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 -352→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -352 2 Hydra -352 3 Hydra -352 4 Hydra -352 5 Hydra -352 6 Hydra -352 7 Hydra -352 8 Hydra -352 9 Hydra -352 10 Hydra -352 11 Hydra -352 12 Hydra -352 13 Hydra -352 14 Hydra -352 15 Hydra -352 16 Hydra -352 17 Hydra -352 18 Hydra -352 19 Hydra -352 20 Hydra -352 21 Hydra -352 22 Hydra -352 23 Hydra -352 24 Hydra -352 25 Hydra -352 26 Hydra -352 27 Hydra -352 28 Hydra -352 2 Centaurus -351 11 November 0948 12 November 0948 13 November 0948 14 November 0948 15 November 0948 16 November 0948 17 November 0948 18 November 0948 19 November 0948 20 November 0948 21 November 0948 22 November 0948 23 November 0948 24 November 0948 25 November 0948 26 November 0948 27 November 0948 28 November 0948 29 November 0948 30 November 0948 1 December 0948 2 December 0948 3 December 0948 4 December 0948 5 December 0948 6 December 0948 7 December 0948 8 December 0948 9 December 0948
MS -382702 MS -382703 MS -382704 MS -382705 MS -382706 MS -382707 MS -382708 MS -382709 MS -382710 MS -382711 MS -382712 MS -382713 MS -382714 MS -382715 MS -382716 MS -382717 MS -382718 MS -382719 MS -382720 MS -382721 MS -382722 MS -382723 MS -382724 MS -382725 MS -382726 MS -382727 MS -382728 MS -382729 MS -382675 MD -393343 MD -393342 MD -393341 MD -393340 MD -393339 MD -393338 MD -393337 MD -393336 MD -393335 MD -393334 MD -393333 MD -393332 MD -393331 MD -393330 MD -393329 MD -393328 MD -393327 MD -393326 MD -393325 MD -393324 MD -393323 MD -393322 MD -393321 MD -393320 MD -393319 MD -393318 MD -393317 MD -393316 MD -393315