Your guide to the Solar System and the night sky
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

NGC 646 - Galaxy Pair in Hydrus

NGC 646 is a Galaxy Pair in the Hydrus constellation. NGC 646 is situated south of the celestial equator and, as such, it is more easily visible from the southern emisphere.

NGC 646
Galaxy Pair
Hydrus
  • NGC 646 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its B magnitude of 14.37, NGC 646 is visible with the help of a telescope havng an aperture of 14 inches (350mm) or more.
Available Resources for NGC 646 - Galaxy Pair in Hydrus

Photometric information of NGC 646

The following table lists the magnitude of NGC 646 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).

14.37

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

Apparent size of NGC 646

The following table reports NGC 646 apparent angular size. The green area displayed on top of the DSS2 image of NGC 646 is a visual representation of it.
1.51 arcmin
1.02 arcmin
121°

Digitized Sky Survey image of NGC 646

The image below is a photograph of NGC 646 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 646 - Galaxy Pair in Hydrus star
/>
DSS2 image of NGC 646 in the Red band. The green region on the image is a representation of the major (1.51 arcmin) and minor (1.02 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of NGC 646

Celestial coordinates for the J2000 equinox of NGC 646 are provided in the following table:

01h 37m 26s
-64° 53’ 47”

The simplified sky charts below show the position of NGC 646 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 646 - Galaxy Pair in Hydrus star
Simplified finder chart for NGC 646 - Galaxy Pair in Hydrus.

Finder chart NGC 646 - Galaxy Pair in Hydrus star
Simplified finder chart for NGC 646 - Galaxy Pair in Hydrus.

Rise ans set times of NGC 646 from your location

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

NGC 646 - Galaxy Pair in Hydrus is currently not visible from Greenwich, United Kingdom [change]