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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:34:17

Orbital Elements for STF2912AB
WDS: STF2912AB WDS ID/Discoverer
P: 123.530 Orbital period (years)
a: 0.714 Semi-major axis (arcseconds)
i: 89.94 Inclination (degrees)
Ω: 117.1 Longitude of ascending node (degrees)
T: 2035.380 Epoch of periastron passage (year)
e: 0.515 Eccentricity
ω: 214.6 Longitude of periastron (degrees)
Start-Year: 1964.0 Year
End-Year: 2086.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2912AB
Position: 222957.93+042554.1 Epoch-2000 right ascension and declination
WDS-ID: 22300+0426 WDS designation
Discoverer Code: STF2912AB Discover designation and components
ADS number: 15988 Aitken Double Star catalog
HD number: 213235 HD catalog number
Hipparcos number: 111062 Hipparcos catalog number
V1: 5.75 Magnitude of the primary
V2: 7.26 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF2912AB



WDS 6th Orbit including measures of STF2912AB

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


Ephemeris of STF2912AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.323    297.0
-------------------------
1964.0     0.971    117.1
1965.0     0.965    117.1
1966.0     0.959    117.1
1967.0     0.953    117.1
1968.0     0.945    117.1
1969.0     0.937    117.1
1970.0     0.928    117.1
1971.0     0.919    117.1
1972.0     0.908    117.1
1973.0     0.897    117.1
1974.0     0.886    117.1
1975.0     0.874    117.1
1976.0     0.861    117.1
1977.0     0.847    117.1
1978.0     0.833    117.1
1979.0     0.818    117.2
1980.0     0.803    117.2
1981.0     0.787    117.2
1982.0     0.770    117.2
1983.0     0.753    117.2
1984.0     0.735    117.2
1985.0     0.717    117.2
1986.0     0.698    117.2
1987.0     0.678    117.2
1988.0     0.658    117.2
1989.0     0.637    117.2
1990.0     0.616    117.2
1991.0     0.594    117.2
1992.0     0.572    117.2
1993.0     0.549    117.2
1994.0     0.526    117.2
1995.0     0.502    117.2
1996.0     0.478    117.2
1997.0     0.453    117.2
1998.0     0.428    117.2
1999.0     0.402    117.2
2000.0     0.376    117.2
2001.0     0.349    117.2
2002.0     0.322    117.3
2003.0     0.295    117.3
2004.0     0.267    117.3
2005.0     0.239    117.3
2006.0     0.210    117.3
2007.0     0.181    117.4
2008.0     0.152    117.4
2009.0     0.123    117.5
2010.0     0.093    117.6
2011.0     0.064    117.8
2012.0     0.034    118.5
2013.0     0.004    128.9
2014.0     0.026    295.4
2015.0     0.056    296.3
2016.0     0.086    296.6
2017.0     0.115    296.8
2018.0     0.145    296.8
2019.0     0.173    296.9
2020.0     0.201    296.9
2021.0     0.228    297.0
2022.0     0.254    297.0
2023.0     0.279    297.0
2024.0     0.302    297.0
2025.0     0.323    297.0
2026.0     0.342    297.0
2027.0     0.357    297.1
2028.0     0.369    297.1
2029.0     0.377    297.1
2030.0     0.380    297.1
2031.0     0.377    297.1
2032.0     0.368    297.1
2033.0     0.352    297.1
2034.0     0.329    297.1
2035.0     0.298    297.1
2036.0     0.261    297.2
2037.0     0.218    297.2
2038.0     0.170    297.2
2039.0     0.119    297.3
2040.0     0.066    297.4
2041.0     0.011    299.2
2042.0     0.043    116.5
2043.0     0.098    116.8
2044.0     0.151    116.9
2045.0     0.202    117.0
2046.0     0.252    117.0
2047.0     0.300    117.0
2048.0     0.347    117.0
2049.0     0.391    117.0
2050.0     0.433    117.0
2051.0     0.473    117.1
2052.0     0.511    117.1
2053.0     0.548    117.1
2054.0     0.582    117.1
2055.0     0.615    117.1
2056.0     0.646    117.1
2057.0     0.675    117.1
2058.0     0.703    117.1
2059.0     0.729    117.1
2060.0     0.754    117.1
2061.0     0.777    117.1
2062.0     0.798    117.1
2063.0     0.819    117.1
2064.0     0.837    117.1
2065.0     0.855    117.1
2066.0     0.871    117.1
2067.0     0.886    117.1
2068.0     0.900    117.1
2069.0     0.913    117.1
2070.0     0.925    117.1
2071.0     0.935    117.1
2072.0     0.945    117.1
2073.0     0.953    117.1
2074.0     0.960    117.1
2075.0     0.967    117.1
2076.0     0.972    117.1
2077.0     0.977    117.1
2078.0     0.980    117.1
2079.0     0.983    117.1
2080.0     0.985    117.1
2081.0     0.985    117.1
2082.0     0.985    117.1
2083.0     0.985    117.1
2084.0     0.983    117.1
2085.0     0.980    117.1






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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