Double Star Calculator - Orbit

Orbital Elements for STT12
WDS: STT12 WDS ID/Discoverer
P: 245.700 Orbital period (years)
a: 0.448 Semi-major axis (arcseconds)
i: 53.6 Inclination (degrees)
Ω: 17.6 Longitude of ascending node (degrees)
T: 2025.540 Epoch of periastron passage (year)
e: 0.689 Eccentricity
ω: 301.0 Longitude of periastron (degrees)
Start-Year: 1902.15 Year
End-Year: 2147.85 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT12
Position: 003146.32+543120.3 Epoch-2000 right ascension and declination
WDS-ID: 00318+5431 WDS designation
Discoverer Code: STT12 Discover designation and components
ADS number: 434 Aitken Double Star catalog
HD number: 2772 HD catalog number
Hipparcos number: 2505 Hipparcos catalog number
V1: 5.33 Magnitude of the primary
V2: 5.62 Magnitude of the secondary
Equinox: Equinox
Date: 2010 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: Dru2014 Reference

Double Star Orbit for STT12



WDS 6th Orbit including measures of STT12

-- 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 STT12
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.112   343.74
--------------------------
1902.15    0.547   152.73
1903.15    0.549   153.15
1904.15    0.551   153.57
1905.15    0.552   153.99
1906.15    0.554   154.40
1907.15    0.556   154.81
1908.15    0.558   155.22
1909.15    0.559   155.62
1910.15    0.561   156.03
1911.15    0.563   156.43
1912.15    0.564   156.82
1913.15    0.565   157.22
1914.15    0.567   157.62
1915.15    0.568   158.01
1916.15    0.570   158.40
1917.15    0.571   158.79
1918.15    0.572   159.18
1919.15    0.573   159.56
1920.15    0.574   159.95
1921.15    0.575   160.33
1922.15    0.576   160.71
1923.15    0.577   161.09
1924.15    0.578   161.47
1925.15    0.579   161.85
1926.15    0.580   162.22
1927.15    0.580   162.60
1928.15    0.581   162.97
1929.15    0.582   163.35
1930.15    0.582   163.72
1931.15    0.583   164.10
1932.15    0.583   164.47
1933.15    0.583   164.84
1934.15    0.583   165.21
1935.15    0.584   165.58
1936.15    0.584   165.95
1937.15    0.584   166.32
1938.15    0.584   166.70
1939.15    0.584   167.07
1940.15    0.584   167.44
1941.15    0.583   167.81
1942.15    0.583   168.18
1943.15    0.583   168.55
1944.15    0.582   168.93
1945.15    0.582   169.30
1946.15    0.581   169.68
1947.15    0.580   170.05
1948.15    0.579   170.43
1949.15    0.579   170.80
1950.15    0.578   171.18
1951.15    0.577   171.56
1952.15    0.575   171.94
1953.15    0.574   172.33
1954.15    0.573   172.71
1955.15    0.572   173.10
1956.15    0.570   173.48
1957.15    0.569   173.87
1958.15    0.567   174.27
1959.15    0.565   174.66
1960.15    0.563   175.06
1961.15    0.561   175.46
1962.15    0.559   175.86
1963.15    0.557   176.27
1964.15    0.555   176.68
1965.15    0.552   177.09
1966.15    0.550   177.51
1967.15    0.547   177.93
1968.15    0.544   178.35
1969.15    0.541   178.78
1970.15    0.538   179.22
1971.15    0.535   179.65
1972.15    0.532   180.10
1973.15    0.529   180.55
1974.15    0.525   181.00
1975.15    0.522   181.46
1976.15    0.518   181.93
1977.15    0.514   182.41
1978.15    0.510   182.89
1979.15    0.505   183.38
1980.15    0.501   183.88
1981.15    0.496   184.39
1982.15    0.492   184.91
1983.15    0.487   185.44
1984.15    0.482   185.98
1985.15    0.476   186.53
1986.15    0.471   187.09
1987.15    0.465   187.67
1988.15    0.459   188.26
1989.15    0.453   188.87
1990.15    0.447   189.49
1991.15    0.440   190.13
1992.15    0.434   190.80
1993.15    0.427   191.48
1994.15    0.419   192.19
1995.15    0.412   192.92
1996.15    0.404   193.68
1997.15    0.396   194.47
1998.15    0.388   195.29
1999.15    0.379   196.15
2000.15    0.370   197.05
2001.15    0.361   198.00
2002.15    0.351   198.99
2003.15    0.341   200.05
2004.15    0.331   201.17
2005.15    0.320   202.36
