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Almanac > Messier Objects

M103

M103 is a Cluster in Charles Messier's catalog of deep sky objects.
 

 



M103

 
 
Fact Sheet

Messier Number

  M103

Catalog Number

  NGC 581

Constellation

  Cassiopeia

Location

  01 33.2 (Right Ascension)

  60 42 (Declination)

Integrated Visual Magnitude

  7.4

Angular Size

  6 arc minutes

Type

  Cluster

Distance From Earth

  8,500 light years

Discoverer

  Pierre Méchain in 1781

 
Description

Overview:
Messier Object M103 is a Cluster discovered by Pierre Méchain in 1781. It has an angular size of 6 arc minutes.

Location:
M103 is located within the borders of the constellation Cassiopeia at Right Ascension 01 33.2 and Declination 60 42. It is 8,500 light years from the planet Earth which makes it the 41st furthest Messier Object from Earth.

Brightness:
Compared to the other objects from the Messier catalog, M103 is a relatively bright deep space object with a brightness rating of 7.4.