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 -608→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -608 2 Hydra -608 3 Hydra -608 4 Hydra -608 5 Hydra -608 6 Hydra -608 7 Hydra -608 8 Hydra -608 9 Hydra -608 10 Hydra -608 11 Hydra -608 12 Hydra -608 13 Hydra -608 14 Hydra -608 15 Hydra -608 16 Hydra -608 17 Hydra -608 18 Hydra -608 19 Hydra -608 20 Hydra -608 21 Hydra -608 22 Hydra -608 23 Hydra -608 24 Hydra -608 25 Hydra -608 26 Hydra -608 27 Hydra -608 28 Hydra -608 2 Centaurus -607 25 March 0467 26 March 0467 27 March 0467 28 March 0467 29 March 0467 30 March 0467 31 March 0467 1 April 0467 2 April 0467 3 April 0467 4 April 0467 5 April 0467 6 April 0467 7 April 0467 8 April 0467 9 April 0467 10 April 0467 11 April 0467 12 April 0467 13 April 0467 14 April 0467 15 April 0467 16 April 0467 17 April 0467 18 April 0467 19 April 0467 20 April 0467 21 April 0467 22 April 0467
MS -553861 MS -553862 MS -553863 MS -553864 MS -553865 MS -553866 MS -553867 MS -553868 MS -553869 MS -553870 MS -553871 MS -553872 MS -553873 MS -553874 MS -553875 MS -553876 MS -553877 MS -553878 MS -553879 MS -553880 MS -553881 MS -553882 MS -553883 MS -553884 MS -553885 MS -553886 MS -553887 MS -553888 MS -553834 MD -569256 MD -569255 MD -569254 MD -569253 MD -569252 MD -569251 MD -569250 MD -569249 MD -569248 MD -569247 MD -569246 MD -569245 MD -569244 MD -569243 MD -569242 MD -569241 MD -569240 MD -569239 MD -569238 MD -569237 MD -569236 MD -569235 MD -569234 MD -569233 MD -569232 MD -569231 MD -569230 MD -569229 MD -569228