Double Star Calculator - Orbit

Orbital Elements for STF1879AB
WDS: STF1879AB WDS ID/Discoverer
P: 253.000 Orbital period (years)
a: 1.111 Semi-major axis (arcseconds)
i: 117.8 Inclination (degrees)
Ω: 251.24 Longitude of ascending node (degrees)
T: 1866.000 Epoch of periastron passage (year)
e: 0.6989 Eccentricity
ω: 327.8 Longitude of periastron (degrees)
Start-Year: 1898.5 Year
End-Year: 2151.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1879AB
Position: 144615.58+093848.2 Epoch-2000 right ascension and declination
WDS-ID: 14463+0939 WDS designation
Discoverer Code: STF1879AB Discover designation and components
ADS number: 9380 Aitken Double Star catalog
HD number: 130145 HD catalog number
Hipparcos number: 72221 Hipparcos catalog number
V1: 7.79 Magnitude of the primary
V2: 8.45 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Msn1999a Reference

Double Star Orbit for STF1879AB



WDS 6th Orbit including measures of STF1879AB

-- 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 STF1879AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.708    80.76
--------------------------
1898.50    0.517   141.78
1899.50    0.532   139.65
1900.50    0.548   137.65
1901.50    0.564   135.75
1902.50    0.580   133.96
1903.50    0.597   132.27
1904.50    0.613   130.67
1905.50    0.630   129.15
1906.50    0.647   127.72
1907.50    0.664   126.35
1908.50    0.681   125.06
1909.50    0.698   123.82
1910.50    0.715   122.65
1911.50    0.732   121.53
1912.50    0.749   120.46
1913.50    0.766   119.44
1914.50    0.783   118.46
1915.50    0.799   117.52
1916.50    0.816   116.62
1917.50    0.833   115.76
1918.50    0.850   114.93
1919.50    0.866   114.14
1920.50    0.882   113.37
1921.50    0.899   112.63
1922.50    0.915   111.92
1923.50    0.931   111.23
1924.50    0.947   110.57
1925.50    0.963   109.93
1926.50    0.979   109.30
1927.50    0.994   108.70
1928.50    1.010   108.12
1929.50    1.025   107.55
1930.50    1.040   107.00
1931.50    1.055   106.47
1932.50    1.070   105.95
1933.50    1.085   105.45
1934.50    1.100   104.96
1935.50    1.114   104.48
1936.50    1.128   104.01
1937.50    1.143   103.56
1938.50    1.157   103.11
1939.50    1.170   102.68
1940.50    1.184   102.26
1941.50    1.198   101.84
1942.50    1.211   101.44
1943.50    1.224   101.05
1944.50    1.237   100.66
1945.50    1.250   100.28
1946.50    1.263    99.91
1947.50    1.275    99.55
1948.50    1.288    99.19
1949.50    1.300    98.84
1950.50    1.312    98.50
1951.50    1.324    98.16
1952.50    1.336    97.83
1953.50    1.347    97.50
1954.50    1.359    97.18
1955.50    1.370    96.87
1956.50    1.381    96.56
1957.50    1.392    96.25
1958.50    1.403    95.95
1959.50    1.413    95.66
1960.50    1.424    95.37
1961.50    1.434    95.08
1962.50    1.444    94.80
1963.50    1.454    94.52
1964.50    1.464    94.24
1965.50    1.473    93.97
1966.50    1.483    93.70
1967.50    1.492    93.44
1968.50    1.501    93.17
1969.50    1.510    92.92
1970.50    1.518    92.66
1971.50    1.527    92.41
1972.50    1.535    92.16
1973.50    1.543    91.91
1974.50    1.551    91.67
1975.50    1.559    91.42
1976.50    1.567    91.18
1977.50    1.574    90.95
1978.50    1.582    90.71
1979.50    1.589    90.48
1980.50    1.596    90.25
1981.50    1.602    90.02
1982.50    1.609    89.79
1983.50    1.615    89.57
1984.50    1.622    89.34
1985.50    1.628    89.12
1986.50    1.633    88.90
1987.50    1.639    88.68
1988.50    1.645    88.46
1989.50    1.650    88.25
1990.50    1.655    88.03
1991.50    1.660    87.82
1992.50    1.665    87.61
1993.50    1.669    87.40
1994.50    1.674    87.19
1995.50    1.678    86.98
1996.50    1.682    86.77
1997.50    1.686    86.56
1998.50    1.689    86.36
1999.50    1.693    86.15
2000.50    1.696    85.95
2001.50    1.699    85.75
2002.50    1.702    85.54
2003.50    1.704    85.34
2004.50    1.707    85.14
