Double Star Calculator - Orbit

Orbital Elements for I516
WDS: I516 WDS ID/Discoverer
P: 300.000 Orbital period (years)
a: 0.77 Semi-major axis (arcseconds)
i: 89.0 Inclination (degrees)
Ω: 186.5 Longitude of ascending node (degrees)
T: 2083.040 Epoch of periastron passage (year)
e: 0.653 Eccentricity
ω: 238.9 Longitude of periastron (degrees)
Start-Year: 1875.0 Year
End-Year: 2175.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I516
Position: 131905.43-523917.4 Epoch-2000 right ascension and declination
WDS-ID: 13191-5239 WDS designation
Discoverer Code: I516 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 115595 HD catalog number
Hipparcos number: 64982 Hipparcos catalog number
V1: 8.17 Magnitude of the primary
V2: 9.54 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2020 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2020g Reference

Double Star Orbit for I516



WDS 6th Orbit including measures of I516

-- 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 I516
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.128   359.60
--------------------------
1875.00    0.892   187.28
1876.00    0.891   187.29
1877.00    0.890   187.31
1878.00    0.888   187.32
1879.00    0.887   187.33
1880.00    0.885   187.34
1881.00    0.883   187.35
1882.00    0.881   187.37
1883.00    0.879   187.38
1884.00    0.877   187.39
1885.00    0.874   187.40
1886.00    0.872   187.42
1887.00    0.870   187.43
1888.00    0.867   187.44
1889.00    0.864   187.45
1890.00    0.861   187.47
1891.00    0.858   187.48
1892.00    0.855   187.49
1893.00    0.852   187.50
1894.00    0.849   187.52
1895.00    0.846   187.53
1896.00    0.842   187.54
1897.00    0.839   187.56
1898.00    0.835   187.57
1899.00    0.831   187.58
1900.00    0.828   187.60
1901.00    0.824   187.61
1902.00    0.820   187.62
1903.00    0.816   187.64
1904.00    0.812   187.65
1905.00    0.807   187.67
1906.00    0.803   187.68
1907.00    0.799   187.70
1908.00    0.794   187.71
1909.00    0.790   187.73
1910.00    0.785   187.74
1911.00    0.780   187.76
1912.00    0.776   187.77
1913.00    0.771   187.79
1914.00    0.766   187.80
1915.00    0.761   187.82
1916.00    0.756   187.84
1917.00    0.750   187.85
1918.00    0.745   187.87
1919.00    0.740   187.89
1920.00    0.735   187.90
1921.00    0.729   187.92
1922.00    0.723   187.94
1923.00    0.718   187.96
1924.00    0.712   187.98
1925.00    0.706   187.99
1926.00    0.701   188.01
1927.00    0.695   188.03
1928.00    0.689   188.05
1929.00    0.683   188.07
1930.00    0.677   188.09
1931.00    0.670   188.11
1932.00    0.664   188.13
1933.00    0.658   188.16
1934.00    0.652   188.18
1935.00    0.645   188.20
1936.00    0.639   188.22
1937.00    0.632   188.25
1938.00    0.626   188.27
1939.00    0.619   188.29
1940.00    0.612   188.32
1941.00    0.605   188.34
1942.00    0.599   188.37
1943.00    0.592   188.40
1944.00    0.585   188.42
1945.00    0.578   188.45
1946.00    0.571   188.48
1947.00    0.564   188.51
1948.00    0.556   188.54
1949.00    0.549   188.57
1950.00    0.542   188.60
1951.00    0.534   188.64
1952.00    0.527   188.67
1953.00    0.520   188.70
1954.00    0.512   188.74
1955.00    0.505   188.77
1956.00    0.497   188.81
1957.00    0.489   188.85
1958.00    0.482   188.89
1959.00    0.474   188.93
1960.00    0.466   188.97
1961.00    0.458   189.02
1962.00    0.450   189.06
1963.00    0.442   189.11
1964.00    0.434   189.16
1965.00    0.426   189.21
1966.00    0.418   189.26
1967.00    0.410   189.32
1968.00    0.402   189.38
1969.00    0.394   189.44
1970.00    0.385   189.50
1971.00    0.377   189.56
1972.00    0.369   189.63
1973.00    0.360   189.70
1974.00    0.352   189.77
1975.00    0.343   189.85
1976.00    0.335   189.93
1977.00    0.326   190.02
1978.00    0.318   190.11
1979.00    0.309   190.21
1980.00    0.301   190.31
1981.00    0.292   190.41
1982.00    0.283   190.53
1983.00    0.274   190.65
1984.00    0.266   190.78
1985.00    0.257   190.92
1986.00    0.248   191.06
1987.00    0.239   191.22
1988.00    0.230   191.39
1989.00    0.221   191.58
1990.00    0.212   191.78
1991.00    0.203   192.00
1992.00    0.194   192.24
1993.00    0.185   192.50
1994.00    0.176   192.79
1995.00    0.167   193.11
1996.00    0.158   193.46
1997.00    0.149   193.86
1998.00    0.140   194.32
1999.00    0.130   194.83
2000.00    0.121   195.43
2001.00    0.112   196.12
2002.00    0.103   196.93
2003.00    0.094   197.91
2004.00    0.085   199.09
2005.00    0.076   200.56
