Double Star Calculator - Orbit

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:	1885.6404	Year
End-Year:	2164.3596	Year
Epoch:	2026.5	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 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Izm2019	Reference

Double Star Orbit for STF1969

WDS 6th Orbit including measures of STF1969

-- 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 STF1969

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.151    31.00
--------------------------
1885.64    0.890    46.76
1886.64    0.879    46.97
1887.64    0.869    47.19
1888.64    0.858    47.41
1889.64    0.847    47.64
1890.64    0.836    47.88
1891.64    0.825    48.12
1892.64    0.813    48.36
1893.64    0.802    48.62
1894.64    0.790    48.88
1895.64    0.778    49.15
1896.64    0.766    49.43
1897.64    0.754    49.72
1898.64    0.742    50.01
1899.64    0.730    50.32
1900.64    0.717    50.64
1901.64    0.705    50.97
1902.64    0.692    51.31
1903.64    0.679    51.66
1904.64    0.666    52.03
1905.64    0.653    52.41
1906.64    0.640    52.80
1907.64    0.627    53.22
1908.64    0.613    53.65
1909.64    0.600    54.10
1910.64    0.586    54.57
1911.64    0.572    55.07
1912.64    0.558    55.59
1913.64    0.544    56.14
1914.64    0.530    56.71
1915.64    0.515    57.32
1916.64    0.501    57.97
1917.64    0.486    58.65
1918.64    0.471    59.37
1919.64    0.456    60.14
1920.64    0.442    60.97
1921.64    0.427    61.85
1922.64    0.411    62.80
1923.64    0.396    63.81
1924.64    0.381    64.91
1925.64    0.366    66.11
1926.64    0.350    67.40
1927.64    0.335    68.82
1928.64    0.320    70.37
1929.64    0.304    72.08
1930.64    0.289    73.96
1931.64    0.274    76.06
1932.64    0.259    78.40
1933.64    0.245    81.02
1934.64    0.230    83.96
1935.64    0.217    87.29
1936.64    0.203    91.07
1937.64    0.191    95.35
1938.64    0.179   100.20
1939.64    0.169   105.68
1940.64    0.160   111.80
1941.64    0.153   118.57
1942.64    0.148   125.88
1943.64    0.146   133.57
1944.64    0.145   141.43
1945.64    0.147   149.20
1946.64    0.152   156.66
1947.64    0.158   163.63
1948.64    0.165   170.02
1949.64    0.174   175.81
1950.64    0.183   181.02
1951.64    0.193   185.73
1952.64    0.202   190.00
1953.64    0.210   193.91
1954.64    0.217   197.54
1955.64    0.221   200.99
1956.64    0.223   204.35
1957.64    0.220   207.72
1958.64    0.213   211.25
1959.64    0.200   215.14
1960.64    0.182   219.68
1961.64    0.159   225.38
1962.64    0.134   233.13
1963.64    0.109   244.53
1964.64    0.088   262.12
1965.64    0.077   287.29
1966.64    0.083   314.00
1967.64    0.102   333.94
1968.64    0.128   346.71
1969.64    0.157   354.96
1970.64    0.188     0.58
1971.64    0.218     4.63
1972.64    0.249     7.69
1973.64    0.278    10.09
1974.64    0.308    12.03
1975.64    0.336    13.64
1976.64    0.364    14.99
1977.64    0.391    16.16
1978.64    0.417    17.18
1979.64    0.443    18.07
1980.64    0.468    18.88
1981.64    0.493    19.60
1982.64    0.516    20.25
1983.64    0.539    20.84
1984.64    0.562    21.39
1985.64    0.584    21.90
1986.64    0.605    22.37
1987.64    0.626    22.81
1988.64    0.647    23.22
1989.64    0.666    23.60
1990.64    0.686    23.96
1991.64    0.705    24.31
1992.64    0.723    24.63
1993.64    0.741    24.94
1994.64    0.759    25.24
1995.64    0.776    25.52
1996.64    0.793    25.79
1997.64    0.809    26.05
1998.64    0.825    26.30
1999.64    0.841    26.54
2000.64    0.856    26.77
2001.64    0.871    26.99
2002.64    0.886    27.21
2003.64    0.900    27.41
2004.64    0.914    27.62
2005.64    0.928    27.81
2006.64    0.941    28.00
2007.64    0.954    28.19
2008.64    0.967    28.37
2009.64    0.979    28.54
2010.64    0.991    28.71
2011.64    1.003    28.88
2012.64    1.015    29.04
2013.64    1.026    29.20
2014.64    1.037    29.36
2015.64    1.048    29.51
