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 -356→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -356 2 Hydra -356 3 Hydra -356 4 Hydra -356 5 Hydra -356 6 Hydra -356 7 Hydra -356 8 Hydra -356 9 Hydra -356 10 Hydra -356 11 Hydra -356 12 Hydra -356 13 Hydra -356 14 Hydra -356 15 Hydra -356 16 Hydra -356 17 Hydra -356 18 Hydra -356 19 Hydra -356 20 Hydra -356 21 Hydra -356 22 Hydra -356 23 Hydra -356 24 Hydra -356 25 Hydra -356 26 Hydra -356 27 Hydra -356 28 Hydra -356 2 Centaurus -355 4 May 0941 5 May 0941 6 May 0941 7 May 0941 8 May 0941 9 May 0941 10 May 0941 11 May 0941 12 May 0941 13 May 0941 14 May 0941 15 May 0941 16 May 0941 17 May 0941 18 May 0941 19 May 0941 20 May 0941 21 May 0941 22 May 0941 23 May 0941 24 May 0941 25 May 0941 26 May 0941 27 May 0941 28 May 0941 29 May 0941 30 May 0941 31 May 0941 1 June 0941
MS -385376 MS -385377 MS -385378 MS -385379 MS -385380 MS -385381 MS -385382 MS -385383 MS -385384 MS -385385 MS -385386 MS -385387 MS -385388 MS -385389 MS -385390 MS -385391 MS -385392 MS -385393 MS -385394 MS -385395 MS -385396 MS -385397 MS -385398 MS -385399 MS -385400 MS -385401 MS -385402 MS -385403 MS -385349 MD -396091 MD -396090 MD -396089 MD -396088 MD -396087 MD -396086 MD -396085 MD -396084 MD -396083 MD -396082 MD -396081 MD -396080 MD -396079 MD -396078 MD -396077 MD -396076 MD -396075 MD -396074 MD -396073 MD -396072 MD -396071 MD -396070 MD -396069 MD -396068 MD -396067 MD -396066 MD -396065 MD -396064 MD -396063