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 -462→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -462 2 Hydra -462 3 Hydra -462 4 Hydra -462 5 Hydra -462 6 Hydra -462 7 Hydra -462 8 Hydra -462 9 Hydra -462 10 Hydra -462 11 Hydra -462 12 Hydra -462 13 Hydra -462 14 Hydra -462 15 Hydra -462 16 Hydra -462 17 Hydra -462 18 Hydra -462 19 Hydra -462 20 Hydra -462 21 Hydra -462 22 Hydra -462 23 Hydra -462 24 Hydra -462 25 Hydra -462 26 Hydra -462 27 Hydra -462 28 Hydra -462 2 Centaurus -461 29 November 0741 30 November 0741 1 December 0741 2 December 0741 3 December 0741 4 December 0741 5 December 0741 6 December 0741 7 December 0741 8 December 0741 9 December 0741 10 December 0741 11 December 0741 12 December 0741 13 December 0741 14 December 0741 15 December 0741 16 December 0741 17 December 0741 18 December 0741 19 December 0741 20 December 0741 21 December 0741 22 December 0741 23 December 0741 24 December 0741 25 December 0741 26 December 0741 27 December 0741
MS -456247 MS -456248 MS -456249 MS -456250 MS -456251 MS -456252 MS -456253 MS -456254 MS -456255 MS -456256 MS -456257 MS -456258 MS -456259 MS -456260 MS -456261 MS -456262 MS -456263 MS -456264 MS -456265 MS -456266 MS -456267 MS -456268 MS -456269 MS -456270 MS -456271 MS -456272 MS -456273 MS -456274 MS -456220 MD -468931 MD -468930 MD -468929 MD -468928 MD -468927 MD -468926 MD -468925 MD -468924 MD -468923 MD -468922 MD -468921 MD -468920 MD -468919 MD -468918 MD -468917 MD -468916 MD -468915 MD -468914 MD -468913 MD -468912 MD -468911 MD -468910 MD -468909 MD -468908 MD -468907 MD -468906 MD -468905 MD -468904 MD -468903