Double Star Calculator - Orbit

Orbital Elements for STT80
WDS: STT80 WDS ID/Discoverer
P: 394.000 Orbital period (years)
a: 0.522 Semi-major axis (arcseconds)
i: 106.7 Inclination (degrees)
Ω: 13.9 Longitude of ascending node (degrees)
T: 2181.000 Epoch of periastron passage (year)
e: 0.52 Eccentricity
ω: 67.7 Longitude of periastron (degrees)
Start-Year: 1828.0 Year
End-Year: 2222.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT80
Position: 042335.82+422540.4 Epoch-2000 right ascension and declination
WDS-ID: 04236+4226 WDS designation
Discoverer Code: STT80 Discover designation and components
ADS number: 3172 Aitken Double Star catalog
HD number: 27650 HD catalog number
Hipparcos number: 20498 Hipparcos catalog number
V1: 6.38 Magnitude of the primary
V2: 8.41 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: Zir2014a Reference

Double Star Orbit for STT80



WDS 6th Orbit including measures of STT80

-- 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 STT80
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.241   128.83
--------------------------
1828.00    0.390   198.58
1829.00    0.397   198.18
1830.00    0.404   197.80
1831.00    0.411   197.43
1832.00    0.417   197.08
1833.00    0.424   196.73
1834.00    0.430   196.39
1835.00    0.436   196.07
1836.00    0.441   195.75
1837.00    0.447   195.44
1838.00    0.453   195.14
1839.00    0.458   194.84
1840.00    0.463   194.56
1841.00    0.468   194.27
1842.00    0.473   194.00
1843.00    0.477   193.73
1844.00    0.482   193.46
1845.00    0.486   193.20
1846.00    0.491   192.94
1847.00    0.495   192.69
1848.00    0.499   192.45
1849.00    0.502   192.20
1850.00    0.506   191.96
1851.00    0.510   191.72
1852.00    0.513   191.49
1853.00    0.516   191.26
1854.00    0.520   191.03
1855.00    0.523   190.81
1856.00    0.526   190.58
1857.00    0.528   190.36
1858.00    0.531   190.15
1859.00    0.534   189.93
1860.00    0.536   189.72
1861.00    0.539   189.51
1862.00    0.541   189.30
1863.00    0.543   189.09
1864.00    0.545   188.88
1865.00    0.547   188.68
1866.00    0.549   188.47
1867.00    0.551   188.27
1868.00    0.552   188.07
1869.00    0.554   187.87
1870.00    0.556   187.67
1871.00    0.557   187.48
1872.00    0.558   187.28
1873.00    0.559   187.08
1874.00    0.561   186.89
1875.00    0.562   186.69
1876.00    0.563   186.50
1877.00    0.563   186.31
1878.00    0.564   186.12
1879.00    0.565   185.92
1880.00    0.566   185.73
1881.00    0.566   185.54
1882.00    0.567   185.35
1883.00    0.567   185.16
1884.00    0.567   184.97
1885.00    0.568   184.78
1886.00    0.568   184.59
1887.00    0.568   184.40
1888.00    0.568   184.21
1889.00    0.568   184.02
1890.00    0.568   183.83
1891.00    0.568   183.65
1892.00    0.568   183.46
1893.00    0.567   183.27
1894.00    0.567   183.08
1895.00    0.567   182.89
1896.00    0.566   182.70
1897.00    0.566   182.51
1898.00    0.565   182.31
1899.00    0.565   182.12
1900.00    0.564   181.93
1901.00    0.563   181.74
1902.00    0.562   181.55
1903.00    0.561   181.35
1904.00    0.561   181.16
1905.00    0.560   180.96
1906.00    0.559   180.77
1907.00    0.557   180.57
1908.00    0.556   180.37
1909.00    0.555   180.18
1910.00    0.554   179.98
1911.00    0.553   179.78
1912.00    0.551   179.58
1913.00    0.550   179.38
1914.00    0.549   179.17
1915.00    0.547   178.97
1916.00    0.546   178.76
1917.00    0.544   178.56
1918.00    0.542   178.35
1919.00    0.541   178.14
1920.00    0.539   177.93
1921.00    0.537   177.72
1922.00    0.536   177.51
1923.00    0.534   177.30
1924.00    0.532   177.08
1925.00    0.530   176.86
1926.00    0.528   176.65
1927.00    0.526   176.43
1928.00    0.524   176.20
1929.00    0.522   175.98
1930.00    0.520   175.76
1931.00    0.518   175.53
1932.00    0.516   175.30
