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 162→
SolPhoDeiTerVenJovSat
123456
78910111213
14151617181920
21222324252627
28
1 Hydra 162 2 Hydra 162 3 Hydra 162 4 Hydra 162 5 Hydra 162 6 Hydra 162 7 Hydra 162 8 Hydra 162 9 Hydra 162 10 Hydra 162 11 Hydra 162 12 Hydra 162 13 Hydra 162 14 Hydra 162 15 Hydra 162 16 Hydra 162 17 Hydra 162 18 Hydra 162 19 Hydra 162 20 Hydra 162 21 Hydra 162 22 Hydra 162 23 Hydra 162 24 Hydra 162 25 Hydra 162 26 Hydra 162 27 Hydra 162 28 Hydra 162 1 Corvus 162 29 October 1915 30 October 1915 31 October 1915 1 November 1915 2 November 1915 3 November 1915 4 November 1915 5 November 1915 6 November 1915 7 November 1915 8 November 1915 9 November 1915 10 November 1915 11 November 1915 12 November 1915 13 November 1915 14 November 1915 15 November 1915 16 November 1915 17 November 1915 18 November 1915 19 November 1915 20 November 1915 21 November 1915 22 November 1915 23 November 1915 24 November 1915 25 November 1915 26 November 1915
MS -39073 MS -39072 MS -39071 MS -39070 MS -39069 MS -39068 MS -39067 MS -39066 MS -39065 MS -39064 MS -39063 MS -39062 MS -39061 MS -39060 MS -39059 MS -39058 MS -39057 MS -39056 MS -39055 MS -39054 MS -39053 MS -39052 MS -39051 MS -39050 MS -39049 MS -39048 MS -39047 MS -39046 MS -39045 MD -40168 MD -40167 MD -40166 MD -40165 MD -40164 MD -40163 MD -40162 MD -40161 MD -40160 MD -40159 MD -40158 MD -40157 MD -40156 MD -40155 MD -40154 MD -40153 MD -40152 MD -40151 MD -40150 MD -40149 MD -40148 MD -40147 MD -40146 MD -40145 MD -40144 MD -40143 MD -40142 MD -40141 MD -40140