Size of the stars on constellation Orion compared to the sun!?

I need to know the size of mainly the five brightest stars on Orion compared to the sun. Looked on many websites but cant find their size.Size of the stars on constellation Orion compared to the sun!?You could try wikipedia, with the individual names of the stars.



Begin with Orion to find the names of the stars you want.



Let us say you want:



Betelgeuse

Rigel

Bellatrix

Mintaka and

Saiph

(your choice may vary)



Betelgeuse at

http://en.wikipedia.org/wiki/Betelgeuse

Under details (table on the right) 630 times the radius of the Sun (Ro with a tiny dot in the o); it is a red giant.



Rigel: 70 Ro (a blue giant)

Bellatrix: 5.7 Ro



and so on.

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Radius of our Sun = 696,265 km

Radius of Betelgeuse = 630 * 696,265 km = 438,646,950 km (almost three times the size of Earth's orbit!)Size of the stars on constellation Orion compared to the sun!?What you need to do is look up the names of the stars in question in a star atlas (try Norton), and then look for information on those (hint: I just had a quick look and found what was needed on Wikipedia). You should also look for information on the size of the sun. From that you will be able to do a comparison.



You don't say exactly what you mean by "size", so I suggest you find the masses of these stars as well as their radii.Size of the stars on constellation Orion compared to the sun!?If you're refering to the red giants, Rigel and Betelgeuse, they would take up to the orbit of earth or Jupiter. Betelgeuse is bigger. Rigel is a binary star and brighter than Betelgeuse. It is also twice as far away from earth as Betelgeuse.