Double Star Calculator - Orbit

Orbital Elements for HDO295
WDS: HDO295 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.862 Semi-major axis (arcseconds)
i: 66.4 Inclination (degrees)
Ω: 93.9 Longitude of ascending node (degrees)
T: 2030.100 Epoch of periastron passage (year)
e: 0.6 Eccentricity
ω: 262.5 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDO295
Position: 201107.43-573127.3 Epoch-2000 right ascension and declination
WDS-ID: 20111-5731 WDS designation
Discoverer Code: HDO295 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 191095 HD catalog number
Hipparcos number: 99453 Hipparcos catalog number
V1: 6.76 Magnitude of the primary
V2: 7.68 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 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: Tok2021f Reference

Double Star Orbit for HDO295



WDS 6th Orbit including measures of HDO295

-- 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 HDO295
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.178   321.04
--------------------------
1775.00    0.584   163.10
1776.00    0.582   163.60
1777.00    0.581   164.11
1778.00    0.579   164.62
1779.00    0.578   165.13
1780.00    0.576   165.65
1781.00    0.575   166.16
1782.00    0.574   166.68
1783.00    0.572   167.20
1784.00    0.571   167.73
1785.00    0.570   168.25
1786.00    0.568   168.78
1787.00    0.567   169.32
1788.00    0.566   169.85
1789.00    0.565   170.39
1790.00    0.564   170.92
1791.00    0.562   171.46
1792.00    0.561   172.01
1793.00    0.560   172.55
1794.00    0.559   173.10
1795.00    0.558   173.65
1796.00    0.557   174.20
1797.00    0.556   174.75
1798.00    0.555   175.31
1799.00    0.554   175.86
1800.00    0.554   176.42
1801.00    0.553   176.98
1802.00    0.552   177.54
1803.00    0.551   178.11
1804.00    0.550   178.67
1805.00    0.550   179.24
1806.00    0.549   179.80
1807.00    0.548   180.37
1808.00    0.548   180.94
1809.00    0.547   181.52
1810.00    0.547   182.09
1811.00    0.546   182.66
1812.00    0.546   183.24
1813.00    0.545   183.81
1814.00    0.545   184.39
1815.00    0.544   184.97
1816.00    0.544   185.55
1817.00    0.544   186.12
1818.00    0.544   186.70
1819.00    0.543   187.29
1820.00    0.543   187.87
1821.00    0.543   188.45
1822.00    0.543   189.03
1823.00    0.543   189.61
1824.00    0.543   190.19
1825.00    0.542   190.77
1826.00    0.542   191.36
1827.00    0.543   191.94
1828.00    0.543   192.52
1829.00    0.543   193.10
1830.00    0.543   193.69
1831.00    0.543   194.27
1832.00    0.543   194.85
1833.00    0.543   195.43
1834.00    0.544   196.01
1835.00    0.544   196.59
1836.00    0.544   197.17
1837.00    0.545   197.74
1838.00    0.545   198.32
1839.00    0.545   198.90
1840.00    0.546   199.47
1841.00    0.546   200.05
1842.00    0.547   200.62
1843.00    0.547   201.20
1844.00    0.548   201.77
1845.00    0.549   202.34
1846.00    0.549   202.91
1847.00    0.550   203.47
1848.00    0.550   204.04
1849.00    0.551   204.60
1850.00    0.552   205.17
1851.00    0.553   205.73
1852.00    0.554   206.29
1853.00    0.554   206.85
1854.00    0.555   207.40
1855.00    0.556   207.96
1856.00    0.557   208.51
1857.00    0.558   209.06
1858.00    0.559   209.61
1859.00    0.560   210.16
1860.00    0.561   210.71
1861.00    0.562   211.25
1862.00    0.563   211.79
1863.00    0.564   212.33
1864.00    0.565   212.87
1865.00    0.566   213.41
1866.00    0.567   213.94
1867.00    0.568   214.47
1868.00    0.570   215.00
1869.00    0.571   215.53
1870.00    0.572   216.05
