Double Star Calculator - Orbit

Orbital Elements for STF1280AB
WDS: STF1280AB WDS ID/Discoverer
P: 688.512 Orbital period (years)
a: 7.18257 Semi-major axis (arcseconds)
i: 60.483 Inclination (degrees)
Ω: 0.372 Longitude of ascending node (degrees)
T: 1994.345 Epoch of periastron passage (year)
e: 0.89905 Eccentricity
ω: 221.491 Longitude of periastron (degrees)
Start-Year: 1680.7440000000001 Year
End-Year: 2369.256 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1280AB
Position: 085524.82+704739.2 Epoch-2000 right ascension and declination
WDS-ID: 08554+7048 WDS designation
Discoverer Code: STF1280AB Discover designation and components
ADS number: 7067 Aitken Double Star catalog
HD number: 75632 HD catalog number
Hipparcos number: 43820 Hipparcos catalog number
V1: 8.81 Magnitude of the primary
V2: 9.10 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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: Izm2019 Reference

Double Star Orbit for STF1280AB



WDS 6th Orbit including measures of STF1280AB

-- 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 STF1280AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.202     0.32
--------------------------
1680.74   10.872    25.39
1681.74   10.861    25.44
1682.74   10.850    25.49
1683.74   10.839    25.53
1684.74   10.828    25.58
1685.74   10.816    25.63
1686.74   10.805    25.68
1687.74   10.793    25.73
1688.74   10.781    25.78
1689.74   10.770    25.83
1690.74   10.758    25.88
1691.74   10.745    25.93
1692.74   10.733    25.98
1693.74   10.721    26.04
1694.74   10.708    26.09
1695.74   10.695    26.14
1696.74   10.683    26.19
1697.74   10.670    26.24
1698.74   10.657    26.29
1699.74   10.643    26.34
1700.74   10.630    26.39
1701.74   10.617    26.44
1702.74   10.603    26.50
1703.74   10.589    26.55
1704.74   10.576    26.60
1705.74   10.562    26.65
1706.74   10.548    26.70
1707.74   10.533    26.76
1708.74   10.519    26.81
1709.74   10.505    26.86
1710.74   10.490    26.91
1711.74   10.475    26.97
1712.74   10.461    27.02
1713.74   10.446    27.07
1714.74   10.431    27.13
1715.74   10.415    27.18
1716.74   10.400    27.23
1717.74   10.385    27.29
1718.74   10.369    27.34
1719.74   10.353    27.40
1720.74   10.338    27.45
1721.74   10.322    27.51
1722.74   10.305    27.56
1723.74   10.289    27.62
1724.74   10.273    27.67
1725.74   10.256    27.73
1726.74   10.240    27.78
1727.74   10.223    27.84
1728.74   10.206    27.89
1729.74   10.189    27.95
1730.74   10.172    28.00
1731.74   10.155    28.06
1732.74   10.138    28.12
1733.74   10.120    28.17
1734.74   10.102    28.23
1735.74   10.085    28.29
1736.74   10.067    28.35
1737.74   10.049    28.40
1738.74   10.031    28.46
1739.74   10.012    28.52
1740.74    9.994    28.58
1741.74    9.975    28.63
1742.74    9.957    28.69
1743.74    9.938    28.75
1744.74    9.919    28.81
1745.74    9.900    28.87
1746.74    9.881    28.93
1747.74    9.861    28.99
1748.74    9.842    29.05
1749.74    9.822    29.11
1750.74    9.803    29.17
1751.74    9.783    29.23
1752.74    9.763    29.29
1753.74    9.743    29.35
1754.74    9.723    29.41
1755.74    9.702    29.48
1756.74    9.682    29.54
1757.74    9.661    29.60
