Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:22:05

Orbital Elements for STT18AB
WDS: STT18AB WDS ID/Discoverer
P: 386.510 Orbital period (years)
a: 3.296 Semi-major axis (arcseconds)
i: 75.3 Inclination (degrees)
Ω: 76.5 Longitude of ascending node (degrees)
T: 1828.130 Epoch of periastron passage (year)
e: 0.834 Eccentricity
ω: 284.3 Longitude of periastron (degrees)
Start-Year: 1832.0 Year
End-Year: 2218.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT18AB
Position: 004223.21+041000.0 Epoch-2000 right ascension and declination
WDS-ID: 00424+0410 WDS designation
Discoverer Code: STT18AB Discover designation and components
ADS number: 588 Aitken Double Star catalog
HD number: 3972 HD catalog number
Hipparcos number: 3326 Hipparcos catalog number
V1: 7.86 Magnitude of the primary
V2: 9.71 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1999 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT18AB



WDS 6th Orbit including measures of STT18AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of STT18AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     2.144    212.8
-------------------------
1832.0     0.685     72.5
1833.0     0.779     75.1
1834.0     0.859     77.2
1835.0     0.928     79.0
1836.0     0.987     80.5
1837.0     1.037     81.9
1838.0     1.081     83.2
1839.0     1.119     84.3
1840.0     1.152     85.4
1841.0     1.181     86.5
1842.0     1.207     87.5
1843.0     1.229     88.4
1844.0     1.249     89.4
1845.0     1.266     90.2
1846.0     1.281     91.1
1847.0     1.295     92.0
1848.0     1.306     92.8
1849.0     1.316     93.6
1850.0     1.325     94.4
1851.0     1.333     95.3
1852.0     1.339     96.0
1853.0     1.345     96.8
1854.0     1.349     97.6
1855.0     1.353     98.4
1856.0     1.356     99.2
1857.0     1.359     99.9
1858.0     1.361    100.7
1859.0     1.362    101.5
1860.0     1.363    102.2
1861.0     1.363    103.0
1862.0     1.363    103.7
1863.0     1.362    104.5
1864.0     1.361    105.3
1865.0     1.360    106.0
1866.0     1.358    106.8
1867.0     1.357    107.6
1868.0     1.355    108.3
1869.0     1.353    109.1
1870.0     1.350    109.9
1871.0     1.348    110.7
1872.0     1.345    111.5
1873.0     1.342    112.2
1874.0     1.339    113.0
1875.0     1.336    113.8
1876.0     1.333    114.6
1877.0     1.330    115.4
1878.0     1.327    116.2
1879.0     1.323    117.0
1880.0     1.320    117.8
1881.0     1.317    118.7
1882.0     1.314    119.5
1883.0     1.310    120.3
1884.0     1.307    121.1
1885.0     1.304    122.0
1886.0     1.301    122.8
1887.0     1.298    123.6
1888.0     1.295    124.5
1889.0     1.292    125.3
1890.0     1.289    126.2
1891.0     1.286    127.0
1892.0     1.283    127.9
1893.0     1.281    128.7
1894.0     1.278    129.6
1895.0     1.276    130.5
1896.0     1.274    131.3
1897.0     1.272    132.2
1898.0     1.270    133.1
1899.0     1.268    134.0
1900.0     1.266    134.9
1901.0     1.265    135.7
1902.0     1.263    136.6
1903.0     1.262    137.5
1904.0     1.261    138.4
1905.0     1.260    139.3
1906.0     1.260    140.2
1907.0     1.259    141.1
1908.0     1.259    142.0
1909.0     1.258    142.9
1910.0     1.258    143.8
1911.0     1.259    144.7
1912.0     1.259    145.6
1913.0     1.260    146.5
1914.0     1.260    147.3
1915.0     1.261    148.2
1916.0     1.262    149.1
1917.0     1.264    150.0
1918.0     1.265    150.9
1919.0     1.267    151.8
1920.0     1.269    152.7
1921.0     1.271    153.5
1922.0     1.273    154.4
1923.0     1.276    155.3
1924.0     1.279    156.2
1925.0     1.281    157.0
1926.0     1.284    157.9
1927.0     1.288    158.7
1928.0     1.291    159.6
1929.0     1.295    160.4
1930.0     1.299    161.3
1931.0     1.303    162.1
1932.0     1.307    163.0
