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 -248→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -248 2 Hydra -248 3 Hydra -248 4 Hydra -248 5 Hydra -248 6 Hydra -248 7 Hydra -248 8 Hydra -248 9 Hydra -248 10 Hydra -248 11 Hydra -248 12 Hydra -248 13 Hydra -248 14 Hydra -248 15 Hydra -248 16 Hydra -248 17 Hydra -248 18 Hydra -248 19 Hydra -248 20 Hydra -248 21 Hydra -248 22 Hydra -248 23 Hydra -248 24 Hydra -248 25 Hydra -248 26 Hydra -248 27 Hydra -248 28 Hydra -248 2 Centaurus -247 13 July 1144 14 July 1144 15 July 1144 16 July 1144 17 July 1144 18 July 1144 19 July 1144 20 July 1144 21 July 1144 22 July 1144 23 July 1144 24 July 1144 25 July 1144 26 July 1144 27 July 1144 28 July 1144 29 July 1144 30 July 1144 31 July 1144 1 August 1144 2 August 1144 3 August 1144 4 August 1144 5 August 1144 6 August 1144 7 August 1144 8 August 1144 9 August 1144 10 August 1144
MS -313168 MS -313169 MS -313170 MS -313171 MS -313172 MS -313173 MS -313174 MS -313175 MS -313176 MS -313177 MS -313178 MS -313179 MS -313180 MS -313181 MS -313182 MS -313183 MS -313184 MS -313185 MS -313186 MS -313187 MS -313188 MS -313189 MS -313190 MS -313191 MS -313192 MS -313193 MS -313194 MS -313195 MS -313141 MD -321877 MD -321876 MD -321875 MD -321874 MD -321873 MD -321872 MD -321871 MD -321870 MD -321869 MD -321868 MD -321867 MD -321866 MD -321865 MD -321864 MD -321863 MD -321862 MD -321861 MD -321860 MD -321859 MD -321858 MD -321857 MD -321856 MD -321855 MD -321854 MD -321853 MD -321852 MD -321851 MD -321850 MD -321849