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 127→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 127 2 Hydra 127 3 Hydra 127 4 Hydra 127 5 Hydra 127 6 Hydra 127 7 Hydra 127 8 Hydra 127 9 Hydra 127 10 Hydra 127 11 Hydra 127 12 Hydra 127 13 Hydra 127 14 Hydra 127 15 Hydra 127 16 Hydra 127 17 Hydra 127 18 Hydra 127 19 Hydra 127 20 Hydra 127 21 Hydra 127 22 Hydra 127 23 Hydra 127 24 Hydra 127 25 Hydra 127 26 Hydra 127 27 Hydra 127 28 Hydra 127 1 Corvus 127 21 December 1849 22 December 1849 23 December 1849 24 December 1849 25 December 1849 26 December 1849 27 December 1849 28 December 1849 29 December 1849 30 December 1849 31 December 1849 1 January 1850 2 January 1850 3 January 1850 4 January 1850 5 January 1850 6 January 1850 7 January 1850 8 January 1850 9 January 1850 10 January 1850 11 January 1850 12 January 1850 13 January 1850 14 January 1850 15 January 1850 16 January 1850 17 January 1850 18 January 1850
MS -62475 MS -62474 MS -62473 MS -62472 MS -62471 MS -62470 MS -62469 MS -62468 MS -62467 MS -62466 MS -62465 MS -62464 MS -62463 MS -62462 MS -62461 MS -62460 MS -62459 MS -62458 MS -62457 MS -62456 MS -62455 MS -62454 MS -62453 MS -62452 MS -62451 MS -62450 MS -62449 MS -62448 MS -62447 MD -64220 MD -64219 MD -64218 MD -64217 MD -64216 MD -64215 MD -64214 MD -64213 MD -64212 MD -64211 MD -64210 MD -64209 MD -64208 MD -64207 MD -64206 MD -64205 MD -64204 MD -64203 MD -64202 MD -64201 MD -64200 MD -64199 MD -64198 MD -64197 MD -64196 MD -64195 MD -64194 MD -64193 MD -64192