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 -598→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -598 2 Hydra -598 3 Hydra -598 4 Hydra -598 5 Hydra -598 6 Hydra -598 7 Hydra -598 8 Hydra -598 9 Hydra -598 10 Hydra -598 11 Hydra -598 12 Hydra -598 13 Hydra -598 14 Hydra -598 15 Hydra -598 16 Hydra -598 17 Hydra -598 18 Hydra -598 19 Hydra -598 20 Hydra -598 21 Hydra -598 22 Hydra -598 23 Hydra -598 24 Hydra -598 25 Hydra -598 26 Hydra -598 27 Hydra -598 28 Hydra -598 2 Centaurus -597 15 January 0486 16 January 0486 17 January 0486 18 January 0486 19 January 0486 20 January 0486 21 January 0486 22 January 0486 23 January 0486 24 January 0486 25 January 0486 26 January 0486 27 January 0486 28 January 0486 29 January 0486 30 January 0486 31 January 0486 1 February 0486 2 February 0486 3 February 0486 4 February 0486 5 February 0486 6 February 0486 7 February 0486 8 February 0486 9 February 0486 10 February 0486 11 February 0486
MS -547176 MS -547177 MS -547178 MS -547179 MS -547180 MS -547181 MS -547182 MS -547183 MS -547184 MS -547185 MS -547186 MS -547187 MS -547188 MS -547189 MS -547190 MS -547191 MS -547192 MS -547193 MS -547194 MS -547195 MS -547196 MS -547197 MS -547198 MS -547199 MS -547200 MS -547201 MS -547202 MS -547203 MS -547149 MD -562385 MD -562384 MD -562383 MD -562382 MD -562381 MD -562380 MD -562379 MD -562378 MD -562377 MD -562376 MD -562375 MD -562374 MD -562373 MD -562372 MD -562371 MD -562370 MD -562369 MD -562368 MD -562367 MD -562366 MD -562365 MD -562364 MD -562363 MD -562362 MD -562361 MD -562360 MD -562359 MD -562358