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 -604→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -604 2 Hydra -604 3 Hydra -604 4 Hydra -604 5 Hydra -604 6 Hydra -604 7 Hydra -604 8 Hydra -604 9 Hydra -604 10 Hydra -604 11 Hydra -604 12 Hydra -604 13 Hydra -604 14 Hydra -604 15 Hydra -604 16 Hydra -604 17 Hydra -604 18 Hydra -604 19 Hydra -604 20 Hydra -604 21 Hydra -604 22 Hydra -604 23 Hydra -604 24 Hydra -604 25 Hydra -604 26 Hydra -604 27 Hydra -604 28 Hydra -604 2 Centaurus -603 2 October 0474 3 October 0474 4 October 0474 5 October 0474 6 October 0474 7 October 0474 8 October 0474 9 October 0474 10 October 0474 11 October 0474 12 October 0474 13 October 0474 14 October 0474 15 October 0474 16 October 0474 17 October 0474 18 October 0474 19 October 0474 20 October 0474 21 October 0474 22 October 0474 23 October 0474 24 October 0474 25 October 0474 26 October 0474 27 October 0474 28 October 0474 29 October 0474 30 October 0474
MS -551187 MS -551188 MS -551189 MS -551190 MS -551191 MS -551192 MS -551193 MS -551194 MS -551195 MS -551196 MS -551197 MS -551198 MS -551199 MS -551200 MS -551201 MS -551202 MS -551203 MS -551204 MS -551205 MS -551206 MS -551207 MS -551208 MS -551209 MS -551210 MS -551211 MS -551212 MS -551213 MS -551214 MS -551160 MD -566508 MD -566507 MD -566506 MD -566505 MD -566504 MD -566503 MD -566502 MD -566501 MD -566500 MD -566499 MD -566498 MD -566497 MD -566496 MD -566495 MD -566494 MD -566493 MD -566492 MD -566491 MD -566490 MD -566489 MD -566488 MD -566487 MD -566486 MD -566485 MD -566484 MD -566483 MD -566482 MD -566481 MD -566480