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 -548→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -548 2 Hydra -548 3 Hydra -548 4 Hydra -548 5 Hydra -548 6 Hydra -548 7 Hydra -548 8 Hydra -548 9 Hydra -548 10 Hydra -548 11 Hydra -548 12 Hydra -548 13 Hydra -548 14 Hydra -548 15 Hydra -548 16 Hydra -548 17 Hydra -548 18 Hydra -548 19 Hydra -548 20 Hydra -548 21 Hydra -548 22 Hydra -548 23 Hydra -548 24 Hydra -548 25 Hydra -548 26 Hydra -548 27 Hydra -548 28 Hydra -548 2 Centaurus -547 10 February 0580 11 February 0580 12 February 0580 13 February 0580 14 February 0580 15 February 0580 16 February 0580 17 February 0580 18 February 0580 19 February 0580 20 February 0580 21 February 0580 22 February 0580 23 February 0580 24 February 0580 25 February 0580 26 February 0580 27 February 0580 28 February 0580 29 February 0580 1 March 0580 2 March 0580 3 March 0580 4 March 0580 5 March 0580 6 March 0580 7 March 0580 8 March 0580 9 March 0580
MS -513746 MS -513747 MS -513748 MS -513749 MS -513750 MS -513751 MS -513752 MS -513753 MS -513754 MS -513755 MS -513756 MS -513757 MS -513758 MS -513759 MS -513760 MS -513761 MS -513762 MS -513763 MS -513764 MS -513765 MS -513766 MS -513767 MS -513768 MS -513769 MS -513770 MS -513771 MS -513772 MS -513773 MS -513719 MD -528027 MD -528026 MD -528025 MD -528024 MD -528023 MD -528022 MD -528021 MD -528020 MD -528019 MD -528018 MD -528017 MD -528016 MD -528015 MD -528014 MD -528013 MD -528012 MD -528011 MD -528010 MD -528009 MD -528008 MD -528007 MD -528006 MD -528005 MD -528004 MD -528003 MD -528002 MD -528001 MD -528000 MD -527999