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🌎  Greenwich, United Kingdom [change]

NGC 7421 - Spiral Galaxy in Grus

NGC 7421 is a Spiral Galaxy in the Grus constellation. NGC 7421 is situated south of the celestial equator and, as such, it is more easily visible from the southern emisphere.

NGC 7421
Galaxy
Grus
  • NGC 7421 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its visual magnitude of 11.93, NGC 7421 is visible with the help of a telescope havng an aperture of 8 inches (200mm) or more.
Available Resources for NGC 7421 - Spiral Galaxy in Grus

Photometric information of NGC 7421

The following table lists the magnitude of NGC 7421 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).

12.64
11.93
10.24
9.61
9.25

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 7421.

23.09 mag/arcsec2

Apparent size of NGC 7421

The following table reports NGC 7421 apparent angular size. The green area displayed on top of the DSS2 image of NGC 7421 is a visual representation of it.
2.38 arcmin
1.95 arcmin
85°

Digitized Sky Survey image of NGC 7421

The image below is a photograph of NGC 7421 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 7421 - Spiral Galaxy in Grus star
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DSS2 image of NGC 7421 in the Red band. The green region on the image is a representation of the major (2.38 arcmin) and minor (1.95 arcmin) axes of the object's apparent size.

NGC 7421 - Spiral Galaxy in Grus morphological classification

NGC 7421 - Spiral Galaxy in Grus is classified as Spiral (SAbc) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 7421 - Spiral Galaxy in Grus in the Hubble de Vaucouleurs sequence.

NGC 7421 - Spiral Galaxy in Grus
Visualization of the morphological classification of NGC 7421 - Spiral Galaxy in Grus, Spiral (SAbc).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 7421

Celestial coordinates for the J2000 equinox of NGC 7421 are provided in the following table:

22h 56m 53s
-37° 20’ 49”

The simplified sky charts below show the position of NGC 7421 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 7421 - Spiral Galaxy in Grus star
Simplified finder chart for NGC 7421 - Spiral Galaxy in Grus.

Finder chart NGC 7421 - Spiral Galaxy in Grus star
Simplified finder chart for NGC 7421 - Spiral Galaxy in Grus.

Rise ans set times of NGC 7421 from your location

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

Today's NGC 7421 - Spiral Galaxy in Grus rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 127.3°
Max altitude: 1.2°
Azimuth: 232.7°
NGC 7421 - Spiral Galaxy in Grus is below the horizon from Greenwich, United Kingdom