Tuesday, December 15, 2015

What is the Apparent Magnitude of Rigel?

Google and Wikipedia list the apparent magnitude of Rigel, a bright star in the southeastern region of ORION the Hunter, as 0.12. However, EarthSky (reputable astronomy news source), WolframAlpha (scientific search engine), and various universities (including Florida St. University's Physics Dept.) say 0.18. Therefore, 0.18 may seem to be a more reputable answer.
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Blog Background

The background has three Hubble Space Telescope images:

— LH 95 is a star-forming region in the Large Magellanic Cloud, Dorado constellation.

— Ant Nebula (also called Menzel 3) is an aptly-named planetary nebula located in the constellation Norma.

— Egg Nebula (also called CL 2688) is a protoplanetary nebula in the constellation Cygnus.