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 -443→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -443 2 Hydra -443 3 Hydra -443 4 Hydra -443 5 Hydra -443 6 Hydra -443 7 Hydra -443 8 Hydra -443 9 Hydra -443 10 Hydra -443 11 Hydra -443 12 Hydra -443 13 Hydra -443 14 Hydra -443 15 Hydra -443 16 Hydra -443 17 Hydra -443 18 Hydra -443 19 Hydra -443 20 Hydra -443 21 Hydra -443 22 Hydra -443 23 Hydra -443 24 Hydra -443 25 Hydra -443 26 Hydra -443 27 Hydra -443 28 Hydra -443 2 Centaurus -442 27 August 0777 28 August 0777 29 August 0777 30 August 0777 31 August 0777 1 September 0777 2 September 0777 3 September 0777 4 September 0777 5 September 0777 6 September 0777 7 September 0777 8 September 0777 9 September 0777 10 September 0777 11 September 0777 12 September 0777 13 September 0777 14 September 0777 15 September 0777 16 September 0777 17 September 0777 18 September 0777 19 September 0777 20 September 0777 21 September 0777 22 September 0777 23 September 0777 24 September 0777
MS -443545 MS -443546 MS -443547 MS -443548 MS -443549 MS -443550 MS -443551 MS -443552 MS -443553 MS -443554 MS -443555 MS -443556 MS -443557 MS -443558 MS -443559 MS -443560 MS -443561 MS -443562 MS -443563 MS -443564 MS -443565 MS -443566 MS -443567 MS -443568 MS -443569 MS -443570 MS -443571 MS -443572 MS -443518 MD -455876 MD -455875 MD -455874 MD -455873 MD -455872 MD -455871 MD -455870 MD -455869 MD -455868 MD -455867 MD -455866 MD -455865 MD -455864 MD -455863 MD -455862 MD -455861 MD -455860 MD -455859 MD -455858 MD -455857 MD -455856 MD -455855 MD -455854 MD -455853 MD -455852 MD -455851 MD -455850 MD -455849 MD -455848