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 1256→
SolPhoDeiTerVenJovSat
123456
78910111213
14151617181920
21222324252627
28
1 Hydra 1256 2 Hydra 1256 3 Hydra 1256 4 Hydra 1256 5 Hydra 1256 6 Hydra 1256 7 Hydra 1256 8 Hydra 1256 9 Hydra 1256 10 Hydra 1256 11 Hydra 1256 12 Hydra 1256 13 Hydra 1256 14 Hydra 1256 15 Hydra 1256 16 Hydra 1256 17 Hydra 1256 18 Hydra 1256 19 Hydra 1256 20 Hydra 1256 21 Hydra 1256 22 Hydra 1256 23 Hydra 1256 24 Hydra 1256 25 Hydra 1256 26 Hydra 1256 27 Hydra 1256 28 Hydra 1256 1 Corvus 1256 21 January 3974 22 January 3974 23 January 3974 24 January 3974 25 January 3974 26 January 3974 27 January 3974 28 January 3974 29 January 3974 30 January 3974 31 January 3974 1 February 3974 2 February 3974 3 February 3974 4 February 3974 5 February 3974 6 February 3974 7 February 3974 8 February 3974 9 February 3974 10 February 3974 11 February 3974 12 February 3974 13 February 3974 14 February 3974 15 February 3974 16 February 3974 17 February 3974 18 February 3974 19 February 3974
MS 692364 MS 692365 MS 692366 MS 692367 MS 692368 MS 692369 MS 692370 MS 692371 MS 692372 MS 692373 MS 692374 MS 692375 MS 692376 MS 692377 MS 692378 MS 692379 MS 692380 MS 692381 MS 692382 MS 692383 MS 692384 MS 692385 MS 692386 MS 692387 MS 692388 MS 692389 MS 692390 MS 692391 MS 692392 MD 711586 MD 711587 MD 711588 MD 711589 MD 711590 MD 711591 MD 711592 MD 711593 MD 711594 MD 711595 MD 711596 MD 711597 MD 711598 MD 711599 MD 711600 MD 711601 MD 711602 MD 711603 MD 711604 MD 711605 MD 711606 MD 711607 MD 711608 MD 711609 MD 711610 MD 711611 MD 711612 MD 711613 MD 711614 MD 711615