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 -208→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -208 2 Hydra -208 3 Hydra -208 4 Hydra -208 5 Hydra -208 6 Hydra -208 7 Hydra -208 8 Hydra -208 9 Hydra -208 10 Hydra -208 11 Hydra -208 12 Hydra -208 13 Hydra -208 14 Hydra -208 15 Hydra -208 16 Hydra -208 17 Hydra -208 18 Hydra -208 19 Hydra -208 20 Hydra -208 21 Hydra -208 22 Hydra -208 23 Hydra -208 24 Hydra -208 25 Hydra -208 26 Hydra -208 27 Hydra -208 28 Hydra -208 2 Centaurus -207 15 October 1219 16 October 1219 17 October 1219 18 October 1219 19 October 1219 20 October 1219 21 October 1219 22 October 1219 23 October 1219 24 October 1219 25 October 1219 26 October 1219 27 October 1219 28 October 1219 29 October 1219 30 October 1219 31 October 1219 1 November 1219 2 November 1219 3 November 1219 4 November 1219 5 November 1219 6 November 1219 7 November 1219 8 November 1219 9 November 1219 10 November 1219 11 November 1219 12 November 1219
MS -286424 MS -286425 MS -286426 MS -286427 MS -286428 MS -286429 MS -286430 MS -286431 MS -286432 MS -286433 MS -286434 MS -286435 MS -286436 MS -286437 MS -286438 MS -286439 MS -286440 MS -286441 MS -286442 MS -286443 MS -286444 MS -286445 MS -286446 MS -286447 MS -286448 MS -286449 MS -286450 MS -286451 MS -286397 MD -294390 MD -294389 MD -294388 MD -294387 MD -294386 MD -294385 MD -294384 MD -294383 MD -294382 MD -294381 MD -294380 MD -294379 MD -294378 MD -294377 MD -294376 MD -294375 MD -294374 MD -294373 MD -294372 MD -294371 MD -294370 MD -294369 MD -294368 MD -294367 MD -294366 MD -294365 MD -294364 MD -294363 MD -294362