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: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Vulpecula » 

4 Vulpeculae

Altitude: 9.8°   Azimuth: 70.5°   Direction: East-North-East

4 Vulpeculae is a multiple hypergiant star in the constellation of Vulpecula.

4 Vulpeculae visual magnitude is 5.16. Because of its reltive faintness, 4 Vulpeculae 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 4 Vulpeculae:


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

Altitude: 9.8°
Azimuth: 70.5°
Direction: East-North-East

Celestial coordinates and finder chart of 4 Vulpeculae

4 Vulpeculae 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 4 Vulpeculae are provided in the following table:

19h 25m 28s
+19° 47’ 54”

The simplified sky map below shows the position of 4 Vulpeculae in the sky:

Finder chart 4 Vulpeculae star
Simplified finder chart for 4 Vulpeculae.

Visibility of 4 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 4 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: 70.2°
Max altitude: 58.3°
Azimuth: 289.8°

Digitized Sky Survey image of 4 Vulpeculae

The image below is a photograph of 4 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 4 Vulpeculae is 0.095 arcsec per year in Right Ascension and -0.063 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 4 Vulpeculae star
DSS2 image of 4 Vulpeculae. The red arrow shows the motion of 4 Vulpeculae during the next 1000 years (1.58 arcmin in Right Ascension and -1.05 arcmin in declination);

Distance of 4 Vulpeculae from the Sun and relative movement

4 Vulpeculae is distant 236.57 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

72.57 pc
236.57 ly
-1 km/s
0.095 arcsec/year
-0.063 arcsec/year

Spectral properties of 4 Vulpeculae

4 Vulpeculae belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where 4 Vulpeculae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 4 Vulpeculae. Attribution: Richard Powell / CC BY-SA

4 Vulpeculae star system properties

4 Vulpeculae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 4 Vulpeculae double sysyem:

18.9 arcsec

Alternative designations of 4 Vulpeculae

4 Vulpeculae