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 378→
SolPhoDeiTerVenJovSat
1
2345678
9101112131415
16171819202122
232425262728
1 Hydra 378 2 Hydra 378 3 Hydra 378 4 Hydra 378 5 Hydra 378 6 Hydra 378 7 Hydra 378 8 Hydra 378 9 Hydra 378 10 Hydra 378 11 Hydra 378 12 Hydra 378 13 Hydra 378 14 Hydra 378 15 Hydra 378 16 Hydra 378 17 Hydra 378 18 Hydra 378 19 Hydra 378 20 Hydra 378 21 Hydra 378 22 Hydra 378 23 Hydra 378 24 Hydra 378 25 Hydra 378 26 Hydra 378 27 Hydra 378 28 Hydra 378 1 Corvus 378 15 March 2322 16 March 2322 17 March 2322 18 March 2322 19 March 2322 20 March 2322 21 March 2322 22 March 2322 23 March 2322 24 March 2322 25 March 2322 26 March 2322 27 March 2322 28 March 2322 29 March 2322 30 March 2322 31 March 2322 1 April 2322 2 April 2322 3 April 2322 4 April 2322 5 April 2322 6 April 2322 7 April 2322 8 April 2322 9 April 2322 10 April 2322 11 April 2322 12 April 2322 13 April 2322
MS 105342 MS 105343 MS 105344 MS 105345 MS 105346 MS 105347 MS 105348 MS 105349 MS 105350 MS 105351 MS 105352 MS 105353 MS 105354 MS 105355 MS 105356 MS 105357 MS 105358 MS 105359 MS 105360 MS 105361 MS 105362 MS 105363 MS 105364 MS 105365 MS 105366 MS 105367 MS 105368 MS 105369 MS 105370 MD 108258 MD 108259 MD 108260 MD 108261 MD 108262 MD 108263 MD 108264 MD 108265 MD 108266 MD 108267 MD 108268 MD 108269 MD 108270 MD 108271 MD 108272 MD 108273 MD 108274 MD 108275 MD 108276 MD 108277 MD 108278 MD 108279 MD 108280 MD 108281 MD 108282 MD 108283 MD 108284 MD 108285 MD 108286 MD 108287