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🌎  Greenwich, United Kingdom [change]

IC 18 - Spiral Galaxy in Cetus

IC 18 is a Spiral Galaxy in the Cetus constellation. IC 18 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.

IC 18
Galaxy
Cetus
  • IC 18 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its B magnitude of 15.03, IC 18 is visible with the help of a telescope havng an aperture of 20 inches (500mm) or more.
Available Resources for IC 18 - Spiral Galaxy in Cetus

Photometric information of IC 18

The following table lists the magnitude of IC 18 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).

15.03
12.14
11.39
11.04

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

The surface brightess reported below is an indication of the brightness per unit of angular area of IC 18.

23.62 mag/arcsec2

Apparent size of IC 18

The following table reports IC 18 apparent angular size. The green area displayed on top of the DSS2 image of IC 18 is a visual representation of it.
1.08 arcmin
0.41 arcmin
29°

Digitized Sky Survey image of IC 18

The image below is a photograph of IC 18 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 IC 18 - Spiral Galaxy in Cetus star
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DSS2 image of IC 18 in the Red band. The green region on the image is a representation of the major (1.08 arcmin) and minor (0.41 arcmin) axes of the object's apparent size.

IC 18 - Spiral Galaxy in Cetus morphological classification

IC 18 - Spiral Galaxy in Cetus is classified as Spiral (SAb) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 18 - Spiral Galaxy in Cetus in the Hubble de Vaucouleurs sequence.

IC 18 - Spiral Galaxy in Cetus
Visualization of the morphological classification of IC 18 - Spiral Galaxy in Cetus, Spiral (SAb).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of IC 18

Celestial coordinates for the J2000 equinox of IC 18 are provided in the following table:

00h 28m 35s
-11° 35’ 12”

The simplified sky charts below show the position of IC 18 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 IC 18 - Spiral Galaxy in Cetus star
Simplified finder chart for IC 18 - Spiral Galaxy in Cetus.

Finder chart IC 18 - Spiral Galaxy in Cetus star
Simplified finder chart for IC 18 - Spiral Galaxy in Cetus.

Rise ans set times of IC 18 from your location

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

Today's IC 18 - Spiral Galaxy in Cetus rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 101.6°
Max altitude: 26.9°
Azimuth: 258.4°
IC 18 - Spiral Galaxy in Cetus is below the horizon from Greenwich, United Kingdom