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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: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Aries » 

30 Arietis

Altitude: 57.8°   Azimuth: 137.7°   Direction: South-East

30 Arietis is a double giant star in the constellation of Aries.

30 Arietis visual magnitude is 6.5. Because of its reltive faintness, 30 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 30 Arietis:


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

Altitude: 57.8°
Azimuth: 137.7°
Direction: South-East

Celestial coordinates and finder chart of 30 Arietis

30 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 30 Arietis are provided in the following table:

02h 37m 00s
+24° 38’ 51”

The simplified sky map below shows the position of 30 Arietis in the sky:

Finder chart 30 Arietis star
Simplified finder chart for 30 Arietis.

Visibility of 30 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 30 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: 65.4°
Max altitude: 63.2°
Azimuth: 294.6°

Digitized Sky Survey image of 30 Arietis

The image below is a photograph of 30 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 30 Arietis is 0.136 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 30 Arietis star
DSS2 image of 30 Arietis. The red arrow shows the motion of 30 Arietis during the next 1000 years (2.27 arcmin in Right Ascension and -0.10 arcmin in declination);

Distance of 30 Arietis from the Sun and relative movement

30 Arietis is distant 130.82 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

40.13 pc
130.82 ly
15 km/s
0.136 arcsec/year
-0.006 arcsec/year

Spectral properties of 30 Arietis

30 Arietis belongs to spectral class F6 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 30 Arietis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 30 Arietis. Attribution: Richard Powell / CC BY-SA

30 Arietis star system properties

30 Arietis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 30 Arietis double sysyem:

38.3 arcsec

Alternative designations of 30 Arietis