch of periastron passage (year)
e:	0.8815	Eccentricity
ω:	255.02	Longitude of periastron (degrees)
Start-Year:	1941.0	Year
End-Year:	2109.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1670AB

Position:	124139.60-012657.9	Epoch-2000 right ascension and declination
WDS-ID:	12417-0127	WDS designation
Discoverer Code:	STF1670AB	Discover designation and components
ADS number:	8630	Aitken Double Star catalog
HD number:	110379	HD catalog number
Hipparcos number:	61941	Hipparcos catalog number
V1:	3.48	Magnitude of the primary
V2:	3.53	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2006	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF1670AB

WDS 6th Orbit including measures of STF1670AB

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

Ephemeris of STF1670AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     3.474    351.9
-------------------------
1941.0     5.703    315.9
1942.0     5.679    315.6
1943.0     5.653    315.2
1944.0     5.626    314.9
1945.0     5.599    314.5
1946.0     5.570    314.1
1947.0     5.540    313.8
1948.0     5.508    313.4
1949.0     5.476    313.0
1950.0     5.442    312.6
1951.0     5.408    312.2
1952.0     5.372    311.8
1953.0     5.334    311.4
1954.0     5.296    311.0
1955.0     5.256    310.6
1956.0     5.215    310.2
1957.0     5.173    309.8
1958.0     5.129    309.3
1959.0     5.085    308.9
1960.0     5.038    308.4
1961.0     4.991    308.0
1962.0     4.942    307.5
1963.0     4.891    307.1
1964.0     4.840    306.6
1965.0     4.786    306.1
1966.0     4.732    305.6
1967.0     4.675    305.0
1968.0     4.617    304.5
1969.0     4.558    304.0
1970.0     4.497    303.4
1971.0     4.434    302.8
1972.0     4.370    302.2
1973.0     4.304    301.6
1974.0     4.236    301.0
1975.0     4.166    300.4
1976.0     4.094    299.7
1977.0     4.020    299.0
1978.0     3.945    298.3
1979.0     3.867    297.5
1980.0     3.787    296.7
1981.0     3.705    295.9
1982.0     3.620    295.1
1983.0     3.533    294.2
1984.0     3.444    293.2
1985.0     3.351    292.2
1986.0     3.256    291.2
1987.0     3.158    290.1
1988.0     3.057    288.9
1989.0     2.953    287.6
1990.0     2.845    286.2
1991.0     2.734    284.8
1992.0     2.618    283.2
1993.0     2.498    281.4
1994.0     2.373    279.5
1995.0     2.243    277.3
1996.0     2.108    274.9
1997.0     1.966    272.1
1998.0     1.817    268.9
1999.0     1.660    265.1
2000.0     1.493    260.5
2001.0     1.315    254.7
2002.0     1.123    246.9
2003.0     0.912    235.8
2004.0     0.680    217.4
2005.0     0.444    179.0
2006.0     0.409    104.5
2007.0     0.655     60.1
2008.0     0.924     41.3
2009.0     1.168     30.7
2010.0     1.389     23.7
2011.0     1.591     18.5
2012.0     1.777     14.4
2013.0     1.951     11.1
2014.0     2.114      8.4
2015.0     2.268      6.0
2016.0     2.414      3.9
2017.0     2.553      2.0
2018.0     2.685      0.4
2019.0     2.812    358.8
2020.0     2.933    357.5
2021.0     3.050    356.2
2022.0     3.162    355.0
2023.0     3.269    353.9
2024.0     3.373    352.8
2025.0     3.474    351.9
2026.0     3.571    350.9
2027.0     3.664    350.1
2028.0     3.755    349.2
2029.0     3.842    348.4
2030.0     3.927    347.7
2031.0     4.009    346.9
2032.0     4.089    346.2
2033.0     4.166    345.6
2034.0     4.241    344.9
2035.0     4.313    344.3
2036.0     4.384    343.7
2037.0     4.452    343.1
2038.0     4.518    342.5
2039.0     4.582    342.0
2040.0     4.645    341.4
2041.0     4.705    340.9
2042.0     4.764    340.4
2043.0     4.821    339.9
2044.0     4.876    339.4
2045.0     4.929    338.9
2046.0     4.981    338.5
2047.0     5.031    338.0
2048.0     5.080    337.6
2049.0     5.127    337.1
2050.0     5.172    336.7
2051.0     5.216    336.3
2052.0     5.259    335.8
2053.0     5.300    335.4
2054.0     5.340    335.0
2055.0     5.378    334.6
2056.0     5.415    334.2
2057.0     5.451    333.8
2058.0     5.486    333.5
2059.0     5.519    333.1
2060.0     5.550    332.7
2061.0     5.581    332.3
2062.0     5.610    332.0
2063.0     5.638    331.6
2064.0     5.665    331.3
2065.0     5.691    330.9
2066.0     5.715    330.5
2067.0     5.738    330.2
2068.0     5.760    329.9
2069.0     5.781    329.5
2070.0     5.801    329.2
2071.0     5.820    328.8
2072.0     5.837    328.5
2073.0     5.854    328.2
2074.0     5.869    327.8
2075.0     5.883    327.5
2076.0     5.896    327.2
2077.0     5.908    326.8
2078.0     5.919    326.5
2079.0     5.928    326.2
2080.0     5.937    325.8
2081.0     5.945    325.5
2082.0     5.951    325.2
2083.0     5.957    324.9
2084.0     5.961    324.6
2085.0     5.964    324.2
2086.0     5.967    323.9
2087.0     5.968    323.6
2088.0     5.968    323.3
2089.0     5.967    322.9
2090.0     5.965    322.6
2091.0     5.962    322.3
2092.0     5.958    322.0
2093.0     5.953    321.7
2094.0     5.947    321.3
2095.0     5.940    321.0
2096.0     5.932    320.7
2097.0     5.923    320.4
2098.0     5.912    320.0
2099.0     5.901    319.7
2100.0     5.888    319.4
2101.0     5.875    319.0
2102.0     5.860    318.7
2103.0     5.845    318.4
2104.0     5.828    318.0
2105.0     5.810    317.7
2106.0     5.792    317.3
2107.0     5.772    317.0
2108.0     5.751    316.7

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.