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 1360→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 1360 2 Hydra 1360 3 Hydra 1360 4 Hydra 1360 5 Hydra 1360 6 Hydra 1360 7 Hydra 1360 8 Hydra 1360 9 Hydra 1360 10 Hydra 1360 11 Hydra 1360 12 Hydra 1360 13 Hydra 1360 14 Hydra 1360 15 Hydra 1360 16 Hydra 1360 17 Hydra 1360 18 Hydra 1360 19 Hydra 1360 20 Hydra 1360 21 Hydra 1360 22 Hydra 1360 23 Hydra 1360 24 Hydra 1360 25 Hydra 1360 26 Hydra 1360 27 Hydra 1360 28 Hydra 1360 1 Corvus 1360 20 September 4169 21 September 4169 22 September 4169 23 September 4169 24 September 4169 25 September 4169 26 September 4169 27 September 4169 28 September 4169 29 September 4169 30 September 4169 1 October 4169 2 October 4169 3 October 4169 4 October 4169 5 October 4169 6 October 4169 7 October 4169 8 October 4169 9 October 4169 10 October 4169 11 October 4169 12 October 4169 13 October 4169 14 October 4169 15 October 4169 16 October 4169 17 October 4169 18 October 4169 19 October 4169
MS 761897 MS 761898 MS 761899 MS 761900 MS 761901 MS 761902 MS 761903 MS 761904 MS 761905 MS 761906 MS 761907 MS 761908 MS 761909 MS 761910 MS 761911 MS 761912 MS 761913 MS 761914 MS 761915 MS 761916 MS 761917 MS 761918 MS 761919 MS 761920 MS 761921 MS 761922 MS 761923 MS 761924 MS 761925 MD 783051 MD 783052 MD 783053 MD 783054 MD 783055 MD 783056 MD 783057 MD 783058 MD 783059 MD 783060 MD 783061 MD 783062 MD 783063 MD 783064 MD 783065 MD 783066 MD 783067 MD 783068 MD 783069 MD 783070 MD 783071 MD 783072 MD 783073 MD 783074 MD 783075 MD 783076 MD 783077 MD 783078 MD 783079 MD 783080