Double Star Calculator - Orbit

Orbital Elements for STF2944AB
WDS: STF2944AB WDS ID/Discoverer
P: 602.883 Orbital period (years)
a: 3.18601 Semi-major axis (arcseconds)
i: 56.203 Inclination (degrees)
Ω: 31.116 Longitude of ascending node (degrees)
T: 2111.415 Epoch of periastron passage (year)
e: 0.66386 Eccentricity
ω: 46.974 Longitude of periastron (degrees)
Start-Year: 1723.5583 Year
End-Year: 2326.4417 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2944AB
Position: 224750.05-041343.6 Epoch-2000 right ascension and declination
WDS-ID: 22478-0414 WDS designation
Discoverer Code: STF2944AB Discover designation and components
ADS number: 16270 Aitken Double Star catalog
HD number: 215812 HD catalog number
Hipparcos number: 112559 Hipparcos catalog number
V1: 7.30 Magnitude of the primary
V2: 7.68 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STF2944AB



WDS 6th Orbit including measures of STF2944AB

-- 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 STF2944AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.770   312.40
--------------------------
1723.56    4.463   230.60
1724.56    4.464   230.72
1725.56    4.465   230.85
1726.56    4.466   230.98
1727.56    4.467   231.10
1728.56    4.467   231.23
1729.56    4.468   231.36
1730.56    4.468   231.48
1731.56    4.469   231.61
1732.56    4.469   231.74
1733.56    4.469   231.86
1734.56    4.469   231.99
1735.56    4.469   232.11
1736.56    4.469   232.24
1737.56    4.468   232.37
1738.56    4.468   232.49
1739.56    4.467   232.62
1740.56    4.467   232.75
1741.56    4.466   232.87
1742.56    4.465   233.00
1743.56    4.464   233.13
1744.56    4.463   233.25
1745.56    4.462   233.38
1746.56    4.461   233.50
1747.56    4.460   233.63
1748.56    4.459   233.76
1749.56    4.457   233.89
1750.56    4.456   234.01
1751.56    4.454   234.14
1752.56    4.452   234.27
1753.56    4.450   234.39
1754.56    4.449   234.52
1755.56    4.447   234.65
1756.56    4.444   234.78
1757.56    4.442   234.90
1758.56    4.440   235.03
1759.56    4.438   235.16
1760.56    4.435   235.29
1761.56    4.433   235.42
1762.56    4.430   235.54
1763.56    4.427   235.67
1764.56    4.425   235.80
1765.56    4.422   235.93
1766.56    4.419   236.06
1767.56    4.416   236.19
1768.56    4.412   236.32
1769.56    4.409   236.45
1770.56    4.406   236.58
1771.56    4.403   236.71
1772.56    4.399   236.84
1773.56    4.396   236.97
1774.56    4.392   237.10
1775.56    4.388   237.23
1776.56    4.384   237.36
1777.56    4.380   237.49
1778.56    4.376   237.62
1779.56    4.372   237.76
1780.56    4.368   237.89
1781.56    4.364   238.02
1782.56    4.360   238.15
1783.56    4.355   238.29
1784.56    4.351   238.42
1785.56    4.346   238.55
1786.56    4.342   238.69
1787.56    4.337   238.82
1788.56    4.332   238.95
1789.56    4.327   239.09
1790.56    4.322   239.22
1791.56    4.317   239.36
1792.56    4.312   239.49
1793.56    4.307   239.63
1794.56    4.302   239.77
1795.56    4.296   239.90
1796.56    4.291   240.04
1797.56    4.285   240.18
1798.56    4.280   240.31
1799.56    4.274   240.45
1800.56    4.268   240.59
1801.56    4.263   240.73
1802.56    4.257   240.87
1803.56    4.251   241.01
1804.56    4.245   241.15
1805.56    4.239   241.29
1806.56    4.232   241.43
1807.56    4.226   241.57
1808.56    4.220   241.71
1809.56    4.213   241.85
1810.56    4.207   241.99
