Double Star Calculator - Orbit

Orbital Elements for STT82AB
WDS: STT82AB WDS ID/Discoverer
P: 246.900 Orbital period (years)
a: 1.17 Semi-major axis (arcseconds)
i: 137.8 Inclination (degrees)
Ω: 197.0 Longitude of ascending node (degrees)
T: 1892.780 Epoch of periastron passage (year)
e: 0.277 Eccentricity
ω: 56.7 Longitude of periastron (degrees)
Start-Year: 1901.55 Year
End-Year: 2148.45 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT82AB
Position: 042244.10+150322.1 Epoch-2000 right ascension and declination
WDS-ID: 04227+1503 WDS designation
Discoverer Code: STT82AB Discover designation and components
ADS number: 3169 Aitken Double Star catalog
HD number: 27691 HD catalog number
Hipparcos number: 20440 Hipparcos catalog number
V1: 7.31 Magnitude of the primary
V2: 8.63 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: USN2021b Reference

Double Star Orbit for STT82AB



WDS 6th Orbit including measures of STT82AB

-- 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 STT82AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.177   318.54
--------------------------
1901.55    0.646   120.48
1902.55    0.645   117.07
1903.55    0.645   113.66
1904.55    0.647   110.25
1905.55    0.650   106.87
1906.55    0.654   103.53
1907.55    0.659   100.24
1908.55    0.666    97.00
1909.55    0.674    93.83
1910.55    0.682    90.74
1911.55    0.692    87.73
1912.55    0.703    84.81
1913.55    0.714    81.97
1914.55    0.726    79.23
1915.55    0.739    76.58
1916.55    0.752    74.03
1917.55    0.766    71.56
1918.55    0.781    69.19
1919.55    0.795    66.90
1920.55    0.810    64.70
1921.55    0.826    62.57
1922.55    0.841    60.53
1923.55    0.857    58.56
1924.55    0.873    56.66
1925.55    0.889    54.83
1926.55    0.904    53.06
1927.55    0.920    51.35
1928.55    0.936    49.70
1929.55    0.951    48.10
1930.55    0.967    46.56
1931.55    0.982    45.06
1932.55    0.997    43.61
1933.55    1.012    42.20
1934.55    1.027    40.84
1935.55    1.041    39.51
1936.55    1.055    38.21
1937.55    1.069    36.95
1938.55    1.083    35.73
1939.55    1.096    34.53
1940.55    1.109    33.36
1941.55    1.121    32.22
1942.55    1.134    31.10
1943.55    1.146    30.01
1944.55    1.157    28.93
1945.55    1.169    27.88
1946.55    1.180    26.85
1947.55    1.190    25.84
1948.55    1.201    24.85
1949.55    1.211    23.87
1950.55    1.220    22.91
1951.55    1.229    21.96
1952.55    1.238    21.03
1953.55    1.247    20.11
1954.55    1.255    19.20
1955.55    1.263    18.31
1956.55    1.270    17.42
1957.55    1.278    16.55
1958.55    1.284    15.68
1959.55    1.291    14.82
1960.55    1.297    13.97
1961.55    1.303    13.13
1962.55    1.308    12.30
1963.55    1.314    11.47
1964.55    1.318    10.65
1965.55    1.323     9.84
1966.55    1.327     9.03
1967.55    1.331     8.23
1968.55    1.335     7.43
1969.55    1.338     6.63
1970.55    1.341     5.84
1971.55    1.344     5.05
1972.55    1.346     4.26
1973.55    1.348     3.48
1974.55    1.350     2.70
1975.55    1.351     1.92
1976.55    1.353     1.14
1977.55    1.354     0.37
1978.55    1.354   359.59
1979.55    1.355   358.82
1980.55    1.355   358.05
1981.55    1.355   357.27
1982.55    1.355   356.50
1983.55    1.354   355.72
1984.55    1.354   354.95
1985.55    1.353   354.17
1986.55    1.351   353.40
1987.55    1.350   352.62
1988.55    1.348   351.84
1989.55    1.346   351.05
1990.55    1.344   350.27
1991.55    1.342   349.48
1992.55    1.340   348.69
1993.55    1.337   347.90
1994.55    1.334   347.10
1995.55    1.331   346.30
1996.55    1.328   345.50
1997.55    1.324   344.69
1998.55    1.321   343.88
1999.55    1.317   343.06
2000.55    1.313   342.24
2001.55    1.309   341.41
2002.55    1.305   340.58
2003.55    1.301   339.74
2004.55    1.296   338.90
2005.55    1.292   338.05
2006.55    1.287   337.20