2016.64    1.059    29.66
2017.64    1.069    29.81
2018.64    1.079    29.95
2019.64    1.089    30.09
2020.64    1.099    30.23
2021.64    1.108    30.37
2022.64    1.117    30.50
2023.64    1.126    30.64
2024.64    1.135    30.77
2025.64    1.143    30.89
2026.64    1.152    31.02
2027.64    1.160    31.14
2028.64    1.168    31.27
2029.64    1.175    31.39
2030.64    1.183    31.51
2031.64    1.190    31.62
2032.64    1.197    31.74
2033.64    1.204    31.86
2034.64    1.211    31.97
2035.64    1.218    32.08
2036.64    1.224    32.19
2037.64    1.230    32.30
2038.64    1.236    32.41
2039.64    1.242    32.52
2040.64    1.248    32.63
2041.64    1.253    32.74
2042.64    1.258    32.84
2043.64    1.263    32.95
2044.64    1.268    33.05
2045.64    1.273    33.15
2046.64    1.278    33.25
2047.64    1.282    33.36
2048.64    1.286    33.46
2049.64    1.291    33.56
2050.64    1.295    33.66
2051.64    1.298    33.75
2052.64    1.302    33.85
2053.64    1.306    33.95
2054.64    1.309    34.05
2055.64    1.312    34.14
2056.64    1.315    34.24
2057.64    1.318    34.34
2058.64    1.321    34.43
2059.64    1.323    34.53
2060.64    1.326    34.62
2061.64    1.328    34.72
2062.64    1.330    34.81
2063.64    1.332    34.90
2064.64    1.334    35.00
2065.64    1.336    35.09
2066.64    1.337    35.18
2067.64    1.339    35.27
2068.64    1.340    35.37
2069.64    1.341    35.46
2070.64    1.342    35.55
2071.64    1.343    35.64
2072.64    1.344    35.74
2073.64    1.345    35.83
2074.64    1.345    35.92
2075.64    1.346    36.01
2076.64    1.346    36.10
2077.64    1.346    36.19
2078.64    1.346    36.29
2079.64    1.346    36.38
2080.64    1.345    36.47
2081.64    1.345    36.56
2082.64    1.345    36.65
2083.64    1.344    36.75
2084.64    1.343    36.84
2085.64    1.342    36.93
2086.64    1.341    37.02
2087.64    1.340    37.11
2088.64    1.339    37.21
2089.64    1.337    37.30
2090.64    1.336    37.39
2091.64    1.334    37.49
2092.64    1.332    37.58
2093.64    1.330    37.67
2094.64    1.328    37.77
2095.64    1.326    37.86
2096.64    1.324    37.96
2097.64    1.321    38.05
2098.64    1.319    38.15
2099.64    1.316    38.24
2100.64    1.313    38.34
2101.64    1.310    38.43
2102.64    1.307    38.53
2103.64    1.304    38.63
2104.64    1.301    38.73
2105.64    1.298    38.82
2106.64    1.294    38.92
2107.64    1.290    39.02
2108.64    1.287    39.12
2109.64    1.283    39.22
2110.64    1.279    39.32
2111.64    1.275    39.43
2112.64    1.271    39.53
2113.64    1.266    39.63
2114.64    1.262    39.74
2115.64    1.257    39.84
2116.64    1.253    39.95
2117.64    1.248    40.05
2118.64    1.243    40.16
2119.64    1.238    40.27
2120.64    1.233    40.38
2121.64    1.227    40.49
2122.64    1.222    40.60
2123.64    1.216    40.71
2124.64    1.211    40.82
2125.64    1.205    40.94
2126.64    1.199    41.05
2127.64    1.193    41.17
2128.64    1.187    41.28
2129.64    1.181    41.40
2130.64    1.174    41.52
2131.64    1.168    41.64
2132.64    1.161    41.77
2133.64    1.155    41.89
2134.64    1.148    42.01
2135.64    1.141    42.14
2136.64    1.134    42.27
2137.64    1.127    42.40
2138.64    1.119    42.53
2139.64    1.112    42.66
2140.64    1.105    42.80
2141.64    1.097    42.94
2142.64    1.089    43.08
2143.64    1.081    43.22
2144.64    1.073    43.36
2145.64    1.065    43.51
2146.64    1.057    43.65
2147.64    1.048    43.80
2148.64    1.040    43.95
2149.64    1.031    44.11
2150.64    1.023    44.27
2151.64    1.014    44.43
2152.64    1.005    44.59
2153.64    0.996    44.76
2154.64    0.986    44.93
2155.64    0.977    45.10
2156.64    0.967    45.27
2157.64    0.958    45.45
2158.64    0.948    45.64
2159.64    0.938    45.82
2160.64    0.928    46.01
2161.64    0.918    46.21
2162.64    0.908    46.41
2163.64    0.898    46.61

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 17:18:31