Double Star Calculator - Orbit

Orbital Elements for SIG3
WDS: SIG3 WDS ID/Discoverer
P: 317.000 Orbital period (years)
a: 0.728 Semi-major axis (arcseconds)
i: 44.0 Inclination (degrees)
Ω: 99.0 Longitude of ascending node (degrees)
T: 2004.300 Epoch of periastron passage (year)
e: 0.71 Eccentricity
ω: 267.0 Longitude of periastron (degrees)
Start-Year: 1866.5 Year
End-Year: 2183.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for SIG3
Position: 175012.91+442404.3 Epoch-2000 right ascension and declination
WDS-ID: 17502+4424 WDS designation
Discoverer Code: SIG3 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 13.2 k Magnitude of the primary
V2: 14.0 k Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2009 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Kon2010 Reference

Double Star Orbit for SIG3



WDS 6th Orbit including measures of SIG3

-- 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 SIG3
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.465   111.21
--------------------------
1866.50    0.886   192.76
1867.50    0.885   193.15
1868.50    0.884   193.54
1869.50    0.883   193.93
1870.50    0.882   194.32
1871.50    0.881   194.71
1872.50    0.880   195.11
1873.50    0.879   195.50
1874.50    0.878   195.90
1875.50    0.877   196.29
1876.50    0.876   196.69
1877.50    0.874   197.09
1878.50    0.873   197.49
1879.50    0.872   197.89
1880.50    0.871   198.29
1881.50    0.869   198.69
1882.50    0.868   199.10
1883.50    0.867   199.50
1884.50    0.865   199.91
1885.50    0.864   200.32
1886.50    0.862   200.73
1887.50    0.861   201.14
1888.50    0.859   201.55
1889.50    0.858   201.96
1890.50    0.856   202.38
1891.50    0.854   202.79
1892.50    0.853   203.21
1893.50    0.851   203.63
1894.50    0.849   204.06
1895.50    0.847   204.48
1896.50    0.845   204.91
1897.50    0.844   205.33
1898.50    0.842   205.76
1899.50    0.840   206.19
1900.50    0.838   206.63
1901.50    0.836   207.06
1902.50    0.834   207.50
1903.50    0.832   207.94
1904.50    0.829   208.38
1905.50    0.827   208.83
1906.50    0.825   209.27
1907.50    0.823   209.72
1908.50    0.821   210.17
1909.50    0.818   210.63
1910.50    0.816   211.08
1911.50    0.813   211.54
1912.50    0.811   212.01
1913.50    0.808   212.47
1914.50    0.806   212.94
1915.50    0.803   213.41
1916.50    0.801   213.88
1917.50    0.798   214.36
1918.50    0.795   214.84
1919.50    0.792   215.33
1920.50    0.790   215.81
1921.50    0.787   216.30
1922.50    0.784   216.80
1923.50    0.781   217.30
1924.50    0.778   217.80
1925.50    0.775   218.30
1926.50    0.772   218.81
1927.50    0.768   219.33
1928.50    0.765   219.85
1929.50    0.762   220.37
1930.50    0.759   220.90
1931.50    0.755   221.43
1932.50    0.752   221.97
1933.50    0.748   222.51
1934.50    0.745   223.06
1935.50    0.741   223.61
1936.50    0.737   224.17
1937.50    0.733   224.73
1938.50    0.730   225.30
1939.50    0.726   225.88
1940.50    0.722   226.46
1941.50    0.718   227.05
1942.50    0.714   227.64
1943.50    0.709   228.25
1944.50    0.705   228.85
1945.50    0.701   229.47
1946.50    0.696   230.10
1947.50    0.692   230.73
1948.50    0.687   231.37
1949.50    0.683   232.02
1950.50    0.678   232.68
1951.50    0.673   233.35
1952.50    0.668   234.02
1953.50    0.663   234.71
1954.50    0.658   235.41
1955.50    0.653   236.12
1956.50    0.647   236.84
1957.50    0.642   237.58
1958.50    0.636   238.32
1959.50    0.631   239.08
1960.50    0.625   239.86
1961.50    0.619   240.65
1962.50    0.613   241.45
1963.50    0.607   242.27
1964.50    0.600   243.11
1965.50    0.594   243.96
1966.50    0.587   244.84
1967.50    0.580   245.73
1968.50    0.573   246.65
1969.50    0.566   247.59
1970.50    0.559   248.55
1971.50    0.551   249.54
1972.50    0.544   250.55
1973.50    0.536   251.60
1974.50    0.528   252.68
1975.50    0.519   253.79
1976.50    0.511   254.94
1977.50    0.502   256.13
1978.50    0.493   257.36
1979.50    0.483   258.64
1980.50    0.474   259.97
1981.50    0.464   261.36
1982.50    0.453   262.81
1983.50    0.443   264.33
1984.50    0.431   265.93
1985.50    0.420   267.61
1986.50    0.408   269.39
1987.50    0.396   271.28
1988.50    0.383   273.29
1989.50    0.369   275.45
1990.50    0.355   277.78
1991.50    0.341   280.29
1992.50    0.326   283.04
1993.50    0.310   286.06
1994.50    0.294   289.41
1995.50    0.277   293.17
1996.50    0.259   297.42
1997.50    0.242   302.28
1998.50    0.224   307.92
1999.50    0.206   314.52
2000.50    0.190   322.32
2001.50    0.175   331.53
2002.50    0.163   342.27
2003.50    0.155   354.43
2004.50    0.152     7.47
2005.50    0.155    20.53
2006.50    0.162    32.73