1758.74    9.640    29.66
1759.74    9.620    29.73
1760.74    9.598    29.79
1761.74    9.577    29.85
1762.74    9.556    29.92
1763.74    9.535    29.98
1764.74    9.513    30.04
1765.74    9.491    30.11
1766.74    9.470    30.17
1767.74    9.448    30.24
1768.74    9.426    30.30
1769.74    9.403    30.37
1770.74    9.381    30.43
1771.74    9.358    30.50
1772.74    9.336    30.57
1773.74    9.313    30.63
1774.74    9.290    30.70
1775.74    9.267    30.77
1776.74    9.244    30.84
1777.74    9.221    30.91
1778.74    9.197    30.97
1779.74    9.174    31.04
1780.74    9.150    31.11
1781.74    9.126    31.18
1782.74    9.102    31.25
1783.74    9.078    31.32
1784.74    9.054    31.39
1785.74    9.029    31.46
1786.74    9.005    31.54
1787.74    8.980    31.61
1788.74    8.955    31.68
1789.74    8.930    31.75
1790.74    8.905    31.83
1791.74    8.880    31.90
1792.74    8.855    31.97
1793.74    8.829    32.05
1794.74    8.803    32.12
1795.74    8.778    32.20
1796.74    8.752    32.27
1797.74    8.726    32.35
1798.74    8.699    32.43
1799.74    8.673    32.50
1800.74    8.646    32.58
1801.74    8.620    32.66
1802.74    8.593    32.74
1803.74    8.566    32.82
1804.74    8.539    32.90
1805.74    8.512    32.98
1806.74    8.484    33.06
1807.74    8.457    33.14
1808.74    8.429    33.22
1809.74    8.401    33.30
1810.74    8.373    33.39
1811.74    8.345    33.47
1812.74    8.317    33.55
1813.74    8.289    33.64
1814.74    8.260    33.72
1815.74    8.231    33.81
1816.74    8.202    33.89
1817.74    8.173    33.98
1818.74    8.144    34.07
1819.74    8.115    34.16
1820.74    8.086    34.24
1821.74    8.056    34.33
1822.74    8.026    34.42
1823.74    7.996    34.51
1824.74    7.966    34.61
1825.74    7.936    34.70
1826.74    7.906    34.79
1827.74    7.875    34.88
1828.74    7.844    34.98
1829.74    7.814    35.07
1830.74    7.783    35.17
1831.74    7.751    35.27
1832.74    7.720    35.36
1833.74    7.689    35.46
1834.74    7.657    35.56
1835.74    7.625    35.66
1836.74    7.593    35.76
1837.74    7.561    35.86
1838.74    7.529    35.96
1839.74    7.497    36.07
1840.74    7.464    36.17
1841.74    7.431    36.28
1842.74    7.398    36.38
1843.74    7.365    36.49
1844.74    7.332    36.60
1845.74    7.299    36.70
1846.74    7.265    36.81
1847.74    7.231    36.92
1848.74    7.198    37.04
1849.74    7.164    37.15
1850.74    7.129    37.26
1851.74    7.095    37.38
1852.74    7.060    37.49
1853.74    7.026    37.61
1854.74    6.991    37.73
1855.74    6.956    37.85
1856.74    6.920    37.97
1857.74    6.885    38.09
1858.74    6.849    38.22
1859.74    6.814    38.34
1860.74    6.778    38.47
1861.74    6.742    38.59
1862.74    6.705    38.72
1863.74    6.669    38.85
1864.74    6.632    38.98
1865.74    6.596    39.12
1866.74    6.559    39.25
1867.74    6.521    39.39
1868.74    6.484    39.53
1869.74    6.447    39.67
1870.74    6.409    39.81
1871.74    6.371    39.95
1872.74    6.333    40.09
1873.74    6.295    40.24
1874.74    6.256    40.39
1875.74    6.218    40.54
1876.74    6.179    40.69
1877.74    6.140    40.84
1878.74    6.101    41.00
1879.74    6.061    41.15
1880.74    6.022    41.31