2007.55    1.282   336.34
2008.55    1.277   335.47
2009.55    1.272   334.59
2010.55    1.267   333.71
2011.55    1.262   332.82
2012.55    1.257   331.93
2013.55    1.251   331.02
2014.55    1.246   330.11
2015.55    1.240   329.19
2016.55    1.235   328.27
2017.55    1.229   327.33
2018.55    1.223   326.38
2019.55    1.217   325.43
2020.55    1.212   324.47
2021.55    1.206   323.49
2022.55    1.200   322.51
2023.55    1.194   321.52
2024.55    1.188   320.52
2025.55    1.182   319.51
2026.55    1.177   318.49
2027.55    1.171   317.46
2028.55    1.165   316.41
2029.55    1.159   315.36
2030.55    1.153   314.30
2031.55    1.147   313.23
2032.55    1.142   312.14
2033.55    1.136   311.05
2034.55    1.130   309.94
2035.55    1.125   308.82
2036.55    1.119   307.69
2037.55    1.114   306.55
2038.55    1.108   305.40
2039.55    1.103   304.24
2040.55    1.098   303.07
2041.55    1.093   301.88
2042.55    1.088   300.69
2043.55    1.083   299.48
2044.55    1.078   298.26
2045.55    1.073   297.04
2046.55    1.069   295.80
2047.55    1.064   294.55
2048.55    1.060   293.29
2049.55    1.056   292.02
2050.55    1.052   290.74
2051.55    1.048   289.45
2052.55    1.044   288.15
2053.55    1.041   286.85
2054.55    1.038   285.53
2055.55    1.034   284.21
2056.55    1.031   282.88
2057.55    1.028   281.54
2058.55    1.026   280.19
2059.55    1.023   278.83
2060.55    1.021   277.47
2061.55    1.018   276.11
2062.55    1.016   274.73
2063.55    1.014   273.36
2064.55    1.013   271.97
2065.55    1.011   270.58
2066.55    1.010   269.19
2067.55    1.008   267.80
2068.55    1.007   266.40
2069.55    1.006   264.99
2070.55    1.005   263.59
2071.55    1.005   262.18
2072.55    1.004   260.77
2073.55    1.004   259.36
2074.55    1.003   257.95
2075.55    1.003   256.54
2076.55    1.003   255.13
2077.55    1.003   253.72
2078.55    1.003   252.30
2079.55    1.003   250.89
2080.55    1.003   249.48
2081.55    1.004   248.07
2082.55    1.004   246.66
2083.55    1.004   245.25
2084.55    1.005   243.84
2085.55    1.005   242.44
2086.55    1.006   241.03
2087.55    1.006   239.63
2088.55    1.006   238.22
2089.55    1.007   236.82
2090.55    1.007   235.42
2091.55    1.007   234.02
2092.55    1.007   232.62
2093.55    1.007   231.22
2094.55    1.007   229.82
2095.55    1.007   228.42
2096.55    1.006   227.01
2097.55    1.006   225.61
2098.55    1.005   224.21
2099.55    1.004   222.80
2100.55    1.003   221.39
2101.55    1.001   219.97
2102.55    1.000   218.55
2103.55    0.998   217.13
2104.55    0.995   215.70
2105.55    0.993   214.26
2106.55    0.990   212.81
2107.55    0.987   211.36
2108.55    0.983   209.89
2109.55    0.979   208.42
2110.55    0.975   206.93
2111.55    0.970   205.43
2112.55    0.965   203.91
2113.55    0.960   202.38
2114.55    0.954   200.82
2115.55    0.947   199.25
2116.55    0.941   197.66
2117.55    0.933   196.04
2118.55    0.926   194.39
2119.55    0.918   192.72
2120.55    0.909   191.02
2121.55    0.900   189.28
2122.55    0.891   187.51
2123.55    0.881   185.70
2124.55    0.871   183.85
2125.55    0.861   181.95
2126.55    0.850   180.01
2127.55    0.839   178.02
2128.55    0.827   175.97
2129.55    0.816   173.86
2130.55    0.804   171.70
2131.55    0.792   169.47
2132.55    0.780   167.17
2133.55    0.768   164.80
2134.55    0.757   162.36
2135.55    0.745   159.83
2136.55    0.733   157.23
2137.55    0.722   154.55
2138.55    0.712   151.79
2139.55    0.701   148.94
2140.55    0.692   146.01
2141.55    0.683   143.00
2142.55    0.674   139.91
2143.55    0.667   136.75
2144.55    0.661   133.53
2145.55    0.655   130.25
2146.55    0.651   126.91
2147.55    0.648   123.54






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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 15:22:31



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