Double Star Calculator - Orbit

Orbital Elements for RST1205AB
WDS: RST1205AB WDS ID/Discoverer
P: 289.600 Orbital period (years)
a: 1.194 Semi-major axis (arcseconds)
i: 71.2 Inclination (degrees)
Ω: 24.9 Longitude of ascending node (degrees)
T: 1920.900 Epoch of periastron passage (year)
e: 0.597 Eccentricity
ω: 292.2 Longitude of periastron (degrees)
Start-Year: 1880.2 Year
End-Year: 2169.8 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for RST1205AB
Position: 010823.08-551444.7 Epoch-2000 right ascension and declination
WDS-ID: 01084-5515 WDS designation
Discoverer Code: RST1205AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 6882 HD catalog number
Hipparcos number: 5348 Hipparcos catalog number
V1: 4.02 Magnitude of the primary
V2: 6.80 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2017 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: Lin2019a Reference

Double Star Orbit for RST1205AB



WDS 6th Orbit including measures of RST1205AB

-- 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 RST1205AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.611   133.81
--------------------------
1880.20    1.112   201.63
1881.20    1.099   202.01
1882.20    1.086   202.39
1883.20    1.071   202.79
1884.20    1.057   203.19
1885.20    1.041   203.61
1886.20    1.025   204.04
1887.20    1.008   204.48
1888.20    0.991   204.94
1889.20    0.972   205.41
1890.20    0.953   205.91
1891.20    0.934   206.42
1892.20    0.913   206.96
1893.20    0.891   207.52
1894.20    0.869   208.12
1895.20    0.845   208.74
1896.20    0.821   209.40
1897.20    0.796   210.10
1898.20    0.769   210.85
1899.20    0.742   211.65
1900.20    0.714   212.52
1901.20    0.684   213.45
1902.20    0.653   214.48
1903.20    0.622   215.61
1904.20    0.589   216.86
1905.20    0.555   218.26
1906.20    0.519   219.85
1907.20    0.483   221.68
1908.20    0.446   223.80
1909.20    0.408   226.31
1910.20    0.370   229.35
1911.20    0.331   233.10
1912.20    0.292   237.83
1913.20    0.255   243.98
1914.20    0.221   252.13
1915.20    0.191   263.07
1916.20    0.169   277.40
1917.20    0.160   294.62
1918.20    0.164   312.37
1919.20    0.182   327.86
1920.20    0.209   339.97
1921.20    0.242   349.06
1922.20    0.277   355.89
1923.20    0.314     1.15
1924.20    0.351     5.31
1925.20    0.386     8.69
1926.20    0.421    11.50
1927.20    0.453    13.90
1928.20    0.484    15.99
1929.20    0.513    17.83
1930.20    0.540    19.49
1931.20    0.564    20.99
1932.20    0.587    22.37
1933.20    0.608    23.66
1934.20    0.626    24.86
1935.20    0.643    26.00
1936.20    0.659    27.08
1937.20    0.673    28.11
1938.20    0.685    29.11
1939.20    0.696    30.07
1940.20    0.705    31.00
1941.20    0.714    31.91
1942.20    0.721    32.80
1943.20    0.727    33.68
1944.20    0.732    34.54
1945.20    0.736    35.39
1946.20    0.740    36.23
1947.20    0.742    37.06
1948.20    0.744    37.89
1949.20    0.745    38.72
1950.20    0.746    39.54
1951.20    0.746    40.36
1952.20    0.745    41.19
1953.20    0.744    42.01
1954.20    0.743    42.84
1955.20    0.741    43.68
1956.20    0.738    44.51
1957.20    0.735    45.36
1958.20    0.732    46.21
1959.20    0.729    47.07
1960.20    0.725    47.94
1961.20    0.721    48.81
1962.20    0.717    49.70
1963.20    0.712    50.60
1964.20    0.708    51.51
1965.20    0.703    52.43
1966.20    0.698    53.36
1967.20    0.693    54.31
1968.20    0.687    55.27
1969.20    0.682    56.25
1970.20    0.677    57.24
1971.20    0.671    58.25
1972.20    0.666    59.28
1973.20    0.660    60.32
1974.20    0.654    61.38
1975.20    0.649    62.46
1976.20    0.643    63.56
1977.20    0.638    64.67
1978.20    0.632    65.81
1979.20    0.627    66.96
1980.20    0.622    68.14
1981.20    0.616    69.34
1982.20    0.611    70.55
1983.20    0.606    71.79
1984.20    0.601    73.05
1985.20    0.596    74.33
1986.20    0.591    75.63
1987.20    0.587    76.95
1988.20    0.583    78.29
1989.20    0.578    79.65
1990.20    0.574    81.03
1991.20    0.571    82.42
1992.20    0.567    83.84
1993.20    0.564    85.27
1994.20    0.561    86.72
1995.20    0.558    88.18
1996.20    0.555    89.66
1997.20    0.553    91.16
1998.20    0.551    92.66
1999.20    0.549    94.17
2000.20    0.548    95.70
2001.20    0.546    97.23
2002.20    0.545    98.77
2003.20    0.545   100.31
2004.20    0.544   101.85
2005.20    0.544   103.40