1871.00    0.573   216.57
1872.00    0.575   217.09
1873.00    0.576   217.61
1874.00    0.577   218.13
1875.00    0.578   218.64
1876.00    0.580   219.15
1877.00    0.581   219.66
1878.00    0.582   220.17
1879.00    0.584   220.67
1880.00    0.585   221.17
1881.00    0.586   221.67
1882.00    0.588   222.17
1883.00    0.589   222.66
1884.00    0.591   223.16
1885.00    0.592   223.65
1886.00    0.593   224.13
1887.00    0.595   224.62
1888.00    0.596   225.10
1889.00    0.598   225.58
1890.00    0.599   226.06
1891.00    0.601   226.54
1892.00    0.602   227.01
1893.00    0.604   227.48
1894.00    0.605   227.95
1895.00    0.607   228.42
1896.00    0.608   228.88
1897.00    0.610   229.34
1898.00    0.611   229.80
1899.00    0.612   230.26
1900.00    0.614   230.72
1901.00    0.615   231.17
1902.00    0.617   231.62
1903.00    0.618   232.07
1904.00    0.620   232.52
1905.00    0.621   232.96
1906.00    0.623   233.41
1907.00    0.624   233.85
1908.00    0.625   234.29
1909.00    0.627   234.73
1910.00    0.628   235.16
1911.00    0.630   235.59
1912.00    0.631   236.02
1913.00    0.632   236.45
1914.00    0.634   236.88
1915.00    0.635   237.31
1916.00    0.636   237.73
1917.00    0.638   238.15
1918.00    0.639   238.57
1919.00    0.640   238.99
1920.00    0.641   239.41
1921.00    0.643   239.83
1922.00    0.644   240.24
1923.00    0.645   240.65
1924.00    0.646   241.07
1925.00    0.647   241.48
1926.00    0.648   241.88
1927.00    0.649   242.29
1928.00    0.650   242.70
1929.00    0.651   243.10
1930.00    0.652   243.50
1931.00    0.653   243.91
1932.00    0.654   244.31
1933.00    0.655   244.71
1934.00    0.656   245.11
1935.00    0.656   245.51
1936.00    0.657   245.90
1937.00    0.658   246.30
1938.00    0.659   246.69
1939.00    0.659   247.09
1940.00    0.660   247.48
1941.00    0.660   247.88
1942.00    0.661   248.27
1943.00    0.661   248.66
1944.00    0.661   249.05
1945.00    0.662   249.45
1946.00    0.662   249.84
1947.00    0.662   250.23
1948.00    0.662   250.62
1949.00    0.662   251.01
1950.00    0.662   251.40
1951.00    0.662   251.79
1952.00    0.662   252.18
1953.00    0.662   252.57
1954.00    0.661   252.96
1955.00    0.661   253.36
1956.00    0.661   253.75
1957.00    0.660   254.14
1958.00    0.659   254.54
1959.00    0.659   254.93
1960.00    0.658   255.32
1961.00    0.657   255.72
1962.00    0.656   256.12
1963.00    0.655   256.52
1964.00    0.654   256.92
1965.00    0.653   257.32
1966.00    0.651   257.72
1967.00    0.650   258.13
1968.00    0.648   258.53
1969.00    0.646   258.94
1970.00    0.644   259.36
1971.00    0.642   259.77
1972.00    0.640   260.19
1973.00    0.638   260.60
1974.00    0.636   261.03
1975.00    0.633   261.45
1976.00    0.631   261.88
1977.00    0.628   262.32
1978.00    0.625   262.75
1979.00    0.622   263.19
1980.00    0.618   263.64
1981.00    0.615   264.09
1982.00    0.611   264.55
1983.00    0.607   265.01
1984.00    0.603   265.48
1985.00    0.599   265.95
1986.00    0.595   266.43
1987.00    0.590   266.92
1988.00    0.585   267.42
1989.00    0.580   267.92
1990.00    0.575   268.43
1991.00    0.569   268.96
1992.00    0.563   269.49
1993.00    0.557   270.04
1994.00    0.551   270.60
1995.00    0.544   271.17
1996.00    0.538   271.75
1997.00    0.530   272.35
1998.00    0.523   272.97
1999.00    0.515   273.61
2000.00    0.507   274.26
2001.00    0.499   274.94
2002.00    0.490   275.64
2003.00    0.481   276.37
2004.00    0.472   277.12
2005.00    0.462   277.91
2006.00    0.452   278.73
