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NGC 638 - Elliptical (E?) Galaxy

NGC 638 is a Elliptical (E?) Galaxy in the Pisces constellation. NGC 638 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 638
Galaxy
Pisces
  • NGC 638 is above the horizon from Greenwich, United Kingdom [change]. Its current altitude is 33° above the horizon. See also rise and set times.
  • Given its B magnitude of 14.4, NGC 638 is visible with the help of a telescope havng an aperture of 14 inches (350mm) or more.
Available Resources for NGC 638 - Elliptical (E?) Galaxy

Photometric information of NGC 638

The following table lists the magnitude of NGC 638 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).

14.4
11.92
11.36
10.9

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 638.

23.06 mag/arcsec2

Apparent size of NGC 638

The following table reports NGC 638 apparent angular size. The green area displayed on top of the DSS2 image of NGC 638 is a visual representation of it.
0.94 arcmin
0.62 arcmin
18°

Digitized Sky Survey image of NGC 638

The image below is a photograph of NGC 638 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 638 - Elliptical (E?) Galaxy star
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DSS2 image of NGC 638 in the Red band. The green region on the image is a representation of the major (0.94 arcmin) and minor (0.62 arcmin) axes of the object's apparent size.

NGC 638 - Elliptical (E?) Galaxy morphological classification

NGC 638 - Elliptical (E?) Galaxy is classified as Elliptical (E?) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 638 - Elliptical (E?) Galaxy in the Hubble de Vaucouleurs sequence.

NGC 638 - Elliptical (E?) Galaxy
Visualization of the morphological classification of NGC 638 - Elliptical (E?) Galaxy, Elliptical (E?).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 638

Celestial coordinates for the J2000 equinox of NGC 638 are provided in the following table:

01h 39m 38s
+07° 14’ 14”

The simplified sky charts below show the position of NGC 638 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 638 - Elliptical (E?) Galaxy star
Simplified finder chart for NGC 638 - Elliptical (E?) Galaxy.

Finder chart NGC 638 - Elliptical (E?) Galaxy star
Simplified finder chart for NGC 638 - Elliptical (E?) Galaxy.

Rise ans set times of NGC 638 from your location

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

Today's NGC 638 - Elliptical (E?) Galaxy rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 82.8°
Max altitude: 45.8°
Azimuth: 277.2°
NGC 638 - Elliptical (E?) Galaxy is below the horizon from Greenwich, United Kingdom