Xi Bootis
CONTRAST MULTIPLE STAR
Right Ascension:
14h 51m 23s
Best Seen:
Declination:
19º 06' 01"
Combined
Magnitude:
Computer File:
Constellation:
BOOTES
Apparent
Separation:
6.6"
Actual
Compared to
Distance
21.8 l.y.
--
Separation
Average 33.6 AU
Our solar system-The B star would be between Neptune & Pluto
Orbital Period
151 years
--
Actual Brightness
--
A- 49% of Sun B- 6% of Sun
Magnitude
4.8,/6.7
--
Diameter
A- 89% of Sun B- 71% of Sun
Mass
--
A- 90% of Sun
B- 67-75% of Sun
Surface Gravity
--
--
Surface Composition (by mass)
Similar to Sun but higher metal content
Spectral Type
G8 Ve / K4-5 Ve
G2 V (Sun)
Density (gram/cubic cm)
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--
WHAT TO LOOK FOR THROUGH THE TELESCOPE:
-
Recommended eyepiece: 24mm or 40 mm.
-
When people look through the telescope they should see two stars ve next to each other. One star should appear yellow-orange and the other star pinkish-white.
XI BOOTIS INFORMATION:
-
The 2 stars are an average of 33.6 AU apart (That’s just a little closer than the distance to Pluto).
-
They are calculated to get as close as 16.5 AU and as far as 50.7 AU apart.
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There may be a third companion orbiting Xi Bootis B that is too dim to see, but detectable by the wobble it causes on the other 2 stars. One scientist suggests the unknown is about 9 times the mass of Jupiter. It may be a brown dwarf or a system of planets.
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The unknown companion makes Xi Bootis a good prospect in the hunt for planets.
Item
Updated
Notes
Coordinates
Combined Magnitude
Apparent Separation
02-17-2005
SIMBAD
Distance
Separation
Orbital Period
02-22-2005
http://www.solstation.com/orbits/xiboosys.htm
Actual Brightness
Magnitude
Diameter
02-22-2005
http://www.solstation.com/orbits/xiboosys.htm
Mass
02-22-2005
http://www.solstation.com/orbits/xiboosys.htm
Surface Gravity
Surface Composition
Spectral Type
02-17-2005
SIMBAD
Density
Other information
02-22-2005
orbit info
http://www.solstation.com/orbits/xiboosys.htm
Companion info
http://www.solstation.com/stars/xibootis.htm