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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:49  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Aries » 

15 Arietis

Altitude: -10.8°   Azimuth: 321.9°   Direction: North-West

15 Arietis is a variable giant star in the constellation of Aries.

15 Arietis visual magnitude is 5.7. Because of its reltive faintness, 15 Arietis 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 Arietis:


15 Arietis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.8°
Azimuth: 321.9°
Direction: North-West

Celestial coordinates and finder chart of 15 Arietis

15 Arietis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 15 Arietis are provided in the following table:

02h 10m 37s
+19° 30’ 01”

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

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

Visibility of 15 Arietis 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 Arietis 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: 70.5°
Max altitude: 58.0°
Azimuth: 289.5°

Digitized Sky Survey image of 15 Arietis

The image below is a photograph of 15 Arietis 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 Arietis is 0.088 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 15 Arietis star
DSS2 image of 15 Arietis. The red arrow shows the motion of 15 Arietis during the next 10000 years (14.67 arcmin in Right Ascension and -4.67 arcmin in declination);

Distance of 15 Arietis from the Sun and relative movement

15 Arietis is distant 665.31 light years from the Sun and it is moving far from the Sun at the speed of 60 kilometers per second.

204.08 pc
665.31 ly
60 km/s
0.088 arcsec/year
-0.028 arcsec/year

Spectral properties of 15 Arietis

15 Arietis belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of 15 Arietis