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HOME  >  SCIENCE  >  ASTRONOMY

Sun vs Betelgeuse size comparison



Comparison of size between the two stars, with the Sun on the first side and the red supergiant Betelgeuse on the other. If you can't see the Sun, it is normal, because it is far too small in front of Betelgeuse.

Betelgeuse
Betelgeuse


Object Sun Betelgeuse
TypeStar, yellow dwarfStar, red supergiant
Age4.6 billion years8.5 million years
Diameter1,392,684 km1,235,310,708 km
Mean radius696,342 km617,655,354 km
Mass1.98 × 1030 kg2.29 × 1031 kg
Rotation duration24 days30 years
Surface temperature
(average)
5,778 K
5,504 °C
9,940 °F
3,500 K
3,227 °C
5,840 °F
Surface gravity274.4 m/s²-0.001 m/s²
Circumference4.3 million km1.2 billion km
Surface area6.09 × 1012 km21.5 × 1018 km2
Volume1.41 × 1018 km39.87 × 1026 km3
Average orbital speed1.99 km/s5 km/s
Atmosphere composition 73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
hydrogen,
helium
Crust composition 73% hydrogen,
25% helium,
0.8% oxygen,
0.3% carbon
hydrogen,
helium
Sun distance0 km724 light years
Luminosity3.82 × 1026 W5.73 × 1031 W
Photosphere temperature5,772 K3,590 K
Distance from the Milky Way center27,200 light years-
Metallicity0.01220.05
Spectral classificationG2VM1–M2 Ia–ab
Absolute magnitude4.83-5.85
Right ascension19h 4m 30s05h 55m 10.29s
Declination+63.87°+07° 24′ 25.3″


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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