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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

NGC 642 - Galaxy in Sculptor

Below the horizon.  Rise: 5:41 | Tran: 8:35 | Set: 11:29
Altitude: -11.9°   Azimuth: 236.3°   Direction: West-South-West

NGC 642 is a Galaxy in the Sculptor constellation. NGC 642 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere.

The image below is a photograph of NGC 642 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 NGC 642 -  Galaxy in Sculptor star
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DSS2 image of NGC 642 in the Red band. The green region on the image is a representation of the major (1.8 arcmin) and minor (1.09 arcmin) axes of the object's apparent size.

Key facts about NGC 642

NGC 642
Galaxy
Sculptor

NGC 642 is below the horizon from Greenwich, UK.

Altitude: -11.9°
Azimuth: 236.3°
Direction: West-South-West

See also NGC 642 rise and set times.

Given its B magnitude of 13.58, NGC 642 is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.

Available Resources for NGC 642 - Galaxy in Sculptor

Photometric information of NGC 642

The following table lists the magnitude of NGC 642 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).

13.58
11.2
10.76
10.29

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 NGC 642.

23.06 mag/arcsec2

Apparent size of NGC 642

The following table reports NGC 642 apparent angular size. The green area displayed on top of the DSS2 image of NGC 642 is a visual representation of it.
1.8 arcmin
1.09 arcmin
18°

NGC 642 - Galaxy in Sculptor morphological classification

NGC 642 - Galaxy in Sculptor is classified as according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 642 - Galaxy in Sculptor in the Hubble de Vaucouleurs sequence.

NGC 642 - Galaxy in Sculptor
Visualization of the morphological classification of NGC 642 - Galaxy in Sculptor, .
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 642

Celestial coordinates for the J2000 equinox of NGC 642 are provided in the following table:

01h 39m 06s
-29° 54’ 53”

The simplified sky charts below show the position of NGC 642 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 NGC 642 -  Galaxy in Sculptor star
Simplified finder chart for NGC 642 - Galaxy in Sculptor.

Finder chart NGC 642 -  Galaxy in Sculptor star
Simplified finder chart for NGC 642 - Galaxy in Sculptor.

Rise and set times of NGC 642 from your location

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

Today's NGC 642 - Galaxy in Sculptor rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 119.9°
Max altitude: 8.6°
Azimuth: 240.1°