1933.0     1.311    163.8
1934.0     1.316    164.6
1935.0     1.321    165.4
1936.0     1.326    166.2
1937.0     1.331    167.0
1938.0     1.336    167.8
1939.0     1.341    168.6
1940.0     1.347    169.4
1941.0     1.353    170.2
1942.0     1.359    171.0
1943.0     1.365    171.7
1944.0     1.371    172.5
1945.0     1.378    173.2
1946.0     1.384    174.0
1947.0     1.391    174.7
1948.0     1.398    175.4
1949.0     1.405    176.2
1950.0     1.412    176.9
1951.0     1.419    177.6
1952.0     1.426    178.3
1953.0     1.434    179.0
1954.0     1.442    179.7
1955.0     1.449    180.3
1956.0     1.457    181.0
1957.0     1.465    181.7
1958.0     1.474    182.3
1959.0     1.482    183.0
1960.0     1.490    183.6
1961.0     1.499    184.2
1962.0     1.507    184.9
1963.0     1.516    185.5
1964.0     1.525    186.1
1965.0     1.533    186.7
1966.0     1.542    187.3
1967.0     1.551    187.9
1968.0     1.561    188.5
1969.0     1.570    189.1
1970.0     1.579    189.6
1971.0     1.588    190.2
1972.0     1.598    190.8
1973.0     1.607    191.3
1974.0     1.617    191.9
1975.0     1.627    192.4
1976.0     1.636    192.9
1977.0     1.646    193.5
1978.0     1.656    194.0
1979.0     1.666    194.5
1980.0     1.676    195.0
1981.0     1.686    195.5
1982.0     1.696    196.0
1983.0     1.706    196.5
1984.0     1.716    197.0
1985.0     1.726    197.4
1986.0     1.736    197.9
1987.0     1.746    198.4
1988.0     1.757    198.8
1989.0     1.767    199.3
1990.0     1.777    199.8
1991.0     1.788    200.2
1992.0     1.798    200.6
1993.0     1.809    201.1
1994.0     1.819    201.5
1995.0     1.830    201.9
1996.0     1.840    202.4
1997.0     1.850    202.8
1998.0     1.861    203.2
1999.0     1.872    203.6
2000.0     1.882    204.0
2001.0     1.893    204.4
2002.0     1.903    204.8
2003.0     1.914    205.2
2004.0     1.924    205.6
2005.0     1.935    205.9
2006.0     1.945    206.3
2007.0     1.956    206.7
2008.0     1.967    207.1
2009.0     1.977    207.4
2010.0     1.988    207.8
2011.0     1.998    208.1
2012.0     2.009    208.5
2013.0     2.019    208.8
2014.0     2.030    209.2
2015.0     2.040    209.5
2016.0     2.051    209.9
2017.0     2.061    210.2
2018.0     2.072    210.5
2019.0     2.082    210.9
2020.0     2.092    211.2
2021.0     2.103    211.5
2022.0     2.113    211.8
2023.0     2.124    212.1
2024.0     2.134    212.5
2025.0     2.144    212.8
2026.0     2.154    213.1
2027.0     2.165    213.4
2028.0     2.175    213.7
2029.0     2.185    214.0
2030.0     2.195    214.3
2031.0     2.205    214.6
2032.0     2.215    214.8
2033.0     2.225    215.1
2034.0     2.235    215.4
2035.0     2.245    215.7
2036.0     2.255    216.0
2037.0     2.265    216.3
2038.0     2.274    216.5
2039.0     2.284    216.8
2040.0     2.294    217.1
2041.0     2.303    217.3
2042.0     2.313    217.6
2043.0     2.323    217.9
2044.0     2.332    218.1
2045.0     2.342    218.4
2046.0     2.351    218.7
2047.0     2.360    218.9
2048.0     2.369    219.2
2049.0     2.379    219.4
2050.0     2.388    219.7
2051.0     2.397    219.9
2052.0     2.406    220.2
2053.0     2.415    220.4
2054.0     2.424    220.6
2055.0     2.432    220.9
2056.0     2.441    221.1
2057.0     2.450    221.4
2058.0     2.459    221.6
2059.0     2.467    221.8
2060.0     2.475    222.1
2061.0     2.484    222.3
2062.0     2.492    222.5
2063.0     2.500    222.7
2064.0     2.509    223.0
2065.0     2.517    223.2
2066.0     2.525    223.4
2067.0     2.533    223.6
2068.0     2.540    223.9
2069.0     2.548    224.1
2070.0     2.556    224.3
2071.0     2.563    224.5
2072.0     2.571    224.7
2073.0     2.578    224.9
2074.0     2.585    225.2
2075.0     2.593    225.4
2076.0     2.600    225.6
2077.0     2.607    225.8
