Double Star Calculator - Orbit

Orbital Elements for A802
WDS: A802 WDS ID/Discoverer
P: 269.520 Orbital period (years)
a: 0.26 Semi-major axis (arcseconds)
i: 108.8 Inclination (degrees)
Ω: 125.6 Longitude of ascending node (degrees)
T: 1972.510 Epoch of periastron passage (year)
e: 0.511 Eccentricity
ω: 266.6 Longitude of periastron (degrees)
Start-Year: 1890.24 Year
End-Year: 2159.76 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A802
Position: 001210.31+464629.7 Epoch-2000 right ascension and declination
WDS-ID: 00122+4647 WDS designation
Discoverer Code: A802 Discover designation and components
ADS number: 149 Aitken Double Star catalog
HD number: 764 HD catalog number
Hipparcos number: 984 Hipparcos catalog number
V1: 9.70 Magnitude of the primary
V2: 10.35 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1991 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Msn2001c Reference

Double Star Orbit for A802



WDS 6th Orbit including measures of A802

-- 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 A802
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.236   112.31
--------------------------
1890.24    0.180   340.01
1891.24    0.182   339.24
1892.24    0.183   338.49
1893.24    0.185   337.75
1894.24    0.187   337.03
1895.24    0.188   336.32
1896.24    0.190   335.62
1897.24    0.191   334.93
1898.24    0.193   334.25
1899.24    0.195   333.59
1900.24    0.196   332.93
1901.24    0.198   332.29
1902.24    0.199   331.65
1903.24    0.201   331.03
1904.24    0.202   330.41
1905.24    0.203   329.80
1906.24    0.205   329.20
1907.24    0.206   328.61
1908.24    0.207   328.02
1909.24    0.209   327.45
1910.24    0.210   326.88
1911.24    0.211   326.31
1912.24    0.212   325.75
1913.24    0.213   325.20
1914.24    0.214   324.65
1915.24    0.215   324.11
1916.24    0.216   323.57
1917.24    0.217   323.03
1918.24    0.217   322.50
1919.24    0.218   321.97
1920.24    0.219   321.45
1921.24    0.219   320.93
1922.24    0.220   320.41
1923.24    0.220   319.89
1924.24    0.220   319.37
1925.24    0.220   318.85
1926.24    0.220   318.34
1927.24    0.220   317.82
1928.24    0.220   317.31
1929.24    0.220   316.79
1930.24    0.220   316.27
1931.24    0.219   315.75
1932.24    0.218   315.23
1933.24    0.218   314.71
1934.24    0.217   314.18
1935.24    0.216   313.64
1936.24    0.215   313.10
1937.24    0.214   312.56
1938.24    0.212   312.00
1939.24    0.210   311.44
1940.24    0.209   310.88
1941.24    0.207   310.30
1942.24    0.205   309.70
1943.24    0.202   309.10
1944.24    0.200   308.48
1945.24    0.197   307.85
1946.24    0.194   307.19
1947.24    0.191   306.52
1948.24    0.188   305.82
1949.24    0.184   305.10
1950.24    0.180   304.34
1951.24    0.176   303.55
1952.24    0.171   302.72
1953.24    0.167   301.85
1954.24    0.162   300.92
1955.24    0.156   299.93
1956.24    0.151   298.87
1957.24    0.145   297.73
1958.24    0.139   296.49
1959.24    0.132   295.13
1960.24    0.126   293.62
1961.24    0.119   291.94
1962.24    0.111   290.05
1963.24    0.104   287.88
1964.24    0.096   285.37
1965.24    0.088   282.42
1966.24    0.080   278.88
1967.24    0.072   274.56
1968.24    0.065   269.21
1969.24    0.057   262.45
1970.24    0.051   253.85
1971.24    0.046   243.02
1972.24    0.042   229.90
1973.24    0.041   215.28
1974.24    0.042   200.74
1975.24    0.046   187.83
1976.24    0.051   177.22
1977.24    0.058   168.83
1978.24    0.065   162.23
1979.24    0.073   157.00
1980.24    0.081   152.78
1981.24    0.089   149.31
1982.24    0.097   146.42
1983.24    0.105   143.96
1984.24    0.112   141.84
1985.24    0.120   139.99
1986.24    0.127   138.35
1987.24    0.134   136.88
1988.24    0.141   135.55
1989.24    0.147   134.35
1990.24    0.153   133.24
1991.24    0.159   132.21
1992.24    0.165   131.26
1993.24    0.170   130.36
1994.24    0.175   129.52
1995.24    0.180   128.73
1996.24    0.184   127.97
1997.24    0.189   127.25
1998.24    0.193   126.56
1999.24    0.196   125.90
2000.24    0.200   125.26
2001.24    0.203   124.65
2002.24    0.207   124.05
2003.24    0.210   123.48
2004.24    0.212   122.91
