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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:02 
Transit: 11:43 
Sunset: 16:24
sunny   (Daytime)  
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All Constellations »  Grus »  Deep Sky Objects » 

NGC 7531 - Intermediate Spiral Galaxy in Grus

Below the horizon.  Never rises today
Alt: -44.36°   Az: 108.45°   Direction: East-South-East

NGC 7531 is a Intermediate Spiral Galaxy in the Grus constellation. NGC 7531 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its visual magnitude of 11.26, NGC 7531 is visible with the help of a telescope having an aperture of 6 inches (150mm) or more.

The image below is a photograph of NGC 7531 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 7531 - Intermediate Spiral Galaxy in Grus star
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DSS2 image of NGC 7531 in the Red band. The green region on the image is a representation of the major (4.11 arcmin) and minor (1.72 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

23h 16m 11s
-43° 27’ 51”
16h 36m 35s
15h 52m 46s

J2000

23h 14m 48s
-43° 36’ 00”

Finder Chart

The simplified sky charts below show the position of NGC 7531 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 7531 - Intermediate Spiral Galaxy in Grus star
Simplified finder chart for NGC 7531 - Intermediate Spiral Galaxy in Grus.

Finder chart NGC 7531 - Intermediate Spiral Galaxy in Grus star
Simplified finder chart for NGC 7531 - Intermediate Spiral Galaxy in Grus.

Photometric Information

The following table lists the magnitude of NGC 7531 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).

11.99
11.26
9.35
8.7
8.45

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 7531.

23.09 mag/arcsec2

Apparent Size

The following table reports NGC 7531 apparent angular size. The green area displayed on top of the DSS2 image of NGC 7531 is a visual representation of it.
4.11 arcmin
1.72 arcmin
17°

Morphological Classification

NGC 7531 - Intermediate Spiral Galaxy in Grus is classified as Intermediate Spiral (SABb) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 7531 - Intermediate Spiral Galaxy in Grus in the Hubble de Vaucouleurs sequence.

NGC 7531 - Intermediate Spiral Galaxy in Grus
Visualization of the morphological classification of NGC 7531 - Intermediate Spiral Galaxy in Grus, Intermediate Spiral (SABb).
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 7531 - Intermediate Spiral Galaxy in Grus is currently not visible from Greenwich, UK