Double Star Calculator - Orbit

Orbital Elements for STF728
WDS: STF728 WDS ID/Discoverer
P: 613.690 Orbital period (years)
a: 1.604 Semi-major axis (arcseconds)
i: 96.6 Inclination (degrees)
Ω: 217.1 Longitude of ascending node (degrees)
T: 2297.030 Epoch of periastron passage (year)
e: 0.221 Eccentricity
ω: 302.5 Longitude of periastron (degrees)
Start-Year: 1718.155 Year
End-Year: 2331.8450000000003 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF728
Position: 053047.06+055653.3 Epoch-2000 right ascension and declination
WDS-ID: 05308+0557 WDS designation
Discoverer Code: STF728 Discover designation and components
ADS number: 4115 Aitken Double Star catalog
HD number: 36267 HD catalog number
Hipparcos number: 25813 Hipparcos catalog number
V1: 4.44 Magnitude of the primary
V2: 5.75 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1998 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: USN1999b Reference

Double Star Orbit for STF728



WDS 6th Orbit including measures of STF728

-- 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 STF728
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.417    43.32
--------------------------
1718.15    1.164   220.21
1719.15    1.174   220.09
1720.15    1.184   219.96
1721.15    1.193   219.84
1722.15    1.203   219.73
1723.15    1.212   219.61
1724.15    1.221   219.50
1725.15    1.230   219.38
1726.15    1.238   219.27
1727.15    1.246   219.16
1728.15    1.254   219.05
1729.15    1.262   218.95
1730.15    1.269   218.84
1731.15    1.277   218.74
1732.15    1.284   218.63
1733.15    1.290   218.53
1734.15    1.297   218.43
1735.15    1.303   218.33
1736.15    1.309   218.23
1737.15    1.315   218.13
1738.15    1.321   218.04
1739.15    1.326   217.94
1740.15    1.331   217.84
1741.15    1.336   217.75
1742.15    1.341   217.65
1743.15    1.345   217.56
1744.15    1.349   217.47
1745.15    1.353   217.37
1746.15    1.357   217.28
1747.15    1.360   217.19
1748.15    1.364   217.10
1749.15    1.367   217.01
1750.15    1.370   216.92
1751.15    1.372   216.83
1752.15    1.374   216.74
1753.15    1.377   216.65
1754.15    1.378   216.56
1755.15    1.380   216.47
1756.15    1.382   216.38
1757.15    1.383   216.29
1758.15    1.384   216.21
1759.15    1.385   216.12
1760.15    1.385   216.03
1761.15    1.386   215.94
1762.15    1.386   215.85
1763.15    1.386   215.76
1764.15    1.385   215.68
1765.15    1.385   215.59
1766.15    1.384   215.50
1767.15    1.383   215.41
1768.15    1.382   215.32
1769.15    1.381   215.23
1770.15    1.380   215.15
1771.15    1.378   215.06
1772.15    1.376   214.97
1773.15    1.374   214.88
1774.15    1.372   214.79
1775.15    1.369   214.70
1776.15    1.367   214.61
1777.15    1.364   214.52
1778.15    1.361   214.43
1779.15    1.358   214.33
1780.15    1.354   214.24
1781.15    1.351   214.15
1782.15    1.347   214.06
1783.15    1.343   213.96
1784.15    1.339   213.87
1785.15    1.335   213.77
1786.15    1.330   213.68
1787.15    1.326   213.58
1788.15    1.321   213.49
1789.15    1.316   213.39
1790.15    1.311   213.29
1791.15    1.306   213.19
1792.15    1.300   213.09
1793.15    1.295   212.99
1794.15    1.289   212.89
1795.15    1.283   212.79
1796.15    1.277   212.69
1797.15    1.271   212.58
1798.15    1.265   212.48
1799.15    1.258   212.37
1800.15    1.252   212.26
1801.15    1.245   212.15
1802.15    1.238   212.04
1803.15    1.231   211.93
1804.15    1.224   211.82
1805.15    1.216   211.71
