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phase angle

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absolute magnitude

Overview page. Subjects: Astronomy and Astrophysics.

(M)

1 The brightness that a star would have if it were at a distance of 10 parsecs in perfectly clear space without interstellar absorption. Absolute magnitude is...

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geometrical albedo

Overview page. Subjects: Astronomy and Astrophysics.

A measure of the reflectivity of a surface, particularly that of a Solar System object such as a planet, a satellite, or an asteroid; also called physical albedo. The geometrical albedo is...

See overview in Oxford Index