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 -374→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -374 2 Hydra -374 3 Hydra -374 4 Hydra -374 5 Hydra -374 6 Hydra -374 7 Hydra -374 8 Hydra -374 9 Hydra -374 10 Hydra -374 11 Hydra -374 12 Hydra -374 13 Hydra -374 14 Hydra -374 15 Hydra -374 16 Hydra -374 17 Hydra -374 18 Hydra -374 19 Hydra -374 20 Hydra -374 21 Hydra -374 22 Hydra -374 23 Hydra -374 24 Hydra -374 25 Hydra -374 26 Hydra -374 27 Hydra -374 28 Hydra -374 2 Centaurus -373 23 June 0907 24 June 0907 25 June 0907 26 June 0907 27 June 0907 28 June 0907 29 June 0907 30 June 0907 1 July 0907 2 July 0907 3 July 0907 4 July 0907 5 July 0907 6 July 0907 7 July 0907 8 July 0907 9 July 0907 10 July 0907 11 July 0907 12 July 0907 13 July 0907 14 July 0907 15 July 0907 16 July 0907 17 July 0907 18 July 0907 19 July 0907 20 July 0907 21 July 0907
MS -397411 MS -397412 MS -397413 MS -397414 MS -397415 MS -397416 MS -397417 MS -397418 MS -397419 MS -397420 MS -397421 MS -397422 MS -397423 MS -397424 MS -397425 MS -397426 MS -397427 MS -397428 MS -397429 MS -397430 MS -397431 MS -397432 MS -397433 MS -397434 MS -397435 MS -397436 MS -397437 MS -397438 MS -397384 MD -408460 MD -408459 MD -408458 MD -408457 MD -408456 MD -408455 MD -408454 MD -408453 MD -408452 MD -408451 MD -408450 MD -408449 MD -408448 MD -408447 MD -408446 MD -408445 MD -408444 MD -408443 MD -408442 MD -408441 MD -408440 MD -408439 MD -408438 MD -408437 MD -408436 MD -408435 MD -408434 MD -408433 MD -408432