1881.74    5.982    41.47
1882.74    5.942    41.64
1883.74    5.902    41.80
1884.74    5.862    41.97
1885.74    5.821    42.14
1886.74    5.780    42.32
1887.74    5.739    42.49
1888.74    5.698    42.67
1889.74    5.657    42.85
1890.74    5.615    43.03
1891.74    5.574    43.22
1892.74    5.532    43.41
1893.74    5.490    43.60
1894.74    5.447    43.79
1895.74    5.405    43.99
1896.74    5.362    44.19
1897.74    5.319    44.40
1898.74    5.276    44.60
1899.74    5.233    44.81
1900.74    5.189    45.03
1901.74    5.145    45.25
1902.74    5.102    45.47
1903.74    5.057    45.69
1904.74    5.013    45.92
1905.74    4.968    46.16
1906.74    4.924    46.39
1907.74    4.879    46.64
1908.74    4.833    46.88
1909.74    4.788    47.14
1910.74    4.742    47.39
1911.74    4.696    47.65
1912.74    4.650    47.92
1913.74    4.604    48.19
1914.74    4.557    48.47
1915.74    4.510    48.75
1916.74    4.463    49.04
1917.74    4.416    49.34
1918.74    4.369    49.64
1919.74    4.321    49.95
1920.74    4.273    50.26
1921.74    4.225    50.58
1922.74    4.177    50.91
1923.74    4.128    51.25
1924.74    4.079    51.60
1925.74    4.030    51.95
1926.74    3.981    52.31
1927.74    3.932    52.68
1928.74    3.882    53.07
1929.74    3.832    53.46
1930.74    3.782    53.86
1931.74    3.732    54.27
1932.74    3.681    54.69
1933.74    3.630    55.13
1934.74    3.579    55.58
1935.74    3.528    56.04
1936.74    3.477    56.51
1937.74    3.425    57.00
1938.74    3.373    57.50
1939.74    3.321    58.02
1940.74    3.269    58.56
1941.74    3.216    59.11
1942.74    3.164    59.68
1943.74    3.111    60.28
1944.74    3.058    60.89
1945.74    3.005    61.52
1946.74    2.951    62.18
1947.74    2.898    62.86
1948.74    2.844    63.56
1949.74    2.790    64.30
1950.74    2.737    65.06
1951.74    2.683    65.85
1952.74    2.628    66.68
1953.74    2.574    67.54
1954.74    2.520    68.43
1955.74    2.466    69.37
1956.74    2.411    70.35
1957.74    2.357    71.37
1958.74    2.303    72.44
1959.74    2.248    73.57
1960.74    2.194    74.75
1961.74    2.140    75.99
1962.74    2.086    77.29
1963.74    2.033    78.66
1964.74    1.980    80.11
1965.74    1.927    81.63
1966.74    1.874    83.25
1967.74    1.822    84.95
1968.74    1.771    86.75
1969.74    1.720    88.66
1970.74    1.670    90.69
1971.74    1.621    92.84
1972.74    1.573    95.12
1973.74    1.526    97.55
1974.74    1.480   100.12
1975.74    1.436   102.86
1976.74    1.394   105.77
1977.74    1.353   108.85
1978.74    1.314   112.13
1979.74    1.277   115.60
1980.74    1.242   119.27
1981.74    1.210   123.14
1982.74    1.179   127.22
1983.74    1.151   131.51
1984.74    1.124   136.01
1985.74    1.098   140.73
1986.74    1.073   145.67
1987.74    1.046   150.85
1988.74    1.017   156.32
1989.74    0.981   162.14
1990.74    0.934   168.48
1991.74    0.871   175.61
1992.74    0.784   184.09
1993.74    0.670   195.11
1994.74    0.541   211.16
1995.74    0.437   236.26
1996.74    0.423   269.18
1997.74    0.517   296.59
1998.74    0.671   313.52
1999.74    0.844   323.81
2000.74    1.022   330.56
2001.74    1.196   335.31
2002.74    1.366   338.87
2003.74    1.530   341.65