2005.24    0.215   122.37
2006.24    0.217   121.83
2007.24    0.220   121.31
2008.24    0.222   120.79
2009.24    0.223   120.29
2010.24    0.225   119.79
2011.24    0.227   119.30
2012.24    0.228   118.82
2013.24    0.230   118.34
2014.24    0.231   117.87
2015.24    0.232   117.40
2016.24    0.233   116.94
2017.24    0.234   116.48
2018.24    0.234   116.02
2019.24    0.235   115.57
2020.24    0.235   115.11
2021.24    0.236   114.66
2022.24    0.236   114.21
2023.24    0.236   113.77
2024.24    0.236   113.32
2025.24    0.236   112.87
2026.24    0.236   112.42
2027.24    0.236   111.97
2028.24    0.236   111.52
2029.24    0.235   111.07
2030.24    0.235   110.62
2031.24    0.235   110.17
2032.24    0.234   109.71
2033.24    0.233   109.26
2034.24    0.233   108.80
2035.24    0.232   108.33
2036.24    0.231   107.87
2037.24    0.230   107.40
2038.24    0.229   106.92
2039.24    0.228   106.45
2040.24    0.227   105.97
2041.24    0.226   105.48
2042.24    0.225   104.99
2043.24    0.224   104.49
2044.24    0.223   103.99
2045.24    0.222   103.49
2046.24    0.220   102.97
2047.24    0.219   102.45
2048.24    0.218   101.93
2049.24    0.216   101.40
2050.24    0.215   100.86
2051.24    0.213   100.31
2052.24    0.212    99.76
2053.24    0.210    99.20
2054.24    0.209    98.63
2055.24    0.207    98.05
2056.24    0.205    97.46
2057.24    0.204    96.86
2058.24    0.202    96.25
2059.24    0.200    95.64
2060.24    0.199    95.01
2061.24    0.197    94.37
2062.24    0.195    93.72
2063.24    0.193    93.05
2064.24    0.192    92.38
2065.24    0.190    91.69
2066.24    0.188    90.99
2067.24    0.186    90.28
2068.24    0.185    89.55
2069.24    0.183    88.81
2070.24    0.181    88.05
2071.24    0.179    87.28
2072.24    0.177    86.49
2073.24    0.175    85.69
2074.24    0.174    84.87
2075.24    0.172    84.03
2076.24    0.170    83.18
2077.24    0.168    82.30
2078.24    0.167    81.41
2079.24    0.165    80.50
2080.24    0.163    79.57
2081.24    0.161    78.62
2082.24    0.160    77.64
2083.24    0.158    76.65
2084.24    0.156    75.64
2085.24    0.155    74.60
2086.24    0.153    73.54
2087.24    0.151    72.46
2088.24    0.150    71.36
2089.24    0.148    70.23
2090.24    0.147    69.08
2091.24    0.145    67.91
2092.24    0.144    66.71
2093.24    0.142    65.49
2094.24    0.141    64.24
2095.24    0.140    62.97
2096.24    0.139    61.68
2097.24    0.137    60.37
2098.24    0.136    59.03
2099.24    0.135    57.67
2100.24    0.134    56.29
2101.24    0.133    54.89
2102.24    0.132    53.47
2103.24    0.131    52.03
2104.24    0.131    50.57
2105.24    0.130    49.09
2106.24    0.129    47.60
2107.24    0.129    46.09
2108.24    0.128    44.57
2109.24    0.128    43.04
2110.24    0.127    41.50
2111.24    0.127    39.95
2112.24    0.127    38.39
2113.24    0.126    36.83
2114.24    0.126    35.26
2115.24    0.126    33.69
2116.24    0.126    32.13
2117.24    0.127    30.56
2118.24    0.127    29.00
2119.24    0.127    27.45
2120.24    0.127    25.90
2121.24    0.128    24.37
2122.24    0.128    22.84
2123.24    0.129    21.33
2124.24    0.129    19.83
2125.24    0.130    18.34
2126.24    0.131    16.88
2127.24    0.132    15.43
2128.24    0.133    14.00
2129.24    0.134    12.59
2130.24    0.135    11.20
2131.24    0.136     9.83
2132.24    0.137     8.48
2133.24    0.138     7.15
2134.24    0.139     5.85
2135.24    0.140     4.57
2136.24    0.142     3.32
2137.24    0.143     2.08
2138.24    0.144     0.87
2139.24    0.146   359.69
2140.24    0.147   358.52
2141.24    0.149   357.38
2142.24    0.150   356.27
2143.24    0.152   355.17
2144.24    0.154   354.10
2145.24    0.155   353.05
2146.24    0.157   352.02
2147.24    0.158   351.01
2148.24    0.160   350.03
2149.24    0.162   349.06
2150.24    0.163   348.12
2151.24    0.165   347.19
2152.24    0.167   346.28
2153.24    0.169   345.39
2154.24    0.170   344.52
2155.24    0.172   343.67
2156.24    0.174   342.83
2157.24    0.175   342.01
2158.24    0.177   341.20
2159.24    0.179   340.42






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 14:36:39



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