Double Star Calculator - Orbit

Orbital Elements for STT74

WDS:	STT74	WDS ID/Discoverer
P:	110.090	Orbital period (years)
a:	0.3332	Semi-major axis (arcseconds)
i:	108.8	Inclination (degrees)
Ω:	111.9	Longitude of ascending node (degrees)
T:	1996.830	Epoch of periastron passage (year)
e:	0.905	Eccentricity
ω:	17.0	Longitude of periastron (degrees)
Start-Year:	1969.955	Year
End-Year:	2080.045	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT74
Position:	041216.47+093900.5	Epoch-2000 right ascension and declination
WDS-ID:	04123+0939	WDS designation
Discoverer Code:	STT74	Discover designation and components
ADS number:	3053	Aitken Double Star catalog
HD number:	26547	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	8.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2024d	Reference

Double Star Orbit for STT74

WDS 6th Orbit including measures of STT74

-- 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 STT74

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.541   289.89
--------------------------
1969.95    0.462   281.65
1970.95    0.451   281.41
1971.95    0.441   281.16
1972.95    0.430   280.90
1973.95    0.419   280.62
1974.95    0.407   280.33
1975.95    0.395   280.02
1976.95    0.382   279.69
1977.95    0.369   279.34
1978.95    0.355   278.96
1979.95    0.341   278.55
1980.95    0.326   278.10
1981.95    0.311   277.61
1982.95    0.295   277.07
1983.95    0.278   276.46
1984.95    0.261   275.78
1985.95    0.243   274.99
1986.95    0.224   274.08
1987.95    0.204   272.99
1988.95    0.183   271.65
1989.95    0.161   269.96
1990.95    0.137   267.71
1991.95    0.113   264.50
1992.95    0.086   259.40
1993.95    0.059   249.67
1994.95    0.033   223.72
1995.95    0.026   152.63
1996.95    0.027    98.75
1997.95    0.033   328.40
1998.95    0.078   309.67
1999.95    0.117   304.31
2000.95    0.151   301.52
2001.95    0.182   299.72
2002.95    0.210   298.42
2003.95    0.235   297.41
2004.95    0.259   296.60
2005.95    0.280   295.91
2006.95    0.301   295.32
2007.95    0.320   294.81
2008.95    0.338   294.35
2009.95    0.355   293.93
2010.95    0.372   293.56
2011.95    0.387   293.21
2012.95    0.402   292.89
2013.95    0.415   292.59
2014.95    0.429   292.31
2015.95    0.441   292.05
2016.95    0.453   291.80
2017.95    0.464   291.56
2018.95    0.475   291.34
2019.95    0.485   291.12
2020.95    0.495   290.91
2021.95    0.504   290.72
2022.95    0.513   290.52
2023.95    0.521   290.34
2024.95    0.529   290.16
2025.95    0.537   289.98
2026.95    0.544   289.81
2027.95    0.550   289.64
2028.95    0.557   289.48
2029.95    0.563   289.32
2030.95    0.568   289.17
2031.95    0.573   289.01
2032.95    0.578   288.86
2033.95    0.583   288.72
2034.95    0.587   288.57
2035.95    0.591   288.43
2036.95    0.594   288.29
2037.95    0.597   288.15
2038.95    0.600   288.01
2039.95    0.603   287.87
2040.95    0.605   287.73
2041.95    0.607   287.60
2042.95    0.608   287.46
2043.95    0.610   287.33
2044.95    0.611   287.19
2045.95    0.611   287.06
2046.95    0.612   286.93
2047.95    0.612   286.79
2048.95    0.612   286.66
2049.95    0.612   286.53
2050.95    0.611   286.40
2051.95    0.610   286.26
2052.95    0.609   286.13
2053.95    0.607   285.99
2054.95    0.605   285.86
2055.95    0.603   285.72
2056.95    0.601   285.58
2057.95    0.598   285.45
2058.95    0.595   285.31
2059.95    0.592   285.16
2060.95    0.588   285.02
2061.95    0.584   284.88
2062.95    0.580   284.73
2063.95    0.576   284.58
2064.95    0.571   284.43
2065.95    0.566   284.28
2066.95    0.561   284.12
2067.95    0.555   283.96
2068.95    0.549   283.80
2069.95    0.543   283.63
2070.95    0.536   283.46
2071.95    0.530   283.28
2072.95    0.522   283.10
2073.95    0.515   282.92
2074.95    0.507   282.73
2075.95    0.499   282.53
2076.95    0.490   282.33
2077.95    0.481   282.12
2078.95    0.472   281.90
2079.95    0.462   281.67

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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 15:18:43