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Messier 103 - Open Cluster in Cassiopeia

Messier 103 is a Open Cluster in the Cassiopeia constellation. Messier 103 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere.

Messier 103
Open Cluster
Cassiopeia
  • Messier 103 is above the horizon from Greenwich, United Kingdom [change]. Its current altitude is 37° above the horizon. See also rise and set times.
  • Given its visual magnitude of 7.4, Messier 103 is visible with the help of a small binocular.
Available Resources for Messier 103 - Open Cluster in Cassiopeia

Photometric information of Messier 103

The following table lists the magnitude of Messier 103 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).

7.72
7.4

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

Apparent size of Messier 103

The following table reports Messier 103 apparent angular size. The green area displayed on top of the DSS2 image of Messier 103 is a visual representation of it.
4.5 arcmin
4.5 arcmin

Digitized Sky Survey image of Messier 103

The image below is a photograph of Messier 103 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins).

Image of Messier 103 - Open Cluster in Cassiopeia star
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DSS2 image of Messier 103 in the Red band. The green region on the image is a representation of the major (4.5 arcmin) and minor (4.5 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of Messier 103

Celestial coordinates for the J2000 equinox of Messier 103 are provided in the following table:

01h 33m 21s
+60° 39’ 28”

The simplified sky charts below show the position of Messier 103 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Finder chart Messier 103 - Open Cluster in Cassiopeia star
Simplified finder chart for Messier 103 - Open Cluster in Cassiopeia.

Finder chart Messier 103 - Open Cluster in Cassiopeia star
Simplified finder chart for Messier 103 - Open Cluster in Cassiopeia.

Rise ans set times of Messier 103 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Messier 103 - Open Cluster in Cassiopeia is circumpolar and transits at 10:07 UTC (altitude: 80.8°)