Double Star Calculator - Orbit

Orbital Elements for STF2924AB

WDS:	STF2924AB	WDS ID/Discoverer
P:	218.800	Orbital period (years)
a:	0.759	Semi-major axis (arcseconds)
i:	77.66	Inclination (degrees)
Ω:	81.17	Longitude of ascending node (degrees)
T:	1971.585	Epoch of periastron passage (year)
e:	0.272	Eccentricity
ω:	2.52	Longitude of periastron (degrees)
Start-Year:	1915.6	Year
End-Year:	2134.4	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2924AB
Position:	223302.70+695448.1	Epoch-2000 right ascension and declination
WDS-ID:	22330+6955	WDS designation
Discoverer Code:	STF2924AB	Discover designation and components
ADS number:	16057	Aitken Double Star catalog
HD number:	213973	HD catalog number
Hipparcos number:	111314	Hipparcos catalog number
V1:	7.82	Magnitude of the primary
V2:	6.28	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Pru2010	Reference

Double Star Orbit for STF2924AB

WDS 6th Orbit including measures of STF2924AB

-- 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 STF2924AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.462   242.69
--------------------------
1915.60    0.426   282.24
1916.60    0.408   283.36
1917.60    0.390   284.59
1918.60    0.372   285.93
1919.60    0.354   287.41
1920.60    0.336   289.06
1921.60    0.318   290.88
1922.60    0.300   292.93
1923.60    0.282   295.24
1924.60    0.265   297.85
1925.60    0.248   300.83
1926.60    0.231   304.24
1927.60    0.215   308.16
1928.60    0.201   312.67
1929.60    0.187   317.86
1930.60    0.175   323.80
1931.60    0.166   330.53
1932.60    0.158   337.99
1933.60    0.153   346.06
1934.60    0.152   354.46
1935.60    0.153     2.87
1936.60    0.158    10.96
1937.60    0.165    18.46
1938.60    0.175    25.24
1939.60    0.186    31.23
1940.60    0.200    36.48
1941.60    0.214    41.04
1942.60    0.229    45.01
1943.60    0.246    48.47
1944.60    0.262    51.50
1945.60    0.279    54.17
1946.60    0.296    56.53
1947.60    0.313    58.64
1948.60    0.330    60.53
1949.60    0.347    62.23
1950.60    0.363    63.78
1951.60    0.379    65.20
1952.60    0.395    66.50
1953.60    0.411    67.70
1954.60    0.425    68.81
1955.60    0.440    69.86
1956.60    0.453    70.83
1957.60    0.466    71.76
1958.60    0.478    72.63
1959.60    0.490    73.46
1960.60    0.500    74.26
1961.60    0.510    75.02
1962.60    0.519    75.76
1963.60    0.527    76.47
1964.60    0.534    77.16
1965.60    0.540    77.84
1966.60    0.544    78.50
1967.60    0.548    79.15
1968.60    0.551    79.80
1969.60    0.552    80.44
1970.60    0.553    81.08
1971.60    0.552    81.72
1972.60    0.550    82.36
1973.60    0.547    83.01
1974.60    0.543    83.66
1975.60    0.538    84.33
1976.60    0.532    85.01
1977.60    0.525    85.71
1978.60    0.517    86.42
1979.60    0.508    87.17
1980.60    0.498    87.94
1981.60    0.487    88.74
1982.60    0.475    89.59
1983.60    0.462    90.47
1984.60    0.449    91.41
1985.60    0.435    92.41
1986.60    0.420    93.48
1987.60    0.405    94.63
1988.60    0.389    95.87
1989.60    0.372    97.21
1990.60    0.356    98.68
1991.60    0.338   100.30
1992.60    0.321   102.10
1993.60    0.304   104.10
1994.60    0.286   106.34
1995.60    0.269   108.87
1996.60    0.252   111.76
1997.60    0.235   115.06
1998.60    0.218   118.86
1999.60    0.203   123.26
2000.60    0.189   128.36
2001.60    0.176   134.24
2002.60    0.165   140.98
2003.60    0.156   148.55
