Astrophysics (Index)About

Orion

(well-known constellation in the northern hemisphere)

Orion is a well-known constellation visible from both hemispheres (spanning the equator) with heavily-studied stars and features, named after the hunter from ancient Greek mythology, Orion. Some prominent stars:

NameTypeRadiusApparent MagnitudeDistance
BetelgeuseM-type star supergiant887 Rsun.50724 ly
RigelB-type star blue supergiant78 Rsun.13860 ly
BellatrixB2 III5.75 Rsun1.64250 ly
MintakaO-type star bright giant16.5 Rsun2.231200 ly
AlnilamB-type blue supergiant32 Rsun1.692000 ly
AnlitakTriple star including an O-type blue supergiant20 Rsun1.771260 ly
SaiphB0.522 Rsun2.09650 ly

Among the other "stars" is the Orion Nebula, the middle of three stars descending from the belt, seen as Orion's sword.


(constellation)
Further reading:
http://en.wikipedia.org/wiki/Orion_(constellation)
Coordinates:Orion
05+05

Referenced by pages:
asterism
Bayer designation
Betelgeuse
constellation
declination (dec)
dense core
Herschel Orion Protostar Survey (HOPS)
Nessie
Orion Nebula Cluster (ONC)
Orion Molecular Cloud Complex
Orion Disks
Orion Nebula (M42)
Rigel
right ascension (RA)
spiral arm
Trapezium Cluster
variable star

Index