2007.00    0.441   279.59
2008.00    0.430   280.49
2009.00    0.419   281.45
2010.00    0.407   282.45
2011.00    0.395   283.51
2012.00    0.383   284.65
2013.00    0.370   285.86
2014.00    0.357   287.15
2015.00    0.343   288.55
2016.00    0.329   290.07
2017.00    0.315   291.72
2018.00    0.301   293.53
2019.00    0.286   295.52
2020.00    0.271   297.72
2021.00    0.256   300.19
2022.00    0.241   302.96
2023.00    0.227   306.09
2024.00    0.212   309.66
2025.00    0.198   313.74
2026.00    0.185   318.44
2027.00    0.172   323.84
2028.00    0.161   330.03
2029.00    0.152   337.05
2030.00    0.145   344.87
2031.00    0.140   353.36
2032.00    0.138     2.22
2033.00    0.140    11.10
2034.00    0.144    19.64
2035.00    0.151    27.53
2036.00    0.160    34.63
2037.00    0.171    40.89
2038.00    0.184    46.35
2039.00    0.197    51.10
2040.00    0.211    55.22
2041.00    0.226    58.81
2042.00    0.241    61.96
2043.00    0.256    64.74
2044.00    0.272    67.20
2045.00    0.287    69.40
2046.00    0.302    71.38
2047.00    0.317    73.17
2048.00    0.332    74.80
2049.00    0.347    76.29
2050.00    0.361    77.66
2051.00    0.375    78.92
2052.00    0.389    80.09
2053.00    0.403    81.19
2054.00    0.416    82.21
2055.00    0.429    83.17
2056.00    0.441    84.08
2057.00    0.454    84.93
2058.00    0.466    85.74
2059.00    0.477    86.51
2060.00    0.489    87.25
2061.00    0.500    87.95
2062.00    0.511    88.62
2063.00    0.521    89.27
2064.00    0.531    89.89
2065.00    0.541    90.48
2066.00    0.551    91.06
2067.00    0.560    91.61
2068.00    0.569    92.15
2069.00    0.578    92.67
2070.00    0.586    93.18
2071.00    0.595    93.67
2072.00    0.603    94.15
2073.00    0.611    94.61
2074.00    0.618    95.07
2075.00    0.625    95.51
2076.00    0.633    95.94
2077.00    0.640    96.37
2078.00    0.646    96.78
2079.00    0.653    97.19
2080.00    0.659    97.58
2081.00    0.665    97.98
2082.00    0.671    98.36
2083.00    0.677    98.74
2084.00    0.682    99.11
2085.00    0.688    99.47
2086.00    0.693    99.83
2087.00    0.698   100.19
2088.00    0.703   100.54
2089.00    0.708   100.88
2090.00    0.712   101.22
2091.00    0.717   101.56
2092.00    0.721   101.89
2093.00    0.725   102.22
2094.00    0.729   102.54
2095.00    0.733   102.86
2096.00    0.736   103.18
2097.00    0.740   103.49
2098.00    0.744   103.80
2099.00    0.747   104.11
2100.00    0.750   104.42
2101.00    0.753   104.72
2102.00    0.756   105.02
2103.00    0.759   105.32
2104.00    0.762   105.62
2105.00    0.764   105.91
2106.00    0.767   106.20
2107.00    0.769   106.49
2108.00    0.772   106.78
2109.00    0.774   107.07
2110.00    0.776   107.36
2111.00    0.778   107.64
2112.00    0.780   107.92
2113.00    0.782   108.20
2114.00    0.783   108.48
2115.00    0.785   108.76
2116.00    0.787   109.04
2117.00    0.788   109.32
2118.00    0.789   109.59
2119.00    0.791   109.87
2120.00    0.792   110.14
2121.00    0.793   110.41
2122.00    0.794   110.68
2123.00    0.795   110.96
2124.00    0.796   111.23
2125.00    0.797   111.50
2126.00    0.798   111.77
2127.00    0.798   112.03
2128.00    0.799   112.30
2129.00    0.800   112.57
2130.00    0.800   112.84
2131.00    0.801   113.11
2132.00    0.801   113.37
2133.00    0.801   113.64
2134.00    0.802   113.91
2135.00    0.802   114.17
2136.00    0.802   114.44
2137.00    0.802   114.71
2138.00    0.802   114.97
2139.00    0.802   115.24
2140.00    0.802   115.51
2141.00    0.802   115.77
2142.00    0.802   116.04
2143.00    0.801   116.31
