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 678→
SolPhoDeiTerVenJovSat
12
3456789
10111213141516
17181920212223
2425262728
1 Hydra 678 2 Hydra 678 3 Hydra 678 4 Hydra 678 5 Hydra 678 6 Hydra 678 7 Hydra 678 8 Hydra 678 9 Hydra 678 10 Hydra 678 11 Hydra 678 12 Hydra 678 13 Hydra 678 14 Hydra 678 15 Hydra 678 16 Hydra 678 17 Hydra 678 18 Hydra 678 19 Hydra 678 20 Hydra 678 21 Hydra 678 22 Hydra 678 23 Hydra 678 24 Hydra 678 25 Hydra 678 26 Hydra 678 27 Hydra 678 28 Hydra 678 1 Corvus 678 13 August 2886 14 August 2886 15 August 2886 16 August 2886 17 August 2886 18 August 2886 19 August 2886 20 August 2886 21 August 2886 22 August 2886 23 August 2886 24 August 2886 25 August 2886 26 August 2886 27 August 2886 28 August 2886 29 August 2886 30 August 2886 31 August 2886 1 September 2886 2 September 2886 3 September 2886 4 September 2886 5 September 2886 6 September 2886 7 September 2886 8 September 2886 9 September 2886 10 September 2886 11 September 2886
MS 305919 MS 305920 MS 305921 MS 305922 MS 305923 MS 305924 MS 305925 MS 305926 MS 305927 MS 305928 MS 305929 MS 305930 MS 305931 MS 305932 MS 305933 MS 305934 MS 305935 MS 305936 MS 305937 MS 305938 MS 305939 MS 305940 MS 305941 MS 305942 MS 305943 MS 305944 MS 305945 MS 305946 MS 305947 MD 314407 MD 314408 MD 314409 MD 314410 MD 314411 MD 314412 MD 314413 MD 314414 MD 314415 MD 314416 MD 314417 MD 314418 MD 314419 MD 314420 MD 314421 MD 314422 MD 314423 MD 314424 MD 314425 MD 314426 MD 314427 MD 314428 MD 314429 MD 314430 MD 314431 MD 314432 MD 314433 MD 314434 MD 314435 MD 314436