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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:32

Orbital Elements for STF1967

WDS:	STF1967	WDS ID/Discoverer
P:	91.200	Orbital period (years)
a:	0.729	Semi-major axis (arcseconds)
i:	94.45	Inclination (degrees)
Ω:	111.75	Longitude of ascending node (degrees)
T:	1931.600	Epoch of periastron passage (year)
e:	0.48	Eccentricity
ω:	103.8	Longitude of periastron (degrees)
Start-Year:	1980.0	Year
End-Year:	2070.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1967

Position:	154244.57+261744.3	Epoch-2000 right ascension and declination
WDS-ID:	15427+2618	WDS designation
Discoverer Code:	STF1967	Discover designation and components
ADS number:	9757	Aitken Double Star catalog
HD number:	140436	HD catalog number
Hipparcos number:	76952	Hipparcos catalog number
V1:	4.04	Magnitude of the primary
V2:	5.60	Magnitude of the secondary
Equinox:		Equinox
Date:	2011	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for STF1967

WDS 6th Orbit including measures of STF1967

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

Ephemeris of STF1967

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.261    296.8
-------------------------
1980.0     0.346    125.0
1981.0     0.372    123.9
1982.0     0.399    122.9
1983.0     0.424    122.1
1984.0     0.449    121.3
1985.0     0.474    120.7
1986.0     0.497    120.1
1987.0     0.520    119.5
1988.0     0.543    119.0
1989.0     0.564    118.5
1990.0     0.584    118.1
1991.0     0.604    117.7
1992.0     0.622    117.3
1993.0     0.639    117.0
1994.0     0.656    116.6
1995.0     0.670    116.3
1996.0     0.684    116.0
1997.0     0.695    115.7
1998.0     0.706    115.4
1999.0     0.714    115.1
2000.0     0.721    114.8
2001.0     0.726    114.6
2002.0     0.728    114.3
2003.0     0.729    114.0
2004.0     0.727    113.8
2005.0     0.722    113.5
2006.0     0.715    113.2
2007.0     0.704    112.9
2008.0     0.690    112.6
2009.0     0.673    112.3
2010.0     0.651    112.0
2011.0     0.626    111.6
2012.0     0.595    111.3
2013.0     0.560    110.8
2014.0     0.519    110.3
2015.0     0.472    109.8
2016.0     0.419    109.0
2017.0     0.359    108.1
2018.0     0.293    106.7
2019.0     0.222    104.6
2020.0     0.145    100.1
2021.0     0.067     85.3
2022.0     0.038    342.8
2023.0     0.110    306.6
2024.0     0.188    299.7
2025.0     0.261    296.8
2026.0     0.326    295.1
2027.0     0.382    294.0
2028.0     0.430    293.1
2029.0     0.469    292.4
2030.0     0.501    291.8
2031.0     0.525    291.3
2032.0     0.542    290.8
2033.0     0.554    290.3
2034.0     0.560    289.8
2035.0     0.562    289.4
2036.0     0.560    288.9
2037.0     0.554    288.5
2038.0     0.546    288.0
2039.0     0.534    287.5
2040.0     0.521    287.0
2041.0     0.505    286.4
2042.0     0.487    285.9
2043.0     0.468    285.2
2044.0     0.447    284.6
2045.0     0.425    283.8
2046.0     0.401    283.0
2047.0     0.377    282.0
2048.0     0.352    281.0
2049.0     0.326    279.7
2050.0     0.300    278.2
2051.0     0.273    276.5
2052.0     0.246    274.4
2053.0     0.219    271.7
2054.0     0.192    268.3
2055.0     0.166    263.8
2056.0     0.140    257.7
2057.0     0.117    249.0
2058.0     0.098    236.4
2059.0     0.085    219.0
2060.0     0.082    198.0
2061.0     0.090    178.1
2062.0     0.106    162.8
2063.0     0.127    152.2
2064.0     0.152    144.8
2065.0     0.177    139.4
2066.0     0.204    135.5
2067.0     0.232    132.5
2068.0     0.259    130.1
2069.0     0.286    128.2

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.