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 1146→
SolPhoDeiTerVenJovSat
12
3456789
10111213141516
17181920212223
2425262728
1 Hydra 1146 2 Hydra 1146 3 Hydra 1146 4 Hydra 1146 5 Hydra 1146 6 Hydra 1146 7 Hydra 1146 8 Hydra 1146 9 Hydra 1146 10 Hydra 1146 11 Hydra 1146 12 Hydra 1146 13 Hydra 1146 14 Hydra 1146 15 Hydra 1146 16 Hydra 1146 17 Hydra 1146 18 Hydra 1146 19 Hydra 1146 20 Hydra 1146 21 Hydra 1146 22 Hydra 1146 23 Hydra 1146 24 Hydra 1146 25 Hydra 1146 26 Hydra 1146 27 Hydra 1146 28 Hydra 1146 1 Corvus 1146 7 February 3767 8 February 3767 9 February 3767 10 February 3767 11 February 3767 12 February 3767 13 February 3767 14 February 3767 15 February 3767 16 February 3767 17 February 3767 18 February 3767 19 February 3767 20 February 3767 21 February 3767 22 February 3767 23 February 3767 24 February 3767 25 February 3767 26 February 3767 27 February 3767 28 February 3767 1 March 3767 2 March 3767 3 March 3767 4 March 3767 5 March 3767 6 March 3767 7 March 3767 8 March 3767
MS 618819 MS 618820 MS 618821 MS 618822 MS 618823 MS 618824 MS 618825 MS 618826 MS 618827 MS 618828 MS 618829 MS 618830 MS 618831 MS 618832 MS 618833 MS 618834 MS 618835 MS 618836 MS 618837 MS 618838 MS 618839 MS 618840 MS 618841 MS 618842 MS 618843 MS 618844 MS 618845 MS 618846 MS 618847 MD 635998 MD 635999 MD 636000 MD 636001 MD 636002 MD 636003 MD 636004 MD 636005 MD 636006 MD 636007 MD 636008 MD 636009 MD 636010 MD 636011 MD 636012 MD 636013 MD 636014 MD 636015 MD 636016 MD 636017 MD 636018 MD 636019 MD 636020 MD 636021 MD 636022 MD 636023 MD 636024 MD 636025 MD 636026 MD 636027