2004.60    0.151   156.84
2005.60    0.148   165.59
2006.60    0.149   174.44
2007.60    0.153   182.99
2008.60    0.161   190.93
2009.60    0.170   198.08
2010.60    0.182   204.36
2011.60    0.196   209.81
2012.60    0.211   214.51
2013.60    0.227   218.57
2014.60    0.244   222.08
2015.60    0.262   225.12
2016.60    0.280   227.78
2017.60    0.298   230.12
2018.60    0.317   232.18
2019.60    0.335   234.02
2020.60    0.354   235.66
2021.60    0.372   237.14
2022.60    0.391   238.48
2023.60    0.409   239.70
2024.60    0.428   240.81
2025.60    0.446   241.83
2026.60    0.464   242.78
2027.60    0.482   243.65
2028.60    0.499   244.46
2029.60    0.517   245.21
2030.60    0.534   245.92
2031.60    0.551   246.58
2032.60    0.567   247.21
2033.60    0.584   247.80
2034.60    0.600   248.35
2035.60    0.616   248.88
2036.60    0.631   249.38
2037.60    0.646   249.86
2038.60    0.661   250.32
2039.60    0.676   250.75
2040.60    0.690   251.17
2041.60    0.704   251.57
2042.60    0.717   251.96
2043.60    0.730   252.33
2044.60    0.743   252.69
2045.60    0.756   253.04
2046.60    0.768   253.37
2047.60    0.780   253.70
2048.60    0.791   254.01
2049.60    0.802   254.32
2050.60    0.813   254.62
2051.60    0.824   254.91
2052.60    0.834   255.19
2053.60    0.843   255.47
2054.60    0.853   255.74
2055.60    0.862   256.01
2056.60    0.870   256.27
2057.60    0.878   256.52
2058.60    0.886   256.77
2059.60    0.894   257.02
2060.60    0.901   257.26
2061.60    0.908   257.50
2062.60    0.914   257.73
2063.60    0.920   257.97
2064.60    0.926   258.19
2065.60    0.931   258.42
2066.60    0.936   258.64
2067.60    0.940   258.87
2068.60    0.944   259.09
2069.60    0.948   259.30
2070.60    0.952   259.52
2071.60    0.955   259.73
2072.60    0.957   259.95
2073.60    0.959   260.16
2074.60    0.961   260.37
2075.60    0.963   260.58
2076.60    0.964   260.79
2077.60    0.965   261.00
2078.60    0.965   261.21
2079.60    0.965   261.42
2080.60    0.965   261.63
2081.60    0.964   261.84
2082.60    0.963   262.05
2083.60    0.961   262.26
2084.60    0.960   262.47
2085.60    0.957   262.68
2086.60    0.955   262.89
2087.60    0.952   263.11
2088.60    0.948   263.33
2089.60    0.945   263.54
2090.60    0.941   263.76
2091.60    0.936   263.98
2092.60    0.931   264.21
2093.60    0.926   264.43
2094.60    0.921   264.66
2095.60    0.915   264.89
2096.60    0.909   265.13
2097.60    0.902   265.37
2098.60    0.895   265.61
2099.60    0.887   265.85
2100.60    0.880   266.10
2101.60    0.872   266.36
2102.60    0.863   266.62
2103.60    0.854   266.88
2104.60    0.845   267.15
2105.60    0.836   267.43
2106.60    0.826   267.71
2107.60    0.816   268.00
2108.60    0.805   268.29
2109.60    0.794   268.60
2110.60    0.783   268.91
2111.60    0.771   269.23
2112.60    0.760   269.57
2113.60    0.747   269.91
2114.60    0.735   270.27
2115.60    0.722   270.63
2116.60    0.709   271.01
2117.60    0.695   271.41
2118.60    0.681   271.82
2119.60    0.667   272.25
2120.60    0.653   272.70
2121.60    0.638   273.17
2122.60    0.623   273.66
2123.60    0.607   274.17
2124.60    0.592   274.71
2125.60    0.576   275.29
2126.60    0.560   275.89
2127.60    0.543   276.53
2128.60    0.527   277.21
2129.60    0.510   277.94
2130.60    0.493   278.72
2131.60    0.475   279.55
2132.60    0.458   280.44
2133.60    0.440   281.41

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 18:41:29