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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:16

Orbital Elements for STF1969

WDS:	STF1969	WDS ID/Discoverer
P:	278.719	Orbital period (years)
a:	0.82407	Semi-major axis (arcseconds)
i:	73.362	Inclination (degrees)
Ω:	30.541	Longitude of ascending node (degrees)
T:	1960.346	Epoch of periastron passage (year)
e:	0.75023	Eccentricity
ω:	205.297	Longitude of periastron (degrees)
Start-Year:	1886.0	Year
End-Year:	2164.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1969

Position:	154116.41+595917.2	Epoch-2000 right ascension and declination
WDS-ID:	15413+5959	WDS designation
Discoverer Code:	STF1969	Discover designation and components
ADS number:	9756	Aitken Double Star catalog
HD number:	140590	HD catalog number
Hipparcos number:	76837	Hipparcos catalog number
V1:	9.14	Magnitude of the primary
V2:	9.50	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for STF1969

WDS 6th Orbit including measures of STF1969

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

Ephemeris of STF1969

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.138     30.8
-------------------------
1886.0     0.886     46.8
1887.0     0.876     47.0
1888.0     0.865     47.3
1889.0     0.854     47.5
1890.0     0.843     47.7
1891.0     0.832     48.0
1892.0     0.820     48.2
1893.0     0.809     48.5
1894.0     0.797     48.7
1895.0     0.786     49.0
1896.0     0.774     49.3
1897.0     0.762     49.5
1898.0     0.750     49.8
1899.0     0.738     50.1
1900.0     0.725     50.4
1901.0     0.713     50.8
1902.0     0.700     51.1
1903.0     0.688     51.4
1904.0     0.675     51.8
1905.0     0.662     52.2
1906.0     0.649     52.5
1907.0     0.635     53.0
1908.0     0.622     53.4
1909.0     0.608     53.8
1910.0     0.595     54.3
1911.0     0.581     54.7
1912.0     0.567     55.3
1913.0     0.553     55.8
1914.0     0.539     56.3
1915.0     0.524     56.9
1916.0     0.510     57.5
1917.0     0.495     58.2
1918.0     0.481     58.9
1919.0     0.466     59.6
1920.0     0.451     60.4
1921.0     0.436     61.3
1922.0     0.421     62.2
1923.0     0.406     63.2
1924.0     0.391     64.2
1925.0     0.375     65.3
1926.0     0.360     66.6
1927.0     0.345     67.9
1928.0     0.329     69.4
1929.0     0.314     71.0
1930.0     0.299     72.7
1931.0     0.284     74.7
1932.0     0.269     76.9
1933.0     0.254     79.3
1934.0     0.239     82.0
1935.0     0.225     85.1
1936.0     0.212     88.6
1937.0     0.199     92.5
1938.0     0.187     97.0
1939.0     0.176    102.1
1940.0     0.166    107.8
1941.0     0.158    114.2
1942.0     0.151    121.1
1943.0     0.147    128.6
1944.0     0.145    136.4
1945.0     0.146    144.3
1946.0     0.149    151.9
1947.0     0.153    159.2
1948.0     0.160    166.0
1949.0     0.168    172.2
1950.0     0.177    177.7
1951.0     0.187    182.8
1952.0     0.196    187.3
1953.0     0.205    191.4
1954.0     0.213    195.2
1955.0     0.219    198.8
1956.0     0.222    202.2
1957.0     0.222    205.6
1958.0     0.218    209.0
1959.0     0.209    212.6
1960.0     0.194    216.7
1961.0     0.174    221.6
1962.0     0.151    227.9
1963.0     0.125    236.7
1964.0     0.100    250.0
1965.0     0.082    270.4
1966.0     0.078    297.3
1967.0     0.089    322.1
1968.0     0.111    339.2
1969.0     0.138    350.1
1970.0     0.168    357.2
1971.0     0.199      2.2
1972.0     0.229      5.8
1973.0     0.259      8.6
1974.0     0.289     10.8
1975.0     0.318     12.6
1976.0     0.346     14.1
1977.0     0.374     15.4
1978.0     0.401     16.5
1979.0     0.427     17.5
1980.0     0.452     18.4
1981.0     0.477     19.1
1982.0     0.501     19.8
1983.0     0.525     20.5
1984.0     0.548     21.0
1985.0     0.570     21.6
1986.0     0.592     22.1
1987.0     0.613     22.5
1988.0     0.634     23.0
1989.0     0.654     23.4
1990.0     0.673     23.7
1991.0     0.693     24.1
1992.0     0.711     24.4
1993.0     0.730     24.7
1994.0     0.748     25.1
1995.0     0.765     25.3
1996.0     0.782     25.6
1997.0     0.799     25.9
1998.0     0.815     26.1
1999.0     0.831     26.4
2000.0     0.846     26.6
2001.0     0.862     26.8
2002.0     0.876     27.1
2003.0     0.891     27.3
