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 826→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 826 2 Hydra 826 3 Hydra 826 4 Hydra 826 5 Hydra 826 6 Hydra 826 7 Hydra 826 8 Hydra 826 9 Hydra 826 10 Hydra 826 11 Hydra 826 12 Hydra 826 13 Hydra 826 14 Hydra 826 15 Hydra 826 16 Hydra 826 17 Hydra 826 18 Hydra 826 19 Hydra 826 20 Hydra 826 21 Hydra 826 22 Hydra 826 23 Hydra 826 24 Hydra 826 25 Hydra 826 26 Hydra 826 27 Hydra 826 28 Hydra 826 1 Corvus 826 22 January 3165 23 January 3165 24 January 3165 25 January 3165 26 January 3165 27 January 3165 28 January 3165 29 January 3165 30 January 3165 31 January 3165 1 February 3165 2 February 3165 3 February 3165 4 February 3165 5 February 3165 6 February 3165 7 February 3165 8 February 3165 9 February 3165 10 February 3165 11 February 3165 12 February 3165 13 February 3165 14 February 3165 15 February 3165 16 February 3165 17 February 3165 18 February 3165 19 February 3165 20 February 3165
MS 404870 MS 404871 MS 404872 MS 404873 MS 404874 MS 404875 MS 404876 MS 404877 MS 404878 MS 404879 MS 404880 MS 404881 MS 404882 MS 404883 MS 404884 MS 404885 MS 404886 MS 404887 MS 404888 MS 404889 MS 404890 MS 404891 MS 404892 MS 404893 MS 404894 MS 404895 MS 404896 MS 404897 MS 404898 MD 416106 MD 416107 MD 416108 MD 416109 MD 416110 MD 416111 MD 416112 MD 416113 MD 416114 MD 416115 MD 416116 MD 416117 MD 416118 MD 416119 MD 416120 MD 416121 MD 416122 MD 416123 MD 416124 MD 416125 MD 416126 MD 416127 MD 416128 MD 416129 MD 416130 MD 416131 MD 416132 MD 416133 MD 416134 MD 416135