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 640→
SolPhoDeiTerVenJovSat
123456
78910111213
14151617181920
21222324252627
28
1 Hydra 640 2 Hydra 640 3 Hydra 640 4 Hydra 640 5 Hydra 640 6 Hydra 640 7 Hydra 640 8 Hydra 640 9 Hydra 640 10 Hydra 640 11 Hydra 640 12 Hydra 640 13 Hydra 640 14 Hydra 640 15 Hydra 640 16 Hydra 640 17 Hydra 640 18 Hydra 640 19 Hydra 640 20 Hydra 640 21 Hydra 640 22 Hydra 640 23 Hydra 640 24 Hydra 640 25 Hydra 640 26 Hydra 640 27 Hydra 640 28 Hydra 640 1 Corvus 640 14 February 2815 15 February 2815 16 February 2815 17 February 2815 18 February 2815 19 February 2815 20 February 2815 21 February 2815 22 February 2815 23 February 2815 24 February 2815 25 February 2815 26 February 2815 27 February 2815 28 February 2815 1 March 2815 2 March 2815 3 March 2815 4 March 2815 5 March 2815 6 March 2815 7 March 2815 8 March 2815 9 March 2815 10 March 2815 11 March 2815 12 March 2815 13 March 2815 14 March 2815 15 March 2815
MS 280512 MS 280513 MS 280514 MS 280515 MS 280516 MS 280517 MS 280518 MS 280519 MS 280520 MS 280521 MS 280522 MS 280523 MS 280524 MS 280525 MS 280526 MS 280527 MS 280528 MS 280529 MS 280530 MS 280531 MS 280532 MS 280533 MS 280534 MS 280535 MS 280536 MS 280537 MS 280538 MS 280539 MS 280540 MD 288294 MD 288295 MD 288296 MD 288297 MD 288298 MD 288299 MD 288300 MD 288301 MD 288302 MD 288303 MD 288304 MD 288305 MD 288306 MD 288307 MD 288308 MD 288309 MD 288310 MD 288311 MD 288312 MD 288313 MD 288314 MD 288315 MD 288316 MD 288317 MD 288318 MD 288319 MD 288320 MD 288321 MD 288322 MD 288323