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 -529→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -529 2 Hydra -529 3 Hydra -529 4 Hydra -529 5 Hydra -529 6 Hydra -529 7 Hydra -529 8 Hydra -529 9 Hydra -529 10 Hydra -529 11 Hydra -529 12 Hydra -529 13 Hydra -529 14 Hydra -529 15 Hydra -529 16 Hydra -529 17 Hydra -529 18 Hydra -529 19 Hydra -529 20 Hydra -529 21 Hydra -529 22 Hydra -529 23 Hydra -529 24 Hydra -529 25 Hydra -529 26 Hydra -529 27 Hydra -529 28 Hydra -529 2 Centaurus -528 10 November 0615 11 November 0615 12 November 0615 13 November 0615 14 November 0615 15 November 0615 16 November 0615 17 November 0615 18 November 0615 19 November 0615 20 November 0615 21 November 0615 22 November 0615 23 November 0615 24 November 0615 25 November 0615 26 November 0615 27 November 0615 28 November 0615 29 November 0615 30 November 0615 1 December 0615 2 December 0615 3 December 0615 4 December 0615 5 December 0615 6 December 0615 7 December 0615 8 December 0615
MS -501043 MS -501044 MS -501045 MS -501046 MS -501047 MS -501048 MS -501049 MS -501050 MS -501051 MS -501052 MS -501053 MS -501054 MS -501055 MS -501056 MS -501057 MS -501058 MS -501059 MS -501060 MS -501061 MS -501062 MS -501063 MS -501064 MS -501065 MS -501066 MS -501067 MS -501068 MS -501069 MS -501070 MS -501016 MD -514971 MD -514970 MD -514969 MD -514968 MD -514967 MD -514966 MD -514965 MD -514964 MD -514963 MD -514962 MD -514961 MD -514960 MD -514959 MD -514958 MD -514957 MD -514956 MD -514955 MD -514954 MD -514953 MD -514952 MD -514951 MD -514950 MD -514949 MD -514948 MD -514947 MD -514946 MD -514945 MD -514944 MD -514943