Double Star Calculator - Orbit

Orbital Elements for I699AB
WDS: I699AB WDS ID/Discoverer
P: 290.000 Orbital period (years)
a: 2.738 Semi-major axis (arcseconds)
i: 57.7 Inclination (degrees)
Ω: 117.8 Longitude of ascending node (degrees)
T: 1884.540 Epoch of periastron passage (year)
e: 0.65 Eccentricity
ω: 207.1 Longitude of periastron (degrees)
Start-Year: 1880.0 Year
End-Year: 2170.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I699AB
Position: 000208.72-681650.6 Epoch-2000 right ascension and declination
WDS-ID: 00021-6817 WDS designation
Discoverer Code: I699AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 224953 HD catalog number
Hipparcos number: 169 Hipparcos catalog number
V1: 9.71 Magnitude of the primary
V2: 10.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2000 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Zir2013d Reference

Double Star Orbit for I699AB



WDS 6th Orbit including measures of I699AB

-- 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 I699AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.194   132.44
--------------------------
1880.00    1.021   294.42
1881.00    1.000   298.12
1882.00    0.973   302.00
1883.00    0.942   306.12
1884.00    0.906   310.55
1885.00    0.865   315.36
1886.00    0.823   320.67
1887.00    0.779   326.57
1888.00    0.736   333.17
1889.00    0.697   340.54
1890.00    0.665   348.71
1891.00    0.642   357.60
1892.00    0.630     6.97
1893.00    0.632    16.49
1894.00    0.647    25.77
1895.00    0.674    34.46
1896.00    0.712    42.35
1897.00    0.760    49.35
1898.00    0.814    55.47
1899.00    0.873    60.80
1900.00    0.936    65.42
1901.00    1.002    69.45
1902.00    1.070    72.98
1903.00    1.138    76.08
1904.00    1.208    78.83
1905.00    1.277    81.28
1906.00    1.346    83.48
1907.00    1.415    85.46
1908.00    1.483    87.26
1909.00    1.550    88.90
1910.00    1.617    90.41
1911.00    1.683    91.80
1912.00    1.747    93.09
1913.00    1.811    94.28
1914.00    1.873    95.39
1915.00    1.935    96.44
1916.00    1.995    97.41
1917.00    2.055    98.34
1918.00    2.113    99.21
1919.00    2.170   100.03
1920.00    2.227   100.81
1921.00    2.282   101.56
1922.00    2.336   102.26
1923.00    2.389   102.94
1924.00    2.441   103.59
1925.00    2.492   104.21
1926.00    2.542   104.81
1927.00    2.591   105.38
1928.00    2.639   105.93
1929.00    2.686   106.47
1930.00    2.732   106.98
1931.00    2.777   107.48
1932.00    2.821   107.96
1933.00    2.865   108.43
1934.00    2.907   108.88
1935.00    2.949   109.33
1936.00    2.990   109.75
1937.00    3.030   110.17
1938.00    3.069   110.58
1939.00    3.107   110.97
1940.00    3.145   111.36
1941.00    3.182   111.74
1942.00    3.218   112.11
1943.00    3.253   112.47
1944.00    3.287   112.82
1945.00    3.321   113.17
1946.00    3.354   113.51
1947.00    3.386   113.84
1948.00    3.418   114.17
1949.00    3.448   114.49
1950.00    3.479   114.80
1951.00    3.508   115.11
1952.00    3.537   115.42
1953.00    3.565   115.72
1954.00    3.592   116.01
1955.00    3.619   116.30
1956.00    3.645   116.59
1957.00    3.671   116.87
1958.00    3.696   117.15
1959.00    3.720   117.42
1960.00    3.744   117.70
1961.00    3.767   117.96
1962.00    3.789   118.23
1963.00    3.811   118.49
1964.00    3.832   118.75
1965.00    3.853   119.00
1966.00    3.873   119.26
1967.00    3.893   119.51
1968.00    3.912   119.76
1969.00    3.930   120.00
1970.00    3.948   120.25
1971.00    3.965   120.49
1972.00    3.982   120.73
1973.00    3.998   120.96
1974.00    4.014   121.20
1975.00    4.029   121.43
1976.00    4.044   121.66
1977.00    4.058   121.90
1978.00    4.072   122.12
1979.00    4.085   122.35
1980.00    4.098   122.58
1981.00    4.110   122.80
1982.00    4.122   123.02
1983.00    4.133   123.25
1984.00    4.144   123.47
1985.00    4.154   123.69
1986.00    4.164   123.90
1987.00    4.173   124.12
1988.00    4.182   124.34
1989.00    4.190   124.55
1990.00    4.198   124.77
1991.00    4.205   124.98
1992.00    4.212   125.20
1993.00    4.219   125.41
1994.00    4.225   125.62
1995.00    4.231   125.83
1996.00    4.236   126.04
1997.00    4.241   126.25
1998.00    4.245   126.46
1999.00    4.249   126.67
2000.00    4.252   126.88
2001.00    4.255   127.09
2002.00    4.258   127.30
2003.00    4.260   127.51
2004.00    4.262   127.72
2005.00    4.263   127.92
