Double Star Calculator - Orbit

Orbital Elements for I425
WDS: I425 WDS ID/Discoverer
P: 250.000 Orbital period (years)
a: 0.754 Semi-major axis (arcseconds)
i: 77.2 Inclination (degrees)
Ω: 129.9 Longitude of ascending node (degrees)
T: 2050.086 Epoch of periastron passage (year)
e: 0.75 Eccentricity
ω: 39.7 Longitude of periastron (degrees)
Start-Year: 1900.0 Year
End-Year: 2150.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I425
Position: 131728.71-403238.9 Epoch-2000 right ascension and declination
WDS-ID: 13175-4033 WDS designation
Discoverer Code: I425 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 115370 HD catalog number
Hipparcos number: 64835 Hipparcos catalog number
V1: 9.90 Magnitude of the primary
V2: 10.05 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 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: Tok2018e Reference

Double Star Orbit for I425



WDS 6th Orbit including measures of I425

-- 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 I425
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.137    47.40
--------------------------
1900.00    1.101   317.71
1901.00    1.100   317.81
1902.00    1.098   317.90
1903.00    1.097   318.00
1904.00    1.095   318.10
1905.00    1.094   318.20
1906.00    1.092   318.30
1907.00    1.090   318.41
1908.00    1.088   318.51
1909.00    1.085   318.61
1910.00    1.083   318.71
1911.00    1.081   318.81
1912.00    1.078   318.92
1913.00    1.075   319.02
1914.00    1.072   319.12
1915.00    1.069   319.23
1916.00    1.066   319.33
1917.00    1.063   319.44
1918.00    1.060   319.55
1919.00    1.056   319.65
1920.00    1.052   319.76
1921.00    1.049   319.87
1922.00    1.045   319.98
1923.00    1.041   320.09
1924.00    1.037   320.20
1925.00    1.033   320.31
1926.00    1.028   320.43
1927.00    1.024   320.54
1928.00    1.019   320.65
1929.00    1.015   320.77
1930.00    1.010   320.89
1931.00    1.005   321.01
1932.00    1.000   321.13
1933.00    0.995   321.25
1934.00    0.989   321.37
1935.00    0.984   321.49
1936.00    0.979   321.62
1937.00    0.973   321.74
1938.00    0.967   321.87
1939.00    0.962   322.00
1940.00    0.956   322.13
1941.00    0.950   322.26
1942.00    0.943   322.39
1943.00    0.937   322.53
1944.00    0.931   322.67
1945.00    0.924   322.81
1946.00    0.918   322.95
1947.00    0.911   323.09
1948.00    0.904   323.24
1949.00    0.897   323.39
1950.00    0.890   323.54
1951.00    0.883   323.69
1952.00    0.876   323.84
1953.00    0.869   324.00
1954.00    0.861   324.16
1955.00    0.854   324.32
1956.00    0.846   324.49
1957.00    0.838   324.66
1958.00    0.830   324.83
1959.00    0.822   325.01
1960.00    0.814   325.19
1961.00    0.806   325.37
1962.00    0.798   325.56
1963.00    0.789   325.75
1964.00    0.781   325.94
1965.00    0.772   326.14
1966.00    0.763   326.34
1967.00    0.755   326.55
1968.00    0.746   326.77
1969.00    0.737   326.98
1970.00    0.728   327.21
1971.00    0.718   327.44
1972.00    0.709   327.67
1973.00    0.700   327.91
1974.00    0.690   328.16
1975.00    0.680   328.42
1976.00    0.671   328.68
1977.00    0.661   328.95
1978.00    0.651   329.23
1979.00    0.641   329.52
1980.00    0.631   329.82
1981.00    0.620   330.12
1982.00    0.610   330.44
1983.00    0.600   330.77
1984.00    0.589   331.11
1985.00    0.578   331.46
1986.00    0.568   331.82
1987.00    0.557   332.20
1988.00    0.546   332.60
1989.00    0.535   333.01
1990.00    0.524   333.44
1991.00    0.513   333.88
1992.00    0.501   334.35
1993.00    0.490   334.84
1994.00    0.479   335.35
1995.00    0.467   335.89
1996.00    0.456   336.45
1997.00    0.444   337.04
1998.00    0.432   337.67
1999.00    0.420   338.33
2000.00    0.408   339.03
2001.00    0.396   339.77
2002.00    0.384   340.56
2003.00    0.372   341.39
2004.00    0.360   342.29
2005.00    0.348   343.24
