Double Star Calculator - Orbit

Orbital Elements for STF1356
WDS: STF1356 WDS ID/Discoverer
P: 117.974 Orbital period (years)
a: 0.8599 Semi-major axis (arcseconds)
i: 65.347 Inclination (degrees)
Ω: 325.982 Longitude of ascending node (degrees)
T: 1959.219 Epoch of periastron passage (year)
e: 0.5619 Eccentricity
ω: 302.54 Longitude of periastron (degrees)
Start-Year: 1966.0131138408842 Year
End-Year: 2083.986886159116 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1356
Position: 092827.41+090324.4 Epoch-2000 right ascension and declination
WDS-ID: 09285+0903 WDS designation
Discoverer Code: STF1356 Discover designation and components
ADS number: 7390 Aitken Double Star catalog
HD number: 81858 HD catalog number
Hipparcos number: 46454 Hipparcos catalog number
V1: 5.69 Magnitude of the primary
V2: 7.28 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 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: Mut2010b Reference

Double Star Orbit for STF1356



WDS 6th Orbit including measures of STF1356

-- 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 STF1356
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.966   120.51
--------------------------
1966.01    0.489   332.39
1967.01    0.502   335.56
1968.01    0.510   338.60
1969.01    0.514   341.57
1970.01    0.515   344.51
1971.01    0.514   347.44
1972.01    0.511   350.41
1973.01    0.506   353.41
1974.01    0.501   356.48
1975.01    0.494   359.63
1976.01    0.488     2.86
1977.01    0.481     6.17
1978.01    0.474     9.59
1979.01    0.468    13.10
1980.01    0.462    16.70
1981.01    0.457    20.38
1982.01    0.453    24.14
1983.01    0.450    27.96
1984.01    0.448    31.82
1985.01    0.448    35.71
1986.01    0.448    39.59
1987.01    0.450    43.45
1988.01    0.453    47.27
1989.01    0.458    51.02
1990.01    0.464    54.69
1991.01    0.471    58.25
1992.01    0.479    61.70
1993.01    0.489    65.03
1994.01    0.499    68.22
1995.01    0.511    71.27
1996.01    0.523    74.19
1997.01    0.536    76.97
1998.01    0.549    79.62
1999.01    0.564    82.13
2000.01    0.578    84.52
2001.01    0.593    86.79
2002.01    0.609    88.94
2003.01    0.625    90.99
2004.01    0.640    92.94
2005.01    0.657    94.79
2006.01    0.673    96.55
2007.01    0.689    98.23
2008.01    0.705    99.83
2009.01    0.722   101.36
2010.01    0.738   102.83
2011.01    0.754   104.23
2012.01    0.770   105.57
2013.01    0.786   106.85
2014.01    0.801   108.09
2015.01    0.816   109.28
2016.01    0.831   110.43
2017.01    0.846   111.54
2018.01    0.860   112.61
2019.01    0.874   113.64
2020.01    0.888   114.64
2021.01    0.901   115.62
2022.01    0.914   116.56
2023.01    0.927   117.48
2024.01    0.938   118.38
2025.01    0.950   119.25
2026.01    0.961   120.10
2027.01    0.971   120.94
2028.01    0.981   121.75
2029.01    0.990   122.55
2030.01    0.999   123.34
2031.01    1.007   124.12
2032.01    1.014   124.88
2033.01    1.021   125.63
2034.01    1.027   126.37
2035.01    1.032   127.11
2036.01    1.037   127.83
2037.01    1.040   128.56
2038.01    1.043   129.27
2039.01    1.045   129.99
2040.01    1.046   130.70
2041.01    1.047   131.41
2042.01    1.046   132.12
2043.01    1.044   132.83
2044.01    1.042   133.55
2045.01    1.038   134.27
2046.01    1.033   135.00
2047.01    1.027   135.73
2048.01    1.020   136.47
2049.01    1.011   137.23
2050.01    1.001   138.00
2051.01    0.990   138.78
2052.01    0.977   139.59
2053.01    0.963   140.41
2054.01    0.947   141.27
2055.01    0.929   142.15
2056.01    0.910   143.07
2057.01    0.889   144.04
2058.01    0.865   145.05
2059.01    0.840   146.12
2060.01    0.812   147.26
2061.01    0.782   148.48
2062.01    0.750   149.81
2063.01    0.715   151.26
2064.01    0.677   152.87
2065.01    0.636   154.68
2066.01    0.591   156.75
2067.01    0.544   159.17
2068.01    0.494   162.06
2069.01    0.440   165.65
2070.01    0.384   170.25
2071.01    0.326   176.48
2072.01    0.268   185.42
2073.01    0.215   198.98
2074.01    0.177   219.78
2075.01    0.167   247.10
2076.01    0.189   272.50
2077.01    0.233   290.33
2078.01    0.284   302.10
2079.01    0.334   310.27
2080.01    0.379   316.39
2081.01    0.417   321.29
2082.01    0.448   325.44
2083.01    0.472   329.12






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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:18:35



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