1806.15    1.209   211.59
1807.15    1.201   211.48
1808.15    1.194   211.36
1809.15    1.186   211.24
1810.15    1.178   211.12
1811.15    1.170   210.99
1812.15    1.162   210.87
1813.15    1.154   210.74
1814.15    1.145   210.62
1815.15    1.137   210.49
1816.15    1.128   210.35
1817.15    1.119   210.22
1818.15    1.110   210.08
1819.15    1.101   209.94
1820.15    1.092   209.80
1821.15    1.083   209.66
1822.15    1.074   209.52
1823.15    1.065   209.37
1824.15    1.055   209.22
1825.15    1.046   209.06
1826.15    1.036   208.91
1827.15    1.026   208.75
1828.15    1.016   208.59
1829.15    1.006   208.42
1830.15    0.996   208.25
1831.15    0.986   208.08
1832.15    0.976   207.90
1833.15    0.966   207.72
1834.15    0.955   207.54
1835.15    0.945   207.35
1836.15    0.934   207.16
1837.15    0.924   206.97
1838.15    0.913   206.77
1839.15    0.902   206.56
1840.15    0.892   206.35
1841.15    0.881   206.13
1842.15    0.870   205.91
1843.15    0.859   205.69
1844.15    0.848   205.45
1845.15    0.837   205.22
1846.15    0.825   204.97
1847.15    0.814   204.72
1848.15    0.803   204.46
1849.15    0.792   204.19
1850.15    0.780   203.92
1851.15    0.769   203.64
1852.15    0.757   203.35
1853.15    0.746   203.05
1854.15    0.734   202.74
1855.15    0.722   202.42
1856.15    0.711   202.09
1857.15    0.699   201.75
1858.15    0.687   201.40
1859.15    0.676   201.03
1860.15    0.664   200.66
1861.15    0.652   200.27
1862.15    0.640   199.86
1863.15    0.629   199.44
1864.15    0.617   199.00
1865.15    0.605   198.55
1866.15    0.593   198.08
1867.15    0.581   197.59
1868.15    0.569   197.08
1869.15    0.557   196.54
1870.15    0.546   195.99
1871.15    0.534   195.41
1872.15    0.522   194.80
1873.15    0.510   194.16
1874.15    0.498   193.50
1875.15    0.487   192.80
1876.15    0.475   192.07
1877.15    0.463   191.30
1878.15    0.452   190.49
1879.15    0.440   189.64
1880.15    0.429   188.74
1881.15    0.417   187.80
1882.15    0.406   186.80
1883.15    0.395   185.74
1884.15    0.384   184.62
1885.15    0.373   183.44
1886.15    0.362   182.19
1887.15    0.351   180.86
1888.15    0.341   179.44
1889.15    0.330   177.94
1890.15    0.320   176.34
1891.15    0.311   174.64
1892.15    0.301   172.83
1893.15    0.292   170.90
1894.15    0.283   168.85
1895.15    0.274   166.67
1896.15    0.266   164.35
1897.15    0.258   161.89
1898.15    0.251   159.29
1899.15    0.245   156.53
1900.15    0.238   153.63
1901.15    0.233   150.58
1902.15    0.228   147.39
1903.15    0.224   144.08
1904.15    0.221   140.66
1905.15    0.218   137.14
1906.15    0.216   133.56
1907.15    0.216   129.93
1908.15    0.216   126.29
1909.15    0.216   122.66
1910.15    0.218   119.08
1911.15    0.221   115.56
1912.15    0.224   112.13
1913.15    0.228   108.82
1914.15    0.233   105.63
1915.15    0.238   102.58
1916.15    0.244    99.68
1917.15    0.251    96.92
1918.15    0.258    94.31
1919.15    0.266    91.85
1920.15    0.274    89.53
1921.15    0.283    87.34
1922.15    0.292    85.29
1923.15    0.301    83.36
1924.15    0.310    81.55
1925.15    0.320    79.85
1926.15    0.330    78.25
1927.15    0.341    76.75
1928.15    0.351    75.33
1929.15    0.362    74.00
1930.15    0.373    72.75
1931.15    0.384    71.56
1932.15    0.395    70.45
1933.15    0.406    69.39
1934.15    0.417    68.39
1935.15    0.429    67.45
1936.15    0.440    66.55
1937.15    0.452    65.70
1938.15    0.464    64.89
