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: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Aries » 

55 Arietis

Altitude: 49.4°   Azimuth: 254.5°   Direction: West-South-West

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

55 Arietis visual magnitude is 5.72. Because of its reltive faintness, 55 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 55 Arietis:


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

Altitude: 49.4°
Azimuth: 254.5°
Direction: West-South-West

Celestial coordinates and finder chart of 55 Arietis

55 Arietis 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 55 Arietis are provided in the following table:

03h 09m 36s
+29° 04’ 36”

The simplified sky map below shows the position of 55 Arietis in the sky:

Finder chart 55 Arietis star
Simplified finder chart for 55 Arietis.

Visibility of 55 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 55 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: 60.9°
Max altitude: 67.6°
Azimuth: 299.1°
55 Arietis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 55 Arietis

The image below is a photograph of 55 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 55 Arietis is 0.019 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 55 Arietis star
DSS2 image of 55 Arietis. The red arrow shows the motion of 55 Arietis during the next 10000 years (3.17 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of 55 Arietis from the Sun and relative movement

55 Arietis is distant 1,128.03 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

346.02 pc
1,128.03 ly
-2 km/s
0.019 arcsec/year
-0.014 arcsec/year

Spectral properties of 55 Arietis

55 Arietis belongs to spectral class B8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 55 Arietis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 55 Arietis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 55 Arietis