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: 4:51  
clear_day Transit: 12:56  
SunsetSet: 21:00 south
sunny DaytimeWhat's Visible Now
All Constellations » Aries » 

Botein - δ Arietis (delta Arietis)

Botein, also designated as δ Arietis (delta Arietis), is a variable giant star in the constellation of Aries.

Botein visual magnitude is 4.35. Because of its moderate brightness, Botein should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Botein:

Botein - δ Arietis (delta Arietis) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 53°.

Celestial coordinates and finder chart of Botein

Botein 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 Botein are provided in the following table:

03h 11m 37s
+19° 43’ 36”

The simplified sky map below shows the position of Botein in the sky:

Finder chart Botein - δ Arietis (delta Arietis) star
Simplified finder chart for Botein - δ Arietis (delta Arietis).

Visibility of Botein 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 Botein - δ Arietis (delta 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: 70.3°
Max altitude: 58.2°
Azimuth: 289.7°
Botein - δ Arietis (delta Arietis) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Botein

The image below is a photograph of Botein 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 Botein is 0.152 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Botein - δ Arietis (delta Arietis) star
DSS2 image of Botein. The red arrow shows the motion of Botein during the next 1000 years (2.53 arcmin in Right Ascension and -0.18 arcmin in declination);

Distance of Botein from the Sun and relative movement

Botein is distant 167.70 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

51.44 pc
167.70 ly
25 km/s
0.152 arcsec/year
-0.011 arcsec/year

Spectral properties of Botein

Botein belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Botein

δ Arietis
(delta Arietis)