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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations »  Ursa Major »  Deep Sky Objects » 

NGC 3398 - Intermediate Spiral Galaxy in Ursa Major

Above the horizon.  Circumpolar today
Alt: 16.95°   Az: 355.23°   Direction: North

NGC 3398 is a Intermediate Spiral Galaxy in the Ursa Major constellation. NGC 3398 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its B magnitude of 14.4, NGC 3398 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 3398 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 3398 - Intermediate Spiral Galaxy in Ursa Major star
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DSS2 image of NGC 3398 in the Red band. The green region on the image is a representation of the major (0.86 arcmin) and minor (0.32 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

10h 53m 00s
+55° 15’ 36”
11h 27m 54s
22h 20m 55s

J2000

10h 51m 30s
+55° 23’ 27”

Finder Chart

The simplified sky charts below show the position of NGC 3398 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 3398 - Intermediate Spiral Galaxy in Ursa Major star
Simplified finder chart for NGC 3398 - Intermediate Spiral Galaxy in Ursa Major.

Finder chart NGC 3398 - Intermediate Spiral Galaxy in Ursa Major star
Simplified finder chart for NGC 3398 - Intermediate Spiral Galaxy in Ursa Major.

Photometric Information

The following table lists the magnitude of NGC 3398 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).

14.4
11.87
11.17
10.76

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 3398.

22.2 mag/arcsec2

Apparent Size

The following table reports NGC 3398 apparent angular size. The green area displayed on top of the DSS2 image of NGC 3398 is a visual representation of it.
0.86 arcmin
0.32 arcmin
76°

Morphological Classification

NGC 3398 - Intermediate Spiral Galaxy in Ursa Major 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 3398 - Intermediate Spiral Galaxy in Ursa Major in the Hubble de Vaucouleurs sequence.

NGC 3398 - Intermediate Spiral Galaxy in Ursa Major
Visualization of the morphological classification of NGC 3398 - Intermediate Spiral Galaxy in Ursa Major, 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 3398 - Intermediate Spiral Galaxy in Ursa Major is circumpolar and transits at 14:41 UTC (altitude: 86.2°)