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 -446→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -446 2 Hydra -446 3 Hydra -446 4 Hydra -446 5 Hydra -446 6 Hydra -446 7 Hydra -446 8 Hydra -446 9 Hydra -446 10 Hydra -446 11 Hydra -446 12 Hydra -446 13 Hydra -446 14 Hydra -446 15 Hydra -446 16 Hydra -446 17 Hydra -446 18 Hydra -446 19 Hydra -446 20 Hydra -446 21 Hydra -446 22 Hydra -446 23 Hydra -446 24 Hydra -446 25 Hydra -446 26 Hydra -446 27 Hydra -446 28 Hydra -446 2 Centaurus -445 6 January 0772 7 January 0772 8 January 0772 9 January 0772 10 January 0772 11 January 0772 12 January 0772 13 January 0772 14 January 0772 15 January 0772 16 January 0772 17 January 0772 18 January 0772 19 January 0772 20 January 0772 21 January 0772 22 January 0772 23 January 0772 24 January 0772 25 January 0772 26 January 0772 27 January 0772 28 January 0772 29 January 0772 30 January 0772 31 January 0772 1 February 0772 2 February 0772
MS -445550 MS -445551 MS -445552 MS -445553 MS -445554 MS -445555 MS -445556 MS -445557 MS -445558 MS -445559 MS -445560 MS -445561 MS -445562 MS -445563 MS -445564 MS -445565 MS -445566 MS -445567 MS -445568 MS -445569 MS -445570 MS -445571 MS -445572 MS -445573 MS -445574 MS -445575 MS -445576 MS -445577 MS -445523 MD -457936 MD -457935 MD -457934 MD -457933 MD -457932 MD -457931 MD -457930 MD -457929 MD -457928 MD -457927 MD -457926 MD -457925 MD -457924 MD -457923 MD -457922 MD -457921 MD -457920 MD -457919 MD -457918 MD -457917 MD -457916 MD -457915 MD -457914 MD -457913 MD -457912 MD -457911 MD -457910 MD -457909