1811.56    4.200   242.14
1812.56    4.194   242.28
1813.56    4.187   242.42
1814.56    4.180   242.57
1815.56    4.173   242.71
1816.56    4.167   242.86
1817.56    4.160   243.00
1818.56    4.152   243.15
1819.56    4.145   243.29
1820.56    4.138   243.44
1821.56    4.131   243.59
1822.56    4.124   243.74
1823.56    4.116   243.88
1824.56    4.109   244.03
1825.56    4.101   244.18
1826.56    4.093   244.33
1827.56    4.086   244.48
1828.56    4.078   244.64
1829.56    4.070   244.79
1830.56    4.062   244.94
1831.56    4.054   245.09
1832.56    4.046   245.25
1833.56    4.038   245.40
1834.56    4.030   245.56
1835.56    4.022   245.71
1836.56    4.014   245.87
1837.56    4.005   246.02
1838.56    3.997   246.18
1839.56    3.988   246.34
1840.56    3.980   246.50
1841.56    3.971   246.66
1842.56    3.962   246.82
1843.56    3.954   246.98
1844.56    3.945   247.14
1845.56    3.936   247.30
1846.56    3.927   247.47
1847.56    3.918   247.63
1848.56    3.909   247.80
1849.56    3.900   247.96
1850.56    3.891   248.13
1851.56    3.881   248.29
1852.56    3.872   248.46
1853.56    3.863   248.63
1854.56    3.853   248.80
1855.56    3.844   248.97
1856.56    3.834   249.14
1857.56    3.824   249.31
1858.56    3.815   249.49
1859.56    3.805   249.66
1860.56    3.795   249.83
1861.56    3.785   250.01
1862.56    3.775   250.19
1863.56    3.765   250.36
1864.56    3.755   250.54
1865.56    3.745   250.72
1866.56    3.735   250.90
1867.56    3.725   251.08
1868.56    3.715   251.27
1869.56    3.704   251.45
1870.56    3.694   251.63
1871.56    3.683   251.82
1872.56    3.673   252.00
1873.56    3.662   252.19
1874.56    3.652   252.38
1875.56    3.641   252.57
1876.56    3.630   252.76
1877.56    3.620   252.95
1878.56    3.609   253.15
1879.56    3.598   253.34
1880.56    3.587   253.54
1881.56    3.576   253.73
1882.56    3.565   253.93
1883.56    3.554   254.13
1884.56    3.543   254.33
1885.56    3.531   254.53
1886.56    3.520   254.73
1887.56    3.509   254.94
1888.56    3.497   255.14
1889.56    3.486   255.35
1890.56    3.475   255.56
1891.56    3.463   255.77
1892.56    3.451   255.98
1893.56    3.440   256.19
1894.56    3.428   256.40
1895.56    3.416   256.62
1896.56    3.405   256.84
1897.56    3.393   257.06
1898.56    3.381   257.27
1899.56    3.369   257.50
1900.56    3.357   257.72
1901.56    3.345   257.94
1902.56    3.333   258.17
1903.56    3.321   258.40
1904.56    3.309   258.63
1905.56    3.297   258.86
1906.56    3.285   259.09
1907.56    3.272   259.33
1908.56    3.260   259.56
1909.56    3.248   259.80
1910.56    3.235   260.04
1911.56    3.223   260.28
1912.56    3.210   260.53
1913.56    3.198   260.77
1914.56    3.185   261.02
1915.56    3.173   261.27
1916.56    3.160   261.52
1917.56    3.148   261.77
1918.56    3.135   262.03
1919.56    3.122   262.29
1920.56    3.109   262.55
1921.56    3.097   262.81
1922.56    3.084   263.07
1923.56    3.071   263.34
1924.56    3.058   263.61
1925.56    3.045   263.88
1926.56    3.032   264.15
1927.56    3.019   264.43
1928.56    3.006   264.70
1929.56    2.993   264.98
1930.56    2.980   265.27
1931.56    2.967   265.55
1932.56    2.953   265.84
1933.56    2.940   266.13
1934.56    2.927   266.42
1935.56    2.914   266.72
1936.56    2.901   267.02
1937.56    2.887   267.32
1938.56    2.874   267.62
1939.56    2.861   267.93
1940.56    2.847   268.24
