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 -386→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -386 2 Hydra -386 3 Hydra -386 4 Hydra -386 5 Hydra -386 6 Hydra -386 7 Hydra -386 8 Hydra -386 9 Hydra -386 10 Hydra -386 11 Hydra -386 12 Hydra -386 13 Hydra -386 14 Hydra -386 15 Hydra -386 16 Hydra -386 17 Hydra -386 18 Hydra -386 19 Hydra -386 20 Hydra -386 21 Hydra -386 22 Hydra -386 23 Hydra -386 24 Hydra -386 25 Hydra -386 26 Hydra -386 27 Hydra -386 28 Hydra -386 2 Centaurus -385 23 November 0884 24 November 0884 25 November 0884 26 November 0884 27 November 0884 28 November 0884 29 November 0884 30 November 0884 1 December 0884 2 December 0884 3 December 0884 4 December 0884 5 December 0884 6 December 0884 7 December 0884 8 December 0884 9 December 0884 10 December 0884 11 December 0884 12 December 0884 13 December 0884 14 December 0884 15 December 0884 16 December 0884 17 December 0884 18 December 0884 19 December 0884 20 December 0884 21 December 0884
MS -405434 MS -405435 MS -405436 MS -405437 MS -405438 MS -405439 MS -405440 MS -405441 MS -405442 MS -405443 MS -405444 MS -405445 MS -405446 MS -405447 MS -405448 MS -405449 MS -405450 MS -405451 MS -405452 MS -405453 MS -405454 MS -405455 MS -405456 MS -405457 MS -405458 MS -405459 MS -405460 MS -405461 MS -405407 MD -416706 MD -416705 MD -416704 MD -416703 MD -416702 MD -416701 MD -416700 MD -416699 MD -416698 MD -416697 MD -416696 MD -416695 MD -416694 MD -416693 MD -416692 MD -416691 MD -416690 MD -416689 MD -416688 MD -416687 MD -416686 MD -416685 MD -416684 MD -416683 MD -416682 MD -416681 MD -416680 MD -416679 MD -416678