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 -456→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -456 2 Hydra -456 3 Hydra -456 4 Hydra -456 5 Hydra -456 6 Hydra -456 7 Hydra -456 8 Hydra -456 9 Hydra -456 10 Hydra -456 11 Hydra -456 12 Hydra -456 13 Hydra -456 14 Hydra -456 15 Hydra -456 16 Hydra -456 17 Hydra -456 18 Hydra -456 19 Hydra -456 20 Hydra -456 21 Hydra -456 22 Hydra -456 23 Hydra -456 24 Hydra -456 25 Hydra -456 26 Hydra -456 27 Hydra -456 28 Hydra -456 2 Centaurus -455 15 March 0753 16 March 0753 17 March 0753 18 March 0753 19 March 0753 20 March 0753 21 March 0753 22 March 0753 23 March 0753 24 March 0753 25 March 0753 26 March 0753 27 March 0753 28 March 0753 29 March 0753 30 March 0753 31 March 0753 1 April 0753 2 April 0753 3 April 0753 4 April 0753 5 April 0753 6 April 0753 7 April 0753 8 April 0753 9 April 0753 10 April 0753 11 April 0753 12 April 0753
MS -452235 MS -452236 MS -452237 MS -452238 MS -452239 MS -452240 MS -452241 MS -452242 MS -452243 MS -452244 MS -452245 MS -452246 MS -452247 MS -452248 MS -452249 MS -452250 MS -452251 MS -452252 MS -452253 MS -452254 MS -452255 MS -452256 MS -452257 MS -452258 MS -452259 MS -452260 MS -452261 MS -452262 MS -452208 MD -464807 MD -464806 MD -464805 MD -464804 MD -464803 MD -464802 MD -464801 MD -464800 MD -464799 MD -464798 MD -464797 MD -464796 MD -464795 MD -464794 MD -464793 MD -464792 MD -464791 MD -464790 MD -464789 MD -464788 MD -464787 MD -464786 MD -464785 MD -464784 MD -464783 MD -464782 MD -464781 MD -464780 MD -464779