We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Vulpecula » 

31 Vulpeculae

Altitude: 20.2°   Azimuth: 288.5°   Direction: West-North-West

31 Vulpeculae is a variable giant star in the constellation of Vulpecula.

31 Vulpeculae visual magnitude is 4.59. Because of its moderate brightness, 31 Vulpeculae 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 31 Vulpeculae:


31 Vulpeculae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.2°
Azimuth: 288.5°
Direction: West-North-West

Celestial coordinates and finder chart of 31 Vulpeculae

31 Vulpeculae 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 31 Vulpeculae are provided in the following table:

20h 52m 07s
+27° 05’ 48”

The simplified sky map below shows the position of 31 Vulpeculae in the sky:

Finder chart 31 Vulpeculae star
Simplified finder chart for 31 Vulpeculae.

Visibility of 31 Vulpeculae 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 31 Vulpeculae 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: 62.9°
Max altitude: 65.6°
Azimuth: 297.1°

Digitized Sky Survey image of 31 Vulpeculae

The image below is a photograph of 31 Vulpeculae 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 31 Vulpeculae is -0.067 arcsec per year in Right Ascension and -0.065 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 31 Vulpeculae star
DSS2 image of 31 Vulpeculae. The red arrow shows the motion of 31 Vulpeculae during the next 10000 years (-11.17 arcmin in Right Ascension and -10.83 arcmin in declination);

Distance of 31 Vulpeculae from the Sun and relative movement

31 Vulpeculae is distant 216.47 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

66.40 pc
216.47 ly
1 km/s
-0.067 arcsec/year
-0.065 arcsec/year

Spectral properties of 31 Vulpeculae

31 Vulpeculae belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 31 Vulpeculae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 31 Vulpeculae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 31 Vulpeculae

31 Vulpeculae