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With Explore the Planets, investigate the planets, their moons, and understand the processes that shape them. By G. Jeffrey Taylor, Ph.D. See our DVD collection.
The region of sky near the star Mu Cephei, with a nebula known as IC 1396.
Click on image for star map
Matt BenDaniel

Mu Cephei Deep Red Giant

What's in a Name: Known as the "Garnet Star" because of its deep red color - one of the most intensely colored stars ever recorded when viewed through a telescope.
Claim to Fame: Famous variable star. Its brightness is 4 times greater at its maximum than at its minimum.
Type of Star: Red Giant (M2 Ia Spectral Class)
How Far Away: 1,550 light years away
How Big: 2536 times the solar radius. Would fill the orbit of Saturn. Could pack more than 1 billion suns into the same volume.
How Bright: 38,000 times brighter than the sun. Absolute visual magnitude, Mv =-6.7
Where to View: Located in the constellation of Cepheus (Star Map)
When to View: Best viewed from the Northern hemisphere during August through January

Last modified January 17, 2006 by Travis Metcalfe.

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The Summer 2010 issue of The Earth Scientist, available in our online store, includes articles on rivers and snow, classroom planetariums, satellites and oceanography, hands-on astronomy, and global warming.

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