2005.50    1.709    84.94
2006.50    1.711    84.74
2007.50    1.713    84.54
2008.50    1.714    84.34
2009.50    1.716    84.14
2010.50    1.717    83.94
2011.50    1.718    83.74
2012.50    1.719    83.54
2013.50    1.720    83.35
2014.50    1.720    83.15
2015.50    1.720    82.95
2016.50    1.720    82.75
2017.50    1.720    82.55
2018.50    1.720    82.36
2019.50    1.719    82.16
2020.50    1.718    81.96
2021.50    1.717    81.76
2022.50    1.716    81.56
2023.50    1.714    81.36
2024.50    1.712    81.16
2025.50    1.710    80.96
2026.50    1.708    80.76
2027.50    1.706    80.56
2028.50    1.703    80.36
2029.50    1.700    80.16
2030.50    1.697    79.95
2031.50    1.694    79.75
2032.50    1.690    79.55
2033.50    1.686    79.34
2034.50    1.682    79.13
2035.50    1.678    78.93
2036.50    1.673    78.72
2037.50    1.668    78.51
2038.50    1.663    78.30
2039.50    1.657    78.08
2040.50    1.652    77.87
2041.50    1.646    77.65
2042.50    1.640    77.44
2043.50    1.633    77.22
2044.50    1.627    77.00
2045.50    1.619    76.78
2046.50    1.612    76.55
2047.50    1.605    76.32
2048.50    1.597    76.10
2049.50    1.589    75.86
2050.50    1.580    75.63
2051.50    1.571    75.40
2052.50    1.562    75.16
2053.50    1.553    74.92
2054.50    1.543    74.67
2055.50    1.533    74.42
2056.50    1.523    74.17
2057.50    1.512    73.92
2058.50    1.501    73.66
2059.50    1.490    73.40
2060.50    1.478    73.13
2061.50    1.466    72.86
2062.50    1.454    72.59
2063.50    1.441    72.31
2064.50    1.428    72.02
2065.50    1.414    71.73
2066.50    1.400    71.44
2067.50    1.386    71.13
2068.50    1.371    70.83
2069.50    1.356    70.51
2070.50    1.340    70.19
2071.50    1.325    69.86
2072.50    1.308    69.52
2073.50    1.291    69.17
2074.50    1.274    68.82
2075.50    1.256    68.45
2076.50    1.238    68.07
2077.50    1.219    67.69
2078.50    1.200    67.29
2079.50    1.180    66.87
2080.50    1.160    66.44
2081.50    1.139    66.00
2082.50    1.118    65.54
2083.50    1.096    65.06
2084.50    1.073    64.56
2085.50    1.050    64.05
2086.50    1.027    63.50
2087.50    1.002    62.93
2088.50    0.977    62.33
2089.50    0.952    61.70
2090.50    0.925    61.04
2091.50    0.898    60.33
2092.50    0.870    59.58
2093.50    0.842    58.79
2094.50    0.812    57.93
2095.50    0.782    57.01
2096.50    0.751    56.01
2097.50    0.720    54.93
2098.50    0.687    53.74
2099.50    0.654    52.44
2100.50    0.619    50.99
2101.50    0.584    49.37
2102.50    0.548    47.54
2103.50    0.511    45.45
2104.50    0.474    43.04
2105.50    0.436    40.20
2106.50    0.398    36.82
2107.50    0.359    32.72
2108.50    0.321    27.64
2109.50    0.285    21.23
2110.50    0.251    13.01
2111.50    0.222     2.44
2112.50    0.200   349.15
2113.50    0.189   333.55
2114.50    0.191   317.21
2115.50    0.205   302.14
2116.50    0.227   289.50
2117.50    0.254   279.32
2118.50    0.282   271.13
2119.50    0.308   264.38
2120.50    0.331   258.64
2121.50    0.349   253.58
2122.50    0.364   248.98
2123.50    0.374   244.68
2124.50    0.381   240.57
2125.50    0.384   236.57
2126.50    0.385   232.62
2127.50    0.385   228.67
2128.50    0.383   224.70
2129.50    0.381   220.68
2130.50    0.378   216.62
2131.50    0.375   212.49
2132.50    0.373   208.31
2133.50    0.372   204.08
2134.50    0.371   199.83
2135.50    0.371   195.56
2136.50    0.372   191.31
2137.50    0.375   187.11
2138.50    0.378   182.97
2139.50    0.383   178.92
2140.50    0.389   174.99
2141.50    0.396   171.18
2142.50    0.404   167.52
2143.50    0.414   164.02
2144.50    0.424   160.68
2145.50    0.435   157.51
2146.50    0.447   154.50
2147.50    0.460   151.66
2148.50    0.474   148.97
2149.50    0.488   146.43
2150.50    0.502   144.04






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 17:08:34



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