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 -342→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -342 2 Hydra -342 3 Hydra -342 4 Hydra -342 5 Hydra -342 6 Hydra -342 7 Hydra -342 8 Hydra -342 9 Hydra -342 10 Hydra -342 11 Hydra -342 12 Hydra -342 13 Hydra -342 14 Hydra -342 15 Hydra -342 16 Hydra -342 17 Hydra -342 18 Hydra -342 19 Hydra -342 20 Hydra -342 21 Hydra -342 22 Hydra -342 23 Hydra -342 24 Hydra -342 25 Hydra -342 26 Hydra -342 27 Hydra -342 28 Hydra -342 2 Centaurus -341 5 September 0967 6 September 0967 7 September 0967 8 September 0967 9 September 0967 10 September 0967 11 September 0967 12 September 0967 13 September 0967 14 September 0967 15 September 0967 16 September 0967 17 September 0967 18 September 0967 19 September 0967 20 September 0967 21 September 0967 22 September 0967 23 September 0967 24 September 0967 25 September 0967 26 September 0967 27 September 0967 28 September 0967 29 September 0967 30 September 0967 1 October 0967 2 October 0967 3 October 0967
MS -376016 MS -376017 MS -376018 MS -376019 MS -376020 MS -376021 MS -376022 MS -376023 MS -376024 MS -376025 MS -376026 MS -376027 MS -376028 MS -376029 MS -376030 MS -376031 MS -376032 MS -376033 MS -376034 MS -376035 MS -376036 MS -376037 MS -376038 MS -376039 MS -376040 MS -376041 MS -376042 MS -376043 MS -375989 MD -386471 MD -386470 MD -386469 MD -386468 MD -386467 MD -386466 MD -386465 MD -386464 MD -386463 MD -386462 MD -386461 MD -386460 MD -386459 MD -386458 MD -386457 MD -386456 MD -386455 MD -386454 MD -386453 MD -386452 MD -386451 MD -386450 MD -386449 MD -386448 MD -386447 MD -386446 MD -386445 MD -386444 MD -386443