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 1248→
SolPhoDeiTerVenJovSat
1234567
891011121314
15161718192021
22232425262728
1 Hydra 1248 2 Hydra 1248 3 Hydra 1248 4 Hydra 1248 5 Hydra 1248 6 Hydra 1248 7 Hydra 1248 8 Hydra 1248 9 Hydra 1248 10 Hydra 1248 11 Hydra 1248 12 Hydra 1248 13 Hydra 1248 14 Hydra 1248 15 Hydra 1248 16 Hydra 1248 17 Hydra 1248 18 Hydra 1248 19 Hydra 1248 20 Hydra 1248 21 Hydra 1248 22 Hydra 1248 23 Hydra 1248 24 Hydra 1248 25 Hydra 1248 26 Hydra 1248 27 Hydra 1248 28 Hydra 1248 1 Corvus 1248 3 January 3959 4 January 3959 5 January 3959 6 January 3959 7 January 3959 8 January 3959 9 January 3959 10 January 3959 11 January 3959 12 January 3959 13 January 3959 14 January 3959 15 January 3959 16 January 3959 17 January 3959 18 January 3959 19 January 3959 20 January 3959 21 January 3959 22 January 3959 23 January 3959 24 January 3959 25 January 3959 26 January 3959 27 January 3959 28 January 3959 29 January 3959 30 January 3959 31 January 3959 1 February 3959
MS 687015 MS 687016 MS 687017 MS 687018 MS 687019 MS 687020 MS 687021 MS 687022 MS 687023 MS 687024 MS 687025 MS 687026 MS 687027 MS 687028 MS 687029 MS 687030 MS 687031 MS 687032 MS 687033 MS 687034 MS 687035 MS 687036 MS 687037 MS 687038 MS 687039 MS 687040 MS 687041 MS 687042 MS 687043 MD 706089 MD 706090 MD 706091 MD 706092 MD 706093 MD 706094 MD 706095 MD 706096 MD 706097 MD 706098 MD 706099 MD 706100 MD 706101 MD 706102 MD 706103 MD 706104 MD 706105 MD 706106 MD 706107 MD 706108 MD 706109 MD 706110 MD 706111 MD 706112 MD 706113 MD 706114 MD 706115 MD 706116 MD 706117 MD 706118