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 789→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 789 2 Hydra 789 3 Hydra 789 4 Hydra 789 5 Hydra 789 6 Hydra 789 7 Hydra 789 8 Hydra 789 9 Hydra 789 10 Hydra 789 11 Hydra 789 12 Hydra 789 13 Hydra 789 14 Hydra 789 15 Hydra 789 16 Hydra 789 17 Hydra 789 18 Hydra 789 19 Hydra 789 20 Hydra 789 21 Hydra 789 22 Hydra 789 23 Hydra 789 24 Hydra 789 25 Hydra 789 26 Hydra 789 27 Hydra 789 28 Hydra 789 1 Corvus 789 13 June 3095 14 June 3095 15 June 3095 16 June 3095 17 June 3095 18 June 3095 19 June 3095 20 June 3095 21 June 3095 22 June 3095 23 June 3095 24 June 3095 25 June 3095 26 June 3095 27 June 3095 28 June 3095 29 June 3095 30 June 3095 1 July 3095 2 July 3095 3 July 3095 4 July 3095 5 July 3095 6 July 3095 7 July 3095 8 July 3095 9 July 3095 10 July 3095 11 July 3095 12 July 3095
MS 380132 MS 380133 MS 380134 MS 380135 MS 380136 MS 380137 MS 380138 MS 380139 MS 380140 MS 380141 MS 380142 MS 380143 MS 380144 MS 380145 MS 380146 MS 380147 MS 380148 MS 380149 MS 380150 MS 380151 MS 380152 MS 380153 MS 380154 MS 380155 MS 380156 MS 380157 MS 380158 MS 380159 MS 380160 MD 390681 MD 390682 MD 390683 MD 390684 MD 390685 MD 390686 MD 390687 MD 390688 MD 390689 MD 390690 MD 390691 MD 390692 MD 390693 MD 390694 MD 390695 MD 390696 MD 390697 MD 390698 MD 390699 MD 390700 MD 390701 MD 390702 MD 390703 MD 390704 MD 390705 MD 390706 MD 390707 MD 390708 MD 390709 MD 390710