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Sun Sun symbol.svg
Sun white.jpg
Sun with sunspots and limb darkening as seen in visible light with solar filter.
The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819.jpg
False-color photo of the Sun as seen in ultraviolet light (wavelength of 30.4 nm)
Observation data
Mean distance
from Earth
1 auLua error in package.lua at line 80: module 'Module:Gapnum' not found.
8 min 19 s at light speed
Visual brightness (V)−26.74
Absolute magnitude4.83
Spectral classificationG2V
MetallicityZ = 0.0122
Angular size31.6–32.7 minutes of arc
AdjectivesSolar
Orbital characteristics
Mean distance
from Milky Way core
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Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Galactic period(2.25–2.50)×108yr
Velocity≈ Lua error in package.lua at line 80: module 'Module:Gapnum' not found. (orbit around the center of the Milky Way)
≈ Lua error in package.lua at line 80: module 'Module:Gapnum' not found. (relative to average velocity of other stars in stellar neighborhood)
≈ Lua error in package.lua at line 80: module 'Module:Gapnum' not found. (relative to the cosmic microwave background)
Physical characteristics
Equatorial radius695,700 km,
696,342 km
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Equatorial circumferenceLua error in package.lua at line 80: module 'Module:Gapnum' not found.
109 × Earth
FlatteningLua error in package.lua at line 80: module 'Module:Gapnum' not found.
Surface areaLua error in package.lua at line 80: module 'Module:Gapnum' not found.
Lua error in package.lua at line 80: module 'Module:Gapnum' not found. × Earth
VolumeLua error in package.lua at line 80: module 'Module:Gapnum' not found.
Lua error in package.lua at line 80: module 'Module:Gapnum' not found. × Earth
MassLua error in package.lua at line 80: module 'Module:Gapnum' not found.
Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Average densityLua error in package.lua at line 80: module 'Module:Gapnum' not found.
Lua error in package.lua at line 80: module 'Module:Gapnum' not found. × Earth
Center density (modeled)Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Lua error in package.lua at line 80: module 'Module:Gapnum' not found. × Earth
Equatorial surface gravityLua error in package.lua at line 80: module 'Module:Gapnum' not found.
28 × Earth
Moment of inertia factorLua error in package.lua at line 80: module 'Module:Gapnum' not found. (estimate)
Escape velocity
(from the surface)
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55 × Earth
TemperatureCenter (modeled): Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Photosphere (effective): Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Corona: ≈ Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Luminosity (Lsol)Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
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Color (B-V)0.63
Mean radiance (Isol)Lua error in package.lua at line 80: module 'Module:Gapnum' not found.
Age≈ 4.6 billion years
Rotation characteristics
Obliquity7.25°
(to the ecliptic)
67.23°
(to the galactic plane)
Right ascension
of North pole
286.13°
19 h 4 min 30 s
Declination
of North pole
+63.87°
63° 52' North
Sidereal rotation period
(at equator)
25.05 d
(at 16° latitude)25.38 d
25 d 9 h 7 min 12 s
(at poles)34.4 d
Rotation velocity
(at equator)
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Photospheric composition (by mass)
Hydrogen73.46%
Helium24.85%
Oxygen0.77%
Carbon0.29%
Iron0.16%
Neon0.12%
Nitrogen0.09%
Silicon0.07%
Magnesium0.05%
Sulfur0.04%
The Sun as it is seen from Earth

The Sun is the star in the center of our solar system. It is a yellow dwarf star. It gives off energy as light. That includes light, infra-red energy (heat), ultraviolet light and radio waves. It also gives off a stream of particles, which reaches Earth as "solar wind". The source of all this energy is nuclear fusion. Nuclear fusion is the reaction in the star which turns hydrogen into helium and makes huge amounts of energy. view more...


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What is the Sun Made Of | COLOSSAL QUESTIONS

What is the Sun Made Of | COLOSSAL QUESTIONS
Planets In Our Solar System | Sun And Solar System | Solar System For Children | 8 Planets Elearnin

Planets In Our Solar System | Sun And Solar System | Solar System For Children | 8 Planets Elearnin
How Big Is The Sun

How Big Is The Sun
Following The Sun: Crash Course Kids #8.2

Following The Sun: Crash Course Kids #8.2
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