Double Star Calculator - Orbit

Orbital Elements for HDO207AB
WDS: HDO207AB WDS ID/Discoverer
P: 400.000 Orbital period (years)
a: 0.548 Semi-major axis (arcseconds)
i: 76.4 Inclination (degrees)
Ω: 223.7 Longitude of ascending node (degrees)
T: 1960.650 Epoch of periastron passage (year)
e: 0.538 Eccentricity
ω: 149.0 Longitude of periastron (degrees)
Start-Year: 1825.0 Year
End-Year: 2225.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDO207AB
Position: 091250.63-605500.5 Epoch-2000 right ascension and declination
WDS-ID: 09128-6055 WDS designation
Discoverer Code: HDO207AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 79699 HD catalog number
Hipparcos number: 45214 Hipparcos catalog number
V1: 6.97 Magnitude of the primary
V2: 7.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 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: Doc2016d Reference

Double Star Orbit for HDO207AB



WDS 6th Orbit including measures of HDO207AB

-- 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 HDO207AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.130   140.57
--------------------------
1825.00    0.769   221.51
1826.00    0.767   221.60
1827.00    0.766   221.69
1828.00    0.765   221.78
1829.00    0.763   221.88
1830.00    0.762   221.97
1831.00    0.760   222.06
1832.00    0.758   222.15
1833.00    0.757   222.25
1834.00    0.755   222.34
1835.00    0.753   222.43
1836.00    0.751   222.53
1837.00    0.749   222.62
1838.00    0.747   222.72
1839.00    0.745   222.82
1840.00    0.743   222.91
1841.00    0.740   223.01
1842.00    0.738   223.11
1843.00    0.736   223.21
1844.00    0.733   223.31
1845.00    0.730   223.41
1846.00    0.728   223.51
1847.00    0.725   223.61
1848.00    0.722   223.71
1849.00    0.719   223.81
1850.00    0.716   223.92
1851.00    0.713   224.02
1852.00    0.710   224.13
1853.00    0.707   224.24
1854.00    0.704   224.34
1855.00    0.701   224.45
1856.00    0.697   224.56
1857.00    0.694   224.67
1858.00    0.690   224.78
1859.00    0.686   224.90
1860.00    0.683   225.01
1861.00    0.679   225.13
1862.00    0.675   225.24
1863.00    0.671   225.36
1864.00    0.667   225.48
1865.00    0.663   225.60
1866.00    0.658   225.73
1867.00    0.654   225.85
1868.00    0.650   225.98
1869.00    0.645   226.10
1870.00    0.640   226.23
1871.00    0.636   226.37
1872.00    0.631   226.50
1873.00    0.626   226.64
1874.00    0.621   226.77
1875.00    0.616   226.91
1876.00    0.611   227.06
1877.00    0.606   227.20
1878.00    0.600   227.35
1879.00    0.595   227.50
1880.00    0.589   227.65
1881.00    0.584   227.81
1882.00    0.578   227.97
1883.00    0.572   228.13
1884.00    0.566   228.29
1885.00    0.560   228.46
1886.00    0.554   228.63
1887.00    0.547   228.81
1888.00    0.541   228.99
1889.00    0.535   229.18
1890.00    0.528   229.37
1891.00    0.521   229.56
1892.00    0.514   229.76
1893.00    0.507   229.97
1894.00    0.500   230.18
1895.00    0.493   230.39
1896.00    0.486   230.62
1897.00    0.479   230.85
1898.00    0.471   231.09
1899.00    0.463   231.33
1900.00    0.456   231.59
1901.00    0.448   231.85
1902.00    0.440   232.12
1903.00    0.432   232.40
1904.00    0.424   232.69
1905.00    0.415   233.00
1906.00    0.407   233.32
1907.00    0.398   233.65
1908.00    0.389   233.99
1909.00    0.381   234.35
1910.00    0.372   234.73
1911.00    0.362   235.13
1912.00    0.353   235.55
1913.00    0.344   235.99
1914.00    0.334   236.46
1915.00    0.325   236.95
1916.00    0.315   237.47
1917.00    0.305   238.03
1918.00    0.295   238.62
1919.00    0.285   239.26
1920.00    0.275   239.94
1921.00    0.265   240.68
1922.00    0.254   241.47
1923.00    0.244   242.34
1924.00    0.233   243.28
1925.00    0.223   244.31
1926.00    0.212   245.44
1927.00    0.201   246.70
1928.00    0.190   248.10
1929.00    0.180   249.66
1930.00    0.169   251.43