2006.20    0.545   104.94
2007.20    0.545   106.49
2008.20    0.546   108.03
2009.20    0.547   109.56
2010.20    0.549   111.09
2011.20    0.550   112.60
2012.20    0.552   114.11
2013.20    0.555   115.60
2014.20    0.557   117.09
2015.20    0.560   118.55
2016.20    0.564   120.00
2017.20    0.567   121.44
2018.20    0.571   122.85
2019.20    0.575   124.25
2020.20    0.579   125.63
2021.20    0.583   126.98
2022.20    0.588   128.32
2023.20    0.593   129.63
2024.20    0.598   130.92
2025.20    0.604   132.19
2026.20    0.609   133.44
2027.20    0.615   134.66
2028.20    0.621   135.86
2029.20    0.627   137.04
2030.20    0.634   138.19
2031.20    0.640   139.32
2032.20    0.647   140.43
2033.20    0.654   141.51
2034.20    0.661   142.57
2035.20    0.668   143.61
2036.20    0.675   144.63
2037.20    0.682   145.62
2038.20    0.690   146.60
2039.20    0.697   147.55
2040.20    0.705   148.48
2041.20    0.713   149.39
2042.20    0.721   150.28
2043.20    0.729   151.16
2044.20    0.737   152.01
2045.20    0.745   152.84
2046.20    0.753   153.66
2047.20    0.761   154.46
2048.20    0.769   155.24
2049.20    0.778   156.01
2050.20    0.786   156.76
2051.20    0.795   157.49
2052.20    0.803   158.21
2053.20    0.811   158.91
2054.20    0.820   159.60
2055.20    0.828   160.28
2056.20    0.837   160.94
2057.20    0.846   161.59
2058.20    0.854   162.22
2059.20    0.863   162.84
2060.20    0.871   163.45
2061.20    0.880   164.05
2062.20    0.888   164.64
2063.20    0.897   165.21
2064.20    0.905   165.78
2065.20    0.914   166.33
2066.20    0.922   166.87
2067.20    0.931   167.41
2068.20    0.939   167.93
2069.20    0.948   168.45
2070.20    0.956   168.95
2071.20    0.964   169.45
2072.20    0.972   169.94
2073.20    0.981   170.42
2074.20    0.989   170.89
2075.20    0.997   171.35
2076.20    1.005   171.81
2077.20    1.013   172.26
2078.20    1.021   172.70
2079.20    1.029   173.14
2080.20    1.037   173.57
2081.20    1.045   173.99
2082.20    1.052   174.41
2083.20    1.060   174.82
2084.20    1.068   175.23
2085.20    1.075   175.62
2086.20    1.083   176.02
2087.20    1.090   176.41
2088.20    1.097   176.79
2089.20    1.104   177.17
2090.20    1.111   177.54
2091.20    1.118   177.91
2092.20    1.125   178.27
2093.20    1.132   178.63
2094.20    1.139   178.99
2095.20    1.145   179.34
2096.20    1.152   179.69
2097.20    1.158   180.03
2098.20    1.165   180.37
2099.20    1.171   180.71
2100.20    1.177   181.04
2101.20    1.183   181.37
2102.20    1.189   181.69
2103.20    1.194   182.02
2104.20    1.200   182.34
2105.20    1.205   182.65
2106.20    1.211   182.97
2107.20    1.216   183.28
2108.20    1.221   183.59
2109.20    1.226   183.89
2110.20    1.231   184.20
2111.20    1.236   184.50
2112.20    1.240   184.80
2113.20    1.244   185.09
2114.20    1.249   185.39
2115.20    1.253   185.68
2116.20    1.257   185.97
2117.20    1.260   186.26
2118.20    1.264   186.55
2119.20    1.267   186.84
2120.20    1.271   187.12
2121.20    1.274   187.40
2122.20    1.277   187.68
2123.20    1.279   187.97
2124.20    1.282   188.24
2125.20    1.284   188.52
2126.20    1.286   188.80
2127.20    1.288   189.08
2128.20    1.290   189.35
2129.20    1.292   189.63
2130.20    1.293   189.90
2131.20    1.294   190.18
2132.20    1.295   190.45
2133.20    1.296   190.72
2134.20    1.296   191.00
2135.20    1.296   191.27
2136.20    1.296   191.54
2137.20    1.296   191.81
2138.20    1.296   192.09
2139.20    1.295   192.36
2140.20    1.294   192.63
2141.20    1.293   192.91
2142.20    1.291   193.18
2143.20    1.289   193.46
2144.20    1.287   193.73
2145.20    1.285   194.01
2146.20    1.282   194.29
2147.20    1.279   194.57
2148.20    1.276   194.85
2149.20    1.272   195.13
2150.20    1.268   195.41
2151.20    1.264   195.70
2152.20    1.260   195.99
2153.20    1.255   196.28
2154.20    1.249   196.57
2155.20    1.244   196.86
2156.20    1.238   197.16
2157.20    1.231   197.46
2158.20    1.224   197.77
2159.20    1.217   198.07
2160.20    1.209   198.39
2161.20    1.201   198.70
2162.20    1.193   199.02
2163.20    1.184   199.35
2164.20    1.174   199.67
2165.20    1.164   200.01
2166.20    1.154   200.35
2167.20    1.143   200.70
2168.20    1.132   201.05
2169.20    1.120   201.41






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 14:47:46



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