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 1394→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 1394 2 Hydra 1394 3 Hydra 1394 4 Hydra 1394 5 Hydra 1394 6 Hydra 1394 7 Hydra 1394 8 Hydra 1394 9 Hydra 1394 10 Hydra 1394 11 Hydra 1394 12 Hydra 1394 13 Hydra 1394 14 Hydra 1394 15 Hydra 1394 16 Hydra 1394 17 Hydra 1394 18 Hydra 1394 19 Hydra 1394 20 Hydra 1394 21 Hydra 1394 22 Hydra 1394 23 Hydra 1394 24 Hydra 1394 25 Hydra 1394 26 Hydra 1394 27 Hydra 1394 28 Hydra 1394 1 Corvus 1394 9 September 4233 10 September 4233 11 September 4233 12 September 4233 13 September 4233 14 September 4233 15 September 4233 16 September 4233 17 September 4233 18 September 4233 19 September 4233 20 September 4233 21 September 4233 22 September 4233 23 September 4233 24 September 4233 25 September 4233 26 September 4233 27 September 4233 28 September 4233 29 September 4233 30 September 4233 1 October 4233 2 October 4233 3 October 4233 4 October 4233 5 October 4233 6 October 4233 7 October 4233 8 October 4233
MS 784630 MS 784631 MS 784632 MS 784633 MS 784634 MS 784635 MS 784636 MS 784637 MS 784638 MS 784639 MS 784640 MS 784641 MS 784642 MS 784643 MS 784644 MS 784645 MS 784646 MS 784647 MS 784648 MS 784649 MS 784650 MS 784651 MS 784652 MS 784653 MS 784654 MS 784655 MS 784656 MS 784657 MS 784658 MD 806415 MD 806416 MD 806417 MD 806418 MD 806419 MD 806420 MD 806421 MD 806422 MD 806423 MD 806424 MD 806425 MD 806426 MD 806427 MD 806428 MD 806429 MD 806430 MD 806431 MD 806432 MD 806433 MD 806434 MD 806435 MD 806436 MD 806437 MD 806438 MD 806439 MD 806440 MD 806441 MD 806442 MD 806443 MD 806444