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 720→
SolPhoDeiTerVenJovSat
123456
78910111213
14151617181920
21222324252627
28
1 Hydra 720 2 Hydra 720 3 Hydra 720 4 Hydra 720 5 Hydra 720 6 Hydra 720 7 Hydra 720 8 Hydra 720 9 Hydra 720 10 Hydra 720 11 Hydra 720 12 Hydra 720 13 Hydra 720 14 Hydra 720 15 Hydra 720 16 Hydra 720 17 Hydra 720 18 Hydra 720 19 Hydra 720 20 Hydra 720 21 Hydra 720 22 Hydra 720 23 Hydra 720 24 Hydra 720 25 Hydra 720 26 Hydra 720 27 Hydra 720 28 Hydra 720 1 Corvus 720 19 August 2965 20 August 2965 21 August 2965 22 August 2965 23 August 2965 24 August 2965 25 August 2965 26 August 2965 27 August 2965 28 August 2965 29 August 2965 30 August 2965 31 August 2965 1 September 2965 2 September 2965 3 September 2965 4 September 2965 5 September 2965 6 September 2965 7 September 2965 8 September 2965 9 September 2965 10 September 2965 11 September 2965 12 September 2965 13 September 2965 14 September 2965 15 September 2965 16 September 2965 17 September 2965
MS 333999 MS 334000 MS 334001 MS 334002 MS 334003 MS 334004 MS 334005 MS 334006 MS 334007 MS 334008 MS 334009 MS 334010 MS 334011 MS 334012 MS 334013 MS 334014 MS 334015 MS 334016 MS 334017 MS 334018 MS 334019 MS 334020 MS 334021 MS 334022 MS 334023 MS 334024 MS 334025 MS 334026 MS 334027 MD 343267 MD 343268 MD 343269 MD 343270 MD 343271 MD 343272 MD 343273 MD 343274 MD 343275 MD 343276 MD 343277 MD 343278 MD 343279 MD 343280 MD 343281 MD 343282 MD 343283 MD 343284 MD 343285 MD 343286 MD 343287 MD 343288 MD 343289 MD 343290 MD 343291 MD 343292 MD 343293 MD 343294 MD 343295 MD 343296