What is the full classification designation assigned to Our Sun?
Answer
G2V
The specific designation G2V for the Sun combines both the spectral class and the luminosity class. The 'G2' component indicates its surface temperature—it is a G-type star slightly hotter than a K-type but cooler than an F-type, with '2' specifying its position within that temperature range. The 'V' component signifies that it is a Main-Sequence Star, meaning it is currently stable and fusing hydrogen in its core, spending the longest phase of its life in this configuration.

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