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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Aries » 

27 Arietis

Altitude: 51.9°   Azimuth: 144.4°   Direction: South-East

27 Arietis is a giant star in the constellation of Aries.

27 Arietis visual magnitude is 6.23. Because of its reltive faintness, 27 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 27 Arietis:


27 Arietis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 51.9°
Azimuth: 144.4°
Direction: South-East

Celestial coordinates and finder chart of 27 Arietis

27 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 27 Arietis are provided in the following table:

02h 30m 54s
+17° 42’ 14”

The simplified sky map below shows the position of 27 Arietis in the sky:

Finder chart 27 Arietis star
Simplified finder chart for 27 Arietis.

Visibility of 27 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 27 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: 72.3°
Max altitude: 56.2°
Azimuth: 287.7°

Digitized Sky Survey image of 27 Arietis

The image below is a photograph of 27 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 27 Arietis is 0.031 arcsec per year in Right Ascension and -0.084 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 27 Arietis star
DSS2 image of 27 Arietis. The red arrow shows the motion of 27 Arietis during the next 10000 years (5.17 arcmin in Right Ascension and -14.00 arcmin in declination);

Distance of 27 Arietis from the Sun and relative movement

27 Arietis is distant 313.46 light years from the Sun and it is moving towards the Sun at the speed of 118 kilometers per second.

96.15 pc
313.46 ly
-118 km/s
0.031 arcsec/year
-0.084 arcsec/year

Spectral properties of 27 Arietis

27 Arietis belongs to spectral class G5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 27 Arietis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 27 Arietis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 27 Arietis