2007.50    0.174    43.52
2008.50    0.189    52.76
2009.50    0.206    60.57
2010.50    0.224    67.17
2011.50    0.242    72.78
2012.50    0.261    77.61
2013.50    0.279    81.80
2014.50    0.296    85.50
2015.50    0.313    88.79
2016.50    0.330    91.74
2017.50    0.346    94.41
2018.50    0.361    96.86
2019.50    0.376    99.11
2020.50    0.390   101.19
2021.50    0.404   103.12
2022.50    0.417   104.94
2023.50    0.430   106.64
2024.50    0.442   108.24
2025.50    0.454   109.76
2026.50    0.465   111.21
2027.50    0.476   112.58
2028.50    0.487   113.90
2029.50    0.498   115.15
2030.50    0.508   116.36
2031.50    0.517   117.52
2032.50    0.527   118.64
2033.50    0.536   119.72
2034.50    0.545   120.76
2035.50    0.554   121.77
2036.50    0.562   122.75
2037.50    0.571   123.70
2038.50    0.579   124.62
2039.50    0.586   125.52
2040.50    0.594   126.40
2041.50    0.601   127.25
2042.50    0.609   128.08
2043.50    0.616   128.90
2044.50    0.623   129.69
2045.50    0.629   130.47
2046.50    0.636   131.23
2047.50    0.642   131.98
2048.50    0.649   132.71
2049.50    0.655   133.43
2050.50    0.661   134.13
2051.50    0.667   134.82
2052.50    0.672   135.51
2053.50    0.678   136.17
2054.50    0.683   136.83
2055.50    0.689   137.48
2056.50    0.694   138.12
2057.50    0.699   138.75
2058.50    0.704   139.37
2059.50    0.709   139.98
2060.50    0.714   140.58
2061.50    0.718   141.17
2062.50    0.723   141.76
2063.50    0.728   142.34
2064.50    0.732   142.91
2065.50    0.736   143.48
2066.50    0.741   144.04
2067.50    0.745   144.59
2068.50    0.749   145.14
2069.50    0.753   145.68
2070.50    0.757   146.21
2071.50    0.761   146.74
2072.50    0.764   147.27
2073.50    0.768   147.79
2074.50    0.772   148.30
2075.50    0.775   148.81
2076.50    0.779   149.32
2077.50    0.782   149.82
2078.50    0.785   150.31
2079.50    0.789   150.81
2080.50    0.792   151.29
2081.50    0.795   151.78
2082.50    0.798   152.26
2083.50    0.801   152.74
2084.50    0.804   153.21
2085.50    0.807   153.68
2086.50    0.810   154.15
2087.50    0.813   154.61
2088.50    0.815   155.07
2089.50    0.818   155.53
2090.50    0.820   155.98
2091.50    0.823   156.43
2092.50    0.826   156.88
2093.50    0.828   157.33
2094.50    0.830   157.77
2095.50    0.833   158.21
2096.50    0.835   158.65
2097.50    0.837   159.09
2098.50    0.839   159.52
2099.50    0.842   159.95
2100.50    0.844   160.38
2101.50    0.846   160.81
2102.50    0.848   161.23
2103.50    0.850   161.66
2104.50    0.852   162.08
2105.50    0.853   162.50
2106.50    0.855   162.92
2107.50    0.857   163.33
2108.50    0.859   163.75
2109.50    0.860   164.16
2110.50    0.862   164.57
2111.50    0.864   164.98
2112.50    0.865   165.39
2113.50    0.867   165.79
2114.50    0.868   166.20
2115.50    0.870   166.60
2116.50    0.871   167.00
2117.50    0.872   167.41
2118.50    0.874   167.81
2119.50    0.875   168.20
2120.50    0.876   168.60
2121.50    0.877   169.00
2122.50    0.879   169.39
2123.50    0.880   169.79
2124.50    0.881   170.18
2125.50    0.882   170.57
2126.50    0.883   170.97
2127.50    0.884   171.36
2128.50    0.885   171.75
2129.50    0.886   172.14
2130.50    0.887   172.52
2131.50    0.887   172.91
2132.50    0.888   173.30
2133.50    0.889   173.68
2134.50    0.890   174.07
2135.50    0.890   174.45
2136.50    0.891   174.84
2137.50    0.892   175.22
2138.50    0.892   175.61
2139.50    0.893   175.99
2140.50    0.893   176.37
2141.50    0.894   176.75
2142.50    0.894   177.13
2143.50    0.895   177.51
2144.50    0.895   177.90
2145.50    0.896   178.28
2146.50    0.896   178.66
2147.50    0.896   179.04
2148.50    0.896   179.42
2149.50    0.897   179.79
2150.50    0.897   180.17
2151.50    0.897   180.55
2152.50    0.897   180.93
2153.50    0.897   181.31
2154.50    0.897   181.69
2155.50    0.897   182.07
2156.50    0.897   182.45
2157.50    0.897   182.82
2158.50    0.897   183.20
2159.50    0.897   183.58
2160.50    0.897   183.96
2161.50    0.897   184.34
2162.50    0.897   184.72
2163.50    0.896   185.10
2164.50    0.896   185.48
2165.50    0.896   185.86
2166.50    0.896   186.24
2167.50    0.895   186.62
2168.50    0.895   187.00
2169.50    0.895   187.38
2170.50    0.894   187.76
2171.50    0.894   188.14
2172.50    0.893   188.52
2173.50    0.893   188.91
2174.50    0.892   189.29
2175.50    0.891   189.67
2176.50    0.891   190.06
2177.50    0.890   190.44
2178.50    0.890   190.83
2179.50    0.889   191.21
2180.50    0.888   191.60
2181.50    0.887   191.98
2182.50    0.887   192.37






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 17:43:33



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