2078.0     2.614    226.0
2079.0     2.620    226.2
2080.0     2.627    226.4
2081.0     2.634    226.6
2082.0     2.640    226.8
2083.0     2.647    227.0
2084.0     2.653    227.2
2085.0     2.659    227.4
2086.0     2.665    227.6
2087.0     2.671    227.8
2088.0     2.677    228.0
2089.0     2.683    228.2
2090.0     2.688    228.4
2091.0     2.694    228.6
2092.0     2.699    228.8
2093.0     2.704    229.0
2094.0     2.709    229.2
2095.0     2.714    229.4
2096.0     2.719    229.6
2097.0     2.724    229.8
2098.0     2.729    230.0
2099.0     2.733    230.1
2100.0     2.737    230.3
2101.0     2.742    230.5
2102.0     2.746    230.7
2103.0     2.750    230.9
2104.0     2.753    231.1
2105.0     2.757    231.3
2106.0     2.760    231.5
2107.0     2.764    231.6
2108.0     2.767    231.8
2109.0     2.770    232.0
2110.0     2.773    232.2
2111.0     2.775    232.4
2112.0     2.778    232.6
2113.0     2.780    232.8
2114.0     2.782    232.9
2115.0     2.784    233.1
2116.0     2.786    233.3
2117.0     2.788    233.5
2118.0     2.789    233.7
2119.0     2.790    233.8
2120.0     2.791    234.0
2121.0     2.792    234.2
2122.0     2.793    234.4
2123.0     2.794    234.6
2124.0     2.794    234.8
2125.0     2.794    234.9
2126.0     2.794    235.1
2127.0     2.793    235.3
2128.0     2.793    235.5
2129.0     2.792    235.7
2130.0     2.791    235.8
2131.0     2.790    236.0
2132.0     2.788    236.2
2133.0     2.787    236.4
2134.0     2.785    236.6
2135.0     2.783    236.8
2136.0     2.780    236.9
2137.0     2.777    237.1
2138.0     2.774    237.3
2139.0     2.771    237.5
2140.0     2.768    237.7
2141.0     2.764    237.9
2142.0     2.760    238.0
2143.0     2.755    238.2
2144.0     2.751    238.4
2145.0     2.746    238.6
2146.0     2.740    238.8
2147.0     2.735    239.0
2148.0     2.729    239.2
2149.0     2.722    239.4
2150.0     2.716    239.6
2151.0     2.709    239.8
2152.0     2.701    239.9
2153.0     2.694    240.1
2154.0     2.686    240.3
2155.0     2.677    240.5
2156.0     2.668    240.7
2157.0     2.659    240.9
2158.0     2.649    241.1
2159.0     2.639    241.3
2160.0     2.628    241.5
2161.0     2.617    241.7
2162.0     2.606    242.0
2163.0     2.594    242.2
2164.0     2.581    242.4
2165.0     2.568    242.6
2166.0     2.554    242.8
2167.0     2.540    243.0
2168.0     2.525    243.2
2169.0     2.510    243.5
2170.0     2.494    243.7
2171.0     2.477    243.9
2172.0     2.460    244.2
2173.0     2.442    244.4
2174.0     2.424    244.6
2175.0     2.404    244.9
2176.0     2.384    245.1
2177.0     2.363    245.4
2178.0     2.341    245.6
2179.0     2.318    245.9
2180.0     2.295    246.2
2181.0     2.270    246.4
2182.0     2.245    246.7
2183.0     2.218    247.0
2184.0     2.190    247.3
2185.0     2.161    247.6
2186.0     2.131    247.9
2187.0     2.100    248.2
2188.0     2.067    248.5
2189.0     2.033    248.9
2190.0     1.997    249.2
2191.0     1.959    249.6
2192.0     1.920    250.0
2193.0     1.879    250.3
2194.0     1.836    250.8
2195.0     1.790    251.2
2196.0     1.742    251.6
2197.0     1.692    252.1
2198.0     1.639    252.6
2199.0     1.583    253.2
2200.0     1.523    253.8
2201.0     1.460    254.4
2202.0     1.392    255.1
2203.0     1.320    255.9
2204.0     1.243    256.7
2205.0     1.160    257.7
2206.0     1.071    258.9
2207.0     0.974    260.2
2208.0     0.868    261.9
2209.0     0.753    264.0
2210.0     0.628    267.0
2211.0     0.492    271.6
2212.0     0.347    279.9
2213.0     0.208    299.8
2214.0     0.142    356.0
2215.0     0.236     43.0
2216.0     0.376     59.1
2217.0     0.511     66.4






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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