2006.15    0.309   203.64
2007.15    0.297   205.02
2008.15    0.285   206.52
2009.15    0.273   208.14
2010.15    0.259   209.93
2011.15    0.246   211.91
2012.15    0.232   214.13
2013.15    0.217   216.64
2014.15    0.202   219.51
2015.15    0.187   222.86
2016.15    0.171   226.81
2017.15    0.155   231.57
2018.15    0.139   237.43
2019.15    0.124   244.76
2020.15    0.110   254.08
2021.15    0.098   265.89
2022.15    0.090   280.38
2023.15    0.087   296.76
2024.15    0.089   313.22
2025.15    0.097   327.91
2026.15    0.108   340.07
2027.15    0.120   349.86
2028.15    0.133   357.79
2029.15    0.145     4.34
2030.15    0.157     9.90
2031.15    0.167    14.72
2032.15    0.177    18.99
2033.15    0.185    22.85
2034.15    0.193    26.38
2035.15    0.200    29.66
2036.15    0.206    32.74
2037.15    0.211    35.65
2038.15    0.216    38.41
2039.15    0.221    41.06
2040.15    0.225    43.61
2041.15    0.229    46.06
2042.15    0.232    48.44
2043.15    0.236    50.75
2044.15    0.239    52.99
2045.15    0.242    55.18
2046.15    0.245    57.31
2047.15    0.248    59.39
2048.15    0.251    61.43
2049.15    0.253    63.42
2050.15    0.256    65.37
2051.15    0.259    67.28
2052.15    0.261    69.15
2053.15    0.264    70.98
2054.15    0.267    72.77
2055.15    0.269    74.53
2056.15    0.272    76.26
2057.15    0.275    77.95
2058.15    0.277    79.61
2059.15    0.280    81.24
2060.15    0.283    82.83
2061.15    0.286    84.39
2062.15    0.289    85.93
2063.15    0.292    87.43
2064.15    0.294    88.90
2065.15    0.297    90.35
2066.15    0.300    91.76
2067.15    0.303    93.15
2068.15    0.306    94.51
2069.15    0.310    95.84
2070.15    0.313    97.15
2071.15    0.316    98.43
2072.15    0.319    99.69
2073.15    0.322   100.92
2074.15    0.325   102.13
2075.15    0.329   103.31
2076.15    0.332   104.47
2077.15    0.335   105.61
2078.15    0.338   106.72
2079.15    0.342   107.81
2080.15    0.345   108.89
2081.15    0.348   109.94
2082.15    0.352   110.97
2083.15    0.355   111.98
2084.15    0.359   112.98
2085.15    0.362   113.95
2086.15    0.365   114.91
2087.15    0.369   115.84
2088.15    0.372   116.77
2089.15    0.376   117.67
2090.15    0.379   118.56
2091.15    0.383   119.43
2092.15    0.386   120.29
2093.15    0.389   121.13
2094.15    0.393   121.96
2095.15    0.396   122.77
2096.15    0.400   123.57
2097.15    0.403   124.35
2098.15    0.406   125.13
2099.15    0.410   125.88
2100.15    0.413   126.63
2101.15    0.417   127.37
2102.15    0.420   128.09
2103.15    0.423   128.80
2104.15    0.427   129.50
2105.15    0.430   130.19
2106.15    0.433   130.87
2107.15    0.436   131.54
2108.15    0.440   132.20
2109.15    0.443   132.85
2110.15    0.446   133.49
2111.15    0.449   134.12
2112.15    0.453   134.74
2113.15    0.456   135.35
2114.15    0.459   135.96
2115.15    0.462   136.55
2116.15    0.465   137.14
2117.15    0.468   137.72
2118.15    0.471   138.30
2119.15    0.474   138.86
2120.15    0.477   139.42
2121.15    0.480   139.97
2122.15    0.483   140.52
2123.15    0.486   141.06
2124.15    0.489   141.59
2125.15    0.492   142.12
2126.15    0.495   142.64
2127.15    0.497   143.15
2128.15    0.500   143.66
2129.15    0.503   144.16
2130.15    0.505   144.66
2131.15    0.508   145.15
2132.15    0.511   145.64
2133.15    0.513   146.12
2134.15    0.516   146.60
2135.15    0.518   147.07
2136.15    0.521   147.54
2137.15    0.523   148.00
2138.15    0.526   148.46
2139.15    0.528   148.92
2140.15    0.530   149.37
2141.15    0.533   149.82
2142.15    0.535   150.26
2143.15    0.537   150.70
2144.15    0.539   151.14
2145.15    0.541   151.57
2146.15    0.543   152.01
2147.15    0.545   152.43






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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 14:40:09



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