IC 4640 - Intermediate Spiral Galaxy in Apus

IC 4640 is a Intermediate Spiral Galaxy in the Apus constellation. IC 4640 is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere. Given its B magnitude of 14.78, IC 4640 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

The image below is a photograph of IC 4640 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 0.5000x0.5000 degrees (30.00x30.00 arcmins).

Celestial Coordinates

Apparent

J2000

Finder Chart

The simplified sky charts below show the position of IC 4640 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Photometric Information

The following table lists the magnitude of IC 4640 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).

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

Apparent Size

The following table reports IC 4640 apparent angular size. The green area displayed on top of the DSS2 image of IC 4640 is a visual representation of it.

Morphological Classification

IC 4640 - Intermediate Spiral Galaxy in Apus is classified as Intermediate Spiral (SABc) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 4640 - Intermediate Spiral Galaxy in Apus in the Hubble de Vaucouleurs sequence.

Rise and Set Times

IC 4640 - Intermediate Spiral Galaxy in Apus is currently not visible from Greenwich, UK