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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
SunriseRise: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
sunny DaytimeWhat's Visible Now?
All Constellations » Aries » 

η Arietis (eta Arietis)

Altitude: 34.4°   Azimuth: 99.0°   Direction: East

η Arietis is a main-sequence star in the constellation of Aries.

η Arietis visual magnitude is 5.27. Because of its reltive faintness, η Arietis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of η Arietis is 0.161 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of η Arietis (eta Arietis) star
DSS2 image of η Arietis. The red arrow shows the motion of η Arietis during the next 1000 years (2.68 arcmin in Right Ascension and 0.05 arcmin in declination);

Key facts about η Arietis


η Arietis (eta Arietis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 34.4°
Azimuth: 99.0°
Direction: East

Celestial coordinates and finder chart of η Arietis

η 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 η Arietis are provided in the following table:

02h 12m 48s
+21° 12’ 38”

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

Finder chart η Arietis (eta Arietis) star
Simplified finder chart for η Arietis (eta Arietis).

Visibility of η 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 η Arietis (eta 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: 68.8°
Max altitude: 59.7°
Azimuth: 291.2°

Distance of η Arietis from the Sun and relative movement

η Arietis is distant 98.22 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

30.13 pc
98.22 ly
6 km/s
0.161 arcsec/year
0.003 arcsec/year

Spectral properties of η Arietis

η Arietis belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of η Arietis

η Arietis
(eta Arietis)