2006.00    0.067   202.43
2007.00    0.058   204.88
2008.00    0.049   208.24
2009.00    0.040   213.05
2010.00    0.032   220.40
2011.00    0.025   232.43
2012.00    0.019   252.70
2013.00    0.018   281.83
2014.00    0.021   308.94
2015.00    0.027   326.36
2016.00    0.034   336.68
2017.00    0.043   343.12
2018.00    0.051   347.41
2019.00    0.060   350.46
2020.00    0.069   352.71
2021.00    0.078   354.45
2022.00    0.087   355.83
2023.00    0.096   356.94
2024.00    0.106   357.87
2025.00    0.115   358.64
2026.00    0.124   359.30
2027.00    0.133   359.88
2028.00    0.142     0.37
2029.00    0.151     0.81
2030.00    0.160     1.20
2031.00    0.169     1.55
2032.00    0.178     1.86
2033.00    0.187     2.15
2034.00    0.195     2.40
2035.00    0.204     2.64
2036.00    0.213     2.86
2037.00    0.221     3.06
2038.00    0.230     3.24
2039.00    0.238     3.41
2040.00    0.246     3.57
2041.00    0.255     3.72
2042.00    0.263     3.86
2043.00    0.271     4.00
2044.00    0.278     4.12
2045.00    0.286     4.24
2046.00    0.293     4.35
2047.00    0.301     4.46
2048.00    0.308     4.56
2049.00    0.315     4.66
2050.00    0.321     4.75
2051.00    0.328     4.84
2052.00    0.334     4.92
2053.00    0.340     5.01
2054.00    0.346     5.09
2055.00    0.351     5.16
2056.00    0.356     5.24
2057.00    0.360     5.31
2058.00    0.365     5.39
2059.00    0.368     5.46
2060.00    0.372     5.52
2061.00    0.374     5.59
2062.00    0.376     5.66
2063.00    0.378     5.72
2064.00    0.379     5.79
2065.00    0.379     5.86
2066.00    0.378     5.92
2067.00    0.376     5.99
2068.00    0.373     6.05
2069.00    0.370     6.12
2070.00    0.365     6.19
2071.00    0.358     6.26
2072.00    0.350     6.34
2073.00    0.341     6.42
2074.00    0.330     6.50
2075.00    0.317     6.59
2076.00    0.302     6.69
2077.00    0.285     6.80
2078.00    0.266     6.92
2079.00    0.245     7.06
2080.00    0.222     7.24
2081.00    0.196     7.45
2082.00    0.169     7.74
2083.00    0.139     8.14
2084.00    0.109     8.76
2085.00    0.077     9.89
2086.00    0.044    12.66
2087.00    0.012    30.83
2088.00    0.023   173.84
2089.00    0.056   181.24
2090.00    0.088   183.16
2091.00    0.120   184.05
2092.00    0.151   184.57
2093.00    0.182   184.91
2094.00    0.211   185.15
2095.00    0.240   185.34
2096.00    0.267   185.49
2097.00    0.294   185.61
2098.00    0.319   185.71
2099.00    0.344   185.79
2100.00    0.368   185.87
2101.00    0.391   185.93
2102.00    0.413   185.99
2103.00    0.434   186.04
2104.00    0.454   186.09
2105.00    0.474   186.13
2106.00    0.493   186.17
2107.00    0.511   186.21
2108.00    0.528   186.25
2109.00    0.545   186.28
2110.00    0.561   186.31
2111.00    0.577   186.34
2112.00    0.592   186.37
2113.00    0.606   186.39
2114.00    0.620   186.42
2115.00    0.634   186.44
2116.00    0.646   186.46
2117.00    0.659   186.49
2118.00    0.671   186.51
2119.00    0.682   186.53
2120.00    0.693   186.55
2121.00    0.704   186.57
2122.00    0.714   186.59
2123.00    0.724   186.60
2124.00    0.734   186.62
2125.00    0.743   186.64
2126.00    0.752   186.66
2127.00    0.760   186.67
2128.00    0.768   186.69
2129.00    0.776   186.70
2130.00    0.784   186.72
2131.00    0.791   186.74
2132.00    0.798   186.75
2133.00    0.804   186.76
2134.00    0.811   186.78
2135.00    0.817   186.79
2136.00    0.822   186.81
2137.00    0.828   186.82
2138.00    0.833   186.83
2139.00    0.838   186.85
2140.00    0.843   186.86
2141.00    0.848   186.87
2142.00    0.852   186.89
2143.00    0.856   186.90
2144.00    0.860   186.91
2145.00    0.864   186.93
2146.00    0.867   186.94
2147.00    0.870   186.95
2148.00    0.873   186.96
2149.00    0.876   186.98
2150.00    0.879   186.99
2151.00    0.881   187.00
2152.00    0.884   187.01
2153.00    0.886   187.02
2154.00    0.888   187.04
2155.00    0.889   187.05
2156.00    0.891   187.06
2157.00    0.892   187.07
2158.00    0.894   187.08
2159.00    0.895   187.10
2160.00    0.896   187.11
2161.00    0.897   187.12
2162.00    0.897   187.13
2163.00    0.898   187.14
2164.00    0.898   187.15
2165.00    0.898   187.17
2166.00    0.898   187.18
2167.00    0.898   187.19
2168.00    0.898   187.20
2169.00    0.897   187.21
2170.00    0.897   187.22
2171.00    0.896   187.24
2172.00    0.896   187.25
2173.00    0.895   187.26
2174.00    0.894   187.27






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 16:54:59



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