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 719→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 719 2 Hydra 719 3 Hydra 719 4 Hydra 719 5 Hydra 719 6 Hydra 719 7 Hydra 719 8 Hydra 719 9 Hydra 719 10 Hydra 719 11 Hydra 719 12 Hydra 719 13 Hydra 719 14 Hydra 719 15 Hydra 719 16 Hydra 719 17 Hydra 719 18 Hydra 719 19 Hydra 719 20 Hydra 719 21 Hydra 719 22 Hydra 719 23 Hydra 719 24 Hydra 719 25 Hydra 719 26 Hydra 719 27 Hydra 719 28 Hydra 719 1 Corvus 719 1 October 2963 2 October 2963 3 October 2963 4 October 2963 5 October 2963 6 October 2963 7 October 2963 8 October 2963 9 October 2963 10 October 2963 11 October 2963 12 October 2963 13 October 2963 14 October 2963 15 October 2963 16 October 2963 17 October 2963 18 October 2963 19 October 2963 20 October 2963 21 October 2963 22 October 2963 23 October 2963 24 October 2963 25 October 2963 26 October 2963 27 October 2963 28 October 2963 29 October 2963 30 October 2963
MS 333330 MS 333331 MS 333332 MS 333333 MS 333334 MS 333335 MS 333336 MS 333337 MS 333338 MS 333339 MS 333340 MS 333341 MS 333342 MS 333343 MS 333344 MS 333345 MS 333346 MS 333347 MS 333348 MS 333349 MS 333350 MS 333351 MS 333352 MS 333353 MS 333354 MS 333355 MS 333356 MS 333357 MS 333358 MD 342579 MD 342580 MD 342581 MD 342582 MD 342583 MD 342584 MD 342585 MD 342586 MD 342587 MD 342588 MD 342589 MD 342590 MD 342591 MD 342592 MD 342593 MD 342594 MD 342595 MD 342596 MD 342597 MD 342598 MD 342599 MD 342600 MD 342601 MD 342602 MD 342603 MD 342604 MD 342605 MD 342606 MD 342607 MD 342608