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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
sunny   (Daytime)   What's Visible Now?
All Constellations »  Apus »  Deep Sky Objects » 

IC 4640 - Intermediate Spiral Galaxy in Apus

Below the horizon.  Never rises today
Alt: -57.66°   Az: 166.56°   Direction: South-South-East

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).

Image of IC 4640 - Intermediate Spiral Galaxy in Apus star
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DSS2 image of IC 4640 in the Red band. The green region on the image is a representation of the major (1.34 arcmin) and minor (1.2 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

17h 28m 18s
-80° 05’ 03”
15h 04m 58s
08h 33m 17s

J2000

17h 23m 57s
-80° 03’ 51”

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°.

Finder chart IC 4640 - Intermediate Spiral Galaxy in Apus star
Simplified finder chart for IC 4640 - Intermediate Spiral Galaxy in Apus.

Finder chart IC 4640 - Intermediate Spiral Galaxy in Apus star
Simplified finder chart for IC 4640 - Intermediate Spiral Galaxy in Apus.

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).

14.78
12.18
11.34
11.42

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.
1.34 arcmin
1.2 arcmin
130°

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.

IC 4640 - Intermediate Spiral Galaxy in Apus
Visualization of the morphological classification of IC 4640 - Intermediate Spiral Galaxy in Apus, Intermediate Spiral (SABc).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Rise and Set Times

Location: Greenwich, UK
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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