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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
sunny   (Daytime)   What's Visible Now?
All Constellations »  Centaurus »  Deep Sky Objects » 

NGC 4940 - Spiral Galaxy in Centaurus

Below the horizon.  Never rises today
Alt: -42.54°   Az: 116.78°   Direction: East-South-East

NGC 4940 is a Spiral Galaxy in the Centaurus constellation. NGC 4940 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its B magnitude of 13.81, NGC 4940 is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.

The image below is a photograph of NGC 4940 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 NGC 4940 - Spiral Galaxy in Centaurus star
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DSS2 image of NGC 4940 in the Red band. The green region on the image is a representation of the major (1.13 arcmin) and minor (1 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

13h 06m 25s
-47° 22’ 04”
17h 04m 52s
06h 11m 17s

J2000

13h 04m 59s
-47° 14’ 12”

Finder Chart

The simplified sky charts below show the position of NGC 4940 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 4940 - Spiral Galaxy in Centaurus star
Simplified finder chart for NGC 4940 - Spiral Galaxy in Centaurus.

Finder chart NGC 4940 - Spiral Galaxy in Centaurus star
Simplified finder chart for NGC 4940 - Spiral Galaxy in Centaurus.

Photometric Information

The following table lists the magnitude of NGC 4940 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).

13.81
10.75
10.09
9.79

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 4940.

22.89 mag/arcsec2

Apparent Size

The following table reports NGC 4940 apparent angular size. The green area displayed on top of the DSS2 image of NGC 4940 is a visual representation of it.
1.13 arcmin
1 arcmin
28°

Morphological Classification

NGC 4940 - Spiral Galaxy in Centaurus is classified as Spiral (SAa) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 4940 - Spiral Galaxy in Centaurus in the Hubble de Vaucouleurs sequence.

NGC 4940 - Spiral Galaxy in Centaurus
Visualization of the morphological classification of NGC 4940 - Spiral Galaxy in Centaurus, Spiral (SAa).
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

NGC 4940 - Spiral Galaxy in Centaurus is currently not visible from Greenwich, UK