Double Star Calculator - Orbit

Orbital Elements for A2771
WDS: A2771 WDS ID/Discoverer
P: 549.000 Orbital period (years)
a: 1.016 Semi-major axis (arcseconds)
i: 131.4 Inclination (degrees)
Ω: 288.6 Longitude of ascending node (degrees)
T: 1993.470 Epoch of periastron passage (year)
e: 0.834 Eccentricity
ω: 52.8 Longitude of periastron (degrees)
Start-Year: 1750.5 Year
End-Year: 2299.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A2771
Position: 104438.71+052955.0 Epoch-2000 right ascension and declination
WDS-ID: 10446+0530 WDS designation
Discoverer Code: A2771 Discover designation and components
ADS number: 7911 Aitken Double Star catalog
HD number: 93017 HD catalog number
Hipparcos number: 52547 Hipparcos catalog number
V1: 9.18 Magnitude of the primary
V2: 9.70 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: Flags
Ephemerides: Ephemerides
Code: Tok2014a Reference

Double Star Orbit for A2771



WDS 6th Orbit including measures of A2771

-- 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 A2771
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.657   107.15
--------------------------
1750.50    1.444    63.94
1751.50    1.442    63.82
1752.50    1.440    63.70
1753.50    1.438    63.58
1754.50    1.436    63.46
1755.50    1.434    63.34
1756.50    1.432    63.22
1757.50    1.430    63.10
1758.50    1.427    62.98
1759.50    1.425    62.86
1760.50    1.423    62.74
1761.50    1.421    62.61
1762.50    1.418    62.49
1763.50    1.416    62.37
1764.50    1.414    62.24
1765.50    1.411    62.12
1766.50    1.409    62.00
1767.50    1.407    61.87
1768.50    1.404    61.75
1769.50    1.402    61.62
1770.50    1.399    61.50
1771.50    1.397    61.37
1772.50    1.394    61.24
1773.50    1.392    61.11
1774.50    1.389    60.99
1775.50    1.386    60.86
1776.50    1.384    60.73
1777.50    1.381    60.60
1778.50    1.378    60.47
1779.50    1.376    60.34
1780.50    1.373    60.21
1781.50    1.370    60.08
1782.50    1.367    59.95
1783.50    1.365    59.81
1784.50    1.362    59.68
1785.50    1.359    59.55
1786.50    1.356    59.41
1787.50    1.353    59.28
1788.50    1.350    59.14
1789.50    1.347    59.01
1790.50    1.344    58.87
1791.50    1.341    58.74
1792.50    1.338    58.60
1793.50    1.335    58.46
1794.50    1.332    58.32
1795.50    1.329    58.18
1796.50    1.326    58.04
1797.50    1.323    57.90
1798.50    1.319    57.76
1799.50    1.316    57.62
1800.50    1.313    57.47
1801.50    1.310    57.33
1802.50    1.306    57.19
1803.50    1.303    57.04
1804.50    1.300    56.89
1805.50    1.296    56.75
1806.50    1.293    56.60
1807.50    1.290    56.45
1808.50    1.286    56.30
1809.50    1.283    56.15
1810.50    1.279    56.00
1811.50    1.276    55.85
1812.50    1.272    55.70
1813.50    1.269    55.55
1814.50    1.265    55.39
1815.50    1.261    55.24
1816.50    1.258    55.08
1817.50    1.254    54.93
1818.50    1.250    54.77
1819.50    1.247    54.61
1820.50    1.243    54.45
1821.50    1.239    54.29
1822.50    1.235    54.13
1823.50    1.231    53.97
1824.50    1.228    53.80
1825.50    1.224    53.64
1826.50    1.220    53.47
1827.50    1.216    53.31
1828.50    1.212    53.14
1829.50    1.208    52.97
1830.50    1.204    52.80
1831.50    1.200    52.63
1832.50    1.196    52.46
1833.50    1.192    52.28
1834.50    1.188    52.11
1835.50    1.183    51.93
1836.50    1.179    51.76
1837.50    1.175    51.58
1838.50    1.171    51.40
1839.50    1.167    51.22
1840.50    1.162    51.04
1841.50    1.158    50.85
1842.50    1.154    50.67
1843.50    1.149    50.48
1844.50    1.145    50.29
1845.50    1.141    50.10
1846.50    1.136    49.91
1847.50    1.132    49.72
1848.50    1.127    49.53
1849.50    1.123    49.33
1850.50    1.118    49.14
1851.50    1.114    48.94
1852.50    1.109    48.74
1853.50    1.104    48.54
1854.50    1.100    48.33
1855.50    1.095    48.13
