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 -738→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -738 2 Hydra -738 3 Hydra -738 4 Hydra -738 5 Hydra -738 6 Hydra -738 7 Hydra -738 8 Hydra -738 9 Hydra -738 10 Hydra -738 11 Hydra -738 12 Hydra -738 13 Hydra -738 14 Hydra -738 15 Hydra -738 16 Hydra -738 17 Hydra -738 18 Hydra -738 19 Hydra -738 20 Hydra -738 21 Hydra -738 22 Hydra -738 23 Hydra -738 24 Hydra -738 25 Hydra -738 26 Hydra -738 27 Hydra -738 28 Hydra -738 2 Centaurus -737 25 August 0222 26 August 0222 27 August 0222 28 August 0222 29 August 0222 30 August 0222 31 August 0222 1 September 0222 2 September 0222 3 September 0222 4 September 0222 5 September 0222 6 September 0222 7 September 0222 8 September 0222 9 September 0222 10 September 0222 11 September 0222 12 September 0222 13 September 0222 14 September 0222 15 September 0222 16 September 0222 17 September 0222 18 September 0222 19 September 0222 20 September 0222 21 September 0222
MS -640779 MS -640780 MS -640781 MS -640782 MS -640783 MS -640784 MS -640785 MS -640786 MS -640787 MS -640788 MS -640789 MS -640790 MS -640791 MS -640792 MS -640793 MS -640794 MS -640795 MS -640796 MS -640797 MS -640798 MS -640799 MS -640800 MS -640801 MS -640802 MS -640803 MS -640804 MS -640805 MS -640806 MS -640752 MD -658588 MD -658587 MD -658586 MD -658585 MD -658584 MD -658583 MD -658582 MD -658581 MD -658580 MD -658579 MD -658578 MD -658577 MD -658576 MD -658575 MD -658574 MD -658573 MD -658572 MD -658571 MD -658570 MD -658569 MD -658568 MD -658567 MD -658566 MD -658565 MD -658564 MD -658563 MD -658562 MD -658561