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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Scorpius » 

25 Scorpii

Altitude: -63.5°   Azimuth: 14.1°   Direction: North-North-East

25 Scorpii is a giant star in the constellation of Scorpius.

25 Scorpii visual magnitude is 6.71. Because of its reltive faintness, 25 Scorpii 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 25 Scorpii is -0.005 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 25 Scorpii star
DSS2 image of 25 Scorpii. The red arrow shows the motion of 25 Scorpii during the next 10000 years (-0.83 arcmin in Right Ascension and -2.33 arcmin in declination);

Key facts about 25 Scorpii

6.71
Giant

25 Scorpii is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -63.5°
Azimuth: 14.1°
Direction: North-North-East

Celestial coordinates and finder chart of 25 Scorpii

25 Scorpii is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 25 Scorpii are provided in the following table:

16h 46m 51s
-25° 31’ 42”
355.26°
12.64°
Scorpius

The simplified sky map below shows the position of 25 Scorpii in the sky:

Finder chart 25 Scorpii star
Simplified finder chart for 25 Scorpii.

Visibility of 25 Scorpii 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 25 Scorpii 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: 115.5°
Max altitude: 13.0°
Azimuth: 244.5°

Distance of 25 Scorpii from the Sun and relative movement

25 Scorpii is distant 754.63 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

231.48 pc
754.63 ly
2 km/s
-0.005 arcsec/year
-0.014 arcsec/year

Spectral properties of 25 Scorpii

25 Scorpii belongs to spectral class G6

-0.11
G6
4348K

The red dot in the diagram below shows where 25 Scorpii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 25 Scorpii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 25 Scorpii

SAO184630
SAO184630