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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:26:53

Orbital Elements for STF1888AB
WDS: STF1888AB WDS ID/Discoverer
P: 152.961 Orbital period (years)
a: 4.93454 Semi-major axis (arcseconds)
i: 140.453 Inclination (degrees)
Ω: 168.795 Longitude of ascending node (degrees)
T: 1909.621 Epoch of periastron passage (year)
e: 0.51385 Eccentricity
ω: 25.492 Longitude of periastron (degrees)
Start-Year: 1949.0 Year
End-Year: 2101.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1888AB
Position: 145123.38+190601.7 Epoch-2000 right ascension and declination
WDS-ID: 14514+1906 WDS designation
Discoverer Code: STF1888AB Discover designation and components
ADS number: 9413 Aitken Double Star catalog
HD number: 131156 HD catalog number
Hipparcos number: 72659 Hipparcos catalog number
V1: 4.76 Magnitude of the primary
V2: 6.95 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1888AB



WDS 6th Orbit including measures of STF1888AB

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


Ephemeris of STF1888AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     4.907    289.8
-------------------------
1949.0     6.094    357.9
1950.0     6.177    356.9
1951.0     6.256    355.9
1952.0     6.332    355.0
1953.0     6.404    354.0
1954.0     6.474    353.1
1955.0     6.540    352.2
1956.0     6.603    351.3
1957.0     6.663    350.5
1958.0     6.720    349.6
1959.0     6.773    348.8
1960.0     6.824    348.0
1961.0     6.872    347.2
1962.0     6.917    346.4
1963.0     6.959    345.6
1964.0     6.998    344.8
1965.0     7.034    344.0
1966.0     7.067    343.3
1967.0     7.098    342.5
1968.0     7.126    341.8
1969.0     7.151    341.0
1970.0     7.173    340.3
1971.0     7.193    339.5
1972.0     7.210    338.8
1973.0     7.225    338.1
1974.0     7.237    337.4
1975.0     7.246    336.6
1976.0     7.253    335.9
1977.0     7.257    335.2
1978.0     7.259    334.5
1979.0     7.258    333.8
1980.0     7.255    333.0
1981.0     7.250    332.3
1982.0     7.242    331.6
1983.0     7.231    330.9
1984.0     7.219    330.1
1985.0     7.204    329.4
1986.0     7.186    328.7
1987.0     7.166    327.9
1988.0     7.144    327.2
1989.0     7.120    326.5
1990.0     7.093    325.7
1991.0     7.065    325.0
1992.0     7.034    324.2
1993.0     7.000    323.4
1994.0     6.965    322.6
1995.0     6.927    321.9
1996.0     6.888    321.1
1997.0     6.846    320.3
1998.0     6.802    319.4
1999.0     6.756    318.6
2000.0     6.707    317.8
2001.0     6.657    316.9
2002.0     6.605    316.1
2003.0     6.551    315.2
2004.0     6.494    314.3
2005.0     6.436    313.4
2006.0     6.376    312.5
2007.0     6.314    311.5
2008.0     6.249    310.6
2009.0     6.184    309.6
2010.0     6.116    308.6
2011.0     6.046    307.6
2012.0     5.975    306.5
2013.0     5.902    305.4
2014.0     5.827    304.3
2015.0     5.750    303.2
2016.0     5.672    302.0
2017.0     5.593    300.8
2018.0     5.512    299.6
2019.0     5.429    298.4
2020.0     5.345    297.0
2021.0     5.260    295.7
2022.0     5.173    294.3
2023.0     5.085    292.9
2024.0     4.996    291.4
2025.0     4.907    289.8
2026.0     4.816    288.2
2027.0     4.724    286.6
2028.0     4.632    284.8
2029.0     4.540    283.0
2030.0     4.447    281.1
2031.0     4.354    279.2
2032.0     4.261    277.1
2033.0     4.168    275.0
2034.0     4.076    272.8
2035.0     3.984    270.4
2036.0     3.893    268.0
2037.0     3.803    265.4
2038.0     3.715    262.8
2039.0     3.629    259.9
2040.0     3.545    257.0
2041.0     3.463    253.9
2042.0     3.384    250.7
2043.0     3.308    247.3
2044.0     3.235    243.7
2045.0     3.166    240.0
2046.0     3.101    236.2
2047.0     3.040    232.2
2048.0     2.983    228.0
2049.0     2.931    223.6
2050.0     2.882    219.1
2051.0     2.837    214.5
2052.0     2.795    209.7
2053.0     2.755    204.8
2054.0     2.717    199.7
2055.0     2.679    194.5
2056.0     2.640    189.2
2057.0     2.600    183.6
2058.0     2.556    177.9
2059.0     2.508    172.0
2060.0     2.456    165.9
2061.0     2.400    159.4
2062.0     2.341    152.7
2063.0     2.283    145.6
2064.0     2.228    138.1
2065.0     2.180    130.3
2066.0     2.145    122.2
2067.0     2.126    113.9
2068.0     2.127    105.5
2069.0     2.150     97.2
2070.0     2.196     89.2
2071.0     2.263     81.5
2072.0     2.350     74.4
2073.0     2.453     67.8
2074.0     2.571     61.8
2075.0     2.699     56.3
2076.0     2.836     51.4
2077.0     2.979     46.9
2078.0     3.125     42.8
2079.0     3.275     39.1
2080.0     3.425     35.7
2081.0     3.575     32.6
2082.0     3.725     29.8
2083.0     3.873     27.1
2084.0     4.019     24.7
2085.0     4.163     22.4
2086.0     4.304     20.3
2087.0     4.442     18.3
2088.0     4.577     16.5
2089.0     4.708     14.7
2090.0     4.836     13.0
2091.0     4.961     11.5
2092.0     5.082     10.0
2093.0     5.200      8.5
2094.0     5.314      7.2
2095.0     5.424      5.8
2096.0     5.531      4.6
2097.0     5.634      3.4
2098.0     5.734      2.2
2099.0     5.830      1.1
2100.0     5.923    360.0






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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