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 -870→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -870 2 Hydra -870 3 Hydra -870 4 Hydra -870 5 Hydra -870 6 Hydra -870 7 Hydra -870 8 Hydra -870 9 Hydra -870 10 Hydra -870 11 Hydra -870 12 Hydra -870 13 Hydra -870 14 Hydra -870 15 Hydra -870 16 Hydra -870 17 Hydra -870 18 Hydra -870 19 Hydra -870 20 Hydra -870 21 Hydra -870 22 Hydra -870 23 Hydra -870 24 Hydra -870 25 Hydra -870 26 Hydra -870 27 Hydra -870 28 Hydra -870 3 Centaurus -869 20 April -0026 21 April -0026 22 April -0026 23 April -0026 24 April -0026 25 April -0026 26 April -0026 27 April -0026 28 April -0026 29 April -0026 30 April -0026 1 May -0026 2 May -0026 3 May -0026 4 May -0026 5 May -0026 6 May -0026 7 May -0026 8 May -0026 9 May -0026 10 May -0026 11 May -0026 12 May -0026 13 May -0026 14 May -0026 15 May -0026 16 May -0026 17 May -0026 18 May -0026
MS -729034 MS -729035 MS -729036 MS -729037 MS -729038 MS -729039 MS -729040 MS -729041 MS -729042 MS -729043 MS -729044 MS -729045 MS -729046 MS -729047 MS -729048 MS -729049 MS -729050 MS -729051 MS -729052 MS -729053 MS -729054 MS -729055 MS -729056 MS -729057 MS -729058 MS -729059 MS -729060 MS -729061 MS -729007 MD -749295 MD -749294 MD -749293 MD -749292 MD -749291 MD -749290 MD -749289 MD -749288 MD -749287 MD -749286 MD -749285 MD -749284 MD -749283 MD -749282 MD -749281 MD -749280 MD -749279 MD -749278 MD -749277 MD -749276 MD -749275 MD -749274 MD -749273 MD -749272 MD -749271 MD -749270 MD -749269 MD -749268 MD -749267