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 1290→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 1290 2 Hydra 1290 3 Hydra 1290 4 Hydra 1290 5 Hydra 1290 6 Hydra 1290 7 Hydra 1290 8 Hydra 1290 9 Hydra 1290 10 Hydra 1290 11 Hydra 1290 12 Hydra 1290 13 Hydra 1290 14 Hydra 1290 15 Hydra 1290 16 Hydra 1290 17 Hydra 1290 18 Hydra 1290 19 Hydra 1290 20 Hydra 1290 21 Hydra 1290 22 Hydra 1290 23 Hydra 1290 24 Hydra 1290 25 Hydra 1290 26 Hydra 1290 27 Hydra 1290 28 Hydra 1290 1 Corvus 1290 9 January 4038 10 January 4038 11 January 4038 12 January 4038 13 January 4038 14 January 4038 15 January 4038 16 January 4038 17 January 4038 18 January 4038 19 January 4038 20 January 4038 21 January 4038 22 January 4038 23 January 4038 24 January 4038 25 January 4038 26 January 4038 27 January 4038 28 January 4038 29 January 4038 30 January 4038 31 January 4038 1 February 4038 2 February 4038 3 February 4038 4 February 4038 5 February 4038 6 February 4038 7 February 4038
MS 715096 MS 715097 MS 715098 MS 715099 MS 715100 MS 715101 MS 715102 MS 715103 MS 715104 MS 715105 MS 715106 MS 715107 MS 715108 MS 715109 MS 715110 MS 715111 MS 715112 MS 715113 MS 715114 MS 715115 MS 715116 MS 715117 MS 715118 MS 715119 MS 715120 MS 715121 MS 715122 MS 715123 MS 715124 MD 734950 MD 734951 MD 734952 MD 734953 MD 734954 MD 734955 MD 734956 MD 734957 MD 734958 MD 734959 MD 734960 MD 734961 MD 734962 MD 734963 MD 734964 MD 734965 MD 734966 MD 734967 MD 734968 MD 734969 MD 734970 MD 734971 MD 734972 MD 734973 MD 734974 MD 734975 MD 734976 MD 734977 MD 734978 MD 734979