Double Star Calculator - Orbit

Orbital Elements for BAR7
WDS: BAR7 WDS ID/Discoverer
P: 390.000 Orbital period (years)
a: 1.878 Semi-major axis (arcseconds)
i: 140.4 Inclination (degrees)
Ω: 177.8 Longitude of ascending node (degrees)
T: 2081.400 Epoch of periastron passage (year)
e: 0.204 Eccentricity
ω: 206.9 Longitude of periastron (degrees)
Start-Year: 1830.0 Year
End-Year: 2220.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BAR7
Position: 171408.07-082413.8 Epoch-2000 right ascension and declination
WDS-ID: 17141-0824 WDS designation
Discoverer Code: BAR7 Discover designation and components
ADS number: 10404 Aitken Double Star catalog
HD number: 155802 HD catalog number
Hipparcos number: 84303 Hipparcos catalog number
V1: 8.64 Magnitude of the primary
V2: 11.69 Magnitude of the secondary
Equinox: Equinox
Date: 2018 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: Tok2021f Reference

Double Star Orbit for BAR7



WDS 6th Orbit including measures of BAR7

-- 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 BAR7
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.511    35.24
--------------------------
1830.00    2.142   185.09
1831.00    2.147   184.56
1832.00    2.153   184.03
1833.00    2.157   183.50
1834.00    2.162   182.97
1835.00    2.167   182.45
1836.00    2.171   181.93
1837.00    2.176   181.41
1838.00    2.180   180.89
1839.00    2.183   180.37
1840.00    2.187   179.86
1841.00    2.191   179.34
1842.00    2.194   178.83
1843.00    2.197   178.32
1844.00    2.200   177.82
1845.00    2.203   177.31
1846.00    2.205   176.80
1847.00    2.208   176.30
1848.00    2.210   175.80
1849.00    2.212   175.29
1850.00    2.214   174.79
1851.00    2.216   174.29
1852.00    2.217   173.79
1853.00    2.218   173.29
1854.00    2.220   172.79
1855.00    2.220   172.30
1856.00    2.221   171.80
1857.00    2.222   171.30
1858.00    2.222   170.80
1859.00    2.223   170.31
1860.00    2.223   169.81
1861.00    2.223   169.31
1862.00    2.222   168.81
1863.00    2.222   168.32
1864.00    2.221   167.82
1865.00    2.220   167.32
1866.00    2.220   166.82
1867.00    2.218   166.32
1868.00    2.217   165.83
1869.00    2.216   165.33
1870.00    2.214   164.82
1871.00    2.212   164.32
1872.00    2.210   163.82
1873.00    2.208   163.32
1874.00    2.206   162.81
1875.00    2.204   162.31
1876.00    2.201   161.80
1877.00    2.198   161.29
1878.00    2.195   160.79
1879.00    2.192   160.28
1880.00    2.189   159.76
1881.00    2.186   159.25
1882.00    2.182   158.74
1883.00    2.179   158.22
1884.00    2.175   157.70
1885.00    2.171   157.18
1886.00    2.167   156.66
1887.00    2.162   156.13
1888.00    2.158   155.61
1889.00    2.154   155.08
1890.00    2.149   154.55
1891.00    2.144   154.02
1892.00    2.139   153.48
1893.00    2.134   152.94
1894.00    2.129   152.40
1895.00    2.124   151.86
1896.00    2.118   151.31
1897.00    2.113   150.77
1898.00    2.107   150.21
1899.00    2.101   149.66
1900.00    2.095   149.10
1901.00    2.089   148.54
1902.00    2.083   147.98
1903.00    2.077   147.41
1904.00    2.071   146.84
1905.00    2.064   146.26
1906.00    2.058   145.69
1907.00    2.051   145.10
1908.00    2.044   144.52
1909.00    2.037   143.93
1910.00    2.031   143.33
1911.00    2.024   142.74
1912.00    2.016   142.14
1913.00    2.009   141.53
1914.00    2.002   140.92
1915.00    1.995   140.30
1916.00    1.987   139.68
1917.00    1.980   139.06
1918.00    1.972   138.43
1919.00    1.964   137.80
1920.00    1.957   137.16
1921.00    1.949   136.51
1922.00    1.941   135.86
1923.00    1.933   135.21
1924.00    1.925   134.55
1925.00    1.917   133.89
1926.00    1.909   133.21
1927.00    1.901   132.54
1928.00    1.893   131.86
1929.00    1.885   131.17
1930.00    1.877   130.47
1931.00    1.868   129.77
