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 627→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 627 2 Hydra 627 3 Hydra 627 4 Hydra 627 5 Hydra 627 6 Hydra 627 7 Hydra 627 8 Hydra 627 9 Hydra 627 10 Hydra 627 11 Hydra 627 12 Hydra 627 13 Hydra 627 14 Hydra 627 15 Hydra 627 16 Hydra 627 17 Hydra 627 18 Hydra 627 19 Hydra 627 20 Hydra 627 21 Hydra 627 22 Hydra 627 23 Hydra 627 24 Hydra 627 25 Hydra 627 26 Hydra 627 27 Hydra 627 28 Hydra 627 1 Corvus 627 31 August 2790 1 September 2790 2 September 2790 3 September 2790 4 September 2790 5 September 2790 6 September 2790 7 September 2790 8 September 2790 9 September 2790 10 September 2790 11 September 2790 12 September 2790 13 September 2790 14 September 2790 15 September 2790 16 September 2790 17 September 2790 18 September 2790 19 September 2790 20 September 2790 21 September 2790 22 September 2790 23 September 2790 24 September 2790 25 September 2790 26 September 2790 27 September 2790 28 September 2790
MS 271820 MS 271821 MS 271822 MS 271823 MS 271824 MS 271825 MS 271826 MS 271827 MS 271828 MS 271829 MS 271830 MS 271831 MS 271832 MS 271833 MS 271834 MS 271835 MS 271836 MS 271837 MS 271838 MS 271839 MS 271840 MS 271841 MS 271842 MS 271843 MS 271844 MS 271845 MS 271846 MS 271847 MS 271848 MD 279361 MD 279362 MD 279363 MD 279364 MD 279365 MD 279366 MD 279367 MD 279368 MD 279369 MD 279370 MD 279371 MD 279372 MD 279373 MD 279374 MD 279375 MD 279376 MD 279377 MD 279378 MD 279379 MD 279380 MD 279381 MD 279382 MD 279383 MD 279384 MD 279385 MD 279386 MD 279387 MD 279388 MD 279389