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| physical object > natural object > celestial body > collection of stars > galaxy > spiral galaxy > Sc spiral | 
| Sc spiral comparison table | |||||||
| Subject | has synonym | has discovery date | has image | has definition | has distance | has discoverer | has Messier number | 
|---|---|---|---|---|---|---|---|
| M 100 | NGC 4321 | 1781 | ![]()  | from Earth | Pierre Mechain | 100 | |
| Pinwheel galaxy | Triangulum galaxy | 1654 | ![]()  | 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 | 33 | 
| Whirlpool galaxy | NGC 5194 | 1773 | ![]()  | from Earth | Charles Messier | 51 | 
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