Betelgeuse (α Orionis) is a red supergiant star (M2Ib) in the constellation of Orion.
Betelgeuse is a red supergiant star, about 800 times the diameter of our own Sun. In the visual range, it is about 10,000 times brighter. Betelgeuse has reached the end of its life span and may explode into a supernova at any time. In fact, it may already have. Since it takes the light of betelgeuse around 550 years to reach our Earth, what we see today is what actually happened 550 years ago.
Betelgeuse is one of the main stars in the well-known constellation Orion. It is the upper left shoulder star and can easily be identified due to its red color. It
5h 55m 10.29s (88.79287°)
The magnitude (brightness) is measured on a logarithmic scale. Small numbers mean bright stars: A star with a brightness of 1 mag is 100 times brighter that an star with 6 mag.
The distance is measured in light years (LY). A light year is the distance, that light travels within one year. 1 LJ is equal to about 5,878,630,000,000 miles.
This star belongs to the huge UCAC 3 catalog. It is identified by this number in the UCAC 3 catalog.
Every star belongs to a constellation, and 12 of those constellations are part of the zodiac.
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