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 1113→
SolPhoDeiTerVenJovSat
12
3456789
10111213141516
17181920212223
2425262728
1 Hydra 1113 2 Hydra 1113 3 Hydra 1113 4 Hydra 1113 5 Hydra 1113 6 Hydra 1113 7 Hydra 1113 8 Hydra 1113 9 Hydra 1113 10 Hydra 1113 11 Hydra 1113 12 Hydra 1113 13 Hydra 1113 14 Hydra 1113 15 Hydra 1113 16 Hydra 1113 17 Hydra 1113 18 Hydra 1113 19 Hydra 1113 20 Hydra 1113 21 Hydra 1113 22 Hydra 1113 23 Hydra 1113 24 Hydra 1113 25 Hydra 1113 26 Hydra 1113 27 Hydra 1113 28 Hydra 1113 1 Corvus 1113 7 January 3705 8 January 3705 9 January 3705 10 January 3705 11 January 3705 12 January 3705 13 January 3705 14 January 3705 15 January 3705 16 January 3705 17 January 3705 18 January 3705 19 January 3705 20 January 3705 21 January 3705 22 January 3705 23 January 3705 24 January 3705 25 January 3705 26 January 3705 27 January 3705 28 January 3705 29 January 3705 30 January 3705 31 January 3705 1 February 3705 2 February 3705 3 February 3705 4 February 3705
MS 596755 MS 596756 MS 596757 MS 596758 MS 596759 MS 596760 MS 596761 MS 596762 MS 596763 MS 596764 MS 596765 MS 596766 MS 596767 MS 596768 MS 596769 MS 596770 MS 596771 MS 596772 MS 596773 MS 596774 MS 596775 MS 596776 MS 596777 MS 596778 MS 596779 MS 596780 MS 596781 MS 596782 MS 596783 MD 613322 MD 613323 MD 613324 MD 613325 MD 613326 MD 613327 MD 613328 MD 613329 MD 613330 MD 613331 MD 613332 MD 613333 MD 613334 MD 613335 MD 613336 MD 613337 MD 613338 MD 613339 MD 613340 MD 613341 MD 613342 MD 613343 MD 613344 MD 613345 MD 613346 MD 613347 MD 613348 MD 613349 MD 613350