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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:15 
Transit: 13:06 
Sunset: 20:56
sunny   (Daytime)   What's Visible Now?
All Constellations »  Ursa Major »  Deep Sky Objects » 

IC 691 - Lenticular Galaxy in Ursa Major

Above the horizon.  Circumpolar today
Alt: 21.95°   Az: 12.07°   Direction: North-North-East

IC 691 is a Lenticular Galaxy in the Ursa Major constellation. IC 691 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its B magnitude of 14.2, IC 691 is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.

The image below is a photograph of IC 691 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 691 - Lenticular Galaxy in Ursa Major star
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DSS2 image of IC 691 in the Red band. The green region on the image is a representation of the major (1.14 arcmin) and minor (0.72 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

11h 28m 07s
+59° 01’ 12”
13h 28m 30s
00h 56m 37s

J2000

11h 26m 44s
+59° 09’ 19”

Finder Chart

The simplified sky charts below show the position of IC 691 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 691 - Lenticular Galaxy in Ursa Major star
Simplified finder chart for IC 691 - Lenticular Galaxy in Ursa Major.

Finder chart IC 691 - Lenticular Galaxy in Ursa Major star
Simplified finder chart for IC 691 - Lenticular Galaxy in Ursa Major.

Photometric Information

The following table lists the magnitude of IC 691 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).

14.2
11.92
11.27
10.86

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 IC 691.

21.78 mag/arcsec2

Apparent Size

The following table reports IC 691 apparent angular size. The green area displayed on top of the DSS2 image of IC 691 is a visual representation of it.
1.14 arcmin
0.72 arcmin
148°

Morphological Classification

IC 691 - Lenticular Galaxy in Ursa Major is classified as Lenticular (S0) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 691 - Lenticular Galaxy in Ursa Major in the Hubble de Vaucouleurs sequence.

IC 691 - Lenticular Galaxy in Ursa Major
Visualization of the morphological classification of IC 691 - Lenticular Galaxy in Ursa Major, Lenticular (S0).
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 691 - Lenticular Galaxy in Ursa Major is circumpolar and transits at 15:12 UTC (altitude: 82.5°)