2004.74    1.689   343.90
2005.74    1.842   345.77
2006.74    1.989   347.36
2007.74    2.132   348.73
2008.74    2.270   349.93
2009.74    2.403   351.00
2010.74    2.533   351.96
2011.74    2.659   352.82
2012.74    2.781   353.61
2013.74    2.900   354.33
2014.74    3.016   354.99
2015.74    3.130   355.61
2016.74    3.240   356.18
2017.74    3.348   356.72
2018.74    3.454   357.22
2019.74    3.557   357.70
2020.74    3.658   358.14
2021.74    3.757   358.57
2022.74    3.854   358.97
2023.74    3.949   359.35
2024.74    4.042   359.71
2025.74    4.133     0.06
2026.74    4.223     0.40
2027.74    4.312     0.72
2028.74    4.398     1.02
2029.74    4.484     1.32
2030.74    4.567     1.60
2031.74    4.650     1.88
2032.74    4.731     2.14
2033.74    4.811     2.40
2034.74    4.889     2.64
2035.74    4.967     2.88
2036.74    5.043     3.12
2037.74    5.118     3.34
2038.74    5.192     3.56
2039.74    5.266     3.77
2040.74    5.338     3.98
2041.74    5.409     4.18
2042.74    5.479     4.38
2043.74    5.548     4.57
2044.74    5.616     4.76
2045.74    5.683     4.94
2046.74    5.750     5.12
2047.74    5.815     5.29
2048.74    5.880     5.46
2049.74    5.944     5.63
2050.74    6.007     5.79
2051.74    6.069     5.95
2052.74    6.131     6.11
2053.74    6.192     6.26
2054.74    6.252     6.41
2055.74    6.311     6.56
2056.74    6.370     6.70
2057.74    6.428     6.84
2058.74    6.486     6.98
2059.74    6.542     7.12
2060.74    6.598     7.26
2061.74    6.654     7.39
2062.74    6.709     7.52
2063.74    6.763     7.65
2064.74    6.817     7.77
2065.74    6.870     7.90
2066.74    6.922     8.02
2067.74    6.974     8.14
2068.74    7.026     8.26
2069.74    7.076     8.38
2070.74    7.127     8.49
2071.74    7.176     8.60
2072.74    7.226     8.72
2073.74    7.274     8.83
2074.74    7.323     8.94
2075.74    7.370     9.04
2076.74    7.418     9.15
2077.74    7.465     9.26
2078.74    7.511     9.36
2079.74    7.557     9.46
2080.74    7.602     9.56
2081.74    7.647     9.66
2082.74    7.692     9.76
2083.74    7.736     9.86
2084.74    7.779     9.96
2085.74    7.822    10.05
2086.74    7.865    10.15
2087.74    7.908    10.24
2088.74    7.949    10.33
2089.74    7.991    10.43
2090.74    8.032    10.52
2091.74    8.073    10.61
2092.74    8.113    10.69
2093.74    8.153    10.78
2094.74    8.193    10.87
2095.74    8.232    10.96
2096.74    8.271    11.04
2097.74    8.309    11.13
2098.74    8.347    11.21
2099.74    8.385    11.29
2100.74    8.422    11.38
2101.74    8.459    11.46
2102.74    8.496    11.54
2103.74    8.532    11.62
2104.74    8.568    11.70
2105.74    8.604    11.78
2106.74    8.639    11.86
2107.74    8.674    11.93
2108.74    8.709    12.01
2109.74    8.743    12.09
2110.74    8.777    12.16
2111.74    8.811    12.24
2112.74    8.844    12.31
2113.74    8.877    12.39
2114.74    8.910    12.46
2115.74    8.943    12.53
2116.74    8.975    12.61
2117.74    9.007    12.68
2118.74    9.038    12.75
2119.74    9.069    12.82
2120.74    9.100    12.89
2121.74    9.131    12.96
2122.74    9.161    13.03
2123.74    9.192    13.10
2124.74    9.221    13.17
2125.74    9.251    13.24
2126.74    9.280    13.30
