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 1361→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 1361 2 Hydra 1361 3 Hydra 1361 4 Hydra 1361 5 Hydra 1361 6 Hydra 1361 7 Hydra 1361 8 Hydra 1361 9 Hydra 1361 10 Hydra 1361 11 Hydra 1361 12 Hydra 1361 13 Hydra 1361 14 Hydra 1361 15 Hydra 1361 16 Hydra 1361 17 Hydra 1361 18 Hydra 1361 19 Hydra 1361 20 Hydra 1361 21 Hydra 1361 22 Hydra 1361 23 Hydra 1361 24 Hydra 1361 25 Hydra 1361 26 Hydra 1361 27 Hydra 1361 28 Hydra 1361 1 Corvus 1361 8 August 4171 9 August 4171 10 August 4171 11 August 4171 12 August 4171 13 August 4171 14 August 4171 15 August 4171 16 August 4171 17 August 4171 18 August 4171 19 August 4171 20 August 4171 21 August 4171 22 August 4171 23 August 4171 24 August 4171 25 August 4171 26 August 4171 27 August 4171 28 August 4171 29 August 4171 30 August 4171 31 August 4171 1 September 4171 2 September 4171 3 September 4171 4 September 4171 5 September 4171 6 September 4171
MS 762566 MS 762567 MS 762568 MS 762569 MS 762570 MS 762571 MS 762572 MS 762573 MS 762574 MS 762575 MS 762576 MS 762577 MS 762578 MS 762579 MS 762580 MS 762581 MS 762582 MS 762583 MS 762584 MS 762585 MS 762586 MS 762587 MS 762588 MS 762589 MS 762590 MS 762591 MS 762592 MS 762593 MS 762594 MD 783738 MD 783739 MD 783740 MD 783741 MD 783742 MD 783743 MD 783744 MD 783745 MD 783746 MD 783747 MD 783748 MD 783749 MD 783750 MD 783751 MD 783752 MD 783753 MD 783754 MD 783755 MD 783756 MD 783757 MD 783758 MD 783759 MD 783760 MD 783761 MD 783762 MD 783763 MD 783764 MD 783765 MD 783766 MD 783767