Double Star Calculator - Orbit

Orbital Elements for STT500AB
WDS: STT500AB WDS ID/Discoverer
P: 392.500 Orbital period (years)
a: 1.285 Semi-major axis (arcseconds)
i: 79.3 Inclination (degrees)
Ω: 116.1 Longitude of ascending node (degrees)
T: 2230.228 Epoch of periastron passage (year)
e: 0.92 Eccentricity
ω: 89.4 Longitude of periastron (degrees)
Start-Year: 1828.75 Year
End-Year: 2221.25 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT500AB
Position: 233732.03+442544.5 Epoch-2000 right ascension and declination
WDS-ID: 23375+4426 WDS designation
Discoverer Code: STT500AB Discover designation and components
ADS number: 16877 Aitken Double Star catalog
HD number: 222109 HD catalog number
Hipparcos number: 116582 Hipparcos catalog number
V1: 6.08 Magnitude of the primary
V2: 7.38 Magnitude of the secondary
Equinox: Equinox
Date: 2025 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: Sca2025a Reference

Double Star Orbit for STT500AB



WDS 6th Orbit including measures of STT500AB

-- 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 STT500AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.461    18.97
--------------------------
1828.75    0.366   107.34
1829.75    0.349   108.20
1830.75    0.330   109.16
1831.75    0.308   110.24
1832.75    0.283   111.50
1833.75    0.252   113.04
1834.75    0.213   115.09
1835.75    0.163   118.22
1836.75    0.094   125.20
1837.75    0.019   209.52
1838.75    0.096   287.16
1839.75    0.165   293.93
1840.75    0.215   297.00
1841.75    0.255   298.99
1842.75    0.286   300.50
1843.75    0.313   301.73
1844.75    0.335   302.78
1845.75    0.355   303.70
1846.75    0.373   304.53
1847.75    0.388   305.29
1848.75    0.402   306.00
1849.75    0.415   306.66
1850.75    0.427   307.28
1851.75    0.437   307.87
1852.75    0.447   308.44
1853.75    0.456   308.98
1854.75    0.465   309.50
1855.75    0.472   310.00
1856.75    0.480   310.48
1857.75    0.486   310.96
1858.75    0.493   311.42
1859.75    0.498   311.87
1860.75    0.504   312.30
1861.75    0.509   312.73
1862.75    0.514   313.15
1863.75    0.519   313.57
1864.75    0.523   313.97
1865.75    0.527   314.37
1866.75    0.531   314.77
1867.75    0.534   315.16
1868.75    0.537   315.54
1869.75    0.540   315.92
1870.75    0.543   316.30
1871.75    0.546   316.67
1872.75    0.549   317.04
1873.75    0.551   317.40
1874.75    0.553   317.76
1875.75    0.555   318.12
1876.75    0.557   318.48
1877.75    0.559   318.83
1878.75    0.561   319.18
1879.75    0.563   319.53
1880.75    0.564   319.88
1881.75    0.565   320.22
1882.75    0.567   320.57
1883.75    0.568   320.91
1884.75    0.569   321.25
1885.75    0.570   321.59
1886.75    0.571   321.93
1887.75    0.571   322.27
1888.75    0.572   322.60
1889.75    0.573   322.94
1890.75    0.573   323.28
1891.75    0.574   323.61
1892.75    0.574   323.95
1893.75    0.575   324.28
1894.75    0.575   324.61
1895.75    0.575   324.95
1896.75    0.575   325.28
1897.75    0.575   325.61
1898.75    0.575   325.95
1899.75    0.575   326.28
1900.75    0.575   326.61
1901.75    0.575   326.95
1902.75    0.575   327.28
1903.75    0.575   327.61
1904.75    0.575   327.95
1905.75    0.574   328.28
1906.75    0.574   328.61
1907.75    0.573   328.95
1908.75    0.573   329.28
1909.75    0.573   329.62
1910.75    0.572   329.96
1911.75    0.572   330.29
1912.75    0.571   330.63
1913.75    0.570   330.97
1914.75    0.570   331.31
1915.75    0.569   331.65
1916.75    0.568   331.99
1917.75    0.568   332.33
1918.75    0.567   332.67
1919.75    0.566   333.02
1920.75    0.565   333.36
1921.75    0.565   333.71
1922.75    0.564   334.05
1923.75    0.563   334.40
1924.75    0.562   334.75
1925.75    0.561   335.10
1926.75    0.560   335.45
1927.75    0.559   335.80
1928.75    0.558   336.15
1929.75    0.557   336.51
1930.75    0.556   336.86
