The Earth’s sun is what type of star?
As Pink Floyd might have said, ‘Set the Controls for the Heart of the Yellow Dwarf.’ Hmm, doesn’t quite have the same ring to it. Anyway, our sun is indeed a yellow dwarf star, but there are still things we don’t know about it. One of those is the way solar winds work, which is part of what the upcoming Parker Solar Probe will attempt to look into when it travels the sun’s outer ‘corona’ in 2018. Sources: NASA, The New York Times
According to their system of classification, the Sun is known as a yellow dwarf star. … So the Sun is at the higher end of this group. The official designation is as a G V star. Stars in the this classification have a surface temperature between 5,300 and 6,000 K, and fuse hydrogen into helium to generate their light.
The sun is classified as a G-type main-sequence star, or G dwarf star, or more imprecisely, a yellow dwarf. Actually, the sun — like other G-type stars — is white, but appears yellow through Earth’s atmosphere. Stars generally get bigger as they grow older.
A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.8 to 1.2 solar masses and surface temperature of between 5,300 and 6,000 K.
Of course, some dwarf stars are much smaller (less massive, have a smaller radius, etc) than normal (or main sequence, not really massive) stars … and these have names, like white dwarf, red dwarf, brown dwarf, and black dwarf. Our very own Sol (the Sun) is a dwarf star … a yellow dwarf.