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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:58:36

Orbital Elements for STT79

WDS:	STT79	WDS ID/Discoverer
P:	89.700	Orbital period (years)
a:	0.59	Semi-major axis (arcseconds)
i:	53.0	Inclination (degrees)
Ω:	62.0	Longitude of ascending node (degrees)
T:	1987.000	Epoch of periastron passage (year)
e:	0.6	Eccentricity
ω:	134.0	Longitude of periastron (degrees)
Start-Year:	1981.0	Year
End-Year:	2069.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT79

Position:	041954.78+163121.6	Epoch-2000 right ascension and declination
WDS-ID:	04199+1631	WDS designation
Discoverer Code:	STT79	Discover designation and components
ADS number:	3135	Aitken Double Star catalog
HD number:	27383	HD catalog number
Hipparcos number:	20215	Hipparcos catalog number
V1:	7.26	Magnitude of the primary
V2:	8.62	Magnitude of the secondary
Equinox:	2000	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 STT79

WDS 6th Orbit including measures of STT79

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

Ephemeris of STT79

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.704     21.6
-------------------------
1981.0     0.296     94.9
1982.0     0.250    104.0
1983.0     0.207    117.0
1984.0     0.172    136.2
1985.0     0.156    162.0
1986.0     0.165    188.8
1987.0     0.193    210.1
1988.0     0.226    225.5
1989.0     0.255    237.1
1990.0     0.277    246.6
1991.0     0.293    254.9
1992.0     0.304    262.4
1993.0     0.312    269.5
1994.0     0.318    276.3
1995.0     0.323    282.9
1996.0     0.328    289.2
1997.0     0.333    295.4
1998.0     0.339    301.4
1999.0     0.346    307.1
2000.0     0.355    312.6
2001.0     0.364    317.8
2002.0     0.375    322.7
2003.0     0.386    327.3
2004.0     0.399    331.7
2005.0     0.412    335.8
2006.0     0.426    339.6
2007.0     0.441    343.2
2008.0     0.456    346.6
2009.0     0.471    349.7
2010.0     0.486    352.6
2011.0     0.502    355.4
2012.0     0.518    358.0
2013.0     0.533      0.4
2014.0     0.549      2.7
2015.0     0.565      4.9
2016.0     0.580      6.9
2017.0     0.595      8.9
2018.0     0.610     10.7
2019.0     0.625     12.5
2020.0     0.639     14.2
2021.0     0.653     15.8
2022.0     0.666     17.3
2023.0     0.679     18.8
2024.0     0.692     20.3
2025.0     0.704     21.6
2026.0     0.716     23.0
2027.0     0.727     24.3
2028.0     0.737     25.5
2029.0     0.747     26.8
2030.0     0.757     27.9
2031.0     0.766     29.1
2032.0     0.774     30.2
2033.0     0.782     31.3
2034.0     0.788     32.4
2035.0     0.795     33.5
2036.0     0.800     34.6
2037.0     0.805     35.6
2038.0     0.810     36.6
2039.0     0.813     37.7
2040.0     0.816     38.7
2041.0     0.818     39.7
2042.0     0.819     40.7
2043.0     0.819     41.7
2044.0     0.818     42.7
2045.0     0.817     43.7
2046.0     0.814     44.7
2047.0     0.811     45.7
2048.0     0.806     46.8
2049.0     0.800     47.8
2050.0     0.794     48.9
2051.0     0.786     49.9
2052.0     0.777     51.0
2053.0     0.767     52.2
2054.0     0.756     53.3
2055.0     0.743     54.5
2056.0     0.729     55.8
2057.0     0.713     57.1
2058.0     0.696     58.4
2059.0     0.677     59.9
2060.0     0.656     61.4
2061.0     0.634     63.0
2062.0     0.609     64.7
2063.0     0.583     66.6
2064.0     0.554     68.7
2065.0     0.523     71.0
2066.0     0.489     73.6
2067.0     0.453     76.7
2068.0     0.414     80.3

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.