1931.75    0.555   337.22
1932.75    0.554   337.58
1933.75    0.553   337.94
1934.75    0.552   338.30
1935.75    0.551   338.66
1936.75    0.550   339.02
1937.75    0.549   339.39
1938.75    0.548   339.76
1939.75    0.547   340.12
1940.75    0.545   340.49
1941.75    0.544   340.87
1942.75    0.543   341.24
1943.75    0.542   341.61
1944.75    0.541   341.99
1945.75    0.540   342.37
1946.75    0.538   342.75
1947.75    0.537   343.13
1948.75    0.536   343.51
1949.75    0.535   343.89
1950.75    0.534   344.28
1951.75    0.532   344.67
1952.75    0.531   345.06
1953.75    0.530   345.45
1954.75    0.529   345.84
1955.75    0.528   346.24
1956.75    0.526   346.63
1957.75    0.525   347.03
1958.75    0.524   347.43
1959.75    0.523   347.84
1960.75    0.521   348.24
1961.75    0.520   348.65
1962.75    0.519   349.06
1963.75    0.518   349.47
1964.75    0.517   349.88
1965.75    0.515   350.29
1966.75    0.514   350.71
1967.75    0.513   351.13
1968.75    0.512   351.55
1969.75    0.510   351.97
1970.75    0.509   352.39
1971.75    0.508   352.82
1972.75    0.507   353.25
1973.75    0.506   353.68
1974.75    0.505   354.11
1975.75    0.503   354.54
1976.75    0.502   354.98
1977.75    0.501   355.42
1978.75    0.500   355.85
1979.75    0.499   356.30
1980.75    0.498   356.74
1981.75    0.497   357.19
1982.75    0.495   357.63
1983.75    0.494   358.08
1984.75    0.493   358.54
1985.75    0.492   358.99
1986.75    0.491   359.45
1987.75    0.490   359.90
1988.75    0.489     0.36
1989.75    0.488     0.83
1990.75    0.487     1.29
1991.75    0.486     1.76
1992.75    0.485     2.22
1993.75    0.484     2.69
1994.75    0.483     3.16
1995.75    0.482     3.64
1996.75    0.481     4.11
1997.75    0.480     4.59
1998.75    0.479     5.07
1999.75    0.478     5.55
2000.75    0.478     6.03
2001.75    0.477     6.51
2002.75    0.476     7.00
2003.75    0.475     7.49
2004.75    0.474     7.98
2005.75    0.473     8.47
2006.75    0.473     8.96
2007.75    0.472     9.45
2008.75    0.471     9.95
2009.75    0.470    10.45
2010.75    0.470    10.95
2011.75    0.469    11.45
2012.75    0.468    11.95
2013.75    0.468    12.45
2014.75    0.467    12.96
2015.75    0.466    13.46
2016.75    0.466    13.97
2017.75    0.465    14.48
2018.75    0.465    14.99
2019.75    0.464    15.50
2020.75    0.464    16.01
2021.75    0.463    16.52
2022.75    0.463    17.04
2023.75    0.462    17.55
2024.75    0.462    18.07
2025.75    0.461    18.59
2026.75    0.461    19.10
2027.75    0.461    19.62
2028.75    0.460    20.14
2029.75    0.460    20.66
2030.75    0.460    21.18
2031.75    0.459    21.71
2032.75    0.459    22.23
2033.75    0.459    22.75
2034.75    0.459    23.28
2035.75    0.458    23.80
2036.75    0.458    24.32
2037.75    0.458    24.85
2038.75    0.458    25.38
2039.75    0.458    25.90
2040.75    0.458    26.43
2041.75    0.458    26.95
2042.75    0.458    27.48
2043.75    0.458    28.01
2044.75    0.458    28.53
2045.75    0.458    29.06
2046.75    0.458    29.58
2047.75    0.458    30.11
2048.75    0.458    30.64
2049.75    0.458    31.16
2050.75    0.458    31.69
2051.75    0.458    32.21
2052.75    0.458    32.74
2053.75    0.459    33.26
2054.75    0.459    33.79
2055.75    0.459    34.31
2056.75    0.459    34.83
2057.75    0.460    35.35
2058.75    0.460    35.88
2059.75    0.460    36.40
2060.75    0.460    36.92
2061.75    0.461    37.44
2062.75    0.461    37.95
2063.75    0.462    38.47
2064.75    0.462    38.99
2065.75    0.462    39.50
2066.75    0.463    40.02
2067.75    0.463    40.53
2068.75    0.464    41.05
2069.75    0.464    41.56
2070.75    0.465    42.07
2071.75    0.466    42.58
2072.75    0.466    43.08
2073.75    0.467    43.59
2074.75    0.467    44.10
2075.75    0.468    44.60
2076.75    0.469    45.10
2077.75    0.469    45.60
