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 -540→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -540 2 Hydra -540 3 Hydra -540 4 Hydra -540 5 Hydra -540 6 Hydra -540 7 Hydra -540 8 Hydra -540 9 Hydra -540 10 Hydra -540 11 Hydra -540 12 Hydra -540 13 Hydra -540 14 Hydra -540 15 Hydra -540 16 Hydra -540 17 Hydra -540 18 Hydra -540 19 Hydra -540 20 Hydra -540 21 Hydra -540 22 Hydra -540 23 Hydra -540 24 Hydra -540 25 Hydra -540 26 Hydra -540 27 Hydra -540 28 Hydra -540 3 Centaurus -539 28 February 0595 1 March 0595 2 March 0595 3 March 0595 4 March 0595 5 March 0595 6 March 0595 7 March 0595 8 March 0595 9 March 0595 10 March 0595 11 March 0595 12 March 0595 13 March 0595 14 March 0595 15 March 0595 16 March 0595 17 March 0595 18 March 0595 19 March 0595 20 March 0595 21 March 0595 22 March 0595 23 March 0595 24 March 0595 25 March 0595 26 March 0595 27 March 0595 28 March 0595
MS -508398 MS -508399 MS -508400 MS -508401 MS -508402 MS -508403 MS -508404 MS -508405 MS -508406 MS -508407 MS -508408 MS -508409 MS -508410 MS -508411 MS -508412 MS -508413 MS -508414 MS -508415 MS -508416 MS -508417 MS -508418 MS -508419 MS -508420 MS -508421 MS -508422 MS -508423 MS -508424 MS -508425 MS -508371 MD -522530 MD -522529 MD -522528 MD -522527 MD -522526 MD -522525 MD -522524 MD -522523 MD -522522 MD -522521 MD -522520 MD -522519 MD -522518 MD -522517 MD -522516 MD -522515 MD -522514 MD -522513 MD -522512 MD -522511 MD -522510 MD -522509 MD -522508 MD -522507 MD -522506 MD -522505 MD -522504 MD -522503 MD -522502