Propus

Propus (η Geminorum) is a red giant star in the constellation Gemini. With an apparent magnitude of 3.28 it is the 231st-brightest star in the night sky, and it is about 384 light-years from Earth.

Finder chart showing where Propus is in the constellation Gemini
Propus (circled) in Gemini, with the surrounding constellations and bright stars.
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Facts

ConstellationGemini
Designationη Geminorum (Eta Geminorum), HR 2216
Apparent magnitude3.28 (231st brightest)
Spectral typeM3III
Colorred (B−V 1.60)
Distanceabout 384 light-years
Right ascension6 h 14.9 min
Declination+22.51°
Best monthFebruary (at about 9 pm)

Sources: star positions, magnitudes and colors from the Yale Bright Star Catalogue; constellation boundaries and star names from the IAU; areas and distances from Wikidata; stick figures by M. van der Sluys. How the maps are made.

How to find Propus

Propus is in Gemini. From 40° N it is highest in the south in February evenings, about 73° above the horizon. From 35° S it reaches about 32° in the north. Nearby bright stars: Alhena (8° away), Elnath (13° away) and Betelgeuse (16° away).

Gemini constellation →

Other named stars in Gemini

PolluxAlhenaCastorTejatMebsutaAlzirrWasatMekbudaJishui

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