Astronomy View all facts Glossary Help| Astronomy View all facts Glossary Help |
| physical object > natural object > celestial body > collection of stars > galaxy > spiral galaxy > Sc spiral > Pinwheel galaxy |
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| Pinwheel galaxy 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||||
| Sc 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 Msun | Spiral galaxy with arms widely spread out from the nucleus. | ||||||||
| Pinwheel galaxy | 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 | Triangulum galaxy | 1654 | 1010 to 1012 Msun |  | A Sc II-III spiral galaxy, a satellite of the Andromeda galaxy, about 700 kpc distant. Mv = - 18.9. | 800 kpc from Milky Way galaxy | Hodierna |
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