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 721→
SolPhoDeiTerVenJovSat
12
3456789
10111213141516
17181920212223
2425262728
1 Hydra 721 2 Hydra 721 3 Hydra 721 4 Hydra 721 5 Hydra 721 6 Hydra 721 7 Hydra 721 8 Hydra 721 9 Hydra 721 10 Hydra 721 11 Hydra 721 12 Hydra 721 13 Hydra 721 14 Hydra 721 15 Hydra 721 16 Hydra 721 17 Hydra 721 18 Hydra 721 19 Hydra 721 20 Hydra 721 21 Hydra 721 22 Hydra 721 23 Hydra 721 24 Hydra 721 25 Hydra 721 26 Hydra 721 27 Hydra 721 28 Hydra 721 1 Corvus 721 7 July 2967 8 July 2967 9 July 2967 10 July 2967 11 July 2967 12 July 2967 13 July 2967 14 July 2967 15 July 2967 16 July 2967 17 July 2967 18 July 2967 19 July 2967 20 July 2967 21 July 2967 22 July 2967 23 July 2967 24 July 2967 25 July 2967 26 July 2967 27 July 2967 28 July 2967 29 July 2967 30 July 2967 31 July 2967 1 August 2967 2 August 2967 3 August 2967 4 August 2967 5 August 2967
MS 334668 MS 334669 MS 334670 MS 334671 MS 334672 MS 334673 MS 334674 MS 334675 MS 334676 MS 334677 MS 334678 MS 334679 MS 334680 MS 334681 MS 334682 MS 334683 MS 334684 MS 334685 MS 334686 MS 334687 MS 334688 MS 334689 MS 334690 MS 334691 MS 334692 MS 334693 MS 334694 MS 334695 MS 334696 MD 343954 MD 343955 MD 343956 MD 343957 MD 343958 MD 343959 MD 343960 MD 343961 MD 343962 MD 343963 MD 343964 MD 343965 MD 343966 MD 343967 MD 343968 MD 343969 MD 343970 MD 343971 MD 343972 MD 343973 MD 343974 MD 343975 MD 343976 MD 343977 MD 343978 MD 343979 MD 343980 MD 343981 MD 343982 MD 343983