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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:10 
Transit: 13:06 
Sunset: 21:02
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations »  Canes Venatici »  Deep Sky Objects » 

NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici

Above the horizon.  Circumpolar today
Alt: 50.39°   Az: 294.90°   Direction: West-North-West

NGC 4157 is a Intermediate Spiral Galaxy in the Canes Venatici constellation. NGC 4157 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its visual magnitude of 11.35, NGC 4157 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 4157 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 4157 - Intermediate Spiral Galaxy in Canes Venatici star
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DSS2 image of NGC 4157 in the Red band. The green region on the image is a representation of the major (6.22 arcmin) and minor (1.14 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

12h 12m 17s
+50° 20’ 53”
04h 19m 56s
16h 32m 14s

J2000

12h 11m 03s
+50° 29’ 04”

Finder Chart

The simplified sky charts below show the position of NGC 4157 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 4157 - Intermediate Spiral Galaxy in Canes Venatici star
Simplified finder chart for NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici.

Finder chart NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici star
Simplified finder chart for NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici.

Photometric Information

The following table lists the magnitude of NGC 4157 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).

12.15
11.35
8.56
7.59
7.36

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 4157.

23.65 mag/arcsec2

Apparent Size

The following table reports NGC 4157 apparent angular size. The green area displayed on top of the DSS2 image of NGC 4157 is a visual representation of it.
6.22 arcmin
1.14 arcmin
65°

Morphological Classification

NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici 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 4157 - Intermediate Spiral Galaxy in Canes Venatici in the Hubble de Vaucouleurs sequence.

NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici
Visualization of the morphological classification of NGC 4157 - Intermediate Spiral Galaxy in Canes Venatici, 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 4157 - Intermediate Spiral Galaxy in Canes Venatici is circumpolar and transits at 16:12 UTC (altitude: 88.9°)