2127.74    9.309    13.37
2128.74    9.338    13.44
2129.74    9.366    13.50
2130.74    9.394    13.57
2131.74    9.422    13.64
2132.74    9.450    13.70
2133.74    9.477    13.77
2134.74    9.504    13.83
2135.74    9.531    13.90
2136.74    9.558    13.96
2137.74    9.584    14.02
2138.74    9.610    14.09
2139.74    9.636    14.15
2140.74    9.662    14.21
2141.74    9.687    14.27
2142.74    9.712    14.34
2143.74    9.737    14.40
2144.74    9.762    14.46
2145.74    9.786    14.52
2146.74    9.810    14.58
2147.74    9.834    14.64
2148.74    9.858    14.70
2149.74    9.881    14.76
2150.74    9.904    14.82
2151.74    9.927    14.88
2152.74    9.950    14.94
2153.74    9.973    15.00
2154.74    9.995    15.05
2155.74   10.017    15.11
2156.74   10.039    15.17
2157.74   10.060    15.23
2158.74   10.082    15.29
2159.74   10.103    15.34
2160.74   10.124    15.40
2161.74   10.145    15.46
2162.74   10.165    15.51
2163.74   10.186    15.57
2164.74   10.206    15.62
2165.74   10.226    15.68
2166.74   10.245    15.74
2167.74   10.265    15.79
2168.74   10.284    15.85
2169.74   10.303    15.90
2170.74   10.322    15.96
2171.74   10.340    16.01
2172.74   10.359    16.06
2173.74   10.377    16.12
2174.74   10.395    16.17
2175.74   10.413    16.23
2176.74   10.431    16.28
2177.74   10.448    16.33
2178.74   10.465    16.39
2179.74   10.482    16.44
2180.74   10.499    16.49
2181.74   10.516    16.55
2182.74   10.532    16.60
2183.74   10.549    16.65
2184.74   10.565    16.70
2185.74   10.581    16.75
2186.74   10.596    16.81
2187.74   10.612    16.86
2188.74   10.627    16.91
2189.74   10.642    16.96
2190.74   10.657    17.01
2191.74   10.672    17.06
2192.74   10.687    17.11
2193.74   10.701    17.17
2194.74   10.715    17.22
2195.74   10.730    17.27
2196.74   10.743    17.32
2197.74   10.757    17.37
2198.74   10.771    17.42
2199.74   10.784    17.47
2200.74   10.797    17.52
2201.74   10.810    17.57
2202.74   10.823    17.62
2203.74   10.835    17.67
2204.74   10.848    17.72
2205.74   10.860    17.77
2206.74   10.872    17.82
2207.74   10.884    17.86
2208.74   10.896    17.91
2209.74   10.908    17.96
2210.74   10.919    18.01
2211.74   10.930    18.06
2212.74   10.941    18.11
2213.74   10.952    18.16
2214.74   10.963    18.21
2215.74   10.974    18.25
2216.74   10.984    18.30
2217.74   10.994    18.35
2218.74   11.004    18.40
2219.74   11.014    18.45
2220.74   11.024    18.49
2221.74   11.034    18.54
2222.74   11.043    18.59
2223.74   11.052    18.64
2224.74   11.061    18.69
2225.74   11.070    18.73
2226.74   11.079    18.78
2227.74   11.088    18.83
2228.74   11.096    18.88
2229.74   11.105    18.92
2230.74   11.113    18.97
2231.74   11.121    19.02
2232.74   11.129    19.06
2233.74   11.136    19.11
2234.74   11.144    19.16
2235.74   11.151    19.20
2236.74   11.158    19.25
2237.74   11.165    19.30
2238.74   11.172    19.34
2239.74   11.179    19.39
2240.74   11.186    19.44
2241.74   11.192    19.48
2242.74   11.198    19.53
2243.74   11.205    19.58
2244.74   11.211    19.62
2245.74   11.216    19.67
2246.74   11.222    19.72
2247.74   11.228    19.76
2248.74   11.233    19.81
2249.74   11.238    19.85
2250.74   11.243    19.90
