Double Star Calculator - Orbit

Orbital Elements for STF1819AB

WDS:	STF1819AB	WDS ID/Discoverer
P:	224.640	Orbital period (years)
a:	1.12468	Semi-major axis (arcseconds)
i:	147.579	Inclination (degrees)
Ω:	6.598	Longitude of ascending node (degrees)
T:	2008.061	Epoch of periastron passage (year)
e:	0.20512	Eccentricity
ω:	184.887	Longitude of periastron (degrees)
Start-Year:	1912.68	Year
End-Year:	2137.32	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1819AB
Position:	141519.38+030752.6	Epoch-2000 right ascension and declination
WDS-ID:	14153+0308	WDS designation
Discoverer Code:	STF1819AB	Discover designation and components
ADS number:	9182	Aitken Double Star catalog
HD number:	124757	HD catalog number
Hipparcos number:	69653	Hipparcos catalog number
V1:	7.73	Magnitude of the primary
V2:	7.92	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	2	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 STF1819AB

WDS 6th Orbit including measures of STF1819AB

-- 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 STF1819AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.859   142.30
--------------------------
1912.68    1.307   346.58
1913.68    1.302   345.60
1914.68    1.297   344.61
1915.68    1.292   343.61
1916.68    1.286   342.60
1917.68    1.280   341.58
1918.68    1.274   340.56
1919.68    1.268   339.52
1920.68    1.262   338.47
1921.68    1.255   337.41
1922.68    1.248   336.35
1923.68    1.241   335.27
1924.68    1.234   334.17
1925.68    1.227   333.07
1926.68    1.220   331.95
1927.68    1.212   330.82
1928.68    1.204   329.67
1929.68    1.197   328.51
1930.68    1.189   327.33
1931.68    1.180   326.13
1932.68    1.172   324.92
1933.68    1.164   323.70
1934.68    1.155   322.45
1935.68    1.147   321.19
1936.68    1.138   319.91
1937.68    1.130   318.60
1938.68    1.121   317.28
1939.68    1.112   315.94
1940.68    1.104   314.57
1941.68    1.095   313.19
1942.68    1.086   311.78
1943.68    1.077   310.35
1944.68    1.068   308.89
1945.68    1.060   307.41
1946.68    1.051   305.91
1947.68    1.042   304.38
1948.68    1.034   302.83
1949.68    1.025   301.25
1950.68    1.017   299.64
1951.68    1.009   298.01
1952.68    1.001   296.35
1953.68    0.993   294.67
1954.68    0.985   292.95
1955.68    0.978   291.21
1956.68    0.970   289.45
1957.68    0.963   287.65
1958.68    0.956   285.84
1959.68    0.949   283.99
1960.68    0.943   282.12
1961.68    0.937   280.22
1962.68    0.931   278.30
1963.68    0.925   276.35
1964.68    0.920   274.38
1965.68    0.915   272.39
1966.68    0.910   270.38
1967.68    0.905   268.35
1968.68    0.901   266.29
1969.68    0.898   264.22
1970.68    0.894   262.14
1971.68    0.891   260.03
1972.68    0.888   257.92
1973.68    0.886   255.79
1974.68    0.884   253.65
1975.68    0.882   251.50
1976.68    0.880   249.34
1977.68    0.879   247.18
1978.68    0.878   245.01
1979.68    0.878   242.84
1980.68    0.878   240.67
1981.68    0.877   238.49
1982.68    0.878   236.32
1983.68    0.878   234.14
1984.68    0.879   231.97
1985.68    0.879   229.80
1986.68    0.880   227.64
1987.68    0.881   225.48
1988.68    0.882   223.33
1989.68    0.883   221.18
1990.68    0.885   219.04
1991.68    0.886   216.90
1992.68    0.887   214.77
1993.68    0.888   212.64
1994.68    0.890   210.52
1995.68    0.891   208.41
1996.68    0.892   206.30
1997.68    0.893   204.20
1998.68    0.894   202.10
1999.68    0.894   200.00
2000.68    0.895   197.91
2001.68    0.895   195.82
2002.68    0.895   193.73
2003.68    0.895   191.64
