Sextans

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AbbreviationSex
MeaningSextant
Pronunciation Guide is based on “Pronouncing Astronomical Names,” published in 1943 by the American Astronomical Society.SEX-tunz
Genitive The genitive is the Latin possessive form used in star names. For example, Alpha Orionis means “the Alpha of Orion.”seks-TAN-tis
Best MonthApril
VisibilityGlobal
OriginModernAdded between the 17th and 18th centuries by astronomers like Hevelius or Plancius to define faint star clusters ignored by the ancients.
AuthorHeveliusA Polish astronomer known as the "founder of lunar topography" who added several "filler" constellations using high-precision instruments.
Typeconstellation
DifficultyExpert
DescriptionThe Sextant was created by Johannes Hevelius in 1687 to commemorate the loss of his great astronomical sextant — and most of his life's work — when his observatory in Danzig burned to the ground in a catastrophic fire in 1679. He had used the sextant to make precise naked-eye measurements of star positions achieving accuracy rivaling modern instrumentation. The constellation contains the Sextans Dwarf Galaxy — an extremely faint satellite galaxy of the Milky Way discovered only in 1990, about 280,000 light-years away, one of the many faint dwarf galaxies that were only revealed by modern wide-field surveys of our galactic neighborhood.

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