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 -444→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -444 2 Hydra -444 3 Hydra -444 4 Hydra -444 5 Hydra -444 6 Hydra -444 7 Hydra -444 8 Hydra -444 9 Hydra -444 10 Hydra -444 11 Hydra -444 12 Hydra -444 13 Hydra -444 14 Hydra -444 15 Hydra -444 16 Hydra -444 17 Hydra -444 18 Hydra -444 19 Hydra -444 20 Hydra -444 21 Hydra -444 22 Hydra -444 23 Hydra -444 24 Hydra -444 25 Hydra -444 26 Hydra -444 27 Hydra -444 28 Hydra -444 2 Centaurus -443 11 October 0775 12 October 0775 13 October 0775 14 October 0775 15 October 0775 16 October 0775 17 October 0775 18 October 0775 19 October 0775 20 October 0775 21 October 0775 22 October 0775 23 October 0775 24 October 0775 25 October 0775 26 October 0775 27 October 0775 28 October 0775 29 October 0775 30 October 0775 31 October 0775 1 November 0775 2 November 0775 3 November 0775 4 November 0775 5 November 0775 6 November 0775 7 November 0775 8 November 0775
MS -444213 MS -444214 MS -444215 MS -444216 MS -444217 MS -444218 MS -444219 MS -444220 MS -444221 MS -444222 MS -444223 MS -444224 MS -444225 MS -444226 MS -444227 MS -444228 MS -444229 MS -444230 MS -444231 MS -444232 MS -444233 MS -444234 MS -444235 MS -444236 MS -444237 MS -444238 MS -444239 MS -444240 MS -444186 MD -456562 MD -456561 MD -456560 MD -456559 MD -456558 MD -456557 MD -456556 MD -456555 MD -456554 MD -456553 MD -456552 MD -456551 MD -456550 MD -456549 MD -456548 MD -456547 MD -456546 MD -456545 MD -456544 MD -456543 MD -456542 MD -456541 MD -456540 MD -456539 MD -456538 MD -456537 MD -456536 MD -456535 MD -456534