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 -118→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -118 2 Hydra -118 3 Hydra -118 4 Hydra -118 5 Hydra -118 6 Hydra -118 7 Hydra -118 8 Hydra -118 9 Hydra -118 10 Hydra -118 11 Hydra -118 12 Hydra -118 13 Hydra -118 14 Hydra -118 15 Hydra -118 16 Hydra -118 17 Hydra -118 18 Hydra -118 19 Hydra -118 20 Hydra -118 21 Hydra -118 22 Hydra -118 23 Hydra -118 24 Hydra -118 25 Hydra -118 26 Hydra -118 27 Hydra -118 28 Hydra -118 2 Centaurus -117 9 February 1389 10 February 1389 11 February 1389 12 February 1389 13 February 1389 14 February 1389 15 February 1389 16 February 1389 17 February 1389 18 February 1389 19 February 1389 20 February 1389 21 February 1389 22 February 1389 23 February 1389 24 February 1389 25 February 1389 26 February 1389 27 February 1389 28 February 1389 1 March 1389 2 March 1389 3 March 1389 4 March 1389 5 March 1389 6 March 1389 7 March 1389 8 March 1389 9 March 1389
MS -226251 MS -226252 MS -226253 MS -226254 MS -226255 MS -226256 MS -226257 MS -226258 MS -226259 MS -226260 MS -226261 MS -226262 MS -226263 MS -226264 MS -226265 MS -226266 MS -226267 MS -226268 MS -226269 MS -226270 MS -226271 MS -226272 MS -226273 MS -226274 MS -226275 MS -226276 MS -226277 MS -226278 MS -226224 MD -232546 MD -232545 MD -232544 MD -232543 MD -232542 MD -232541 MD -232540 MD -232539 MD -232538 MD -232537 MD -232536 MD -232535 MD -232534 MD -232533 MD -232532 MD -232531 MD -232530 MD -232529 MD -232528 MD -232527 MD -232526 MD -232525 MD -232524 MD -232523 MD -232522 MD -232521 MD -232520 MD -232519 MD -232518