Double Star Calculator - Orbit

Orbital Elements for RST3105
WDS: RST3105 WDS ID/Discoverer
P: 247.872 Orbital period (years)
a: 0.842 Semi-major axis (arcseconds)
i: 132.8 Inclination (degrees)
Ω: 162.7 Longitude of ascending node (degrees)
T: 2024.331 Epoch of periastron passage (year)
e: 0.616 Eccentricity
ω: 296.6 Longitude of periastron (degrees)
Start-Year: 1901.064 Year
End-Year: 2148.936 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for RST3105
Position: 172900.20-242011.1 Epoch-2000 right ascension and declination
WDS-ID: 17290-2420 WDS designation
Discoverer Code: RST3105 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 158213 HD catalog number
Hipparcos number: 85548 Hipparcos catalog number
V1: 8.55 Magnitude of the primary
V2: 12.61 Magnitude of the secondary
Equinox: 2000 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: n Flags
Ephemerides: Ephemerides
Code: Tok2018e Reference

Double Star Orbit for RST3105



WDS 6th Orbit including measures of RST3105

-- 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 RST3105
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.278   198.54
--------------------------
1901.06    1.029    35.96
1902.06    1.032    35.44
1903.06    1.035    34.92
1904.06    1.037    34.41
1905.06    1.040    33.90
1906.06    1.043    33.39
1907.06    1.045    32.89
1908.06    1.048    32.38
1909.06    1.050    31.88
1910.06    1.052    31.38
1911.06    1.054    30.89
1912.06    1.056    30.39
1913.06    1.058    29.90
1914.06    1.060    29.41
1915.06    1.062    28.92
1916.06    1.064    28.43
1917.06    1.066    27.94
1918.06    1.067    27.46
1919.06    1.069    26.98
1920.06    1.070    26.49
1921.06    1.071    26.01
1922.06    1.073    25.53
1923.06    1.074    25.06
1924.06    1.075    24.58
1925.06    1.075    24.10
1926.06    1.076    23.62
1927.06    1.077    23.15
1928.06    1.077    22.67
1929.06    1.078    22.20
1930.06    1.078    21.73
1931.06    1.079    21.25
1932.06    1.079    20.78
1933.06    1.079    20.30
1934.06    1.079    19.83
1935.06    1.078    19.36
1936.06    1.078    18.88
1937.06    1.077    18.41
1938.06    1.077    17.93
1939.06    1.076    17.46
1940.06    1.075    16.98
1941.06    1.074    16.50
1942.06    1.073    16.03
1943.06    1.072    15.55
1944.06    1.070    15.07
1945.06    1.069    14.59
1946.06    1.067    14.10
1947.06    1.065    13.62
1948.06    1.063    13.13
1949.06    1.061    12.64
1950.06    1.059    12.15
1951.06    1.056    11.66
1952.06    1.054    11.16
1953.06    1.051    10.67
1954.06    1.048    10.17
1955.06    1.045     9.66
1956.06    1.042     9.16
1957.06    1.038     8.65
1958.06    1.035     8.13
1959.06    1.031     7.62
1960.06    1.027     7.10
1961.06    1.022     6.57
1962.06    1.018     6.04
1963.06    1.013     5.51
1964.06    1.009     4.97
1965.06    1.004     4.42
1966.06    0.998     3.87
1967.06    0.993     3.32
1968.06    0.987     2.76
1969.06    0.981     2.19
1970.06    0.975     1.61
1971.06    0.969     1.03
1972.06    0.962     0.44
1973.06    0.955   359.84
1974.06    0.948   359.23
1975.06    0.941   358.61
1976.06    0.933   357.98
1977.06    0.925   357.34
1978.06    0.917   356.69
1979.06    0.908   356.03
1980.06    0.900   355.36
1981.06    0.890   354.67
1982.06    0.881   353.97
1983.06    0.871   353.25
1984.06    0.861   352.51
1985.06    0.851   351.76
1986.06    0.840   350.99
1987.06    0.829   350.20
1988.06    0.817   349.38
1989.06    0.805   348.55
1990.06    0.793   347.68
1991.06    0.780   346.79
1992.06    0.767   345.87
1993.06    0.753   344.92
1994.06    0.739   343.92
1995.06    0.724   342.89
1996.06    0.709   341.82
1997.06    0.694   340.70
1998.06    0.677   339.53
1999.06    0.661   338.30
2000.06    0.644   337.00
2001.06    0.626   335.64
2002.06    0.608   334.19
2003.06    0.589   332.65
2004.06    0.569   331.00