1941.56    2.834   268.55
1942.56    2.821   268.87
1943.56    2.807   269.18
1944.56    2.794   269.51
1945.56    2.780   269.83
1946.56    2.767   270.16
1947.56    2.753   270.49
1948.56    2.740   270.82
1949.56    2.726   271.16
1950.56    2.713   271.50
1951.56    2.699   271.85
1952.56    2.686   272.19
1953.56    2.672   272.55
1954.56    2.659   272.90
1955.56    2.645   273.26
1956.56    2.632   273.62
1957.56    2.618   273.99
1958.56    2.604   274.36
1959.56    2.591   274.73
1960.56    2.577   275.11
1961.56    2.564   275.49
1962.56    2.550   275.88
1963.56    2.536   276.27
1964.56    2.523   276.66
1965.56    2.509   277.06
1966.56    2.496   277.46
1967.56    2.482   277.87
1968.56    2.469   278.28
1969.56    2.455   278.70
1970.56    2.442   279.12
1971.56    2.428   279.54
1972.56    2.415   279.97
1973.56    2.401   280.41
1974.56    2.388   280.85
1975.56    2.374   281.29
1976.56    2.361   281.74
1977.56    2.348   282.20
1978.56    2.334   282.66
1979.56    2.321   283.12
1980.56    2.308   283.59
1981.56    2.294   284.07
1982.56    2.281   284.55
1983.56    2.268   285.04
1984.56    2.255   285.53
1985.56    2.242   286.03
1986.56    2.229   286.53
1987.56    2.216   287.04
1988.56    2.203   287.56
1989.56    2.190   288.08
1990.56    2.177   288.61
1991.56    2.164   289.15
1992.56    2.151   289.69
1993.56    2.139   290.24
1994.56    2.126   290.79
1995.56    2.113   291.35
1996.56    2.101   291.92
1997.56    2.088   292.50
1998.56    2.076   293.08
1999.56    2.064   293.67
2000.56    2.051   294.26
2001.56    2.039   294.87
2002.56    2.027   295.48
2003.56    2.015   296.09
2004.56    2.003   296.72
2005.56    1.992   297.35
2006.56    1.980   297.99
2007.56    1.968   298.64
2008.56    1.957   299.29
2009.56    1.945   299.95
2010.56    1.934   300.62
2011.56    1.923   301.30
2012.56    1.912   301.99
2013.56    1.901   302.68
2014.56    1.890   303.38
2015.56    1.879   304.09
2016.56    1.868   304.81
2017.56    1.858   305.54
2018.56    1.847   306.27
2019.56    1.837   307.01
2020.56    1.827   307.77
2021.56    1.817   308.53
2022.56    1.807   309.29
2023.56    1.798   310.07
2024.56    1.788   310.85
2025.56    1.779   311.65
2026.56    1.769   312.45
2027.56    1.760   313.26
2028.56    1.751   314.08
2029.56    1.742   314.90
2030.56    1.734   315.74
2031.56    1.725   316.58
2032.56    1.717   317.43
2033.56    1.708   318.29
2034.56    1.700   319.16
2035.56    1.693   320.04
2036.56    1.685   320.92
2037.56    1.677   321.81
2038.56    1.670   322.71
2039.56    1.663   323.62
2040.56    1.656   324.54
2041.56    1.649   325.46
2042.56    1.642   326.39
2043.56    1.635   327.33
2044.56    1.629   328.28
2045.56    1.623   329.23
2046.56    1.617   330.19
2047.56    1.611   331.16
2048.56    1.605   332.14
2049.56    1.599   333.12
2050.56    1.594   334.11
2051.56    1.588   335.10
2052.56    1.583   336.11
2053.56    1.578   337.12
2054.56    1.573   338.13
2055.56    1.568   339.15
2056.56    1.564   340.18
2057.56    1.559   341.22
2058.56    1.555   342.26
2059.56    1.550   343.30
2060.56    1.546   344.36
2061.56    1.542   345.41
2062.56    1.537   346.48
2063.56    1.533   347.55
2064.56    1.529   348.62
2065.56    1.525   349.70
2066.56    1.521   350.79
2067.56    1.517   351.88
2068.56    1.513   352.98
2069.56    1.508   354.09
2070.56    1.504   355.20
