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 1008→
SolPhoDeiTerVenJovSat
1
2345678
9101112131415
16171819202122
232425262728
1 Hydra 1008 2 Hydra 1008 3 Hydra 1008 4 Hydra 1008 5 Hydra 1008 6 Hydra 1008 7 Hydra 1008 8 Hydra 1008 9 Hydra 1008 10 Hydra 1008 11 Hydra 1008 12 Hydra 1008 13 Hydra 1008 14 Hydra 1008 15 Hydra 1008 16 Hydra 1008 17 Hydra 1008 18 Hydra 1008 19 Hydra 1008 20 Hydra 1008 21 Hydra 1008 22 Hydra 1008 23 Hydra 1008 24 Hydra 1008 25 Hydra 1008 26 Hydra 1008 27 Hydra 1008 28 Hydra 1008 1 Corvus 1008 23 June 3507 24 June 3507 25 June 3507 26 June 3507 27 June 3507 28 June 3507 29 June 3507 30 June 3507 1 July 3507 2 July 3507 3 July 3507 4 July 3507 5 July 3507 6 July 3507 7 July 3507 8 July 3507 9 July 3507 10 July 3507 11 July 3507 12 July 3507 13 July 3507 14 July 3507 15 July 3507 16 July 3507 17 July 3507 18 July 3507 19 July 3507 20 July 3507 21 July 3507
MS 526553 MS 526554 MS 526555 MS 526556 MS 526557 MS 526558 MS 526559 MS 526560 MS 526561 MS 526562 MS 526563 MS 526564 MS 526565 MS 526566 MS 526567 MS 526568 MS 526569 MS 526570 MS 526571 MS 526572 MS 526573 MS 526574 MS 526575 MS 526576 MS 526577 MS 526578 MS 526579 MS 526580 MS 526581 MD 541170 MD 541171 MD 541172 MD 541173 MD 541174 MD 541175 MD 541176 MD 541177 MD 541178 MD 541179 MD 541180 MD 541181 MD 541182 MD 541183 MD 541184 MD 541185 MD 541186 MD 541187 MD 541188 MD 541189 MD 541190 MD 541191 MD 541192 MD 541193 MD 541194 MD 541195 MD 541196 MD 541197 MD 541198