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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations »  Aquarius »  Deep Sky Objects » 

NGC 7255 - Spiral Galaxy in Aquarius

Altitude: -7.9°   Azimuth: 254.9°   Direction: West-South-West

NGC 7255 is a Spiral Galaxy in the Aquarius constellation. NGC 7255 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.

NGC 7255
Galaxy
Aquarius

NGC 7255 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.9°
Azimuth: 254.9°
Direction: West-South-West

See also NGC 7255 rise and set times.

Given its B magnitude of 15, NGC 7255 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

Available Resources for NGC 7255 - Spiral Galaxy in Aquarius

Photometric information of NGC 7255

The following table lists the magnitude of NGC 7255 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
11.83
11.13
10.83

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 7255.

24.1 mag/arcsec2

Apparent size of NGC 7255

The following table reports NGC 7255 apparent angular size. The green area displayed on top of the DSS2 image of NGC 7255 is a visual representation of it.
1.47 arcmin
0.31 arcmin
116°

Digitized Sky Survey image of NGC 7255

The image below is a photograph of NGC 7255 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 7255 - Spiral Galaxy in Aquarius star
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DSS2 image of NGC 7255 in the Red band. The green region on the image is a representation of the major (1.47 arcmin) and minor (0.31 arcmin) axes of the object's apparent size.

NGC 7255 - Spiral Galaxy in Aquarius morphological classification

NGC 7255 - Spiral Galaxy in Aquarius is classified as Spiral (SAa) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 7255 - Spiral Galaxy in Aquarius in the Hubble de Vaucouleurs sequence.

NGC 7255 - Spiral Galaxy in Aquarius
Visualization of the morphological classification of NGC 7255 - Spiral Galaxy in Aquarius, Spiral (SAa).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 7255

Celestial coordinates for the J2000 equinox of NGC 7255 are provided in the following table:

22h 23m 08s
-15° 32’ 29”

The simplified sky charts below show the position of NGC 7255 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 7255 - Spiral Galaxy in Aquarius star
Simplified finder chart for NGC 7255 - Spiral Galaxy in Aquarius.

Finder chart NGC 7255 - Spiral Galaxy in Aquarius star
Simplified finder chart for NGC 7255 - Spiral Galaxy in Aquarius.

Rise ans set times of NGC 7255 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 7255 - Spiral Galaxy in Aquarius 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: 105.5°
Max altitude: 23.0°
Azimuth: 254.5°