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 116→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 116 2 Hydra 116 3 Hydra 116 4 Hydra 116 5 Hydra 116 6 Hydra 116 7 Hydra 116 8 Hydra 116 9 Hydra 116 10 Hydra 116 11 Hydra 116 12 Hydra 116 13 Hydra 116 14 Hydra 116 15 Hydra 116 16 Hydra 116 17 Hydra 116 18 Hydra 116 19 Hydra 116 20 Hydra 116 21 Hydra 116 22 Hydra 116 23 Hydra 116 24 Hydra 116 25 Hydra 116 26 Hydra 116 27 Hydra 116 28 Hydra 116 1 Corvus 116 11 April 1829 12 April 1829 13 April 1829 14 April 1829 15 April 1829 16 April 1829 17 April 1829 18 April 1829 19 April 1829 20 April 1829 21 April 1829 22 April 1829 23 April 1829 24 April 1829 25 April 1829 26 April 1829 27 April 1829 28 April 1829 29 April 1829 30 April 1829 1 May 1829 2 May 1829 3 May 1829 4 May 1829 5 May 1829 6 May 1829 7 May 1829 8 May 1829 9 May 1829 10 May 1829
MS -69829 MS -69828 MS -69827 MS -69826 MS -69825 MS -69824 MS -69823 MS -69822 MS -69821 MS -69820 MS -69819 MS -69818 MS -69817 MS -69816 MS -69815 MS -69814 MS -69813 MS -69812 MS -69811 MS -69810 MS -69809 MS -69808 MS -69807 MS -69806 MS -69805 MS -69804 MS -69803 MS -69802 MS -69801 MD -71779 MD -71778 MD -71777 MD -71776 MD -71775 MD -71774 MD -71773 MD -71772 MD -71771 MD -71770 MD -71769 MD -71768 MD -71767 MD -71766 MD -71765 MD -71764 MD -71763 MD -71762 MD -71761 MD -71760 MD -71759 MD -71758 MD -71757 MD -71756 MD -71755 MD -71754 MD -71753 MD -71752 MD -71751 MD -71750