Equuleus & Eridani

The beautiful triple system Omicron Eridani, at 16.2 LY distant, is the 49th closest star system to our Sun.   The B component was the first white Dwarf star to be discovered and the most easily visible from Earth. The C component is a Red Dwarf star with a mass 1/5 that of our Sun. This system has been featured in many science fiction novels as a home to extraterrestrial life. Most notably the B star is the home star of Star Treks’ Mr. Spock and more recently the A component is the home star of “Rocky”, the Eridanian alien featured in Andy Weir’s novel and recently released movie “Project Hail Mary”.

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51 Eridani is just visible to the naked eye at magnitude 5.2. The physically bound C component is itself a close binary system made up of two Red Dwarf stars separated by only 0.14 AU.

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Gamma Eridani is relatively close at 203 LY. The A-B components are Physically related.
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