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 -301→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -301 2 Hydra -301 3 Hydra -301 4 Hydra -301 5 Hydra -301 6 Hydra -301 7 Hydra -301 8 Hydra -301 9 Hydra -301 10 Hydra -301 11 Hydra -301 12 Hydra -301 13 Hydra -301 14 Hydra -301 15 Hydra -301 16 Hydra -301 17 Hydra -301 18 Hydra -301 19 Hydra -301 20 Hydra -301 21 Hydra -301 22 Hydra -301 23 Hydra -301 24 Hydra -301 25 Hydra -301 26 Hydra -301 27 Hydra -301 28 Hydra -301 2 Centaurus -300 25 October 1044 26 October 1044 27 October 1044 28 October 1044 29 October 1044 30 October 1044 31 October 1044 1 November 1044 2 November 1044 3 November 1044 4 November 1044 5 November 1044 6 November 1044 7 November 1044 8 November 1044 9 November 1044 10 November 1044 11 November 1044 12 November 1044 13 November 1044 14 November 1044 15 November 1044 16 November 1044 17 November 1044 18 November 1044 19 November 1044 20 November 1044 21 November 1044
MS -348604 MS -348605 MS -348606 MS -348607 MS -348608 MS -348609 MS -348610 MS -348611 MS -348612 MS -348613 MS -348614 MS -348615 MS -348616 MS -348617 MS -348618 MS -348619 MS -348620 MS -348621 MS -348622 MS -348623 MS -348624 MS -348625 MS -348626 MS -348627 MS -348628 MS -348629 MS -348630 MS -348631 MS -348577 MD -358297 MD -358296 MD -358295 MD -358294 MD -358293 MD -358292 MD -358291 MD -358290 MD -358289 MD -358288 MD -358287 MD -358286 MD -358285 MD -358284 MD -358283 MD -358282 MD -358281 MD -358280 MD -358279 MD -358278 MD -358277 MD -358276 MD -358275 MD -358274 MD -358273 MD -358272 MD -358271 MD -358270