1932.00    1.860   129.07
1933.00    1.852   128.35
1934.00    1.844   127.63
1935.00    1.835   126.91
1936.00    1.827   126.18
1937.00    1.819   125.44
1938.00    1.811   124.69
1939.00    1.802   123.94
1940.00    1.794   123.18
1941.00    1.786   122.41
1942.00    1.778   121.64
1943.00    1.769   120.86
1944.00    1.761   120.07
1945.00    1.753   119.28
1946.00    1.745   118.47
1947.00    1.737   117.66
1948.00    1.729   116.84
1949.00    1.721   116.02
1950.00    1.713   115.19
1951.00    1.705   114.34
1952.00    1.697   113.50
1953.00    1.689   112.64
1954.00    1.682   111.78
1955.00    1.674   110.90
1956.00    1.667   110.02
1957.00    1.659   109.14
1958.00    1.652   108.24
1959.00    1.645   107.34
1960.00    1.638   106.42
1961.00    1.631   105.50
1962.00    1.624   104.58
1963.00    1.617   103.64
1964.00    1.610   102.70
1965.00    1.604   101.75
1966.00    1.597   100.79
1967.00    1.591    99.82
1968.00    1.585    98.85
1969.00    1.579    97.87
1970.00    1.573    96.88
1971.00    1.567    95.88
1972.00    1.562    94.88
1973.00    1.556    93.87
1974.00    1.551    92.85
1975.00    1.546    91.83
1976.00    1.541    90.79
1977.00    1.536    89.76
1978.00    1.532    88.71
1979.00    1.527    87.66
1980.00    1.523    86.61
1981.00    1.519    85.55
1982.00    1.515    84.48
1983.00    1.511    83.41
1984.00    1.508    82.33
1985.00    1.505    81.25
1986.00    1.502    80.16
1987.00    1.499    79.07
1988.00    1.496    77.97
1989.00    1.493    76.87
1990.00    1.491    75.77
1991.00    1.489    74.67
1992.00    1.487    73.56
1993.00    1.485    72.44
1994.00    1.484    71.33
1995.00    1.482    70.21
1996.00    1.481    69.09
1997.00    1.480    67.97
1998.00    1.479    66.85
1999.00    1.478    65.73
2000.00    1.478    64.61
2001.00    1.478    63.48
2002.00    1.477    62.36
2003.00    1.477    61.23
2004.00    1.478    60.11
2005.00    1.478    58.98
2006.00    1.478    57.86
2007.00    1.479    56.73
2008.00    1.480    55.61
2009.00    1.481    54.49
2010.00    1.482    53.37
2011.00    1.483    52.25
2012.00    1.484    51.14
2013.00    1.486    50.03
2014.00    1.487    48.91
2015.00    1.489    47.80
2016.00    1.490    46.70
2017.00    1.492    45.59
2018.00    1.494    44.49
2019.00    1.496    43.39
2020.00    1.498    42.30
2021.00    1.500    41.20
2022.00    1.502    40.11
2023.00    1.504    39.02
2024.00    1.506    37.94
2025.00    1.508    36.86
2026.00    1.510    35.78
2027.00    1.512    34.71
2028.00    1.514    33.63
2029.00    1.517    32.56
2030.00    1.519    31.50
2031.00    1.521    30.43
2032.00    1.523    29.37
2033.00    1.525    28.32
2034.00    1.526    27.26
2035.00    1.528    26.21
2036.00    1.530    25.16
2037.00    1.532    24.11
2038.00    1.533    23.06
2039.00    1.535    22.02
2040.00    1.536    20.98
2041.00    1.537    19.94
2042.00    1.538    18.90
2043.00    1.539    17.86
2044.00    1.540    16.83
2045.00    1.541    15.79
2046.00    1.541    14.76
2047.00    1.542    13.72
2048.00    1.542    12.69
2049.00    1.542    11.66
2050.00    1.542    10.62
2051.00    1.541     9.59
2052.00    1.541     8.56
2053.00    1.540     7.52
2054.00    1.539     6.49
2055.00    1.538     5.45
2056.00    1.536     4.41
2057.00    1.535     3.37
2058.00    1.533     2.32
2059.00    1.531     1.28
2060.00    1.529     0.23
2061.00    1.526   359.18
2062.00    1.524   358.12
2063.00    1.521   357.06
2064.00    1.518   356.00
2065.00    1.514   354.93
2066.00    1.511   353.85
2067.00    1.507   352.78
2068.00    1.503   351.69
2069.00    1.499   350.60
2070.00    1.494   349.51
2071.00    1.490   348.40
2072.00    1.485   347.29
2073.00    1.480   346.17
2074.00    1.475   345.05
2075.00    1.469   343.92
2076.00    1.464   342.78
2077.00    1.458   341.62
2078.00    1.452   340.47
