Hydra (constellation)

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Hydra
Hydra
Click for larger image
List of stars in Hydra
Abbreviation: Hya
Genitive: Hydrae
Symbology:
Right ascension: 8–15 h
Declination: −20°
Area: 1303 sq. deg. (1st)
Main stars: 17
Bayer/Flamsteed stars: 75
Stars known to have planets: 16
Bright stars: 2
Nearby stars: 4
Brightest star: Alphard (α Hya) (1.98m)
Nearest star: LHS 3003 ( ly)
Messier objects: 3
Meteor showers:
  • Alpha Hydrids
  • Sigma Hydrids
Bordering constellations:
Visible at latitudes between +54° and −83°
Best visible at 21:00 (9 p.m.) during the month of April
Map of the constellation

Hydra is a constellation that has parts in the northern sky and parts in the southern sky. It is the biggest constellation. It represents a water snake. The astronomer named Ptolemy listed Hydra when he made a list of 48 constellations.[1] It is also one of the 88 modern constellations that were made by the International Astronomical Union.

Even though Hydra is a very big constellation, it only has one bright star. This star is named Alphard. Alphard means "the solitary one" in Arabic. Hydra actually has little to identify it exept for a cluster of stars at its head.

References[change | change source]

  1. Ridpath, Ian. "Chapter One Continued". Star Tales. Retrieved 4 Feb 2013.