Square degree
Unit of solid angle
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A square degree is a non-SI unit measure of solid angle. Other denotations include sq. deg. and ². Just as degrees are used to measure parts of a circle, square degrees are used to measure parts of a sphere. Wikipedia
1 deg2 in: is equal to
SI units: ≈ 3.04617×10−4 sr
Symbol: deg2
Unit of: Solid angle