IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Hydra
The Hydra
OriginAncient
AbbreviationHya
GenitiveHydrae
Pronunciation/ˈhaɪdrə/ genitive /ˈhaɪdriː/
HIGH-druh
LocationCelestial Equator
Primary StarAlphard (α Hya)
Right Ascention 9h 28m Declination -8° 40'
Martian Solar Lag δ(🜨→♂) +0.272 h (16.3 min)
Hydra represents the Lernaean Hydra, a reptilian monster so vile that even its breath and blood were highly poisonous. It had nine serpent heads, eight mortal and one immortal. Every time one was cut off two would grow in its place. Defeating the Lernaean Hydra was the second labor assigned to Hercules by King Eurystheus. In the marshes of Lerna, Hercules drew out the Hydra from its lair, and with his mighty club, bashed one of its heads in. In its place, two heads sprouted, just as mean and deadly as the original. He realized he would need to take a different approach. He had his nephew Iolaus quickly cauterize each stump after it was bashed in. This prevented the heads from growing back. Hercules did this with each of the mortal heads. He struck off the immortal head and buried it deep in the ground and placed a huge rock on top of it. With his second labor complete, he dipped the tips of his arrows into the blood of the Hydra, covering them with deadly poison. In a second myth involving Hydra, this constellation represents the snake that Corvus used in a lie to Apollo.
www.underthesky.com
Hydra as depicted by Johann Bayer in his Uranometria (1603). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
←Hydra -557→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -557 2 Hydra -557 3 Hydra -557 4 Hydra -557 5 Hydra -557 6 Hydra -557 7 Hydra -557 8 Hydra -557 9 Hydra -557 10 Hydra -557 11 Hydra -557 12 Hydra -557 13 Hydra -557 14 Hydra -557 15 Hydra -557 16 Hydra -557 17 Hydra -557 18 Hydra -557 19 Hydra -557 20 Hydra -557 21 Hydra -557 22 Hydra -557 23 Hydra -557 24 Hydra -557 25 Hydra -557 26 Hydra -557 27 Hydra -557 28 Hydra -557 2 Centaurus -556 6 March 0563 7 March 0563 8 March 0563 9 March 0563 10 March 0563 11 March 0563 12 March 0563 13 March 0563 14 March 0563 15 March 0563 16 March 0563 17 March 0563 18 March 0563 19 March 0563 20 March 0563 21 March 0563 22 March 0563 23 March 0563 24 March 0563 25 March 0563 26 March 0563 27 March 0563 28 March 0563 29 March 0563 30 March 0563 31 March 0563 1 April 0563 2 April 0563 3 April 0563
MS -519764 MS -519765 MS -519766 MS -519767 MS -519768 MS -519769 MS -519770 MS -519771 MS -519772 MS -519773 MS -519774 MS -519775 MS -519776 MS -519777 MS -519778 MS -519779 MS -519780 MS -519781 MS -519782 MS -519783 MS -519784 MS -519785 MS -519786 MS -519787 MS -519788 MS -519789 MS -519790 MS -519791 MS -519737 MD -534212 MD -534211 MD -534210 MD -534209 MD -534208 MD -534207 MD -534206 MD -534205 MD -534204 MD -534203 MD -534202 MD -534201 MD -534200 MD -534199 MD -534198 MD -534197 MD -534196 MD -534195 MD -534194 MD -534193 MD -534192 MD -534191 MD -534190 MD -534189 MD -534188 MD -534187 MD -534186 MD -534185 MD -534184