1856.50    1.090    47.92
1857.50    1.086    47.71
1858.50    1.081    47.50
1859.50    1.076    47.29
1860.50    1.071    47.08
1861.50    1.066    46.86
1862.50    1.062    46.64
1863.50    1.057    46.42
1864.50    1.052    46.20
1865.50    1.047    45.97
1866.50    1.042    45.75
1867.50    1.037    45.52
1868.50    1.032    45.29
1869.50    1.027    45.06
1870.50    1.022    44.82
1871.50    1.017    44.58
1872.50    1.011    44.34
1873.50    1.006    44.10
1874.50    1.001    43.85
1875.50    0.996    43.61
1876.50    0.991    43.36
1877.50    0.985    43.10
1878.50    0.980    42.85
1879.50    0.975    42.59
1880.50    0.969    42.33
1881.50    0.964    42.06
1882.50    0.958    41.80
1883.50    0.953    41.53
1884.50    0.948    41.25
1885.50    0.942    40.98
1886.50    0.937    40.70
1887.50    0.931    40.41
1888.50    0.925    40.13
1889.50    0.920    39.84
1890.50    0.914    39.54
1891.50    0.908    39.24
1892.50    0.903    38.94
1893.50    0.897    38.64
1894.50    0.891    38.33
1895.50    0.885    38.02
1896.50    0.880    37.70
1897.50    0.874    37.38
1898.50    0.868    37.05
1899.50    0.862    36.72
1900.50    0.856    36.39
1901.50    0.850    36.05
1902.50    0.844    35.70
1903.50    0.838    35.35
1904.50    0.832    35.00
1905.50    0.826    34.64
1906.50    0.820    34.27
1907.50    0.814    33.90
1908.50    0.807    33.53
1909.50    0.801    33.15
1910.50    0.795    32.76
1911.50    0.789    32.36
1912.50    0.782    31.96
1913.50    0.776    31.56
1914.50    0.770    31.14
1915.50    0.763    30.72
1916.50    0.757    30.30
1917.50    0.750    29.86
1918.50    0.744    29.42
1919.50    0.737    28.97
1920.50    0.731    28.51
1921.50    0.724    28.04
1922.50    0.718    27.57
1923.50    0.711    27.08
1924.50    0.705    26.59
1925.50    0.698    26.09
1926.50    0.691    25.58
1927.50    0.684    25.06
1928.50    0.678    24.52
1929.50    0.671    23.98
1930.50    0.664    23.43
1931.50    0.657    22.86
1932.50    0.650    22.28
1933.50    0.644    21.69
1934.50    0.637    21.09
1935.50    0.630    20.47
1936.50    0.623    19.84
1937.50    0.616    19.20
1938.50    0.609    18.54
1939.50    0.602    17.87
1940.50    0.595    17.17
1941.50    0.588    16.47
1942.50    0.580    15.74
1943.50    0.573    15.00
1944.50    0.566    14.24
1945.50    0.559    13.46
1946.50    0.552    12.66
1947.50    0.544    11.84
1948.50    0.537    10.99
1949.50    0.530    10.12
1950.50    0.523     9.23
1951.50    0.515     8.32
1952.50    0.508     7.37
1953.50    0.501     6.40
1954.50    0.493     5.40
1955.50    0.486     4.37
1956.50    0.479     3.31
1957.50    0.471     2.22
1958.50    0.464     1.09
1959.50    0.456   359.92
1960.50    0.449   358.71
1961.50    0.441   357.47
1962.50    0.434   356.18
1963.50    0.427   354.84
1964.50    0.419   353.46
1965.50    0.412   352.03
1966.50    0.404   350.54
1967.50    0.396   349.00
1968.50    0.389   347.40
1969.50    0.381   345.74
1970.50    0.374   344.00
1971.50    0.366   342.20
1972.50    0.358   340.32
1973.50    0.351   338.35
1974.50    0.343   336.30
1975.50    0.335   334.15
1976.50    0.327   331.90
1977.50    0.319   329.54
1978.50    0.311   327.05
1979.50    0.303   324.43
1980.50    0.294   321.67
1981.50    0.286   318.73
1982.50    0.277   315.61
1983.50    0.267   312.27
1984.50    0.257   308.68
1985.50    0.247   304.79
1986.50    0.236   300.55
1987.50    0.224   295.86
1988.50    0.211   290.62
1989.50    0.196   284.65
1990.50    0.181   277.71
1991.50    0.165   269.46
1992.50    0.149   259.44
1993.50    0.135   247.13
1994.50    0.124   232.29
1995.50    0.120   215.51
1996.50    0.123   198.55
1997.50    0.133   183.35
1998.50    0.149   170.89
1999.50    0.169   161.05
2000.50    0.190   153.33
2001.50    0.212   147.20
2002.50    0.235   142.24
2003.50    0.257   138.15
2004.50    0.279   134.71
