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 -449→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -449 2 Hydra -449 3 Hydra -449 4 Hydra -449 5 Hydra -449 6 Hydra -449 7 Hydra -449 8 Hydra -449 9 Hydra -449 10 Hydra -449 11 Hydra -449 12 Hydra -449 13 Hydra -449 14 Hydra -449 15 Hydra -449 16 Hydra -449 17 Hydra -449 18 Hydra -449 19 Hydra -449 20 Hydra -449 21 Hydra -449 22 Hydra -449 23 Hydra -449 24 Hydra -449 25 Hydra -449 26 Hydra -449 27 Hydra -449 28 Hydra -449 2 Centaurus -448 15 May 0766 16 May 0766 17 May 0766 18 May 0766 19 May 0766 20 May 0766 21 May 0766 22 May 0766 23 May 0766 24 May 0766 25 May 0766 26 May 0766 27 May 0766 28 May 0766 29 May 0766 30 May 0766 31 May 0766 1 June 0766 2 June 0766 3 June 0766 4 June 0766 5 June 0766 6 June 0766 7 June 0766 8 June 0766 9 June 0766 10 June 0766 11 June 0766 12 June 0766
MS -447556 MS -447557 MS -447558 MS -447559 MS -447560 MS -447561 MS -447562 MS -447563 MS -447564 MS -447565 MS -447566 MS -447567 MS -447568 MS -447569 MS -447570 MS -447571 MS -447572 MS -447573 MS -447574 MS -447575 MS -447576 MS -447577 MS -447578 MS -447579 MS -447580 MS -447581 MS -447582 MS -447583 MS -447529 MD -459998 MD -459997 MD -459996 MD -459995 MD -459994 MD -459993 MD -459992 MD -459991 MD -459990 MD -459989 MD -459988 MD -459987 MD -459986 MD -459985 MD -459984 MD -459983 MD -459982 MD -459981 MD -459980 MD -459979 MD -459978 MD -459977 MD -459976 MD -459975 MD -459974 MD -459973 MD -459972 MD -459971 MD -459970