Double Star Calculator - Orbit

Orbital Elements for STT277AB
WDS: STT277AB WDS ID/Discoverer
P: 337.200 Orbital period (years)
a: 0.548 Semi-major axis (arcseconds)
i: 65.6 Inclination (degrees)
Ω: 70.4 Longitude of ascending node (degrees)
T: 2012.290 Epoch of periastron passage (year)
e: 0.858 Eccentricity
ω: 88.1 Longitude of periastron (degrees)
Start-Year: 1856.4 Year
End-Year: 2193.6 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT277AB
Position: 141226.68+284302.3 Epoch-2000 right ascension and declination
WDS-ID: 14124+2843 WDS designation
Discoverer Code: STT277AB Discover designation and components
ADS number: 9158 Aitken Double Star catalog
HD number: 124346 HD catalog number
Hipparcos number: 69399 Hipparcos catalog number
V1: 8.73 Magnitude of the primary
V2: 8.61 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1997 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Ole2002d Reference

Double Star Orbit for STT277AB



WDS 6th Orbit including measures of STT277AB

-- 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 STT277AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.247   265.43
--------------------------
1856.40    0.419   340.70
1857.40    0.419   341.09
1858.40    0.419   341.48
1859.40    0.418   341.86
1860.40    0.418   342.25
1861.40    0.418   342.64
1862.40    0.418   343.03
1863.40    0.417   343.42
1864.40    0.417   343.81
1865.40    0.417   344.21
1866.40    0.416   344.60
1867.40    0.416   344.99
1868.40    0.416   345.38
1869.40    0.416   345.78
1870.40    0.415   346.17
1871.40    0.415   346.57
1872.40    0.415   346.96
1873.40    0.414   347.36
1874.40    0.414   347.75
1875.40    0.414   348.15
1876.40    0.414   348.55
1877.40    0.413   348.95
1878.40    0.413   349.34
1879.40    0.413   349.74
1880.40    0.412   350.14
1881.40    0.412   350.54
1882.40    0.412   350.95
1883.40    0.411   351.35
1884.40    0.411   351.75
1885.40    0.411   352.15
1886.40    0.410   352.56
1887.40    0.410   352.96
1888.40    0.409   353.37
1889.40    0.409   353.77
1890.40    0.409   354.18
1891.40    0.408   354.59
1892.40    0.408   355.00
1893.40    0.408   355.41
1894.40    0.407   355.82
1895.40    0.407   356.23
1896.40    0.406   356.64
1897.40    0.406   357.05
1898.40    0.405   357.46
1899.40    0.405   357.88
1900.40    0.405   358.29
1901.40    0.404   358.71
1902.40    0.404   359.13
1903.40    0.403   359.54
1904.40    0.403   359.96
1905.40    0.402     0.38
1906.40    0.402     0.80
1907.40    0.401     1.23
1908.40    0.401     1.65
1909.40    0.400     2.07
1910.40    0.400     2.50
1911.40    0.399     2.92
1912.40    0.399     3.35
1913.40    0.398     3.78
1914.40    0.398     4.21
1915.40    0.397     4.64
1916.40    0.397     5.07
1917.40    0.396     5.50
1918.40    0.395     5.94
1919.40    0.395     6.37
1920.40    0.394     6.81
1921.40    0.394     7.25
1922.40    0.393     7.69
1923.40    0.392     8.13
1924.40    0.392     8.57
1925.40    0.391     9.02
1926.40    0.390     9.46
1927.40    0.390     9.91
1928.40    0.389    10.36
1929.40    0.388    10.81
1930.40    0.388    11.26
1931.40    0.387    11.71
1932.40    0.386    12.17
1933.40    0.385    12.63
1934.40    0.385    13.08
1935.40    0.384    13.55
1936.40    0.383    14.01
1937.40    0.382    14.47
1938.40    0.381    14.94
1939.40    0.380    15.41
1940.40    0.379    15.88
