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 515→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 515 2 Hydra 515 3 Hydra 515 4 Hydra 515 5 Hydra 515 6 Hydra 515 7 Hydra 515 8 Hydra 515 9 Hydra 515 10 Hydra 515 11 Hydra 515 12 Hydra 515 13 Hydra 515 14 Hydra 515 15 Hydra 515 16 Hydra 515 17 Hydra 515 18 Hydra 515 19 Hydra 515 20 Hydra 515 21 Hydra 515 22 Hydra 515 23 Hydra 515 24 Hydra 515 25 Hydra 515 26 Hydra 515 27 Hydra 515 28 Hydra 515 1 Corvus 515 13 December 2579 14 December 2579 15 December 2579 16 December 2579 17 December 2579 18 December 2579 19 December 2579 20 December 2579 21 December 2579 22 December 2579 23 December 2579 24 December 2579 25 December 2579 26 December 2579 27 December 2579 28 December 2579 29 December 2579 30 December 2579 31 December 2579 1 January 2580 2 January 2580 3 January 2580 4 January 2580 5 January 2580 6 January 2580 7 January 2580 8 January 2580 9 January 2580 10 January 2580
MS 196938 MS 196939 MS 196940 MS 196941 MS 196942 MS 196943 MS 196944 MS 196945 MS 196946 MS 196947 MS 196948 MS 196949 MS 196950 MS 196951 MS 196952 MS 196953 MS 196954 MS 196955 MS 196956 MS 196957 MS 196958 MS 196959 MS 196960 MS 196961 MS 196962 MS 196963 MS 196964 MS 196965 MS 196966 MD 202399 MD 202400 MD 202401 MD 202402 MD 202403 MD 202404 MD 202405 MD 202406 MD 202407 MD 202408 MD 202409 MD 202410 MD 202411 MD 202412 MD 202413 MD 202414 MD 202415 MD 202416 MD 202417 MD 202418 MD 202419 MD 202420 MD 202421 MD 202422 MD 202423 MD 202424 MD 202425 MD 202426 MD 202427