2251.74   11.248    19.95
2252.74   11.253    19.99
2253.74   11.258    20.04
2254.74   11.262    20.08
2255.74   11.267    20.13
2256.74   11.271    20.18
2257.74   11.275    20.22
2258.74   11.279    20.27
2259.74   11.282    20.31
2260.74   11.286    20.36
2261.74   11.290    20.40
2262.74   11.293    20.45
2263.74   11.296    20.50
2264.74   11.299    20.54
2265.74   11.302    20.59
2266.74   11.305    20.63
2267.74   11.307    20.68
2268.74   11.310    20.72
2269.74   11.312    20.77
2270.74   11.314    20.81
2271.74   11.316    20.86
2272.74   11.318    20.91
2273.74   11.320    20.95
2274.74   11.322    21.00
2275.74   11.323    21.04
2276.74   11.324    21.09
2277.74   11.326    21.13
2278.74   11.327    21.18
2279.74   11.328    21.22
2280.74   11.328    21.27
2281.74   11.329    21.31
2282.74   11.330    21.36
2283.74   11.330    21.40
2284.74   11.330    21.45
2285.74   11.330    21.49
2286.74   11.330    21.54
2287.74   11.330    21.59
2288.74   11.330    21.63
2289.74   11.329    21.68
2290.74   11.329    21.72
2291.74   11.328    21.77
2292.74   11.327    21.81
2293.74   11.326    21.86
2294.74   11.325    21.90
2295.74   11.324    21.95
2296.74   11.322    21.99
2297.74   11.321    22.04
2298.74   11.319    22.08
2299.74   11.317    22.13
2300.74   11.315    22.18
2301.74   11.313    22.22
2302.74   11.311    22.27
2303.74   11.309    22.31
2304.74   11.306    22.36
2305.74   11.304    22.40
2306.74   11.301    22.45
2307.74   11.298    22.49
2308.74   11.295    22.54
2309.74   11.292    22.59
2310.74   11.289    22.63
2311.74   11.285    22.68
2312.74   11.282    22.72
2313.74   11.278    22.77
2314.74   11.274    22.81
2315.74   11.270    22.86
2316.74   11.266    22.91
2317.74   11.262    22.95
2318.74   11.258    23.00
2319.74   11.253    23.04
2320.74   11.249    23.09
2321.74   11.244    23.13
2322.74   11.239    23.18
2323.74   11.234    23.23
2324.74   11.229    23.27
2325.74   11.224    23.32
2326.74   11.218    23.37
2327.74   11.213    23.41
2328.74   11.207    23.46
2329.74   11.202    23.50
2330.74   11.196    23.55
2331.74   11.190    23.60
2332.74   11.184    23.64
2333.74   11.177    23.69
2334.74   11.171    23.74
2335.74   11.164    23.78
2336.74   11.158    23.83
2337.74   11.151    23.88
2338.74   11.144    23.92
2339.74   11.137    23.97
2340.74   11.130    24.02
2341.74   11.123    24.06
2342.74   11.115    24.11
2343.74   11.108    24.16
2344.74   11.100    24.21
2345.74   11.092    24.25
2346.74   11.084    24.30
2347.74   11.076    24.35
2348.74   11.068    24.40
2349.74   11.060    24.44
2350.74   11.051    24.49
2351.74   11.043    24.54
2352.74   11.034    24.59
2353.74   11.025    24.63
2354.74   11.016    24.68
2355.74   11.007    24.73
2356.74   10.998    24.78
2357.74   10.989    24.83
2358.74   10.979    24.87
2359.74   10.970    24.92
2360.74   10.960    24.97
2361.74   10.950    25.02
2362.74   10.940    25.07
2363.74   10.930    25.12
2364.74   10.920    25.17
2365.74   10.910    25.21
2366.74   10.899    25.26
2367.74   10.888    25.31
2368.74   10.878    25.36






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 16:12:36



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