2071.56    1.500   356.32
2072.56    1.495   357.44
2073.56    1.491   358.57
2074.56    1.486   359.71
2075.56    1.481     0.86
2076.56    1.476     2.01
2077.56    1.470     3.17
2078.56    1.464     4.35
2079.56    1.458     5.53
2080.56    1.452     6.72
2081.56    1.445     7.92
2082.56    1.438     9.13
2083.56    1.430    10.36
2084.56    1.422    11.60
2085.56    1.413    12.85
2086.56    1.404    14.12
2087.56    1.394    15.41
2088.56    1.383    16.72
2089.56    1.371    18.05
2090.56    1.359    19.40
2091.56    1.345    20.78
2092.56    1.331    22.19
2093.56    1.316    23.63
2094.56    1.299    25.10
2095.56    1.282    26.62
2096.56    1.263    28.17
2097.56    1.243    29.78
2098.56    1.222    31.44
2099.56    1.200    33.16
2100.56    1.176    34.94
2101.56    1.151    36.80
2102.56    1.125    38.75
2103.56    1.097    40.80
2104.56    1.068    42.95
2105.56    1.038    45.22
2106.56    1.007    47.63
2107.56    0.976    50.19
2108.56    0.944    52.93
2109.56    0.911    55.87
2110.56    0.878    59.02
2111.56    0.846    62.41
2112.56    0.815    66.07
2113.56    0.784    70.02
2114.56    0.756    74.27
2115.56    0.730    78.84
2116.56    0.707    83.73
2117.56    0.688    88.92
2118.56    0.672    94.38
2119.56    0.662   100.06
2120.56    0.656   105.87
2121.56    0.656   111.74
2122.56    0.661   117.55
2123.56    0.672   123.24
2124.56    0.687   128.70
2125.56    0.708   133.89
2126.56    0.732   138.76
2127.56    0.760   143.29
2128.56    0.792   147.49
2129.56    0.826   151.35
2130.56    0.862   154.89
2131.56    0.900   158.15
2132.56    0.940   161.13
2133.56    0.980   163.87
2134.56    1.022   166.38
2135.56    1.065   168.70
2136.56    1.108   170.84
2137.56    1.151   172.82
2138.56    1.195   174.65
2139.56    1.238   176.36
2140.56    1.282   177.94
2141.56    1.326   179.43
2142.56    1.369   180.82
2143.56    1.413   182.12
2144.56    1.456   183.35
2145.56    1.498   184.50
2146.56    1.541   185.59
2147.56    1.583   186.63
2148.56    1.625   187.61
2149.56    1.666   188.54
2150.56    1.707   189.43
2151.56    1.748   190.27
2152.56    1.788   191.08
2153.56    1.827   191.85
2154.56    1.866   192.59
2155.56    1.905   193.30
2156.56    1.944   193.98
2157.56    1.981   194.63
2158.56    2.019   195.26
2159.56    2.056   195.87
2160.56    2.092   196.46
2161.56    2.128   197.02
2162.56    2.164   197.57
2163.56    2.199   198.10
2164.56    2.234   198.61
2165.56    2.268   199.11
2166.56    2.302   199.59
2167.56    2.336   200.06
2168.56    2.369   200.52
2169.56    2.401   200.96
2170.56    2.434   201.39
2171.56    2.465   201.81
2172.56    2.497   202.22
2173.56    2.528   202.62
2174.56    2.559   203.01
2175.56    2.589   203.39
2176.56    2.619   203.77
2177.56    2.648   204.13
2178.56    2.677   204.48
2179.56    2.706   204.83
2180.56    2.734   205.17
2181.56    2.762   205.51
2182.56    2.790   205.83
2183.56    2.817   206.16
2184.56    2.844   206.47
2185.56    2.871   206.78
2186.56    2.897   207.08
2187.56    2.923   207.38
2188.56    2.949   207.67
2189.56    2.974   207.96
2190.56    2.999   208.24
2191.56    3.024   208.52
2192.56    3.048   208.79
2193.56    3.072   209.06
2194.56    3.096   209.33
2195.56    3.119   209.59
2196.56    3.143   209.85
2197.56    3.165   210.10
2198.56    3.188   210.35
2199.56    3.210   210.60
2200.56    3.232   210.84
