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🌎 Location: Greenwich, United Kingdom [change]

NGC 7638 - Galaxy Pair

NGC 7638 is a Galaxy Pair in the Pegasus constellation. NGC 7638 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 7638
Galaxy Pair
Pegasus
  • NGC 7638 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its B magnitude of 15.5, NGC 7638 is visible only through long exposure photography.
Available Resources for NGC 7638 - Galaxy Pair

Photometric information of NGC 7638

The following table lists the magnitude of NGC 7638 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).

15.5

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 7638.

23.39 mag/arcsec2

Apparent size of NGC 7638

The following table reports NGC 7638 apparent angular size. The green area displayed on top of the DSS2 image of NGC 7638 is a visual representation of it.
0.65 arcmin
0.46 arcmin
175°

Digitized Sky Survey image of NGC 7638

The image below is a photograph of NGC 7638 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 7638 - Galaxy Pair star
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DSS2 image of NGC 7638 in the Red band. The green region on the image is a representation of the major (0.65 arcmin) and minor (0.46 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of NGC 7638

Celestial coordinates for the J2000 equinox of NGC 7638 are provided in the following table:

23h 22m 32s
+11° 19’ 43”

The simplified sky charts below show the position of NGC 7638 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 7638 - Galaxy Pair star
Simplified finder chart for NGC 7638 - Galaxy Pair.

Finder chart NGC 7638 - Galaxy Pair star
Simplified finder chart for NGC 7638 - Galaxy Pair.

Rise ans set times of NGC 7638 from your location

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

Today's NGC 7638 - Galaxy Pair rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 78.7°
Max altitude: 49.8°
Azimuth: 281.3°
NGC 7638 - Galaxy Pair is below the horizon from Greenwich, United Kingdom