1939.15    0.475    64.13
1940.15    0.487    63.39
1941.15    0.499    62.70
1942.15    0.511    62.03
1943.15    0.523    61.40
1944.15    0.535    60.80
1945.15    0.547    60.22
1946.15    0.558    59.66
1947.15    0.570    59.13
1948.15    0.582    58.62
1949.15    0.594    58.13
1950.15    0.607    57.66
1951.15    0.619    57.21
1952.15    0.631    56.78
1953.15    0.643    56.36
1954.15    0.655    55.96
1955.15    0.667    55.57
1956.15    0.679    55.20
1957.15    0.691    54.84
1958.15    0.703    54.49
1959.15    0.714    54.15
1960.15    0.726    53.83
1961.15    0.738    53.51
1962.15    0.750    53.20
1963.15    0.762    52.91
1964.15    0.774    52.62
1965.15    0.786    52.34
1966.15    0.798    52.07
1967.15    0.809    51.81
1968.15    0.821    51.56
1969.15    0.833    51.31
1970.15    0.844    51.07
1971.15    0.856    50.83
1972.15    0.868    50.61
1973.15    0.879    50.38
1974.15    0.891    50.17
1975.15    0.902    49.96
1976.15    0.914    49.75
1977.15    0.925    49.55
1978.15    0.936    49.36
1979.15    0.948    49.17
1980.15    0.959    48.98
1981.15    0.970    48.80
1982.15    0.981    48.62
1983.15    0.992    48.45
1984.15    1.004    48.28
1985.15    1.015    48.11
1986.15    1.026    47.95
1987.15    1.036    47.79
1988.15    1.047    47.63
1989.15    1.058    47.48
1990.15    1.069    47.33
1991.15    1.080    47.18
1992.15    1.090    47.04
1993.15    1.101    46.90
1994.15    1.111    46.76
1995.15    1.122    46.63
1996.15    1.132    46.49
1997.15    1.143    46.36
1998.15    1.153    46.23
1999.15    1.163    46.11
2000.15    1.174    45.98
2001.15    1.184    45.86
2002.15    1.194    45.74
2003.15    1.204    45.62
2004.15    1.214    45.51
2005.15    1.224    45.40
2006.15    1.233    45.28
2007.15    1.243    45.17
2008.15    1.253    45.06
2009.15    1.262    44.96
2010.15    1.272    44.85
2011.15    1.281    44.75
2012.15    1.291    44.65
2013.15    1.300    44.54
2014.15    1.309    44.45
2015.15    1.319    44.35
2016.15    1.328    44.25
2017.15    1.337    44.16
2018.15    1.346    44.06
2019.15    1.355    43.97
2020.15    1.363    43.88
2021.15    1.372    43.79
2022.15    1.381    43.70
2023.15    1.389    43.61
2024.15    1.398    43.52
2025.15    1.406    43.44
2026.15    1.415    43.35
2027.15    1.423    43.27
2028.15    1.431    43.18
2029.15    1.439    43.10
2030.15    1.447    43.02
2031.15    1.455    42.94
2032.15    1.463    42.86
2033.15    1.471    42.78
2034.15    1.478    42.70
2035.15    1.486    42.63
2036.15    1.493    42.55
2037.15    1.501    42.48
2038.15    1.508    42.40
2039.15    1.515    42.33
2040.15    1.523    42.25
2041.15    1.530    42.18
2042.15    1.537    42.11
2043.15    1.544    42.04
2044.15    1.550    41.97
2045.15    1.557    41.90
2046.15    1.564    41.83
2047.15    1.570    41.76
2048.15    1.577    41.69
2049.15    1.583    41.62
2050.15    1.589    41.55
2051.15    1.595    41.49
2052.15    1.601    41.42
2053.15    1.607    41.36
2054.15    1.613    41.29
2055.15    1.619    41.23
2056.15    1.624    41.16
2057.15    1.630    41.10
2058.15    1.635    41.03
2059.15    1.641    40.97
2060.15    1.646    40.91
2061.15    1.651    40.85
2062.15    1.656    40.78
2063.15    1.661    40.72
2064.15    1.666    40.66
2065.15    1.671    40.60
2066.15    1.675    40.54
2067.15    1.680    40.48
2068.15    1.684    40.42
2069.15    1.689    40.36
2070.15    1.693    40.30
