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 816→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 816 2 Hydra 816 3 Hydra 816 4 Hydra 816 5 Hydra 816 6 Hydra 816 7 Hydra 816 8 Hydra 816 9 Hydra 816 10 Hydra 816 11 Hydra 816 12 Hydra 816 13 Hydra 816 14 Hydra 816 15 Hydra 816 16 Hydra 816 17 Hydra 816 18 Hydra 816 19 Hydra 816 20 Hydra 816 21 Hydra 816 22 Hydra 816 23 Hydra 816 24 Hydra 816 25 Hydra 816 26 Hydra 816 27 Hydra 816 28 Hydra 816 1 Corvus 816 1 April 3146 2 April 3146 3 April 3146 4 April 3146 5 April 3146 6 April 3146 7 April 3146 8 April 3146 9 April 3146 10 April 3146 11 April 3146 12 April 3146 13 April 3146 14 April 3146 15 April 3146 16 April 3146 17 April 3146 18 April 3146 19 April 3146 20 April 3146 21 April 3146 22 April 3146 23 April 3146 24 April 3146 25 April 3146 26 April 3146 27 April 3146 28 April 3146 29 April 3146 30 April 3146
MS 398184 MS 398185 MS 398186 MS 398187 MS 398188 MS 398189 MS 398190 MS 398191 MS 398192 MS 398193 MS 398194 MS 398195 MS 398196 MS 398197 MS 398198 MS 398199 MS 398200 MS 398201 MS 398202 MS 398203 MS 398204 MS 398205 MS 398206 MS 398207 MS 398208 MS 398209 MS 398210 MS 398211 MS 398212 MD 409235 MD 409236 MD 409237 MD 409238 MD 409239 MD 409240 MD 409241 MD 409242 MD 409243 MD 409244 MD 409245 MD 409246 MD 409247 MD 409248 MD 409249 MD 409250 MD 409251 MD 409252 MD 409253 MD 409254 MD 409255 MD 409256 MD 409257 MD 409258 MD 409259 MD 409260 MD 409261 MD 409262 MD 409263 MD 409264