2005.06    0.549   329.24
2006.06    0.528   327.34
2007.06    0.507   325.28
2008.06    0.485   323.04
2009.06    0.463   320.59
2010.06    0.440   317.88
2011.06    0.417   314.87
2012.06    0.393   311.51
2013.06    0.369   307.71
2014.06    0.346   303.39
2015.06    0.322   298.44
2016.06    0.300   292.75
2017.06    0.279   286.17
2018.06    0.261   278.60
2019.06    0.245   269.97
2020.06    0.234   260.35
2021.06    0.228   249.98
2022.06    0.227   239.27
2023.06    0.231   228.73
2024.06    0.241   218.81
2025.06    0.254   209.79
2026.06    0.270   201.74
2027.06    0.288   194.65
2028.06    0.307   188.41
2029.06    0.325   182.88
2030.06    0.344   177.96
2031.06    0.362   173.53
2032.06    0.379   169.52
2033.06    0.395   165.84
2034.06    0.411   162.45
2035.06    0.425   159.29
2036.06    0.439   156.34
2037.06    0.451   153.55
2038.06    0.463   150.92
2039.06    0.474   148.41
2040.06    0.485   146.01
2041.06    0.494   143.71
2042.06    0.504   141.49
2043.06    0.512   139.36
2044.06    0.521   137.29
2045.06    0.529   135.29
2046.06    0.536   133.35
2047.06    0.543   131.46
2048.06    0.550   129.61
2049.06    0.557   127.82
2050.06    0.564   126.06
2051.06    0.570   124.34
2052.06    0.576   122.66
2053.06    0.582   121.02
2054.06    0.588   119.41
2055.06    0.593   117.83
2056.06    0.599   116.28
2057.06    0.604   114.75
2058.06    0.610   113.26
2059.06    0.615   111.79
2060.06    0.620   110.34
2061.06    0.626   108.92
2062.06    0.631   107.53
2063.06    0.636   106.15
2064.06    0.641   104.80
2065.06    0.646   103.47
2066.06    0.651   102.16
2067.06    0.656   100.87
2068.06    0.661    99.60
2069.06    0.666    98.35
2070.06    0.671    97.12
2071.06    0.676    95.90
2072.06    0.681    94.71
2073.06    0.686    93.53
2074.06    0.691    92.37
2075.06    0.696    91.22
2076.06    0.702    90.09
2077.06    0.707    88.98
2078.06    0.712    87.89
2079.06    0.717    86.81
2080.06    0.722    85.74
2081.06    0.727    84.69
2082.06    0.732    83.65
2083.06    0.737    82.63
2084.06    0.742    81.62
2085.06    0.747    80.63
2086.06    0.752    79.65
2087.06    0.757    78.68
2088.06    0.762    77.73
2089.06    0.767    76.79
2090.06    0.773    75.86
2091.06    0.778    74.94
2092.06    0.783    74.03
2093.06    0.788    73.14
2094.06    0.793    72.26
2095.06    0.798    71.39
2096.06    0.803    70.53
2097.06    0.808    69.68
2098.06    0.813    68.84
2099.06    0.818    68.01
2100.06    0.823    67.19
2101.06    0.828    66.38
2102.06    0.833    65.58
2103.06    0.838    64.79
2104.06    0.843    64.01
2105.06    0.848    63.24
2106.06    0.853    62.48
2107.06    0.858    61.73
2108.06    0.863    60.98
2109.06    0.868    60.25
2110.06    0.872    59.52
2111.06    0.877    58.80
2112.06    0.882    58.09
2113.06    0.887    57.38
2114.06    0.892    56.69
2115.06    0.896    56.00
2116.06    0.901    55.31
2117.06    0.906    54.64
2118.06    0.910    53.97
2119.06    0.915    53.31
2120.06    0.919    52.65
2121.06    0.924    52.00
2122.06    0.928    51.36
2123.06    0.933    50.72
2124.06    0.937    50.09
2125.06    0.941    49.47
2126.06    0.946    48.85
2127.06    0.950    48.24
2128.06    0.954    47.63
2129.06    0.958    47.03
2130.06    0.962    46.43
2131.06    0.966    45.83
2132.06    0.970    45.25
2133.06    0.974    44.66
2134.06    0.978    44.09
2135.06    0.982    43.51
2136.06    0.986    42.94
2137.06    0.989    42.38
2138.06    0.993    41.82
2139.06    0.997    41.26
2140.06    1.000    40.71
2141.06    1.004    40.16
2142.06    1.007    39.61
2143.06    1.011    39.07
2144.06    1.014    38.53
2145.06    1.017    38.00
2146.06    1.020    37.47
2147.06    1.023    36.94
2148.06    1.026    36.42






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 17:39:01



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