Double Star Calculator - Orbit

Orbital Elements for STT406

WDS:	STT406	WDS ID/Discoverer
P:	112.160	Orbital period (years)
a:	0.3	Semi-major axis (arcseconds)
i:	141.2	Inclination (degrees)
Ω:	124.0	Longitude of ascending node (degrees)
T:	1915.570	Epoch of periastron passage (year)
e:	0.855	Eccentricity
ω:	184.4	Longitude of periastron (degrees)
Start-Year:	1968.92	Year
End-Year:	2081.08	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT406
Position:	201949.69+452149.7	Epoch-2000 right ascension and declination
WDS-ID:	20198+4522	WDS designation
Discoverer Code:	STT406	Discover designation and components
ADS number:	13723	Aitken Double Star catalog
HD number:	193701	HD catalog number
Hipparcos number:	100241	Hipparcos catalog number
V1:	7.25	Magnitude of the primary
V2:	8.74	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	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:	Lin2022b	Reference

Double Star Orbit for STT406

WDS 6th Orbit including measures of STT406

-- 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 STT406

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.052     7.41
--------------------------
1968.92    0.555   121.60
1969.92    0.556   121.22
1970.92    0.556   120.84
1971.92    0.556   120.47
1972.92    0.555   120.09
1973.92    0.555   119.71
1974.92    0.554   119.33
1975.92    0.553   118.95
1976.92    0.552   118.57
1977.92    0.550   118.18
1978.92    0.548   117.79
1979.92    0.546   117.40
1980.92    0.544   117.01
1981.92    0.541   116.61
1982.92    0.538   116.21
1983.92    0.535   115.81
1984.92    0.532   115.40
1985.92    0.528   114.98
1986.92    0.524   114.56
1987.92    0.520   114.13
1988.92    0.516   113.70
1989.92    0.511   113.25
1990.92    0.506   112.80
1991.92    0.501   112.34
1992.92    0.495   111.87
1993.92    0.489   111.39
1994.92    0.483   110.89
1995.92    0.476   110.39
1996.92    0.469   109.86
1997.92    0.462   109.33
1998.92    0.455   108.77
1999.92    0.447   108.20
2000.92    0.439   107.60
2001.92    0.430   106.98
2002.92    0.421   106.34
2003.92    0.412   105.67
2004.92    0.402   104.96
2005.92    0.392   104.22
2006.92    0.382   103.44
2007.92    0.371   102.62
2008.92    0.359   101.74
2009.92    0.348   100.81
2010.92    0.335    99.81
2011.92    0.322    98.73
2012.92    0.309    97.55
2013.92    0.295    96.27
2014.92    0.280    94.85
2015.92    0.264    93.27
2016.92    0.248    91.50
2017.92    0.231    89.46
2018.92    0.213    87.10
2019.92    0.195    84.29
2020.92    0.175    80.86
2021.92    0.154    76.52
2022.92    0.132    70.78
2023.92    0.109    62.66
2024.92    0.085    50.09
2025.92    0.063    28.14
2026.92    0.047   347.53
2027.92    0.043   288.75
2028.92    0.050   231.70
2029.92    0.072   198.74
2030.92    0.097   182.01
2031.92    0.122   172.20
2032.92    0.146   165.66
2033.92    0.168   160.91
2034.92    0.189   157.25
2035.92    0.209   154.31
2036.92    0.228   151.86
2037.92    0.246   149.78
2038.92    0.263   147.97
2039.92    0.279   146.38
2040.92    0.294   144.95
2041.92    0.309   143.67
2042.92    0.322   142.49
2043.92    0.336   141.41
2044.92    0.348   140.42
2045.92    0.361   139.49
2046.92    0.372   138.62
2047.92    0.383   137.80
2048.92    0.394   137.03
2049.92    0.404   136.30
2050.92    0.414   135.60
2051.92    0.424   134.93
2052.92    0.433   134.30
2053.92    0.441   133.68
2054.92    0.449   133.10
2055.92    0.457   132.53
2056.92    0.465   131.98
2057.92    0.472   131.45
2058.92    0.479   130.93
2059.92    0.485   130.43
2060.92    0.491   129.94
2061.92    0.497   129.46
2062.92    0.503   128.99
2063.92    0.508   128.53
2064.92    0.513   128.09
2065.92    0.518   127.65
2066.92    0.522   127.21
2067.92    0.526   126.79
2068.92    0.530   126.37
2069.92    0.533   125.96
2070.92    0.537   125.55
2071.92    0.540   125.15
2072.92    0.542   124.75
2073.92    0.545   124.35
2074.92    0.547   123.96
2075.92    0.549   123.57
2076.92    0.551   123.19
2077.92    0.552   122.80
2078.92    0.554   122.42
2079.92    0.555   122.04
2080.92    0.555   121.66

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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.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 18:13:45