Astrophysics (index)about

G-Type Star

(G, G-Dwarf, G-Class Star)
(stars similar to the Sun)

A G-Type Star (i.e., G-Class Star or G-Dwarf), is a star of the G-Class, i.e., the Spectral Class for stars of around a solar mass and solar radius, i.e., the Sun is of this type. They burn up their Hydrogen in about ten billion years. They have weak hydrogen Absorption Lines. Characteristics:

yellowConventional color
5500-6000KSurface Temperature
2.6-4.7Absolute Magnitude(visual)
9-18 Billion YearsMain-Sequence lifetime

(star type,spectral type)
387nm775THz3.3eVbeginG-Type Star
527nm569THz2.4eVendG-Type Star

Referenced by:
Calcium (Ca)
FGK Star
55 Cancri e (55 Cnc e)
G Band
G-Dwarf Problem
HD 209458 b
HD 80606 b
Kepler Telescope
Multiplicity Fraction
Spectral Class
Transiting Exoplanet Survey Satellite (TESS)