Object | Betelgeuse | Sun |
---|---|---|
Type | Star, red supergiant | Star, yellow dwarf |
Age | 8.5 million years | 4.6 billion years |
Diameter | 1,235,310,708 km | 1,392,684 km |
Mean radius | 617,655,354 km | 696,342 km |
Mass | 2.29 × 1031 kg | 1.98 × 1030 kg |
Rotation duration | 30 years | 24 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/s² | 274.4 m/s² |
Circumference | 1.2 billion km | 4.3 million km |
Surface area | 1.5 × 1018 km2 | 6.09 × 1012 km2 |
Volume | 9.87 × 1026 km3 | 1.41 × 1018 km3 |
Average orbital speed | 5 km/s | 1.99 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 distance | 724 light years | 0 km |
Luminosity | 5.73 × 1031 W | 3.82 × 1026 W |
Photosphere temperature | 3,590 K | 5,772 K |
Distance from the Milky Way center | - | 27,200 light years |
Metallicity | 0.05 | 0.0122 |
Spectral classification | M1–M2 Ia–ab | G2V |
Absolute magnitude | -5.85 | 4.83 |
Right ascension | 05h 55m 10.29s | 19h 4m 30s |
Declination | +07° 24′ 25.3″ | +63.87° |