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 1020→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 1020 2 Hydra 1020 3 Hydra 1020 4 Hydra 1020 5 Hydra 1020 6 Hydra 1020 7 Hydra 1020 8 Hydra 1020 9 Hydra 1020 10 Hydra 1020 11 Hydra 1020 12 Hydra 1020 13 Hydra 1020 14 Hydra 1020 15 Hydra 1020 16 Hydra 1020 17 Hydra 1020 18 Hydra 1020 19 Hydra 1020 20 Hydra 1020 21 Hydra 1020 22 Hydra 1020 23 Hydra 1020 24 Hydra 1020 25 Hydra 1020 26 Hydra 1020 27 Hydra 1020 28 Hydra 1020 1 Corvus 1020 18 January 3530 19 January 3530 20 January 3530 21 January 3530 22 January 3530 23 January 3530 24 January 3530 25 January 3530 26 January 3530 27 January 3530 28 January 3530 29 January 3530 30 January 3530 31 January 3530 1 February 3530 2 February 3530 3 February 3530 4 February 3530 5 February 3530 6 February 3530 7 February 3530 8 February 3530 9 February 3530 10 February 3530 11 February 3530 12 February 3530 13 February 3530 14 February 3530 15 February 3530 16 February 3530
MS 534576 MS 534577 MS 534578 MS 534579 MS 534580 MS 534581 MS 534582 MS 534583 MS 534584 MS 534585 MS 534586 MS 534587 MS 534588 MS 534589 MS 534590 MS 534591 MS 534592 MS 534593 MS 534594 MS 534595 MS 534596 MS 534597 MS 534598 MS 534599 MS 534600 MS 534601 MS 534602 MS 534603 MS 534604 MD 549415 MD 549416 MD 549417 MD 549418 MD 549419 MD 549420 MD 549421 MD 549422 MD 549423 MD 549424 MD 549425 MD 549426 MD 549427 MD 549428 MD 549429 MD 549430 MD 549431 MD 549432 MD 549433 MD 549434 MD 549435 MD 549436 MD 549437 MD 549438 MD 549439 MD 549440 MD 549441 MD 549442 MD 549443 MD 549444