A measuring apparatus has: a recording portion that optically records a flying body at intervals, to obtain a first image and a second image; an image information computing portion that detects a first outline region of the flying body from the first image and a second outline region of the flying body from the second image, and finds first image information from the first image and second image information from the second image: and a rotation amount computing portion that maps the first image information to a surface of a first visual spherical body, the second image information to a surface of a second virtual spherical body, and computes a rotation amount that is used for rotation processing when the rotation processing is performed on the first virtual spherical body to obtain a highest correlation between the first image information and the second image information.