2071.15    1.697    40.24
2072.15    1.701    40.18
2073.15    1.705    40.13
2074.15    1.708    40.07
2075.15    1.712    40.01
2076.15    1.716    39.95
2077.15    1.719    39.90
2078.15    1.722    39.84
2079.15    1.726    39.78
2080.15    1.729    39.72
2081.15    1.732    39.67
2082.15    1.734    39.61
2083.15    1.737    39.56
2084.15    1.740    39.50
2085.15    1.742    39.44
2086.15    1.745    39.39
2087.15    1.747    39.33
2088.15    1.749    39.28
2089.15    1.751    39.22
2090.15    1.753    39.17
2091.15    1.755    39.11
2092.15    1.756    39.06
2093.15    1.758    39.00
2094.15    1.759    38.95
2095.15    1.761    38.89
2096.15    1.762    38.84
2097.15    1.763    38.78
2098.15    1.764    38.73
2099.15    1.765    38.67
2100.15    1.765    38.62
2101.15    1.766    38.57
2102.15    1.766    38.51
2103.15    1.767    38.46
2104.15    1.767    38.40
2105.15    1.767    38.35
2106.15    1.767    38.30
2107.15    1.766    38.24
2108.15    1.766    38.19
2109.15    1.766    38.13
2110.15    1.765    38.08
2111.15    1.764    38.02
2112.15    1.763    37.97
2113.15    1.762    37.92
2114.15    1.761    37.86
2115.15    1.760    37.81
2116.15    1.758    37.75
2117.15    1.757    37.70
2118.15    1.755    37.64
2119.15    1.753    37.59
2120.15    1.751    37.53
2121.15    1.749    37.48
2122.15    1.747    37.42
2123.15    1.745    37.37
2124.15    1.742    37.31
2125.15    1.739    37.25
2126.15    1.736    37.20
2127.15    1.734    37.14
2128.15    1.730    37.09
2129.15    1.727    37.03
2130.15    1.724    36.97
2131.15    1.720    36.92
2132.15    1.717    36.86
2133.15    1.713    36.80
2134.15    1.709    36.74
2135.15    1.705    36.68
2136.15    1.700    36.63
2137.15    1.696    36.57
2138.15    1.691    36.51
2139.15    1.687    36.45
2140.15    1.682    36.39
2141.15    1.677    36.33
2142.15    1.672    36.27
2143.15    1.666    36.21
2144.15    1.661    36.15
2145.15    1.655    36.09
2146.15    1.650    36.02
2147.15    1.644    35.96
2148.15    1.638    35.90
2149.15    1.632    35.84
2150.15    1.625    35.77
2151.15    1.619    35.71
2152.15    1.612    35.64
2153.15    1.605    35.58
2154.15    1.598    35.51
2155.15    1.591    35.44
2156.15    1.584    35.38
2157.15    1.576    35.31
2158.15    1.569    35.24
2159.15    1.561    35.17
2160.15    1.553    35.10
2161.15    1.545    35.03
2162.15    1.537    34.96
2163.15    1.529    34.89
2164.15    1.520    34.82
2165.15    1.511    34.74
2166.15    1.503    34.67
2167.15    1.494    34.59
2168.15    1.484    34.52
2169.15    1.475    34.44
2170.15    1.466    34.36
2171.15    1.456    34.28
2172.15    1.446    34.20
2173.15    1.436    34.12
2174.15    1.426    34.04
2175.15    1.416    33.95
2176.15    1.406    33.87
2177.15    1.395    33.78
2178.15    1.385    33.69
2179.15    1.374    33.61
2180.15    1.363    33.51
2181.15    1.352    33.42
2182.15    1.340    33.33
2183.15    1.329    33.23
2184.15    1.317    33.14
2185.15    1.305    33.04
2186.15    1.293    32.94
2187.15    1.281    32.84
2188.15    1.269    32.73
2189.15    1.257    32.63
2190.15    1.244    32.52
2191.15    1.231    32.41
2192.15    1.219    32.30
2193.15    1.206    32.18
2194.15    1.192    32.06
2195.15    1.179    31.94
2196.15    1.166    31.82
2197.15    1.152    31.69
2198.15    1.138    31.56
2199.15    1.125    31.43
2200.15    1.111    31.30
2201.15    1.096    31.16
2202.15    1.082    31.02
2203.15    1.068    30.87
