Moons page — updated on February 16th, 2017

Monday, July 11, 2016

What is the Apparent Magnitude of Alnair?

Scientifically known as Alpha (α) Gruis, GRUS the Crane's Alnair star is the brightest and most visible object in the aforementioned Southern Hemisphere constellation. Google, Wikipedia, and the Illustrated Atlas of the Universe (© 2006) agree that Alnair's apparent magnitude is 1.74. WolframAlpha — a scientific search engine — was close, stating that it is 1.73. Apparent magnitude refers to the amount of brightness a stargazer on Earth could see with their "naked-eye" vision.

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Blog Background

The background has three Hubble Space Telescope images, which are accessible at this Hubble webpage: Hubblesite.org/categories/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.

HubbleSite Image Links: LH 95, Ant Nebula, and Egg Nebula