M 81 Comparison Table

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physical object > natural object > celestial body > collection of stars > galaxy > spiral galaxy > Sb spiral > M 81

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M 81 comparison table

Subject has purpose is part of is a kind of has catalog has classification criterion has number of star is an instance of has synonym has discovery date has mass has image has definition has distance has discoverer has Messier number

Messier object originally to catalog all objects which could be confused with a comet celestial sphere celestial body Messier catalog an object assigned a number by Charles Messier from Earth

Sb spiral spiral galaxy galaxy catalog Subdivided according to the openness of the spiral arms as Sa spiral, Sb spiral or Sc spiral. 10⁶ to 10¹² 10¹⁰ to 10¹² M_sun Spiral galaxy with arms spread out from the nucleus.

M 81 originally to catalog all objects which could be confused with a comet celestial sphere Messier catalog Subdivided according to the openness of the spiral arms as Sa spiral, Sb spiral or Sc spiral. 10⁶ to 10¹² Messier object NGC 3031 1774 10¹⁰ to 10¹² M_sun A giant spiral galaxy 11 million light-years away in the constellation Ursa Major. It rules the M81 group, the second nearest galaxy group to the Local Group. from Earth Johan Elert Bode 81

Subject	has purpose	is part of	is a kind of	has catalog	has classification criterion	has number of star	is an instance of	has synonym	has discovery date	has mass	has image	has definition	has distance	has discoverer	has Messier number
Messier object	originally to catalog all objects which could be confused with a comet	celestial sphere	celestial body	Messier catalog								an object assigned a number by Charles Messier	from Earth
Sb spiral			spiral galaxy	galaxy catalog	Subdivided according to the openness of the spiral arms as Sa spiral, Sb spiral or Sc spiral.	10⁶ to 10¹²				10¹⁰ to 10¹² M_sun		Spiral galaxy with arms spread out from the nucleus.
M 81	originally to catalog all objects which could be confused with a comet	celestial sphere		Messier catalog	Subdivided according to the openness of the spiral arms as Sa spiral, Sb spiral or Sc spiral.	10⁶ to 10¹²	Messier object	NGC 3031	1774	10¹⁰ to 10¹² M_sun		A giant spiral galaxy 11 million light-years away in the constellation Ursa Major. It rules the M81 group, the second nearest galaxy group to the Local Group.	from Earth	Johan Elert Bode	81

Next Messier object: M 87 Up: Messier object, Sb spiral Previous Messier object: M 80