1931.00    0.158   253.44
1932.00    0.147   255.75
1933.00    0.137   258.41
1934.00    0.126   261.52
1935.00    0.116   265.17
1936.00    0.107   269.49
1937.00    0.098   274.64
1938.00    0.090   280.77
1939.00    0.082   288.04
1940.00    0.077   296.52
1941.00    0.073   306.08
1942.00    0.071   316.38
1943.00    0.072   326.83
1944.00    0.075   336.79
1945.00    0.080   345.80
1946.00    0.086   353.63
1947.00    0.094     0.28
1948.00    0.102     5.89
1949.00    0.111    10.60
1950.00    0.121    14.59
1951.00    0.131    17.98
1952.00    0.141    20.90
1953.00    0.150    23.43
1954.00    0.160    25.65
1955.00    0.170    27.62
1956.00    0.180    29.37
1957.00    0.189    30.95
1958.00    0.198    32.39
1959.00    0.206    33.70
1960.00    0.214    34.92
1961.00    0.222    36.04
1962.00    0.229    37.10
1963.00    0.236    38.09
1964.00    0.242    39.03
1965.00    0.247    39.93
1966.00    0.252    40.78
1967.00    0.257    41.61
1968.00    0.261    42.41
1969.00    0.264    43.18
1970.00    0.267    43.94
1971.00    0.270    44.68
1972.00    0.272    45.41
1973.00    0.273    46.14
1974.00    0.274    46.85
1975.00    0.274    47.56
1976.00    0.274    48.28
1977.00    0.274    48.99
1978.00    0.273    49.70
1979.00    0.272    50.42
1980.00    0.271    51.15
1981.00    0.269    51.89
1982.00    0.267    52.63
1983.00    0.264    53.40
1984.00    0.261    54.17
1985.00    0.258    54.97
1986.00    0.255    55.78
1987.00    0.252    56.61
1988.00    0.248    57.47
1989.00    0.244    58.36
1990.00    0.240    59.27
1991.00    0.236    60.21
1992.00    0.232    61.19
1993.00    0.227    62.21
1994.00    0.223    63.27
1995.00    0.218    64.37
1996.00    0.214    65.52
1997.00    0.209    66.72
1998.00    0.204    67.98
1999.00    0.199    69.30
2000.00    0.195    70.68
2001.00    0.190    72.13
2002.00    0.185    73.65
2003.00    0.180    75.26
2004.00    0.176    76.95
2005.00    0.171    78.73
2006.00    0.167    80.61
2007.00    0.162    82.60
2008.00    0.158    84.69
2009.00    0.154    86.89
2010.00    0.150    89.21
2011.00    0.146    91.66
2012.00    0.143    94.22
2013.00    0.140    96.91
2014.00    0.137    99.72
2015.00    0.134   102.65
2016.00    0.132   105.70
2017.00    0.130   108.84
2018.00    0.128   112.08
2019.00    0.127   115.39
2020.00    0.126   118.76
2021.00    0.125   122.16
2022.00    0.125   125.58
2023.00    0.126   128.99
2024.00    0.126   132.38
2025.00    0.127   135.71
2026.00    0.129   138.97
2027.00    0.131   142.15
2028.00    0.133   145.23
2029.00    0.136   148.19
2030.00    0.139   151.04
2031.00    0.142   153.76
2032.00    0.145   156.36
2033.00    0.149   158.83
2034.00    0.153   161.18
2035.00    0.157   163.40
2036.00    0.162   165.51
2037.00    0.166   167.50
2038.00    0.171   169.39
2039.00    0.176   171.17
2040.00    0.181   172.85
2041.00    0.186   174.44
2042.00    0.191   175.95
2043.00    0.196   177.38
2044.00    0.202   178.73
2045.00    0.207   180.01
2046.00    0.213   181.22
2047.00    0.218   182.37
2048.00    0.224   183.47
2049.00    0.230   184.51
2050.00    0.235   185.50
2051.00    0.241   186.44
2052.00    0.247   187.34
2053.00    0.253   188.20
2054.00    0.259   189.02
2055.00    0.264   189.80
2056.00    0.270   190.55
2057.00    0.276   191.27
2058.00    0.282   191.96
2059.00    0.288   192.62
2060.00    0.294   193.25
2061.00    0.299   193.86
2062.00    0.305   194.45
2063.00    0.311   195.01
2064.00    0.317   195.56
2065.00    0.323   196.08
2066.00    0.329   196.59
2067.00    0.334   197.07
2068.00    0.340   197.55
2069.00    0.346   198.00
2070.00    0.352   198.44
2071.00    0.357   198.87
2072.00    0.363   199.28
2073.00    0.369   199.68
2074.00    0.374   200.07
2075.00    0.380   200.45
2076.00    0.385   200.81
2077.00    0.391   201.17
2078.00    0.397   201.51
2079.00    0.402   201.85
2080.00    0.408   202.18
