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Betelgeuse size compared to the Sun



The size of the red supergiant star Betelgeuse compared to the one of the Sun. You can't see the Sun because it is too small to be displayed on this scale.

Sun
Sun


Object Betelgeuse Sun
TypeStar, red supergiantStar, yellow dwarf
Age8.5 million years4.6 billion years
Diameter1,235,310,708 km1,392,684 km
Mean radius617,655,354 km696,342 km
Mass2.29 × 1031 kg1.98 × 1030 kg
Rotation duration30 years24 days
Surface temperature
(average)
3,500 K
3,227 °C
5,840 °F
5,778 K
5,504 °C
9,940 °F
Surface gravity-0.001 m/s²274.4 m/s²
Circumference1.2 billion km4.3 million km
Surface area1.5 × 1018 km26.09 × 1012 km2
Volume9.87 × 1026 km31.41 × 1018 km3
Average orbital speed5 km/s1.99 km/s
Atmosphere composition hydrogen,
helium
73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
Crust composition hydrogen,
helium
73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
Sun distance724 light years0 km
Luminosity5.73 × 1031 W3.82 × 1026 W
Photosphere temperature3,590 K5,772 K
Distance from the Milky Way center-27,200 light years
Metallicity0.050.0122
Spectral classificationM1–M2 Ia–abG2V
Absolute magnitude-5.854.83
Right ascension05h 55m 10.29s19h 4m 30s
Declination+07° 24′ 25.3″+63.87°


Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.


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