. "deg2"^^ . . "\u00B0\u00B2" . . "0.00030461742"^^ . . "Square degree"@en . . . "A square degree is a non-SI unit measure of solid angle. It is denoted in various ways, including deg, sq. deg. and \\(\\circ^2\\). Just as degrees are used to measure parts of a circle, square degrees are used to measure parts of a sphere. Analogous to one degree being equal to \\(\\pi\u00A0/180\u00A0radians\\), a square degree is equal to (\\(\\pi\u00A0/180)\\) or about 1/3283\u00A0steradian. The number of square degrees in a whole sphere is or approximately 41 253\u00A0deg. This is the total area of the 88 constellations in the list of constellations by area. For example, observed from the surface of the Earth, the Moon has a diameter of approximately \\(0.5^\\circ\\), so it covers a solid angle of approximately 0.196\u00A0deg, which is \\(4.8\u00A0\\times\u00A010\\) of the total sky sphere."^^ . . "\\(deg^2\\)"^^ . . . . . .