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 -87→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -87 2 Hydra -87 3 Hydra -87 4 Hydra -87 5 Hydra -87 6 Hydra -87 7 Hydra -87 8 Hydra -87 9 Hydra -87 10 Hydra -87 11 Hydra -87 12 Hydra -87 13 Hydra -87 14 Hydra -87 15 Hydra -87 16 Hydra -87 17 Hydra -87 18 Hydra -87 19 Hydra -87 20 Hydra -87 21 Hydra -87 22 Hydra -87 23 Hydra -87 24 Hydra -87 25 Hydra -87 26 Hydra -87 27 Hydra -87 28 Hydra -87 2 Centaurus -86 8 June 1447 9 June 1447 10 June 1447 11 June 1447 12 June 1447 13 June 1447 14 June 1447 15 June 1447 16 June 1447 17 June 1447 18 June 1447 19 June 1447 20 June 1447 21 June 1447 22 June 1447 23 June 1447 24 June 1447 25 June 1447 26 June 1447 27 June 1447 28 June 1447 29 June 1447 30 June 1447 1 July 1447 2 July 1447 3 July 1447 4 July 1447 5 July 1447 6 July 1447
MS -205525 MS -205526 MS -205527 MS -205528 MS -205529 MS -205530 MS -205531 MS -205532 MS -205533 MS -205534 MS -205535 MS -205536 MS -205537 MS -205538 MS -205539 MS -205540 MS -205541 MS -205542 MS -205543 MS -205544 MS -205545 MS -205546 MS -205547 MS -205548 MS -205549 MS -205550 MS -205551 MS -205552 MS -205498 MD -211244 MD -211243 MD -211242 MD -211241 MD -211240 MD -211239 MD -211238 MD -211237 MD -211236 MD -211235 MD -211234 MD -211233 MD -211232 MD -211231 MD -211230 MD -211229 MD -211228 MD -211227 MD -211226 MD -211225 MD -211224 MD -211223 MD -211222 MD -211221 MD -211220 MD -211219 MD -211218 MD -211217 MD -211216