2079.00    1.446   339.30
2080.00    1.440   338.12
2081.00    1.434   336.93
2082.00    1.428   335.73
2083.00    1.421   334.52
2084.00    1.414   333.30
2085.00    1.408   332.06
2086.00    1.401   330.82
2087.00    1.394   329.56
2088.00    1.388   328.29
2089.00    1.381   327.01
2090.00    1.374   325.71
2091.00    1.367   324.41
2092.00    1.360   323.09
2093.00    1.353   321.75
2094.00    1.347   320.41
2095.00    1.340   319.05
2096.00    1.334   317.67
2097.00    1.327   316.28
2098.00    1.321   314.88
2099.00    1.315   313.47
2100.00    1.309   312.04
2101.00    1.303   310.60
2102.00    1.297   309.15
2103.00    1.292   307.68
2104.00    1.287   306.21
2105.00    1.282   304.72
2106.00    1.277   303.22
2107.00    1.273   301.71
2108.00    1.269   300.19
2109.00    1.265   298.66
2110.00    1.262   297.12
2111.00    1.259   295.57
2112.00    1.256   294.02
2113.00    1.253   292.46
2114.00    1.251   290.89
2115.00    1.250   289.32
2116.00    1.249   287.75
2117.00    1.248   286.17
2118.00    1.247   284.60
2119.00    1.247   283.02
2120.00    1.248   281.44
2121.00    1.249   279.86
2122.00    1.250   278.29
2123.00    1.252   276.72
2124.00    1.254   275.16
2125.00    1.256   273.60
2126.00    1.259   272.04
2127.00    1.263   270.50
2128.00    1.266   268.96
2129.00    1.271   267.44
2130.00    1.275   265.92
2131.00    1.280   264.42
2132.00    1.286   262.93
2133.00    1.292   261.45
2134.00    1.298   259.98
2135.00    1.304   258.53
2136.00    1.311   257.10
2137.00    1.319   255.67
2138.00    1.326   254.27
2139.00    1.334   252.88
2140.00    1.342   251.51
2141.00    1.351   250.16
2142.00    1.360   248.82
2143.00    1.369   247.50
2144.00    1.378   246.20
2145.00    1.388   244.91
2146.00    1.398   243.65
2147.00    1.408   242.40
2148.00    1.418   241.17
2149.00    1.429   239.96
2150.00    1.439   238.76
2151.00    1.450   237.59
2152.00    1.461   236.43
2153.00    1.472   235.29
2154.00    1.484   234.16
2155.00    1.495   233.05
2156.00    1.507   231.96
2157.00    1.518   230.89
2158.00    1.530   229.83
2159.00    1.542   228.79
2160.00    1.554   227.77
2161.00    1.566   226.76
2162.00    1.578   225.76
2163.00    1.590   224.78
2164.00    1.602   223.82
2165.00    1.614   222.87
2166.00    1.626   221.93
2167.00    1.638   221.01
2168.00    1.650   220.10
2169.00    1.662   219.21
2170.00    1.674   218.33
2171.00    1.687   217.46
2172.00    1.699   216.60
2173.00    1.711   215.75
2174.00    1.722   214.92
2175.00    1.734   214.10
2176.00    1.746   213.29
2177.00    1.758   212.49
2178.00    1.770   211.70
2179.00    1.781   210.92
2180.00    1.793   210.15
2181.00    1.804   209.39
2182.00    1.815   208.64
2183.00    1.827   207.90
2184.00    1.838   207.17
2185.00    1.849   206.45
2186.00    1.860   205.73
2187.00    1.870   205.03
2188.00    1.881   204.33
2189.00    1.892   203.64
2190.00    1.902   202.95
2191.00    1.912   202.28
2192.00    1.922   201.61
2193.00    1.932   200.95
2194.00    1.942   200.30
2195.00    1.952   199.65
2196.00    1.962   199.01
2197.00    1.971   198.37
2198.00    1.980   197.74
2199.00    1.989   197.12
2200.00    1.998   196.50
2201.00    2.007   195.89
2202.00    2.016   195.28
2203.00    2.024   194.68
2204.00    2.033   194.08
2205.00    2.041   193.49
2206.00    2.049   192.90
2207.00    2.056   192.32
2208.00    2.064   191.74
2209.00    2.072   191.17
2210.00    2.079   190.60
2211.00    2.086   190.03
2212.00    2.093   189.47
2213.00    2.100   188.91
2214.00    2.106   188.36
2215.00    2.113   187.80
2216.00    2.119   187.26
2217.00    2.125   186.71
2218.00    2.131   186.17
2219.00    2.137   185.63






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 17:35:11



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