1933.00    0.514   175.07
1934.00    0.511   174.84
1935.00    0.509   174.60
1936.00    0.507   174.37
1937.00    0.504   174.13
1938.00    0.502   173.88
1939.00    0.500   173.64
1940.00    0.497   173.40
1941.00    0.495   173.15
1942.00    0.492   172.90
1943.00    0.490   172.64
1944.00    0.487   172.39
1945.00    0.485   172.13
1946.00    0.482   171.87
1947.00    0.479   171.60
1948.00    0.477   171.33
1949.00    0.474   171.06
1950.00    0.471   170.79
1951.00    0.469   170.51
1952.00    0.466   170.23
1953.00    0.463   169.95
1954.00    0.460   169.66
1955.00    0.457   169.37
1956.00    0.455   169.08
1957.00    0.452   168.78
1958.00    0.449   168.48
1959.00    0.446   168.17
1960.00    0.443   167.86
1961.00    0.440   167.55
1962.00    0.437   167.23
1963.00    0.434   166.91
1964.00    0.431   166.58
1965.00    0.428   166.25
1966.00    0.425   165.92
1967.00    0.422   165.58
1968.00    0.419   165.23
1969.00    0.416   164.88
1970.00    0.412   164.52
1971.00    0.409   164.16
1972.00    0.406   163.79
1973.00    0.403   163.42
1974.00    0.400   163.04
1975.00    0.397   162.65
1976.00    0.393   162.26
1977.00    0.390   161.86
1978.00    0.387   161.46
1979.00    0.384   161.05
1980.00    0.381   160.63
1981.00    0.377   160.20
1982.00    0.374   159.77
1983.00    0.371   159.33
1984.00    0.368   158.88
1985.00    0.364   158.43
1986.00    0.361   157.96
1987.00    0.358   157.49
1988.00    0.355   157.01
1989.00    0.351   156.52
1990.00    0.348   156.02
1991.00    0.345   155.51
1992.00    0.342   154.99
1993.00    0.338   154.46
1994.00    0.335   153.92
1995.00    0.332   153.37
1996.00    0.329   152.81
1997.00    0.325   152.24
1998.00    0.322   151.66
1999.00    0.319   151.06
2000.00    0.316   150.46
2001.00    0.313   149.84
2002.00    0.309   149.20
2003.00    0.306   148.56
2004.00    0.303   147.90
2005.00    0.300   147.23
2006.00    0.297   146.54
2007.00    0.294   145.84
2008.00    0.291   145.13
2009.00    0.288   144.40
2010.00    0.285   143.65
2011.00    0.282   142.89
2012.00    0.279   142.11
2013.00    0.276   141.32
2014.00    0.273   140.51
2015.00    0.270   139.68
2016.00    0.267   138.83
2017.00    0.265   137.97
2018.00    0.262   137.09
2019.00    0.259   136.19
2020.00    0.257   135.27
2021.00    0.254   134.33
2022.00    0.251   133.37
2023.00    0.249   132.40
2024.00    0.247   131.40
2025.00    0.244   130.39
2026.00    0.242   129.35
2027.00    0.240   128.30
2028.00    0.237   127.22
2029.00    0.235   126.13
2030.00    0.233   125.01
2031.00    0.231   123.88
2032.00    0.229   122.72
2033.00    0.227   121.55
2034.00    0.226   120.36
2035.00    0.224   119.15
2036.00    0.222   117.93
2037.00    0.221   116.68
2038.00    0.219   115.42
2039.00    0.218   114.14
2040.00    0.217   112.85
2041.00    0.216   111.54
2042.00    0.215   110.22
2043.00    0.214   108.89
2044.00    0.213   107.54
2045.00    0.212   106.19
2046.00    0.211   104.82
2047.00    0.211   103.45
2048.00    0.210   102.07
2049.00    0.210   100.69
2050.00    0.210    99.30
2051.00    0.209    97.91
2052.00    0.209    96.51
2053.00    0.209    95.12
2054.00    0.210    93.73
2055.00    0.210    92.34
2056.00    0.210    90.96
2057.00    0.211    89.58
2058.00    0.211    88.20
2059.00    0.212    86.84
2060.00    0.213    85.48
2061.00    0.214    84.14
2062.00    0.214    82.80
2063.00    0.216    81.48
2064.00    0.217    80.17
2065.00    0.218    78.88
2066.00    0.219    77.60
2067.00    0.221    76.33
2068.00    0.222    75.09
2069.00    0.224    73.86
2070.00    0.225    72.64
2071.00    0.227    71.45
2072.00    0.229    70.27
2073.00    0.231    69.11
2074.00    0.232    67.97
2075.00    0.234    66.85
2076.00    0.236    65.75
2077.00    0.239    64.66
2078.00    0.241    63.60
2079.00    0.243    62.55
