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 -869→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -869 2 Hydra -869 3 Hydra -869 4 Hydra -869 5 Hydra -869 6 Hydra -869 7 Hydra -869 8 Hydra -869 9 Hydra -869 10 Hydra -869 11 Hydra -869 12 Hydra -869 13 Hydra -869 14 Hydra -869 15 Hydra -869 16 Hydra -869 17 Hydra -869 18 Hydra -869 19 Hydra -869 20 Hydra -869 21 Hydra -869 22 Hydra -869 23 Hydra -869 24 Hydra -869 25 Hydra -869 26 Hydra -869 27 Hydra -869 28 Hydra -869 2 Centaurus -868 8 March -0024 9 March -0024 10 March -0024 11 March -0024 12 March -0024 13 March -0024 14 March -0024 15 March -0024 16 March -0024 17 March -0024 18 March -0024 19 March -0024 20 March -0024 21 March -0024 22 March -0024 23 March -0024 24 March -0024 25 March -0024 26 March -0024 27 March -0024 28 March -0024 29 March -0024 30 March -0024 31 March -0024 1 April -0024 2 April -0024 3 April -0024 4 April -0024
MS -728365 MS -728366 MS -728367 MS -728368 MS -728369 MS -728370 MS -728371 MS -728372 MS -728373 MS -728374 MS -728375 MS -728376 MS -728377 MS -728378 MS -728379 MS -728380 MS -728381 MS -728382 MS -728383 MS -728384 MS -728385 MS -728386 MS -728387 MS -728388 MS -728389 MS -728390 MS -728391 MS -728392 MS -728338 MD -748607 MD -748606 MD -748605 MD -748604 MD -748603 MD -748602 MD -748601 MD -748600 MD -748599 MD -748598 MD -748597 MD -748596 MD -748595 MD -748594 MD -748593 MD -748592 MD -748591 MD -748590 MD -748589 MD -748588 MD -748587 MD -748586 MD -748585 MD -748584 MD -748583 MD -748582 MD -748581 MD -748580