What letter classification corresponds to the Sun, and what is its approximate surface temperature?
Answer
G type, with an approximate temperature of 5,800 K or 6,000 K.
The OBAFGKM sequence is the formal system astronomers use to categorize stars based on decreasing surface temperature. Our Sun is identified as fitting into the G-type star category. This classification places the Sun squarely within the Yellow-White temperature range. The text specifies that the Sun’s surface temperature is approximately 5,800 Kelvin or 6,000 Kelvin. Stars in this central classification band are known for fusing hydrogen into helium during their longest phase of existence and radiate energy relatively evenly across the visible spectrum.
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