The Sextant

Abbreviation: Sex
Genitive: Sextantis

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Polish astronomer Johannes Hevelius created this constellation in the late seventeenth century. It represents the astronomical sextant.

Notable Features

Designation Name Description
C53 Spindle Galaxy This is an edge-on lenticular galaxy with a central supermassive black hole. It is estimated that the mass of the black hole is on the order of 2 billion solar masses, making it the nearest billion-solar-mass black hole to the Earth.