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 -873→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -873 2 Hydra -873 3 Hydra -873 4 Hydra -873 5 Hydra -873 6 Hydra -873 7 Hydra -873 8 Hydra -873 9 Hydra -873 10 Hydra -873 11 Hydra -873 12 Hydra -873 13 Hydra -873 14 Hydra -873 15 Hydra -873 16 Hydra -873 17 Hydra -873 18 Hydra -873 19 Hydra -873 20 Hydra -873 21 Hydra -873 22 Hydra -873 23 Hydra -873 24 Hydra -873 25 Hydra -873 26 Hydra -873 27 Hydra -873 28 Hydra -873 2 Centaurus -872 27 August -0032 28 August -0032 29 August -0032 30 August -0032 31 August -0032 1 September -0032 2 September -0032 3 September -0032 4 September -0032 5 September -0032 6 September -0032 7 September -0032 8 September -0032 9 September -0032 10 September -0032 11 September -0032 12 September -0032 13 September -0032 14 September -0032 15 September -0032 16 September -0032 17 September -0032 18 September -0032 19 September -0032 20 September -0032 21 September -0032 22 September -0032 23 September -0032 24 September -0032
MS -731040 MS -731041 MS -731042 MS -731043 MS -731044 MS -731045 MS -731046 MS -731047 MS -731048 MS -731049 MS -731050 MS -731051 MS -731052 MS -731053 MS -731054 MS -731055 MS -731056 MS -731057 MS -731058 MS -731059 MS -731060 MS -731061 MS -731062 MS -731063 MS -731064 MS -731065 MS -731066 MS -731067 MS -731013 MD -751357 MD -751356 MD -751355 MD -751354 MD -751353 MD -751352 MD -751351 MD -751350 MD -751349 MD -751348 MD -751347 MD -751346 MD -751345 MD -751344 MD -751343 MD -751342 MD -751341 MD -751340 MD -751339 MD -751338 MD -751337 MD -751336 MD -751335 MD -751334 MD -751333 MD -751332 MD -751331 MD -751330 MD -751329