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 -383→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -383 2 Hydra -383 3 Hydra -383 4 Hydra -383 5 Hydra -383 6 Hydra -383 7 Hydra -383 8 Hydra -383 9 Hydra -383 10 Hydra -383 11 Hydra -383 12 Hydra -383 13 Hydra -383 14 Hydra -383 15 Hydra -383 16 Hydra -383 17 Hydra -383 18 Hydra -383 19 Hydra -383 20 Hydra -383 21 Hydra -383 22 Hydra -383 23 Hydra -383 24 Hydra -383 25 Hydra -383 26 Hydra -383 27 Hydra -383 28 Hydra -383 2 Centaurus -382 16 July 0890 17 July 0890 18 July 0890 19 July 0890 20 July 0890 21 July 0890 22 July 0890 23 July 0890 24 July 0890 25 July 0890 26 July 0890 27 July 0890 28 July 0890 29 July 0890 30 July 0890 31 July 0890 1 August 0890 2 August 0890 3 August 0890 4 August 0890 5 August 0890 6 August 0890 7 August 0890 8 August 0890 9 August 0890 10 August 0890 11 August 0890 12 August 0890
MS -403429 MS -403430 MS -403431 MS -403432 MS -403433 MS -403434 MS -403435 MS -403436 MS -403437 MS -403438 MS -403439 MS -403440 MS -403441 MS -403442 MS -403443 MS -403444 MS -403445 MS -403446 MS -403447 MS -403448 MS -403449 MS -403450 MS -403451 MS -403452 MS -403453 MS -403454 MS -403455 MS -403456 MS -403402 MD -414645 MD -414644 MD -414643 MD -414642 MD -414641 MD -414640 MD -414639 MD -414638 MD -414637 MD -414636 MD -414635 MD -414634 MD -414633 MD -414632 MD -414631 MD -414630 MD -414629 MD -414628 MD -414627 MD -414626 MD -414625 MD -414624 MD -414623 MD -414622 MD -414621 MD -414620 MD -414619 MD -414618