2005.50    0.301   131.78
2006.50    0.322   129.24
2007.50    0.343   127.01
2008.50    0.364   125.03
2009.50    0.383   123.26
2010.50    0.403   121.66
2011.50    0.422   120.20
2012.50    0.440   118.87
2013.50    0.458   117.65
2014.50    0.475   116.51
2015.50    0.492   115.45
2016.50    0.509   114.47
2017.50    0.525   113.54
2018.50    0.541   112.68
2019.50    0.557   111.86
2020.50    0.572   111.08
2021.50    0.587   110.34
2022.50    0.601   109.64
2023.50    0.616   108.98
2024.50    0.630   108.34
2025.50    0.643   107.73
2026.50    0.657   107.15
2027.50    0.670   106.58
2028.50    0.683   106.05
2029.50    0.696   105.53
2030.50    0.708   105.02
2031.50    0.721   104.54
2032.50    0.733   104.07
2033.50    0.745   103.62
2034.50    0.756   103.18
2035.50    0.768   102.76
2036.50    0.779   102.34
2037.50    0.790   101.94
2038.50    0.801   101.55
2039.50    0.812   101.17
2040.50    0.823   100.80
2041.50    0.833   100.44
2042.50    0.844   100.09
2043.50    0.854    99.75
2044.50    0.864    99.42
2045.50    0.874    99.09
2046.50    0.883    98.77
2047.50    0.893    98.45
2048.50    0.902    98.15
2049.50    0.911    97.85
2050.50    0.921    97.55
2051.50    0.930    97.26
2052.50    0.939    96.98
2053.50    0.947    96.70
2054.50    0.956    96.43
2055.50    0.965    96.16
2056.50    0.973    95.90
2057.50    0.981    95.64
2058.50    0.990    95.39
2059.50    0.998    95.14
2060.50    1.006    94.89
2061.50    1.014    94.65
2062.50    1.021    94.41
2063.50    1.029    94.18
2064.50    1.037    93.94
2065.50    1.044    93.72
2066.50    1.052    93.49
2067.50    1.059    93.27
2068.50    1.066    93.05
2069.50    1.073    92.83
2070.50    1.080    92.62
2071.50    1.087    92.41
2072.50    1.094    92.20
2073.50    1.101    92.00
2074.50    1.108    91.80
2075.50    1.114    91.60
2076.50    1.121    91.40
2077.50    1.127    91.20
2078.50    1.134    91.01
2079.50    1.140    90.82
2080.50    1.146    90.63
2081.50    1.152    90.44
2082.50    1.158    90.26
2083.50    1.164    90.07
2084.50    1.170    89.89
2085.50    1.176    89.71
2086.50    1.182    89.53
2087.50    1.188    89.36
2088.50    1.193    89.18
2089.50    1.199    89.01
2090.50    1.204    88.84
2091.50    1.210    88.67
2092.50    1.215    88.50
2093.50    1.220    88.34
2094.50    1.226    88.17
2095.50    1.231    88.01
2096.50    1.236    87.85
2097.50    1.241    87.68
2098.50    1.246    87.52
2099.50    1.251    87.37
2100.50    1.256    87.21
2101.50    1.261    87.05
2102.50    1.265    86.90
2103.50    1.270    86.74
2104.50    1.275    86.59
2105.50    1.279    86.44
2106.50    1.284    86.29
2107.50    1.288    86.14
2108.50    1.293    85.99
2109.50    1.297    85.84
2110.50    1.301    85.70
2111.50    1.306    85.55
2112.50    1.310    85.41
2113.50    1.314    85.27
2114.50    1.318    85.12
2115.50    1.322    84.98
2116.50    1.326    84.84
2117.50    1.330    84.70
2118.50    1.334    84.56
2119.50    1.338    84.42
2120.50    1.342    84.28
2121.50    1.345    84.15
2122.50    1.349    84.01
2123.50    1.353    83.88
2124.50    1.356    83.74
2125.50    1.360    83.61
2126.50    1.363    83.47
2127.50    1.367    83.34
2128.50    1.370    83.21
2129.50    1.374    83.08
2130.50    1.377    82.95
2131.50    1.380    82.82
2132.50    1.383    82.69
2133.50    1.387    82.56
2134.50    1.390    82.43
2135.50    1.393    82.30
2136.50    1.396    82.18
2137.50    1.399    82.05
2138.50    1.402    81.92
2139.50    1.405    81.80
2140.50    1.408    81.67
2141.50    1.410    81.55
2142.50    1.413    81.43
2143.50    1.416    81.30
2144.50    1.419    81.18
2145.50    1.421    81.06
2146.50    1.424    80.94
2147.50    1.427    80.81
2148.50    1.429    80.69
2149.50    1.432    80.57
2150.50    1.434    80.45
2151.50    1.437    80.33
2152.50    1.439    80.21
2153.50    1.441    80.09
2154.50    1.444    79.97
