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 117→
SolPhoDeiTerVenJovSat
1
2345678
9101112131415
16171819202122
232425262728
1 Hydra 117 2 Hydra 117 3 Hydra 117 4 Hydra 117 5 Hydra 117 6 Hydra 117 7 Hydra 117 8 Hydra 117 9 Hydra 117 10 Hydra 117 11 Hydra 117 12 Hydra 117 13 Hydra 117 14 Hydra 117 15 Hydra 117 16 Hydra 117 17 Hydra 117 18 Hydra 117 19 Hydra 117 20 Hydra 117 21 Hydra 117 22 Hydra 117 23 Hydra 117 24 Hydra 117 25 Hydra 117 26 Hydra 117 27 Hydra 117 28 Hydra 117 1 Corvus 117 27 February 1831 28 February 1831 1 March 1831 2 March 1831 3 March 1831 4 March 1831 5 March 1831 6 March 1831 7 March 1831 8 March 1831 9 March 1831 10 March 1831 11 March 1831 12 March 1831 13 March 1831 14 March 1831 15 March 1831 16 March 1831 17 March 1831 18 March 1831 19 March 1831 20 March 1831 21 March 1831 22 March 1831 23 March 1831 24 March 1831 25 March 1831 26 March 1831 27 March 1831 28 March 1831
MS -69161 MS -69160 MS -69159 MS -69158 MS -69157 MS -69156 MS -69155 MS -69154 MS -69153 MS -69152 MS -69151 MS -69150 MS -69149 MS -69148 MS -69147 MS -69146 MS -69145 MS -69144 MS -69143 MS -69142 MS -69141 MS -69140 MS -69139 MS -69138 MS -69137 MS -69136 MS -69135 MS -69134 MS -69133 MD -71092 MD -71091 MD -71090 MD -71089 MD -71088 MD -71087 MD -71086 MD -71085 MD -71084 MD -71083 MD -71082 MD -71081 MD -71080 MD -71079 MD -71078 MD -71077 MD -71076 MD -71075 MD -71074 MD -71073 MD -71072 MD -71071 MD -71070 MD -71069 MD -71068 MD -71067 MD -71066 MD -71065 MD -71064 MD -71063