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 -382→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -382 2 Hydra -382 3 Hydra -382 4 Hydra -382 5 Hydra -382 6 Hydra -382 7 Hydra -382 8 Hydra -382 9 Hydra -382 10 Hydra -382 11 Hydra -382 12 Hydra -382 13 Hydra -382 14 Hydra -382 15 Hydra -382 16 Hydra -382 17 Hydra -382 18 Hydra -382 19 Hydra -382 20 Hydra -382 21 Hydra -382 22 Hydra -382 23 Hydra -382 24 Hydra -382 25 Hydra -382 26 Hydra -382 27 Hydra -382 28 Hydra -382 2 Centaurus -381 2 June 0892 3 June 0892 4 June 0892 5 June 0892 6 June 0892 7 June 0892 8 June 0892 9 June 0892 10 June 0892 11 June 0892 12 June 0892 13 June 0892 14 June 0892 15 June 0892 16 June 0892 17 June 0892 18 June 0892 19 June 0892 20 June 0892 21 June 0892 22 June 0892 23 June 0892 24 June 0892 25 June 0892 26 June 0892 27 June 0892 28 June 0892 29 June 0892 30 June 0892
MS -402760 MS -402761 MS -402762 MS -402763 MS -402764 MS -402765 MS -402766 MS -402767 MS -402768 MS -402769 MS -402770 MS -402771 MS -402772 MS -402773 MS -402774 MS -402775 MS -402776 MS -402777 MS -402778 MS -402779 MS -402780 MS -402781 MS -402782 MS -402783 MS -402784 MS -402785 MS -402786 MS -402787 MS -402733 MD -413958 MD -413957 MD -413956 MD -413955 MD -413954 MD -413953 MD -413952 MD -413951 MD -413950 MD -413949 MD -413948 MD -413947 MD -413946 MD -413945 MD -413944 MD -413943 MD -413942 MD -413941 MD -413940 MD -413939 MD -413938 MD -413937 MD -413936 MD -413935 MD -413934 MD -413933 MD -413932 MD -413931 MD -413930