2155.50    1.446    79.86
2156.50    1.448    79.74
2157.50    1.450    79.62
2158.50    1.453    79.50
2159.50    1.455    79.39
2160.50    1.457    79.27
2161.50    1.459    79.15
2162.50    1.461    79.04
2163.50    1.463    78.92
2164.50    1.465    78.81
2165.50    1.467    78.69
2166.50    1.469    78.58
2167.50    1.470    78.46
2168.50    1.472    78.35
2169.50    1.474    78.24
2170.50    1.476    78.12
2171.50    1.477    78.01
2172.50    1.479    77.90
2173.50    1.481    77.78
2174.50    1.482    77.67
2175.50    1.484    77.56
2176.50    1.485    77.45
2177.50    1.487    77.33
2178.50    1.488    77.22
2179.50    1.490    77.11
2180.50    1.491    77.00
2181.50    1.492    76.89
2182.50    1.494    76.78
2183.50    1.495    76.67
2184.50    1.496    76.56
2185.50    1.497    76.45
2186.50    1.499    76.34
2187.50    1.500    76.23
2188.50    1.501    76.12
2189.50    1.502    76.01
2190.50    1.503    75.90
2191.50    1.504    75.79
2192.50    1.505    75.68
2193.50    1.506    75.57
2194.50    1.507    75.46
2195.50    1.508    75.35
2196.50    1.509    75.24
2197.50    1.509    75.14
2198.50    1.510    75.03
2199.50    1.511    74.92
2200.50    1.512    74.81
2201.50    1.512    74.70
2202.50    1.513    74.59
2203.50    1.514    74.49
2204.50    1.514    74.38
2205.50    1.515    74.27
2206.50    1.515    74.16
2207.50    1.516    74.06
2208.50    1.516    73.95
2209.50    1.517    73.84
2210.50    1.517    73.73
2211.50    1.518    73.63
2212.50    1.518    73.52
2213.50    1.518    73.41
2214.50    1.519    73.31
2215.50    1.519    73.20
2216.50    1.519    73.09
2217.50    1.519    72.98
2218.50    1.520    72.88
2219.50    1.520    72.77
2220.50    1.520    72.66
2221.50    1.520    72.56
2222.50    1.520    72.45
2223.50    1.520    72.34
2224.50    1.520    72.24
2225.50    1.520    72.13
2226.50    1.520    72.02
2227.50    1.520    71.92
2228.50    1.520    71.81
2229.50    1.520    71.70
2230.50    1.520    71.59
2231.50    1.520    71.49
2232.50    1.519    71.38
2233.50    1.519    71.27
2234.50    1.519    71.17
2235.50    1.519    71.06
2236.50    1.518    70.95
2237.50    1.518    70.85
2238.50    1.517    70.74
2239.50    1.517    70.63
2240.50    1.517    70.52
2241.50    1.516    70.42
2242.50    1.516    70.31
2243.50    1.515    70.20
2244.50    1.515    70.09
2245.50    1.514    69.99
2246.50    1.513    69.88
2247.50    1.513    69.77
2248.50    1.512    69.66
2249.50    1.512    69.55
2250.50    1.511    69.45
2251.50    1.510    69.34
2252.50    1.509    69.23
2253.50    1.509    69.12
2254.50    1.508    69.01
2255.50    1.507    68.90
2256.50    1.506    68.79
2257.50    1.505    68.69
2258.50    1.504    68.58
2259.50    1.503    68.47
2260.50    1.502    68.36
2261.50    1.501    68.25
2262.50    1.500    68.14
2263.50    1.499    68.03
2264.50    1.498    67.92
2265.50    1.497    67.81
2266.50    1.496    67.70
2267.50    1.495    67.59
2268.50    1.494    67.48
2269.50    1.492    67.37
2270.50    1.491    67.26
2271.50    1.490    67.14
2272.50    1.489    67.03
2273.50    1.487    66.92
2274.50    1.486    66.81
2275.50    1.485    66.70
2276.50    1.483    66.59
2277.50    1.482    66.47
2278.50    1.480    66.36
2279.50    1.479    66.25
2280.50    1.477    66.13
2281.50    1.476    66.02
2282.50    1.474    65.91
2283.50    1.473    65.79
2284.50    1.471    65.68
2285.50    1.469    65.57
2286.50    1.468    65.45
2287.50    1.466    65.34
2288.50    1.464    65.22
2289.50    1.463    65.11
2290.50    1.461    64.99
2291.50    1.459    64.87
2292.50    1.457    64.76
2293.50    1.456    64.64
2294.50    1.454    64.53
2295.50    1.452    64.41
2296.50    1.450    64.29
2297.50    1.448    64.17
2298.50    1.446    64.06






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 16:30:13



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