1941.40    0.379    16.35
1942.40    0.378    16.83
1943.40    0.377    17.31
1944.40    0.376    17.79
1945.40    0.375    18.27
1946.40    0.374    18.76
1947.40    0.373    19.25
1948.40    0.372    19.74
1949.40    0.370    20.23
1950.40    0.369    20.73
1951.40    0.368    21.23
1952.40    0.367    21.74
1953.40    0.366    22.24
1954.40    0.364    22.75
1955.40    0.363    23.27
1956.40    0.362    23.78
1957.40    0.361    24.31
1958.40    0.359    24.83
1959.40    0.358    25.36
1960.40    0.356    25.89
1961.40    0.355    26.43
1962.40    0.353    26.98
1963.40    0.352    27.52
1964.40    0.350    28.08
1965.40    0.348    28.63
1966.40    0.347    29.20
1967.40    0.345    29.77
1968.40    0.343    30.34
1969.40    0.341    30.92
1970.40    0.339    31.51
1971.40    0.337    32.11
1972.40    0.335    32.71
1973.40    0.333    33.32
1974.40    0.331    33.94
1975.40    0.328    34.57
1976.40    0.326    35.20
1977.40    0.323    35.85
1978.40    0.321    36.50
1979.40    0.318    37.17
1980.40    0.315    37.85
1981.40    0.312    38.54
1982.40    0.309    39.24
1983.40    0.306    39.96
1984.40    0.303    40.69
1985.40    0.300    41.44
1986.40    0.296    42.21
1987.40    0.292    42.99
1988.40    0.289    43.80
1989.40    0.284    44.63
1990.40    0.280    45.48
1991.40    0.276    46.36
1992.40    0.271    47.27
1993.40    0.266    48.22
1994.40    0.261    49.20
1995.40    0.255    50.22
1996.40    0.249    51.29
1997.40    0.243    52.42
1998.40    0.236    53.60
1999.40    0.228    54.87
2000.40    0.221    56.22
2001.40    0.212    57.67
2002.40    0.203    59.25
2003.40    0.192    61.00
2004.40    0.181    62.95
2005.40    0.168    65.18
2006.40    0.154    67.81
2007.40    0.138    71.01
2008.40    0.119    75.16
2009.40    0.097    81.03
2010.40    0.072    90.71
2011.40    0.046   111.33
2012.40    0.032   163.04
2013.40    0.048   211.48
2014.40    0.075   230.40
2015.40    0.100   239.48
2016.40    0.122   245.05
2017.40    0.141   248.99
2018.40    0.158   252.03
2019.40    0.173   254.51
2020.40    0.187   256.61
2021.40    0.199   258.45
2022.40    0.210   260.08
2023.40    0.220   261.55
2024.40    0.229   262.90
2025.40    0.238   264.15
2026.40    0.246   265.31
2027.40    0.253   266.41
2028.40    0.260   267.44
2029.40    0.267   268.41
2030.40    0.273   269.34
2031.40    0.279   270.24
2032.40    0.285   271.09
2033.40    0.290   271.91
2034.40    0.295   272.71
2035.40    0.300   273.47
2036.40    0.305   274.22
2037.40    0.309   274.94
2038.40    0.313   275.64
2039.40    0.317   276.33
2040.40    0.321   277.00
2041.40    0.325   277.65
2042.40    0.328   278.29
2043.40    0.332   278.91
2044.40    0.335   279.52
2045.40    0.338   280.12
2046.40    0.341   280.71
2047.40    0.344   281.29
2048.40    0.347   281.86
2049.40    0.350   282.42
2050.40    0.352   282.97
2051.40    0.355   283.52
2052.40    0.357   284.06
2053.40    0.360   284.58
2054.40    0.362   285.11
2055.40    0.364   285.62
2056.40    0.366   286.13
2057.40    0.368   286.64
2058.40    0.370   287.14
2059.40    0.372   287.63
2060.40    0.374   288.12
2061.40    0.376   288.60
2062.40    0.378   289.08
2063.40    0.379   289.56
2064.40    0.381   290.03
2065.40    0.383   290.50
2066.40    0.384   290.96
2067.40    0.386   291.42
2068.40    0.387   291.87
2069.40    0.388   292.33