2006.00    4.264   128.13
2007.00    4.264   128.34
2008.00    4.265   128.55
2009.00    4.264   128.76
2010.00    4.263   128.96
2011.00    4.262   129.17
2012.00    4.261   129.38
2013.00    4.259   129.59
2014.00    4.256   129.80
2015.00    4.254   130.01
2016.00    4.250   130.21
2017.00    4.247   130.42
2018.00    4.243   130.63
2019.00    4.239   130.84
2020.00    4.234   131.05
2021.00    4.229   131.26
2022.00    4.223   131.48
2023.00    4.217   131.69
2024.00    4.211   131.90
2025.00    4.204   132.11
2026.00    4.197   132.33
2027.00    4.190   132.54
2028.00    4.182   132.76
2029.00    4.174   132.98
2030.00    4.165   133.19
2031.00    4.156   133.41
2032.00    4.147   133.63
2033.00    4.137   133.85
2034.00    4.127   134.07
2035.00    4.117   134.29
2036.00    4.106   134.52
2037.00    4.095   134.74
2038.00    4.083   134.97
2039.00    4.072   135.20
2040.00    4.059   135.42
2041.00    4.047   135.65
2042.00    4.034   135.89
2043.00    4.020   136.12
2044.00    4.007   136.35
2045.00    3.993   136.59
2046.00    3.978   136.83
2047.00    3.963   137.07
2048.00    3.948   137.31
2049.00    3.933   137.55
2050.00    3.917   137.80
2051.00    3.901   138.05
2052.00    3.884   138.29
2053.00    3.867   138.55
2054.00    3.850   138.80
2055.00    3.832   139.06
2056.00    3.814   139.31
2057.00    3.796   139.58
2058.00    3.777   139.84
2059.00    3.758   140.11
2060.00    3.739   140.37
2061.00    3.719   140.65
2062.00    3.699   140.92
2063.00    3.679   141.20
2064.00    3.658   141.48
2065.00    3.637   141.76
2066.00    3.615   142.05
2067.00    3.594   142.34
2068.00    3.571   142.64
2069.00    3.549   142.93
2070.00    3.526   143.24
2071.00    3.503   143.54
2072.00    3.480   143.85
2073.00    3.456   144.17
2074.00    3.432   144.49
2075.00    3.407   144.81
2076.00    3.382   145.14
2077.00    3.357   145.47
2078.00    3.332   145.81
2079.00    3.306   146.15
2080.00    3.280   146.50
2081.00    3.253   146.85
2082.00    3.226   147.21
2083.00    3.199   147.58
2084.00    3.172   147.95
2085.00    3.144   148.33
2086.00    3.116   148.72
2087.00    3.087   149.11
2088.00    3.059   149.51
2089.00    3.029   149.92
2090.00    3.000   150.33
2091.00    2.970   150.76
2092.00    2.940   151.19
2093.00    2.910   151.63
2094.00    2.879   152.08
2095.00    2.849   152.54
2096.00    2.817   153.01
2097.00    2.786   153.50
2098.00    2.754   153.99
2099.00    2.722   154.49
2100.00    2.690   155.01
2101.00    2.657   155.54
2102.00    2.624   156.08
2103.00    2.591   156.64
2104.00    2.557   157.21
2105.00    2.524   157.79
2106.00    2.490   158.39
2107.00    2.455   159.01
2108.00    2.421   159.65
2109.00    2.386   160.30
2110.00    2.351   160.97
2111.00    2.316   161.67
2112.00    2.281   162.38
2113.00    2.246   163.12
2114.00    2.210   163.88
2115.00    2.174   164.67
2116.00    2.138   165.48
2117.00    2.102   166.32
2118.00    2.066   167.19
2119.00    2.029   168.09
2120.00    1.993   169.03
2121.00    1.957   170.00
2122.00    1.920   171.00
2123.00    1.884   172.05
2124.00    1.847   173.13
2125.00    1.811   174.26
2126.00    1.774   175.44
2127.00    1.738   176.67
2128.00    1.702   177.94
2129.00    1.666   179.28
2130.00    1.631   180.67
2131.00    1.595   182.12
2132.00    1.560   183.64
2133.00    1.526   185.23
2134.00    1.492   186.89
2135.00    1.458   188.62
2136.00    1.425   190.44
2137.00    1.393   192.35
2138.00    1.362   194.34
2139.00    1.331   196.42
2140.00    1.302   198.61
2141.00    1.273   200.89
2142.00    1.246   203.27
2143.00    1.220   205.76
2144.00    1.195   208.35
2145.00    1.172   211.05
2146.00    1.151   213.85
2147.00    1.131   216.75
2148.00    1.113   219.75
2149.00    1.097   222.85
2150.00    1.083   226.03
2151.00    1.071   229.28
2152.00    1.062   232.61
2153.00    1.054   235.99
2154.00    1.048   239.41
2155.00    1.044   242.87
2156.00    1.042   246.34
2157.00    1.041   249.83
2158.00    1.042   253.31
2159.00    1.044   256.79
2160.00    1.047   260.24
2161.00    1.051   263.68
2162.00    1.054   267.09
2163.00    1.057   270.48
2164.00    1.060   273.85
2165.00    1.060   277.22
2166.00    1.059   280.58
2167.00    1.055   283.96
2168.00    1.048   287.37
2169.00    1.037   290.85






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 14:34:01



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