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🌎  Greenwich, United Kingdom [change]

IC 4942 - Barred Spiral Galaxy in Telescopium

IC 4942 is a Barred Spiral Galaxy in the Telescopium constellation. IC 4942 is situated south of the celestial equator and, as such, it is more easily visible from the southern emisphere.

IC 4942
Galaxy
Telescopium
  • IC 4942 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its B magnitude of 16.27, IC 4942 is visible only through long exposure photography.
Available Resources for IC 4942 - Barred Spiral Galaxy in Telescopium

Photometric information of IC 4942

The following table lists the magnitude of IC 4942 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).

16.27
12.98
12.52
11.86

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 4942.

23.61 mag/arcsec2

Apparent size of IC 4942

The following table reports IC 4942 apparent angular size. The green area displayed on top of the DSS2 image of IC 4942 is a visual representation of it.
0.65 arcmin
0.35 arcmin
147°

Digitized Sky Survey image of IC 4942

The image below is a photograph of IC 4942 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 4942 - Barred Spiral Galaxy in Telescopium star
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DSS2 image of IC 4942 in the Red band. The green region on the image is a representation of the major (0.65 arcmin) and minor (0.35 arcmin) axes of the object's apparent size.

IC 4942 - Barred Spiral Galaxy in Telescopium morphological classification

IC 4942 - Barred Spiral Galaxy in Telescopium is classified as Barred Spiral (Bab) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 4942 - Barred Spiral Galaxy in Telescopium in the Hubble de Vaucouleurs sequence.

IC 4942 - Barred Spiral Galaxy in Telescopium
Visualization of the morphological classification of IC 4942 - Barred Spiral Galaxy in Telescopium, Barred Spiral (Bab).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of IC 4942

Celestial coordinates for the J2000 equinox of IC 4942 are provided in the following table:

20h 06m 48s
-52° 36’ 35”

The simplified sky charts below show the position of IC 4942 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 4942 - Barred Spiral Galaxy in Telescopium star
Simplified finder chart for IC 4942 - Barred Spiral Galaxy in Telescopium.

Finder chart IC 4942 - Barred Spiral Galaxy in Telescopium star
Simplified finder chart for IC 4942 - Barred Spiral Galaxy in Telescopium.

Rise ans set times of IC 4942 from your location

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

IC 4942 - Barred Spiral Galaxy in Telescopium is currently not visible from Greenwich, United Kingdom [change]