2144.00    0.801   116.57
2145.00    0.801   116.84
2146.00    0.800   117.11
2147.00    0.800   117.37
2148.00    0.800   117.64
2149.00    0.799   117.91
2150.00    0.799   118.18
2151.00    0.798   118.45
2152.00    0.797   118.72
2153.00    0.797   118.99
2154.00    0.796   119.26
2155.00    0.795   119.53
2156.00    0.794   119.80
2157.00    0.793   120.07
2158.00    0.793   120.34
2159.00    0.792   120.62
2160.00    0.791   120.89
2161.00    0.790   121.17
2162.00    0.789   121.44
2163.00    0.788   121.72
2164.00    0.786   121.99
2165.00    0.785   122.27
2166.00    0.784   122.55
2167.00    0.783   122.83
2168.00    0.782   123.11
2169.00    0.780   123.39
2170.00    0.779   123.67
2171.00    0.778   123.95
2172.00    0.776   124.24
2173.00    0.775   124.52
2174.00    0.774   124.81
2175.00    0.772   125.09
2176.00    0.771   125.38
2177.00    0.769   125.67
2178.00    0.768   125.96
2179.00    0.766   126.25
2180.00    0.765   126.54
2181.00    0.763   126.84
2182.00    0.762   127.13
2183.00    0.760   127.43
2184.00    0.758   127.73
2185.00    0.757   128.02
2186.00    0.755   128.32
2187.00    0.753   128.63
2188.00    0.752   128.93
2189.00    0.750   129.23
2190.00    0.748   129.54
2191.00    0.746   129.85
2192.00    0.744   130.15
2193.00    0.743   130.46
2194.00    0.741   130.78
2195.00    0.739   131.09
2196.00    0.737   131.40
2197.00    0.735   131.72
2198.00    0.733   132.04
2199.00    0.731   132.36
2200.00    0.730   132.68
2201.00    0.728   133.00
2202.00    0.726   133.32
2203.00    0.724   133.65
2204.00    0.722   133.98
2205.00    0.720   134.31
2206.00    0.718   134.64
2207.00    0.716   134.97
2208.00    0.714   135.31
2209.00    0.712   135.65
2210.00    0.710   135.99
2211.00    0.708   136.33
2212.00    0.706   136.67
2213.00    0.704   137.01
2214.00    0.702   137.36
2215.00    0.700   137.71
2216.00    0.698   138.06
2217.00    0.695   138.42
2218.00    0.693   138.77
2219.00    0.691   139.13
2220.00    0.689   139.49
2221.00    0.687   139.85
2222.00    0.685   140.21
2223.00    0.683   140.58
2224.00    0.681   140.95
2225.00    0.679   141.32
2226.00    0.677   141.69
2227.00    0.675   142.07
2228.00    0.673   142.44
2229.00    0.671   142.82
2230.00    0.668   143.21
2231.00    0.666   143.59
2232.00    0.664   143.98
2233.00    0.662   144.37
2234.00    0.660   144.76
2235.00    0.658   145.15
2236.00    0.656   145.55
2237.00    0.654   145.95
2238.00    0.652   146.35
2239.00    0.650   146.76
2240.00    0.648   147.16
2241.00    0.646   147.57
2242.00    0.644   147.99
2243.00    0.642   148.40
2244.00    0.640   148.82
2245.00    0.638   149.24
2246.00    0.636   149.66
2247.00    0.634   150.09
2248.00    0.632   150.51
2249.00    0.630   150.94
2250.00    0.628   151.38
2251.00    0.626   151.81
2252.00    0.624   152.25
2253.00    0.622   152.69
2254.00    0.620   153.14
2255.00    0.618   153.58
2256.00    0.616   154.03
2257.00    0.614   154.49
2258.00    0.613   154.94
2259.00    0.611   155.40
2260.00    0.609   155.86
2261.00    0.607   156.32
2262.00    0.605   156.79
2263.00    0.604   157.26
2264.00    0.602   157.73
2265.00    0.600   158.20
2266.00    0.598   158.68
2267.00    0.597   159.16
2268.00    0.595   159.64
2269.00    0.593   160.13
2270.00    0.592   160.62
2271.00    0.590   161.11
2272.00    0.588   161.60
2273.00    0.587   162.10
2274.00    0.585   162.60






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 18:12:24



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