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 203→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 203 2 Hydra 203 3 Hydra 203 4 Hydra 203 5 Hydra 203 6 Hydra 203 7 Hydra 203 8 Hydra 203 9 Hydra 203 10 Hydra 203 11 Hydra 203 12 Hydra 203 13 Hydra 203 14 Hydra 203 15 Hydra 203 16 Hydra 203 17 Hydra 203 18 Hydra 203 19 Hydra 203 20 Hydra 203 21 Hydra 203 22 Hydra 203 23 Hydra 203 24 Hydra 203 25 Hydra 203 26 Hydra 203 27 Hydra 203 28 Hydra 203 1 Corvus 203 15 December 1992 16 December 1992 17 December 1992 18 December 1992 19 December 1992 20 December 1992 21 December 1992 22 December 1992 23 December 1992 24 December 1992 25 December 1992 26 December 1992 27 December 1992 28 December 1992 29 December 1992 30 December 1992 31 December 1992 1 January 1993 2 January 1993 3 January 1993 4 January 1993 5 January 1993 6 January 1993 7 January 1993 8 January 1993 9 January 1993 10 January 1993 11 January 1993 12 January 1993 13 January 1993
MS -11662 MS -11661 MS -11660 MS -11659 MS -11658 MS -11657 MS -11656 MS -11655 MS -11654 MS -11653 MS -11652 MS -11651 MS -11650 MS -11649 MS -11648 MS -11647 MS -11646 MS -11645 MS -11644 MS -11643 MS -11642 MS -11641 MS -11640 MS -11639 MS -11638 MS -11637 MS -11636 MS -11635 MS -11634 MD -11996 MD -11995 MD -11994 MD -11993 MD -11992 MD -11991 MD -11990 MD -11989 MD -11988 MD -11987 MD -11986 MD -11985 MD -11984 MD -11983 MD -11982 MD -11981 MD -11980 MD -11979 MD -11978 MD -11977 MD -11976 MD -11975 MD -11974 MD -11973 MD -11972 MD -11971 MD -11970 MD -11969 MD -11968 MD -11967