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 928→
SolPhoDeiTerVenJovSat
1
2345678
9101112131415
16171819202122
232425262728
1 Hydra 928 2 Hydra 928 3 Hydra 928 4 Hydra 928 5 Hydra 928 6 Hydra 928 7 Hydra 928 8 Hydra 928 9 Hydra 928 10 Hydra 928 11 Hydra 928 12 Hydra 928 13 Hydra 928 14 Hydra 928 15 Hydra 928 16 Hydra 928 17 Hydra 928 18 Hydra 928 19 Hydra 928 20 Hydra 928 21 Hydra 928 22 Hydra 928 23 Hydra 928 24 Hydra 928 25 Hydra 928 26 Hydra 928 27 Hydra 928 28 Hydra 928 1 Corvus 928 17 December 3356 18 December 3356 19 December 3356 20 December 3356 21 December 3356 22 December 3356 23 December 3356 24 December 3356 25 December 3356 26 December 3356 27 December 3356 28 December 3356 29 December 3356 30 December 3356 31 December 3356 1 January 3357 2 January 3357 3 January 3357 4 January 3357 5 January 3357 6 January 3357 7 January 3357 8 January 3357 9 January 3357 10 January 3357 11 January 3357 12 January 3357 13 January 3357 14 January 3357 15 January 3357
MS 473066 MS 473067 MS 473068 MS 473069 MS 473070 MS 473071 MS 473072 MS 473073 MS 473074 MS 473075 MS 473076 MS 473077 MS 473078 MS 473079 MS 473080 MS 473081 MS 473082 MS 473083 MS 473084 MS 473085 MS 473086 MS 473087 MS 473088 MS 473089 MS 473090 MS 473091 MS 473092 MS 473093 MS 473094 MD 486197 MD 486198 MD 486199 MD 486200 MD 486201 MD 486202 MD 486203 MD 486204 MD 486205 MD 486206 MD 486207 MD 486208 MD 486209 MD 486210 MD 486211 MD 486212 MD 486213 MD 486214 MD 486215 MD 486216 MD 486217 MD 486218 MD 486219 MD 486220 MD 486221 MD 486222 MD 486223 MD 486224 MD 486225 MD 486226