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public LocationGreenwich, UK
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations »  Cetus »  Deep Sky Objects » 

IC 1820 - Galaxy in Cetus

Above the horizon.  Rise: 1:17 | Tran: 7:46 | Set: 14:15
Alt: 20.24°   Az: 106.25°   Direction: East-South-East

IC 1820 is a Galaxy in the Cetus constellation. IC 1820 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. Given its B magnitude of 15.4, IC 1820 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

The image below is a photograph of IC 1820 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 0.5000x0.5000 degrees (30.00x30.00 arcmins).

Image of IC 1820 - Galaxy in Cetus star
DSS2 image of IC 1820 in the Red band. The green region on the image is a representation of the major (0.53 arcmin) and minor (0.28 arcmin) axes of the object's apparent size.

Celestial Coordinates


02h 37m 10s
+06° 08’ 47”
19h 40m 10s
22h 17m 20s


02h 35m 53s
+06° 02’ 26”

Finder Chart

The simplified sky charts below show the position of IC 1820 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 1820 - Galaxy in Cetus star
Simplified finder chart for IC 1820 - Galaxy in Cetus.

Finder chart IC 1820 - Galaxy in Cetus star
Simplified finder chart for IC 1820 - Galaxy in Cetus.

Photometric Information

The following table lists the magnitude of IC 1820 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).


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

Apparent Size

The following table reports IC 1820 apparent angular size. The green area displayed on top of the DSS2 image of IC 1820 is a visual representation of it.
0.53 arcmin
0.28 arcmin

Rise and Set Times

Location: Greenwich, UK
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's IC 1820 - Galaxy in Cetus rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 83.9°
Max altitude: 44.7°
Azimuth: 276.1°