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Earth and Space Sciences · 术语表

什么是 Absolute magnitude, distance modulus?

又称: absolute magnitude · distance modulus

Definition 2.15 University Earth and Space Sciences — Year 1 · 第 2 章 — Telescopes, Detectors and Photometry

The absolute magnitude MM of a star in a band is the apparent magnitude it would have at the distance of 10 pc10\,\mathrm{pc}, seen through empty space. The difference m−Mm - M is its distance modulus.

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