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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sunny DaytimeWhat's Visible Now?
All Constellations »  Triangulum »  Deep Sky Objects » 

NGC 816 - Galaxy in Triangulum

Altitude: -6.4°   Azimuth: 338.5°   Direction: North-North-West

NGC 816 is a Galaxy in the Triangulum constellation. NGC 816 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere.

NGC 816

NGC 816 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -6.4°
Azimuth: 338.5°
Direction: North-North-West

See also NGC 816 rise and set times.

Given its B magnitude of 15.3, NGC 816 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

Available Resources for NGC 816 - Galaxy in Triangulum

Photometric information of NGC 816

The following table lists the magnitude of NGC 816 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.

The surface brightess reported below is an indication of the brightness per unit of angular area of NGC 816.

23.09 mag/arcsec2

Apparent size of NGC 816

The following table reports NGC 816 apparent angular size. The green area displayed on top of the DSS2 image of NGC 816 is a visual representation of it.
0.66 arcmin
0.52 arcmin

Digitized Sky Survey image of NGC 816

The image below is a photograph of NGC 816 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 816 - Galaxy in Triangulum star
DSS2 image of NGC 816 in the Red band. The green region on the image is a representation of the major (0.66 arcmin) and minor (0.52 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of NGC 816

Celestial coordinates for the J2000 equinox of NGC 816 are provided in the following table:

02h 08m 08s
+29° 15’ 20”

The simplified sky charts below show the position of NGC 816 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 816 - Galaxy in Triangulum star
Simplified finder chart for NGC 816 - Galaxy in Triangulum.

Finder chart NGC 816 - Galaxy in Triangulum star
Simplified finder chart for NGC 816 - Galaxy in Triangulum.

Rise ans set times of NGC 816 from your location

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

Today's NGC 816 - Galaxy in Triangulum rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.7°
Max altitude: 67.8°
Azimuth: 299.3°