21 Vulpeculae is a variable sub-giant star in the constellation of Vulpecula.
21 Vulpeculae visual magnitude is 5.18. Because of its reltive faintness, 21 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 21 Vulpeculae:
Celestial coordinates and finder chart of 21 Vulpeculae
21 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 21 Vulpeculae are provided in the following table:
The simplified sky map below shows the position of 21 Vulpeculae in the sky:
Visibility of 21 Vulpeculae from your location
Digitized Sky Survey image of 21 Vulpeculae
The image below is a photograph of 21 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 21 Vulpeculae is 0.014 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of 21 Vulpeculae from the Sun and relative movement
21 Vulpeculae is distant 326.98 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.
Spectral properties of 21 Vulpeculae
21 Vulpeculae belongs to spectral class A7 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where 21 Vulpeculae is situated in the Hertzsprung–Russell diagram.