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 -892→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -892 2 Hydra -892 3 Hydra -892 4 Hydra -892 5 Hydra -892 6 Hydra -892 7 Hydra -892 8 Hydra -892 9 Hydra -892 10 Hydra -892 11 Hydra -892 12 Hydra -892 13 Hydra -892 14 Hydra -892 15 Hydra -892 16 Hydra -892 17 Hydra -892 18 Hydra -892 19 Hydra -892 20 Hydra -892 21 Hydra -892 22 Hydra -892 23 Hydra -892 24 Hydra -892 25 Hydra -892 26 Hydra -892 27 Hydra -892 28 Hydra -892 2 Centaurus -891 28 November -0068 29 November -0068 30 November -0068 1 December -0068 2 December -0068 3 December -0068 4 December -0068 5 December -0068 6 December -0068 7 December -0068 8 December -0068 9 December -0068 10 December -0068 11 December -0068 12 December -0068 13 December -0068 14 December -0068 15 December -0068 16 December -0068 17 December -0068 18 December -0068 19 December -0068 20 December -0068 21 December -0068 22 December -0068 23 December -0068 24 December -0068 25 December -0068 26 December -0068
MS -743743 MS -743744 MS -743745 MS -743746 MS -743747 MS -743748 MS -743749 MS -743750 MS -743751 MS -743752 MS -743753 MS -743754 MS -743755 MS -743756 MS -743757 MS -743758 MS -743759 MS -743760 MS -743761 MS -743762 MS -743763 MS -743764 MS -743765 MS -743766 MS -743767 MS -743768 MS -743769 MS -743770 MS -743716 MD -764413 MD -764412 MD -764411 MD -764410 MD -764409 MD -764408 MD -764407 MD -764406 MD -764405 MD -764404 MD -764403 MD -764402 MD -764401 MD -764400 MD -764399 MD -764398 MD -764397 MD -764396 MD -764395 MD -764394 MD -764393 MD -764392 MD -764391 MD -764390 MD -764389 MD -764388 MD -764387 MD -764386 MD -764385