Monday, January 23, 2012

What number constellation is hercules?

constellations have numbers whats hercules?What number constellation is hercules?Abbreviation:

Her

English name:

Hercules

Coordinates:

see: Stellar data



Particulars:



* Variable stars alpha Her, S Her, SZ Her

* Binaries zeta Her, kappa Her, mu Her, rho Her, u Her, 95 Her

* Globular clusters M 13, M 92, NGC 6229

* Planetary Nebula NGC 6210

* X-ray source Hercules X-1

* Meteor Shower: Tau Herculids





General:



This northern constellation is not very conspicious but the fifth largest in the sky. The northern boundary runs close to DECL=50 degrees, the southern streches with DECL=4 degrees nearly down to the celestial equator. The west-east extention starts at RA=15h 50m and nearly reaches RA=19h.

The four stars epsilon Her, zeta Her, eta Her and pi Her form the asterism Keystone.

Hercules seems to be kneeling on the head of Draco. His outstreched hand is holding a bow and the arrow Sagitta is flying towards the two birds, the Eagle, Aquila and the Swan, Cygnus.

The greek word for the complete form is Kornephoros.

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