2080.00    0.245    61.53
2081.00    0.247    60.52
2082.00    0.250    59.53
2083.00    0.252    58.56
2084.00    0.254    57.61
2085.00    0.257    56.67
2086.00    0.259    55.75
2087.00    0.262    54.85
2088.00    0.264    53.97
2089.00    0.267    53.10
2090.00    0.269    52.26
2091.00    0.272    51.42
2092.00    0.275    50.60
2093.00    0.277    49.80
2094.00    0.280    49.01
2095.00    0.283    48.24
2096.00    0.285    47.48
2097.00    0.288    46.74
2098.00    0.290    46.01
2099.00    0.293    45.29
2100.00    0.296    44.58
2101.00    0.298    43.89
2102.00    0.301    43.21
2103.00    0.303    42.54
2104.00    0.306    41.88
2105.00    0.308    41.23
2106.00    0.311    40.59
2107.00    0.313    39.97
2108.00    0.316    39.35
2109.00    0.318    38.74
2110.00    0.321    38.14
2111.00    0.323    37.55
2112.00    0.325    36.97
2113.00    0.328    36.40
2114.00    0.330    35.83
2115.00    0.332    35.28
2116.00    0.334    34.73
2117.00    0.336    34.18
2118.00    0.338    33.64
2119.00    0.340    33.11
2120.00    0.342    32.59
2121.00    0.344    32.07
2122.00    0.346    31.55
2123.00    0.347    31.04
2124.00    0.349    30.54
2125.00    0.350    30.04
2126.00    0.352    29.54
2127.00    0.353    29.05
2128.00    0.354    28.56
2129.00    0.355    28.08
2130.00    0.356    27.59
2131.00    0.357    27.11
2132.00    0.358    26.63
2133.00    0.358    26.16
2134.00    0.359    25.68
2135.00    0.359    25.21
2136.00    0.360    24.74
2137.00    0.360    24.26
2138.00    0.360    23.79
2139.00    0.359    23.32
2140.00    0.359    22.85
2141.00    0.358    22.37
2142.00    0.358    21.89
2143.00    0.357    21.41
2144.00    0.356    20.93
2145.00    0.354    20.45
2146.00    0.353    19.96
2147.00    0.351    19.47
2148.00    0.349    18.97
2149.00    0.347    18.46
2150.00    0.344    17.95
2151.00    0.342    17.43
2152.00    0.339    16.90
2153.00    0.335    16.37
2154.00    0.332    15.82
2155.00    0.328    15.26
2156.00    0.324    14.68
2157.00    0.320    14.09
2158.00    0.315    13.48
2159.00    0.310    12.86
2160.00    0.304    12.21
2161.00    0.299    11.54
2162.00    0.292    10.84
2163.00    0.286    10.11
2164.00    0.279     9.34
2165.00    0.272     8.54
2166.00    0.264     7.69
2167.00    0.256     6.79
2168.00    0.248     5.83
2169.00    0.240     4.80
2170.00    0.230     3.69
2171.00    0.221     2.49
2172.00    0.211     1.19
2173.00    0.201   359.75
2174.00    0.191   358.17
2175.00    0.181   356.40
2176.00    0.170   354.41
2177.00    0.159   352.15
2178.00    0.148   349.56
2179.00    0.137   346.56
2180.00    0.127   343.04
2181.00    0.116   338.88
2182.00    0.106   333.92
2183.00    0.097   327.95
2184.00    0.088   320.80
2185.00    0.082   312.31
2186.00    0.077   302.51
2187.00    0.074   291.72
2188.00    0.074   280.54
2189.00    0.077   269.75
2190.00    0.082   259.98
2191.00    0.089   251.52
2192.00    0.097   244.40
2193.00    0.106   238.47
2194.00    0.117   233.54
2195.00    0.127   229.43
2196.00    0.138   225.95
2197.00    0.150   223.00
2198.00    0.161   220.46
2199.00    0.172   218.26
2200.00    0.184   216.32
2201.00    0.195   214.62
2202.00    0.206   213.10
2203.00    0.217   211.73
2204.00    0.228   210.50
2205.00    0.239   209.38
2206.00    0.249   208.35
2207.00    0.260   207.41
2208.00    0.270   206.53
2209.00    0.280   205.72
2210.00    0.290   204.97
2211.00    0.299   204.27
2212.00    0.308   203.60
2213.00    0.318   202.98
2214.00    0.326   202.39
2215.00    0.335   201.83
2216.00    0.344   201.30
2217.00    0.352   200.80
2218.00    0.360   200.31
2219.00    0.368   199.85
2220.00    0.375   199.41
2221.00    0.383   198.98






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 15:22:41



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