Double Star Calculator - Orbit

Orbital Elements for STF1865AB
WDS: STF1865AB WDS ID/Discoverer
P: 125.240 Orbital period (years)
a: 0.825 Semi-major axis (arcseconds)
i: 126.0 Inclination (degrees)
Ω: 176.5 Longitude of ascending node (degrees)
T: 1898.580 Epoch of periastron passage (year)
e: 0.98 Eccentricity
ω: 61.8 Longitude of periastron (degrees)
Start-Year: 1962.38 Year
End-Year: 2087.62 Year
Epoch: 2026.5 Besselian Epoch
 
Further data from the WDS Sixth Catalog of Orbits for STF1865AB
Position: 144108.92+134342.0 Epoch-2000 right ascension and declination
WDS-ID: 14411+1344 WDS designation
Discoverer Code: STF1865AB Discover designation and components
ADS number: 9343 Aitken Double Star catalog
HD number: 129246 HD catalog number
Hipparcos number: 71795 Hipparcos catalog number
V1: 4.46 Magnitude of the primary
V2: 4.55 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2006 Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Sca2007f Reference

Double Star Orbit for STF1865AB



WDS 6th Orbit including measures of STF1865AB

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of STF1865AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.282   331.48
--------------------------
1962.38    1.143   308.67
1963.38    1.141   308.49
1964.38    1.138   308.31
1965.38    1.135   308.14
1966.38    1.132   307.96
1967.38    1.128   307.78
1968.38    1.124   307.60
1969.38    1.120   307.42
1970.38    1.115   307.23
1971.38    1.110   307.05
1972.38    1.105   306.86
1973.38    1.099   306.68
1974.38    1.093   306.48
1975.38    1.086   306.29
1976.38    1.079   306.10
1977.38    1.072   305.90
1978.38    1.064   305.70
1979.38    1.056   305.49
1980.38    1.047   305.29
1981.38    1.038   305.08
1982.38    1.029   304.86
1983.38    1.019   304.64
1984.38    1.009   304.42
1985.38    0.999   304.20
1986.38    0.988   303.96
1987.38    0.976   303.73
1988.38    0.965   303.48
1989.38    0.952   303.23
1990.38    0.940   302.98
1991.38    0.926   302.72
1992.38    0.913   302.44
1993.38    0.899   302.17
1994.38    0.884   301.88
1995.38    0.869   301.58
1996.38    0.853   301.27
1997.38    0.837   300.95
1998.38    0.820   300.62
1999.38    0.803   300.27
2000.38    0.785   299.91
2001.38    0.766   299.53
2002.38    0.747   299.13
2003.38    0.727   298.71
2004.38    0.707   298.26
2005.38    0.685   297.79
2006.38    0.663   297.29
2007.38    0.641   296.75
2008.38    0.617   296.17
2009.38    0.592   295.54
2010.38    0.567   294.86
2011.38    0.540   294.11
2012.38    0.512   293.28
2013.38    0.483   292.36
2014.38    0.453   291.31
2015.38    0.421   290.11
2016.38    0.387   288.71
2017.38    0.352   287.03
2018.38    0.314   284.96
2019.38    0.273   282.29
2020.38    0.229   278.64
2021.38    0.181   273.14
2022.38    0.126   263.17
2023.38    0.060   233.82
2024.38    0.106   345.96
2025.38    0.203   335.89
2026.38    0.274   331.84
2027.38    0.333   329.34
2028.38    0.384   327.55
2029.38    0.429   326.17
2030.38    0.471   325.04
2031.38    0.510   324.08
2032.38    0.545   323.26
2033.38    0.579   322.54
2034.38    0.610   321.89
2035.38    0.639   321.30
2036.38    0.667   320.76
2037.38    0.694   320.27
2038.38    0.719   319.81
2039.38    0.743   319.38
2040.38    0.766   318.98
2041.38    0.787   318.60
2042.38    0.808   318.24
2043.38    0.828   317.90
2044.38    0.847   317.57
2045.38    0.865   317.26
2046.38    0.882   316.96
2047.38    0.899   316.67
2048.38    0.915   316.40
2049.38    0.930   316.13
2050.38    0.945   315.87
2051.38    0.959   315.61
2052.38    0.972   315.37
2053.38    0.985   315.13
2054.38    0.997   314.90
2055.38    1.008   314.67
2056.38    1.019   314.45
2057.38    1.030   314.23
2058.38    1.040   314.01
2059.38    1.049   313.80
2060.38    1.058   313.60
2061.38    1.067   313.40
2062.38    1.075   313.20
2063.38    1.083   313.00
2064.38    1.090   312.81
2065.38    1.097   312.61
2066.38    1.103   312.43
2067.38    1.109   312.24
2068.38    1.114   312.05
2069.38    1.119   311.87
2070.38    1.124   311.69
2071.38    1.128   311.51
2072.38    1.132   311.33
2073.38    1.135   311.15
2074.38    1.138   310.97
2075.38    1.141   310.80
2076.38    1.143   310.62
2077.38    1.145   310.45
2078.38    1.147   310.27
2079.38    1.148   310.10
2080.38    1.149   309.92
2081.38    1.149   309.75
2082.38    1.149   309.58
2083.38    1.149   309.40
2084.38    1.148   309.23
2085.38    1.147   309.06
2086.38    1.145   308.88
2087.38    1.144   308.71



 

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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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Double Star Calculator:   Version 1.2 ($Rev: 2397 $)
Report created:   2026-06-25 17:07:53


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