2006.00    0.336   344.27
2007.00    0.324   345.37
2008.00    0.312   346.56
2009.00    0.300   347.84
2010.00    0.288   349.23
2011.00    0.276   350.74
2012.00    0.264   352.40
2013.00    0.252   354.20
2014.00    0.240   356.18
2015.00    0.229   358.37
2016.00    0.218     0.78
2017.00    0.207     3.45
2018.00    0.196     6.41
2019.00    0.186     9.70
2020.00    0.176    13.36
2021.00    0.167    17.43
2022.00    0.159    21.93
2023.00    0.152    26.88
2024.00    0.146    32.27
2025.00    0.141    38.08
2026.00    0.138    44.23
2027.00    0.136    50.62
2028.00    0.136    57.11
2029.00    0.137    63.56
2030.00    0.140    69.82
2031.00    0.144    75.78
2032.00    0.149    81.36
2033.00    0.156    86.52
2034.00    0.163    91.26
2035.00    0.171    95.57
2036.00    0.179    99.51
2037.00    0.187   103.09
2038.00    0.195   106.37
2039.00    0.204   109.39
2040.00    0.211   112.18
2041.00    0.218   114.79
2042.00    0.223   117.25
2043.00    0.227   119.62
2044.00    0.229   121.93
2045.00    0.227   124.23
2046.00    0.222   126.60
2047.00    0.213   129.12
2048.00    0.198   131.95
2049.00    0.177   135.36
2050.00    0.150   139.86
2051.00    0.118   146.58
2052.00    0.085   158.47
2053.00    0.057   183.85
2054.00    0.051   229.77
2055.00    0.073   263.70
2056.00    0.107   279.09
2057.00    0.143   286.91
2058.00    0.179   291.57
2059.00    0.214   294.69
2060.00    0.248   296.94
2061.00    0.281   298.66
2062.00    0.312   300.02
2063.00    0.343   301.14
2064.00    0.372   302.08
2065.00    0.399   302.89
2066.00    0.426   303.60
2067.00    0.452   304.22
2068.00    0.476   304.78
2069.00    0.500   305.28
2070.00    0.523   305.74
2071.00    0.545   306.16
2072.00    0.566   306.55
2073.00    0.587   306.91
2074.00    0.606   307.25
2075.00    0.625   307.57
2076.00    0.644   307.86
2077.00    0.662   308.14
2078.00    0.679   308.41
2079.00    0.696   308.67
2080.00    0.712   308.91
2081.00    0.728   309.14
2082.00    0.743   309.36
2083.00    0.757   309.57
2084.00    0.772   309.78
2085.00    0.785   309.98
2086.00    0.799   310.17
2087.00    0.812   310.35
2088.00    0.824   310.53
2089.00    0.836   310.71
2090.00    0.848   310.88
2091.00    0.859   311.04
2092.00    0.870   311.20
2093.00    0.881   311.36
2094.00    0.892   311.51
2095.00    0.902   311.66
2096.00    0.911   311.81
2097.00    0.921   311.95
2098.00    0.930   312.09
2099.00    0.939   312.23
2100.00    0.947   312.36
2101.00    0.955   312.49
2102.00    0.963   312.62
2103.00    0.971   312.75
2104.00    0.978   312.88
2105.00    0.986   313.00
2106.00    0.992   313.13
2107.00    0.999   313.25
2108.00    1.006   313.37
2109.00    1.012   313.48
2110.00    1.018   313.60
2111.00    1.023   313.72
2112.00    1.029   313.83
2113.00    1.034   313.94
2114.00    1.039   314.05
2115.00    1.044   314.17
2116.00    1.049   314.27
2117.00    1.053   314.38
2118.00    1.057   314.49
2119.00    1.061   314.60
2120.00    1.065   314.70
2121.00    1.069   314.81
2122.00    1.072   314.91
2123.00    1.076   315.02
2124.00    1.079   315.12
2125.00    1.082   315.22
2126.00    1.084   315.33
2127.00    1.087   315.43
2128.00    1.089   315.53
2129.00    1.091   315.63
2130.00    1.093   315.73
2131.00    1.095   315.83
2132.00    1.097   315.93
2133.00    1.099   316.03
2134.00    1.100   316.13
2135.00    1.101   316.23
2136.00    1.102   316.33
2137.00    1.103   316.43
2138.00    1.104   316.53
2139.00    1.104   316.62
2140.00    1.105   316.72
2141.00    1.105   316.82
2142.00    1.105   316.92
2143.00    1.105   317.02
2144.00    1.105   317.11
2145.00    1.105   317.21
2146.00    1.104   317.31
2147.00    1.103   317.41
2148.00    1.103   317.51
2149.00    1.102   317.61






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 16:54:28



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