2204.15    1.053    30.72
2205.15    1.038    30.56
2206.15    1.023    30.40
2207.15    1.008    30.24
2208.15    0.993    30.07
2209.15    0.978    29.90
2210.15    0.963    29.72
2211.15    0.947    29.53
2212.15    0.931    29.34
2213.15    0.916    29.14
2214.15    0.900    28.94
2215.15    0.884    28.72
2216.15    0.867    28.50
2217.15    0.851    28.27
2218.15    0.835    28.04
2219.15    0.818    27.79
2220.15    0.802    27.53
2221.15    0.785    27.26
2222.15    0.768    26.98
2223.15    0.751    26.69
2224.15    0.734    26.38
2225.15    0.717    26.06
2226.15    0.700    25.72
2227.15    0.683    25.37
2228.15    0.665    25.00
2229.15    0.648    24.60
2230.15    0.630    24.19
2231.15    0.612    23.75
2232.15    0.595    23.29
2233.15    0.577    22.79
2234.15    0.559    22.27
2235.15    0.541    21.71
2236.15    0.523    21.11
2237.15    0.506    20.47
2238.15    0.488    19.79
2239.15    0.470    19.05
2240.15    0.452    18.25
2241.15    0.434    17.39
2242.15    0.416    16.45
2243.15    0.398    15.43
2244.15    0.380    14.31
2245.15    0.363    13.08
2246.15    0.345    11.73
2247.15    0.327    10.23
2248.15    0.310     8.57
2249.15    0.293     6.71
2250.15    0.276     4.62
2251.15    0.260     2.26
2252.15    0.244   359.60
2253.15    0.229   356.57
2254.15    0.214   353.11
2255.15    0.200   349.16
2256.15    0.187   344.65
2257.15    0.176   339.52
2258.15    0.166   333.72
2259.15    0.158   327.26
2260.15    0.152   320.20
2261.15    0.149   312.70
2262.15    0.148   304.98
2263.15    0.150   297.31
2264.15    0.154   289.95
2265.15    0.161   283.11
2266.15    0.170   276.89
2267.15    0.180   271.34
2268.15    0.192   266.45
2269.15    0.205   262.16
2270.15    0.219   258.40
2271.15    0.234   255.11
2272.15    0.250   252.22
2273.15    0.266   249.68
2274.15    0.283   247.43
2275.15    0.299   245.43
2276.15    0.316   243.64
2277.15    0.334   242.04
2278.15    0.351   240.60
2279.15    0.369   239.29
2280.15    0.386   238.11
2281.15    0.404   237.02
2282.15    0.422   236.03
2283.15    0.440   235.12
2284.15    0.458   234.28
2285.15    0.475   233.50
2286.15    0.493   232.78
2287.15    0.511   232.11
2288.15    0.529   231.48
2289.15    0.546   230.90
2290.15    0.564   230.35
2291.15    0.581   229.83
2292.15    0.599   229.34
2293.15    0.616   228.89
2294.15    0.633   228.45
2295.15    0.650   228.04
2296.15    0.667   227.65
2297.15    0.684   227.28
2298.15    0.701   226.93
2299.15    0.718   226.59
2300.15    0.734   226.27
2301.15    0.751   225.96
2302.15    0.767   225.67
2303.15    0.783   225.39
2304.15    0.799   225.12
2305.15    0.814   224.86
2306.15    0.830   224.61
2307.15    0.845   224.37
2308.15    0.861   224.13
2309.15    0.876   223.91
2310.15    0.891   223.69
2311.15    0.905   223.48
2312.15    0.920   223.28
2313.15    0.934   223.08
2314.15    0.948   222.89
2315.15    0.962   222.71
2316.15    0.976   222.53
2317.15    0.990   222.35
2318.15    1.003   222.18
2319.15    1.016   222.02
2320.15    1.029   221.85
2321.15    1.042   221.70
2322.15    1.054   221.54
2323.15    1.066   221.39
2324.15    1.078   221.24
2325.15    1.090   221.10
2326.15    1.102   220.96
2327.15    1.113   220.82
2328.15    1.125   220.69
2329.15    1.135   220.55
2330.15    1.146   220.42
2331.15    1.157   220.30






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 15:37:58



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