2081.00    0.413   202.49
2082.00    0.419   202.80
2083.00    0.424   203.11
2084.00    0.429   203.40
2085.00    0.435   203.69
2086.00    0.440   203.97
2087.00    0.445   204.24
2088.00    0.451   204.51
2089.00    0.456   204.77
2090.00    0.461   205.02
2091.00    0.466   205.27
2092.00    0.471   205.52
2093.00    0.476   205.76
2094.00    0.481   205.99
2095.00    0.486   206.22
2096.00    0.491   206.44
2097.00    0.496   206.66
2098.00    0.501   206.88
2099.00    0.506   207.09
2100.00    0.511   207.30
2101.00    0.516   207.50
2102.00    0.521   207.70
2103.00    0.525   207.89
2104.00    0.530   208.09
2105.00    0.535   208.27
2106.00    0.539   208.46
2107.00    0.544   208.64
2108.00    0.548   208.82
2109.00    0.553   209.00
2110.00    0.557   209.17
2111.00    0.562   209.34
2112.00    0.566   209.51
2113.00    0.571   209.68
2114.00    0.575   209.84
2115.00    0.579   210.00
2116.00    0.583   210.16
2117.00    0.588   210.32
2118.00    0.592   210.47
2119.00    0.596   210.62
2120.00    0.600   210.77
2121.00    0.604   210.92
2122.00    0.608   211.07
2123.00    0.612   211.21
2124.00    0.616   211.35
2125.00    0.620   211.49
2126.00    0.624   211.63
2127.00    0.627   211.77
2128.00    0.631   211.90
2129.00    0.635   212.04
2130.00    0.639   212.17
2131.00    0.642   212.30
2132.00    0.646   212.43
2133.00    0.649   212.56
2134.00    0.653   212.68
2135.00    0.656   212.81
2136.00    0.660   212.93
2137.00    0.663   213.05
2138.00    0.666   213.18
2139.00    0.670   213.30
2140.00    0.673   213.42
2141.00    0.676   213.53
2142.00    0.679   213.65
2143.00    0.682   213.77
2144.00    0.685   213.88
2145.00    0.688   213.99
2146.00    0.691   214.11
2147.00    0.694   214.22
2148.00    0.697   214.33
2149.00    0.700   214.44
2150.00    0.703   214.55
2151.00    0.706   214.65
2152.00    0.708   214.76
2153.00    0.711   214.87
2154.00    0.713   214.97
2155.00    0.716   215.08
2156.00    0.719   215.18
2157.00    0.721   215.29
2158.00    0.723   215.39
2159.00    0.726   215.49
2160.00    0.728   215.59
2161.00    0.730   215.69
2162.00    0.733   215.79
2163.00    0.735   215.89
2164.00    0.737   215.99
2165.00    0.739   216.09
2166.00    0.741   216.19
2167.00    0.743   216.29
2168.00    0.745   216.38
2169.00    0.747   216.48
2170.00    0.749   216.57
2171.00    0.751   216.67
2172.00    0.752   216.76
2173.00    0.754   216.86
2174.00    0.756   216.95
2175.00    0.757   217.05
2176.00    0.759   217.14
2177.00    0.760   217.23
2178.00    0.762   217.32
2179.00    0.763   217.42
2180.00    0.765   217.51
2181.00    0.766   217.60
2182.00    0.767   217.69
2183.00    0.768   217.78
2184.00    0.769   217.87
2185.00    0.771   217.96
2186.00    0.772   218.05
2187.00    0.773   218.14
2188.00    0.773   218.23
2189.00    0.774   218.32
2190.00    0.775   218.41
2191.00    0.776   218.50
2192.00    0.777   218.59
2193.00    0.777   218.68
2194.00    0.778   218.77
2195.00    0.779   218.86
2196.00    0.779   218.94
2197.00    0.779   219.03
2198.00    0.780   219.12
2199.00    0.780   219.21
2200.00    0.781   219.30
2201.00    0.781   219.38
2202.00    0.781   219.47
2203.00    0.781   219.56
2204.00    0.781   219.65
2205.00    0.781   219.74
2206.00    0.781   219.82
2207.00    0.781   219.91
2208.00    0.781   220.00
2209.00    0.781   220.09
2210.00    0.780   220.17
2211.00    0.780   220.26
2212.00    0.779   220.35
2213.00    0.779   220.44
2214.00    0.779   220.53
2215.00    0.778   220.62
2216.00    0.777   220.70
2217.00    0.777   220.79
2218.00    0.776   220.88
2219.00    0.775   220.97
2220.00    0.774   221.06
2221.00    0.773   221.15
2222.00    0.772   221.24
2223.00    0.771   221.33
2224.00    0.770   221.42






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 16:15:12



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