2201.56    3.254   211.08
2202.56    3.276   211.32
2203.56    3.297   211.55
2204.56    3.318   211.78
2205.56    3.338   212.01
2206.56    3.359   212.23
2207.56    3.379   212.45
2208.56    3.399   212.67
2209.56    3.418   212.89
2210.56    3.438   213.11
2211.56    3.457   213.32
2212.56    3.476   213.53
2213.56    3.494   213.74
2214.56    3.513   213.94
2215.56    3.531   214.14
2216.56    3.549   214.35
2217.56    3.566   214.54
2218.56    3.584   214.74
2219.56    3.601   214.94
2220.56    3.618   215.13
2221.56    3.635   215.32
2222.56    3.651   215.51
2223.56    3.668   215.70
2224.56    3.684   215.89
2225.56    3.700   216.07
2226.56    3.715   216.26
2227.56    3.731   216.44
2228.56    3.746   216.62
2229.56    3.761   216.80
2230.56    3.776   216.97
2231.56    3.791   217.15
2232.56    3.805   217.33
2233.56    3.819   217.50
2234.56    3.833   217.67
2235.56    3.847   217.84
2236.56    3.861   218.01
2237.56    3.874   218.18
2238.56    3.888   218.35
2239.56    3.901   218.51
2240.56    3.914   218.68
2241.56    3.927   218.84
2242.56    3.939   219.01
2243.56    3.951   219.17
2244.56    3.964   219.33
2245.56    3.976   219.49
2246.56    3.988   219.65
2247.56    3.999   219.81
2248.56    4.011   219.96
2249.56    4.022   220.12
2250.56    4.033   220.28
2251.56    4.044   220.43
2252.56    4.055   220.58
2253.56    4.066   220.74
2254.56    4.076   220.89
2255.56    4.086   221.04
2256.56    4.097   221.19
2257.56    4.107   221.34
2258.56    4.116   221.49
2259.56    4.126   221.64
2260.56    4.136   221.79
2261.56    4.145   221.93
2262.56    4.154   222.08
2263.56    4.163   222.23
2264.56    4.172   222.37
2265.56    4.181   222.52
2266.56    4.189   222.66
2267.56    4.198   222.80
2268.56    4.206   222.95
2269.56    4.214   223.09
2270.56    4.222   223.23
2271.56    4.230   223.37
2272.56    4.238   223.51
2273.56    4.245   223.65
2274.56    4.253   223.79
2275.56    4.260   223.93
2276.56    4.267   224.07
2277.56    4.274   224.21
2278.56    4.281   224.34
2279.56    4.288   224.48
2280.56    4.294   224.62
2281.56    4.301   224.76
2282.56    4.307   224.89
2283.56    4.313   225.03
2284.56    4.320   225.16
2285.56    4.325   225.30
2286.56    4.331   225.43
2287.56    4.337   225.57
2288.56    4.342   225.70
2289.56    4.348   225.83
2290.56    4.353   225.97
2291.56    4.358   226.10
2292.56    4.363   226.23
2293.56    4.368   226.36
2294.56    4.373   226.50
2295.56    4.378   226.63
2296.56    4.382   226.76
2297.56    4.386   226.89
2298.56    4.391   227.02
2299.56    4.395   227.15
2300.56    4.399   227.28
2301.56    4.403   227.41
2302.56    4.407   227.54
2303.56    4.410   227.67
2304.56    4.414   227.80
2305.56    4.417   227.93
2306.56    4.421   228.06
2307.56    4.424   228.19
2308.56    4.427   228.32
2309.56    4.430   228.45
2310.56    4.433   228.58
2311.56    4.435   228.70
2312.56    4.438   228.83
2313.56    4.441   228.96
2314.56    4.443   229.09
2315.56    4.445   229.22
2316.56    4.447   229.34
2317.56    4.450   229.47
2318.56    4.452   229.60
2319.56    4.453   229.73
2320.56    4.455   229.85
2321.56    4.457   229.98
2322.56    4.458   230.11
2323.56    4.460   230.23
2324.56    4.461   230.36
2325.56    4.462   230.49






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 18:43:48



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