2078.75    0.470    46.10
2079.75    0.471    46.60
2080.75    0.471    47.10
2081.75    0.472    47.59
2082.75    0.473    48.09
2083.75    0.474    48.58
2084.75    0.474    49.07
2085.75    0.475    49.56
2086.75    0.476    50.05
2087.75    0.477    50.53
2088.75    0.478    51.02
2089.75    0.479    51.50
2090.75    0.479    51.98
2091.75    0.480    52.46
2092.75    0.481    52.93
2093.75    0.482    53.41
2094.75    0.483    53.88
2095.75    0.484    54.35
2096.75    0.485    54.82
2097.75    0.486    55.29
2098.75    0.487    55.76
2099.75    0.488    56.22
2100.75    0.489    56.68
2101.75    0.490    57.14
2102.75    0.491    57.60
2103.75    0.492    58.06
2104.75    0.493    58.52
2105.75    0.494    58.97
2106.75    0.495    59.42
2107.75    0.496    59.87
2108.75    0.497    60.32
2109.75    0.498    60.76
2110.75    0.499    61.21
2111.75    0.500    61.65
2112.75    0.501    62.09
2113.75    0.502    62.53
2114.75    0.503    62.96
2115.75    0.504    63.40
2116.75    0.505    63.83
2117.75    0.506    64.26
2118.75    0.507    64.69
2119.75    0.509    65.12
2120.75    0.510    65.54
2121.75    0.511    65.96
2122.75    0.512    66.39
2123.75    0.513    66.81
2124.75    0.514    67.22
2125.75    0.515    67.64
2126.75    0.516    68.06
2127.75    0.517    68.47
2128.75    0.518    68.88
2129.75    0.519    69.29
2130.75    0.520    69.70
2131.75    0.521    70.10
2132.75    0.522    70.51
2133.75    0.523    70.91
2134.75    0.524    71.31
2135.75    0.525    71.71
2136.75    0.526    72.11
2137.75    0.527    72.51
2138.75    0.528    72.90
2139.75    0.529    73.30
2140.75    0.530    73.69
2141.75    0.531    74.08
2142.75    0.532    74.47
2143.75    0.533    74.86
2144.75    0.534    75.25
2145.75    0.535    75.63
2146.75    0.536    76.02
2147.75    0.537    76.40
2148.75    0.537    76.78
2149.75    0.538    77.16
2150.75    0.539    77.54
2151.75    0.540    77.92
2152.75    0.541    78.30
2153.75    0.541    78.68
2154.75    0.542    79.05
2155.75    0.543    79.43
2156.75    0.543    79.80
2157.75    0.544    80.17
2158.75    0.545    80.54
2159.75    0.545    80.92
2160.75    0.546    81.29
2161.75    0.546    81.66
2162.75    0.547    82.03
2163.75    0.547    82.39
2164.75    0.547    82.76
2165.75    0.548    83.13
2166.75    0.548    83.50
2167.75    0.548    83.86
2168.75    0.548    84.23
2169.75    0.549    84.60
2170.75    0.549    84.96
2171.75    0.549    85.33
2172.75    0.549    85.70
2173.75    0.549    86.06
2174.75    0.549    86.43
2175.75    0.548    86.79
2176.75    0.548    87.16
2177.75    0.548    87.53
2178.75    0.548    87.90
2179.75    0.547    88.26
2180.75    0.547    88.63
2181.75    0.546    89.00
2182.75    0.545    89.37
2183.75    0.545    89.74
2184.75    0.544    90.11
2185.75    0.543    90.49
2186.75    0.542    90.86
2187.75    0.541    91.24
2188.75    0.540    91.62
2189.75    0.538    92.00
2190.75    0.537    92.38
2191.75    0.535    92.76
2192.75    0.533    93.15
2193.75    0.532    93.54
2194.75    0.530    93.93
2195.75    0.528    94.32
2196.75    0.525    94.72
2197.75    0.523    95.12
2198.75    0.520    95.53
2199.75    0.517    95.93
2200.75    0.514    96.35
2201.75    0.511    96.77
2202.75    0.508    97.19
2203.75    0.504    97.62
2204.75    0.500    98.06
2205.75    0.496    98.50
2206.75    0.491    98.96
2207.75    0.487    99.42
2208.75    0.481    99.89
2209.75    0.476   100.37
2210.75    0.470   100.86
2211.75    0.463   101.37
2212.75    0.456   101.89
2213.75    0.449   102.43
2214.75    0.441   102.98
2215.75    0.432   103.56
2216.75    0.422   104.17
2217.75    0.412   104.80
2218.75    0.400   105.47
2219.75    0.388   106.18
2220.75    0.374   106.94






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 18:53:03



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