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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations »  Piscis Austrinus »  Deep Sky Objects » 

NGC 7172 - Spiral Galaxy in Piscis Austrinus

Altitude: -22.5°   Azimuth: 113.4°   Direction: East-South-East

NGC 7172 is a Spiral Galaxy in the Piscis Austrinus constellation. NGC 7172 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 7172 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 7172 - Spiral Galaxy in Piscis Austrinus star
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DSS2 image of NGC 7172 in the Red band. The green region on the image is a representation of the major (2.75 arcmin) and minor (1.82 arcmin) axes of the object's apparent size.

Key facts about NGC 7172

NGC 7172
Galaxy
Piscis Austrinus

NGC 7172 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -22.5°
Azimuth: 113.4°
Direction: East-South-East

See also NGC 7172 rise and set times.

Given its visual magnitude of 13.61, NGC 7172 is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.

Available Resources for NGC 7172 - Spiral Galaxy in Piscis Austrinus

Photometric information of NGC 7172

The following table lists the magnitude of NGC 7172 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).

12.72
13.61
9.44
8.69
8.32

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 7172.

23.61 mag/arcsec2

Apparent size of NGC 7172

The following table reports NGC 7172 apparent angular size. The green area displayed on top of the DSS2 image of NGC 7172 is a visual representation of it.
2.75 arcmin
1.82 arcmin
105°

NGC 7172 - Spiral Galaxy in Piscis Austrinus morphological classification

NGC 7172 - Spiral Galaxy in Piscis Austrinus 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 7172 - Spiral Galaxy in Piscis Austrinus in the Hubble de Vaucouleurs sequence.

NGC 7172 - Spiral Galaxy in Piscis Austrinus
Visualization of the morphological classification of NGC 7172 - Spiral Galaxy in Piscis Austrinus, Spiral (SAa).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 7172

Celestial coordinates for the J2000 equinox of NGC 7172 are provided in the following table:

22h 02m 02s
-31° 52’ 10”

The simplified sky charts below show the position of NGC 7172 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 7172 - Spiral Galaxy in Piscis Austrinus star
Simplified finder chart for NGC 7172 - Spiral Galaxy in Piscis Austrinus.

Finder chart NGC 7172 - Spiral Galaxy in Piscis Austrinus star
Simplified finder chart for NGC 7172 - Spiral Galaxy in Piscis Austrinus.

Rise and set times of NGC 7172 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 7172 - Spiral Galaxy in Piscis Austrinus 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: 121.9°
Max altitude: 6.7°
Azimuth: 238.1°