Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:03 south
wb_twilight Civil TwilightWhat's Visible Now
All Constellations » Cancer » 

15 Cancri

15 Cancri is a variable star in the constellation of Cancer.

15 Cancri visual magnitude is 5.64. Because of its reltive faintness, 15 Cancri should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 15 Cancri:

15 Cancri is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 34°.

Celestial coordinates and finder chart of 15 Cancri

15 Cancri is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 15 Cancri are provided in the following table:

08h 13m 08s
+29° 39’ 24”

The simplified sky map below shows the position of 15 Cancri in the sky:

Finder chart 15 Cancri star
Simplified finder chart for 15 Cancri.

Visibility of 15 Cancri from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 15 Cancri rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.3°
Max altitude: 68.2°
Azimuth: 299.7°
15 Cancri is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 15 Cancri

The image below is a photograph of 15 Cancri 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 0.5x0.5 degrees (30x30 arcmins). The proper motion of 15 Cancri is -0.009 arcsec per year in Right Ascension and -0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 15 Cancri star
DSS2 image of 15 Cancri. The red arrow shows the motion of 15 Cancri during the next 10000 years (-1.50 arcmin in Right Ascension and -3.00 arcmin in declination);

Distance of 15 Cancri from the Sun and relative movement

15 Cancri is distant 871.66 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

267.38 pc
871.66 ly
20 km/s
-0.009 arcsec/year
-0.018 arcsec/year

Spectral properties of 15 Cancri

15 Cancri belongs to spectral class B9 15 Cancri is also a SiCr chemically peculiar star.


The red dot in the diagram below shows where 15 Cancri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 15 Cancri. Attribution: Richard Powell / CC BY-SA

Alternative designations of 15 Cancri