2070.40    0.390   292.77
2071.40    0.391   293.22
2072.40    0.392   293.66
2073.40    0.394   294.10
2074.40    0.395   294.54
2075.40    0.396   294.98
2076.40    0.397   295.41
2077.40    0.398   295.84
2078.40    0.399   296.27
2079.40    0.400   296.69
2080.40    0.401   297.12
2081.40    0.402   297.54
2082.40    0.403   297.96
2083.40    0.404   298.37
2084.40    0.405   298.79
2085.40    0.406   299.20
2086.40    0.407   299.62
2087.40    0.408   300.03
2088.40    0.408   300.44
2089.40    0.409   300.84
2090.40    0.410   301.25
2091.40    0.410   301.65
2092.40    0.411   302.06
2093.40    0.412   302.46
2094.40    0.412   302.86
2095.40    0.413   303.26
2096.40    0.414   303.66
2097.40    0.414   304.05
2098.40    0.415   304.45
2099.40    0.415   304.84
2100.40    0.416   305.24
2101.40    0.416   305.63
2102.40    0.417   306.02
2103.40    0.417   306.41
2104.40    0.418   306.80
2105.40    0.418   307.19
2106.40    0.419   307.58
2107.40    0.419   307.97
2108.40    0.419   308.36
2109.40    0.420   308.74
2110.40    0.420   309.13
2111.40    0.420   309.51
2112.40    0.421   309.90
2113.40    0.421   310.28
2114.40    0.421   310.66
2115.40    0.422   311.05
2116.40    0.422   311.43
2117.40    0.422   311.81
2118.40    0.422   312.19
2119.40    0.423   312.57
2120.40    0.423   312.95
2121.40    0.423   313.33
2122.40    0.423   313.71
2123.40    0.424   314.09
2124.40    0.424   314.47
2125.40    0.424   314.85
2126.40    0.424   315.23
2127.40    0.424   315.61
2128.40    0.424   315.99
2129.40    0.424   316.36
2130.40    0.425   316.74
2131.40    0.425   317.12
2132.40    0.425   317.50
2133.40    0.425   317.87
2134.40    0.425   318.25
2135.40    0.425   318.63
2136.40    0.425   319.00
2137.40    0.425   319.38
2138.40    0.425   319.75
2139.40    0.425   320.13
2140.40    0.425   320.51
2141.40    0.425   320.88
2142.40    0.425   321.26
2143.40    0.425   321.63
2144.40    0.425   322.01
2145.40    0.425   322.39
2146.40    0.425   322.76
2147.40    0.425   323.14
2148.40    0.425   323.51
2149.40    0.425   323.89
2150.40    0.425   324.27
2151.40    0.425   324.64
2152.40    0.425   325.02
2153.40    0.425   325.39
2154.40    0.425   325.77
2155.40    0.425   326.15
2156.40    0.425   326.52
2157.40    0.425   326.90
2158.40    0.425   327.28
2159.40    0.425   327.65
2160.40    0.425   328.03
2161.40    0.425   328.41
2162.40    0.424   328.79
2163.40    0.424   329.16
2164.40    0.424   329.54
2165.40    0.424   329.92
2166.40    0.424   330.30
2167.40    0.424   330.68
2168.40    0.424   331.06
2169.40    0.424   331.43
2170.40    0.423   331.81
2171.40    0.423   332.19
2172.40    0.423   332.57
2173.40    0.423   332.95
2174.40    0.423   333.33
2175.40    0.423   333.71
2176.40    0.423   334.09
2177.40    0.422   334.48
2178.40    0.422   334.86
2179.40    0.422   335.24
2180.40    0.422   335.62
2181.40    0.422   336.00
2182.40    0.421   336.39
2183.40    0.421   336.77
2184.40    0.421   337.15
2185.40    0.421   337.54
2186.40    0.421   337.92
2187.40    0.420   338.31
2188.40    0.420   338.69
2189.40    0.420   339.08
2190.40    0.420   339.46
2191.40    0.420   339.85
2192.40    0.419   340.24
2193.40    0.419   340.62






Disclaimer
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 17:03:21



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