2004.0     0.905     27.5
2005.0     0.919     27.7
2006.0     0.932     27.9
2007.0     0.946     28.1
2008.0     0.959     28.3
2009.0     0.971     28.4
2010.0     0.984     28.6
2011.0     0.996     28.8
2012.0     1.007     28.9
2013.0     1.019     29.1
2014.0     1.030     29.3
2015.0     1.041     29.4
2016.0     1.052     29.6
2017.0     1.062     29.7
2018.0     1.073     29.9
2019.0     1.083     30.0
2020.0     1.092     30.1
2021.0     1.102     30.3
2022.0     1.111     30.4
2023.0     1.120     30.6
2024.0     1.129     30.7
2025.0     1.138     30.8
2026.0     1.146     30.9
2027.0     1.155     31.1
2028.0     1.163     31.2
2029.0     1.171     31.3
2030.0     1.178     31.4
2031.0     1.186     31.5
2032.0     1.193     31.7
2033.0     1.200     31.8
2034.0     1.207     31.9
2035.0     1.213     32.0
2036.0     1.220     32.1
2037.0     1.226     32.2
2038.0     1.232     32.3
2039.0     1.238     32.5
2040.0     1.244     32.6
2041.0     1.249     32.7
2042.0     1.255     32.8
2043.0     1.260     32.9
2044.0     1.265     33.0
2045.0     1.270     33.1
2046.0     1.275     33.2
2047.0     1.279     33.3
2048.0     1.284     33.4
2049.0     1.288     33.5
2050.0     1.292     33.6
2051.0     1.296     33.7
2052.0     1.300     33.8
2053.0     1.303     33.9
2054.0     1.307     34.0
2055.0     1.310     34.1
2056.0     1.313     34.2
2057.0     1.316     34.3
2058.0     1.319     34.4
2059.0     1.322     34.5
2060.0     1.324     34.6
2061.0     1.327     34.7
2062.0     1.329     34.7
2063.0     1.331     34.8
2064.0     1.333     34.9
2065.0     1.335     35.0
2066.0     1.336     35.1
2067.0     1.338     35.2
2068.0     1.339     35.3
2069.0     1.341     35.4
2070.0     1.342     35.5
2071.0     1.343     35.6
2072.0     1.344     35.7
2073.0     1.344     35.8
2074.0     1.345     35.9
2075.0     1.345     36.0
2076.0     1.346     36.0
2077.0     1.346     36.1
2078.0     1.346     36.2
2079.0     1.346     36.3
2080.0     1.346     36.4
2081.0     1.345     36.5
2082.0     1.345     36.6
2083.0     1.344     36.7
2084.0     1.344     36.8
2085.0     1.343     36.9
2086.0     1.342     37.0
2087.0     1.341     37.1
2088.0     1.339     37.1
2089.0     1.338     37.2
2090.0     1.337     37.3
2091.0     1.335     37.4
2092.0     1.333     37.5
2093.0     1.331     37.6
2094.0     1.329     37.7
2095.0     1.327     37.8
2096.0     1.325     37.9
2097.0     1.323     38.0
2098.0     1.320     38.1
2099.0     1.318     38.2
2100.0     1.315     38.3
2101.0     1.312     38.4
2102.0     1.309     38.5
2103.0     1.306     38.6
2104.0     1.303     38.7
2105.0     1.300     38.8
2106.0     1.296     38.9
2107.0     1.293     39.0
2108.0     1.289     39.1
2109.0     1.285     39.2
2110.0     1.281     39.3
2111.0     1.277     39.4
2112.0     1.273     39.5
2113.0     1.269     39.6
2114.0     1.265     39.7
2115.0     1.260     39.8
2116.0     1.256     39.9
2117.0     1.251     40.0
2118.0     1.246     40.1
2119.0     1.241     40.2
2120.0     1.236     40.3
2121.0     1.231     40.4
2122.0     1.225     40.5
2123.0     1.220     40.6
2124.0     1.214     40.7
2125.0     1.209     40.9
2126.0     1.203     41.0
2127.0     1.197     41.1
2128.0     1.191     41.2
2129.0     1.185     41.3
2130.0     1.179     41.4
2131.0     1.172     41.6
2132.0     1.166     41.7
2133.0     1.159     41.8
2134.0     1.152     41.9
2135.0     1.145     42.1
2136.0     1.138     42.2
2137.0     1.131     42.3
2138.0     1.124     42.4
2139.0     1.117     42.6
2140.0     1.109     42.7
2141.0     1.102     42.8
2142.0     1.094     43.0
2143.0     1.086     43.1
2144.0     1.078     43.3
2145.0     1.070     43.4
2146.0     1.062     43.6
2147.0     1.054     43.7
2148.0     1.045     43.9
2149.0     1.037     44.0
2150.0     1.028     44.2
2151.0     1.019     44.3
2152.0     1.010     44.5
2153.0     1.001     44.6
2154.0     0.992     44.8
2155.0     0.983     45.0
2156.0     0.974     45.2
2157.0     0.964     45.3
2158.0     0.954     45.5
2159.0     0.945     45.7
2160.0     0.935     45.9
2161.0     0.925     46.1
2162.0     0.914     46.3
2163.0     0.904     46.5

Disclaimer

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.