2004.68    0.895   189.55
2005.68    0.895   187.46
2006.68    0.894   185.37
2007.68    0.893   183.27
2008.68    0.892   181.17
2009.68    0.891   179.06
2010.68    0.890   176.95
2011.68    0.888   174.83
2012.68    0.887   172.71
2013.68    0.885   170.57
2014.68    0.883   168.43
2015.68    0.881   166.28
2016.68    0.879   164.12
2017.68    0.877   161.94
2018.68    0.874   159.76
2019.68    0.872   157.56
2020.68    0.870   155.36
2021.68    0.868   153.14
2022.68    0.866   150.91
2023.68    0.864   148.67
2024.68    0.862   146.42
2025.68    0.860   144.16
2026.68    0.858   141.89
2027.68    0.857   139.61
2028.68    0.856   137.33
2029.68    0.855   135.04
2030.68    0.854   132.75
2031.68    0.854   130.45
2032.68    0.854   128.15
2033.68    0.854   125.86
2034.68    0.855   123.56
2035.68    0.856   121.28
2036.68    0.857   118.99
2037.68    0.859   116.72
2038.68    0.861   114.46
2039.68    0.864   112.20
2040.68    0.867   109.97
2041.68    0.870   107.75
2042.68    0.874   105.54
2043.68    0.878   103.36
2044.68    0.883   101.20
2045.68    0.888    99.06
2046.68    0.893    96.95
2047.68    0.899    94.86
2048.68    0.905    92.80
2049.68    0.911    90.77
2050.68    0.918    88.76
2051.68    0.925    86.79
2052.68    0.932    84.85
2053.68    0.939    82.93
2054.68    0.947    81.05
2055.68    0.955    79.20
2056.68    0.963    77.38
2057.68    0.972    75.59
2058.68    0.980    73.83
2059.68    0.989    72.11
2060.68    0.998    70.41
2061.68    1.007    68.74
2062.68    1.016    67.11
2063.68    1.026    65.50
2064.68    1.035    63.92
2065.68    1.044    62.37
2066.68    1.054    60.85
2067.68    1.063    59.36
2068.68    1.073    57.89
2069.68    1.082    56.44
2070.68    1.092    55.03
2071.68    1.101    53.63
2072.68    1.110    52.26
2073.68    1.120    50.92
2074.68    1.129    49.59
2075.68    1.138    48.29
2076.68    1.147    47.00
2077.68    1.156    45.74
2078.68    1.165    44.50
2079.68    1.174    43.27
2080.68    1.182    42.07
2081.68    1.191    40.88
2082.68    1.199    39.70
2083.68    1.207    38.55
2084.68    1.215    37.40
2085.68    1.223    36.28
2086.68    1.231    35.16
2087.68    1.238    34.06
2088.68    1.245    32.98
2089.68    1.252    31.90
2090.68    1.259    30.84
2091.68    1.266    29.79
2092.68    1.272    28.75
2093.68    1.278    27.72
2094.68    1.284    26.70
2095.68    1.290    25.69
2096.68    1.296    24.69
2097.68    1.301    23.70
2098.68    1.306    22.71
2099.68    1.311    21.73
2100.68    1.316    20.76
2101.68    1.320    19.80
2102.68    1.324    18.84
2103.68    1.328    17.89
2104.68    1.331    16.94
2105.68    1.335    16.00
2106.68    1.338    15.06
2107.68    1.341    14.13
2108.68    1.343    13.20
2109.68    1.346    12.27
2110.68    1.348    11.35
2111.68    1.349    10.43
2112.68    1.351     9.51
2113.68    1.352     8.59
2114.68    1.353     7.68
2115.68    1.354     6.76
2116.68    1.354     5.85
2117.68    1.355     4.94
2118.68    1.355     4.02
2119.68    1.354     3.11
2120.68    1.354     2.20
2121.68    1.353     1.28
2122.68    1.352     0.37
2123.68    1.350   359.45
2124.68    1.349   358.53
2125.68    1.347   357.61
2126.68    1.345   356.68
2127.68    1.343   355.76
2128.68    1.340   354.83
2129.68    1.337   353.89
2130.68    1.334   352.95
2131.68    1.331   352.01
2132.68    1.327   351.06
2133.68    1.323   350.11
2134.68    1.319   349.15
2135.68    1.315   348.18
2136.68    1.310   347.21

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 17:04:16