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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:26

Orbital Elements for KUI50

WDS:	KUI50	WDS ID/Discoverer
P:	80.592	Orbital period (years)
a:	8.4573	Semi-major axis (arcseconds)
i:	95.283	Inclination (degrees)
Ω:	178.811	Longitude of ascending node (degrees)
T:	1981.110	Epoch of periastron passage (year)
e:	0.99	Eccentricity
ω:	284.665	Longitude of periastron (degrees)
Start-Year:	1985.0	Year
End-Year:	2065.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KUI50

Position:	102803.88+484705.6	Epoch-2000 right ascension and declination
WDS-ID:	10281+4847	WDS designation
Discoverer Code:	KUI50	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	90508	HD catalog number
Hipparcos number:	51248	Hipparcos catalog number
V1:	6.4	Magnitude of the primary
V2:	12.6	Magnitude of the secondary
Equinox:		Equinox
Date:	2012	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for KUI50

WDS 6th Orbit including measures of KUI50

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

Ephemeris of KUI50

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     4.646     17.5
-------------------------
1985.0     0.623     56.6
1986.0     0.797     48.3
1987.0     0.971     42.9
1988.0     1.143     39.2
1989.0     1.310     36.4
1990.0     1.473     34.2
1991.0     1.630     32.5
1992.0     1.783     31.1
1993.0     1.930     29.9
1994.0     2.073     28.8
1995.0     2.212     27.9
1996.0     2.346     27.1
1997.0     2.476     26.4
1998.0     2.601     25.8
1999.0     2.723     25.2
2000.0     2.840     24.7
2001.0     2.954     24.2
2002.0     3.064     23.7
2003.0     3.171     23.3
2004.0     3.273     22.9
2005.0     3.373     22.5
2006.0     3.468     22.1
2007.0     3.560     21.8
2008.0     3.649     21.5
2009.0     3.735     21.2
2010.0     3.817     20.9
2011.0     3.895     20.6
2012.0     3.971     20.3
2013.0     4.043     20.1
2014.0     4.111     19.8
2015.0     4.177     19.6
2016.0     4.239     19.4
2017.0     4.298     19.1
2018.0     4.353     18.9
2019.0     4.405     18.7
2020.0     4.454     18.5
2021.0     4.499     18.3
2022.0     4.541     18.1
2023.0     4.580     17.9
2024.0     4.615     17.7
2025.0     4.646     17.5
2026.0     4.674     17.3
2027.0     4.699     17.1
2028.0     4.719     16.9
2029.0     4.736     16.7
2030.0     4.749     16.5
2031.0     4.758     16.4
2032.0     4.763     16.2
2033.0     4.764     16.0
2034.0     4.760     15.8
2035.0     4.752     15.6
2036.0     4.740     15.4
2037.0     4.723     15.3
2038.0     4.701     15.1
2039.0     4.674     14.9
2040.0     4.641     14.7
2041.0     4.603     14.5
2042.0     4.559     14.3
2043.0     4.510     14.1
2044.0     4.453     13.9
2045.0     4.390     13.7
2046.0     4.319     13.5
2047.0     4.241     13.2
2048.0     4.153     13.0
2049.0     4.057     12.8
2050.0     3.950     12.5
2051.0     3.832     12.2
2052.0     3.702     11.9
2053.0     3.557     11.6
2054.0     3.395     11.3
2055.0     3.214     10.9
2056.0     3.010     10.5
2057.0     2.776     10.0
2058.0     2.504      9.4
2059.0     2.178      8.6
2060.0     1.763      7.5
2061.0     1.161      5.6
2062.0     0.326    162.5
2063.0     0.313    122.3
2064.0     0.380     85.4

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.