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: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
sunny DaytimeWhat's Visible Now
All Constellations » Vulpecula » 


Altitude: -10.7°   Azimuth: 323.7°   Direction: North-West

HR7458 is a variable supergiant star in the constellation of Vulpecula.

HR7458 visual magnitude is 7.14. Because of its reltive faintness, HR7458 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 HR7458:


HR7458 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.7°
Azimuth: 323.7°
Direction: North-West

Celestial coordinates and finder chart of HR7458

HR7458 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 HR7458 are provided in the following table:

19h 36m 37s
+20° 19’ 58”

The simplified sky map below shows the position of HR7458 in the sky:

Finder chart HR7458 star
Simplified finder chart for HR7458.

Visibility of HR7458 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 HR7458 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: 69.7°
Max altitude: 58.9°
Azimuth: 290.3°
HR7458 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7458

The image below is a photograph of HR7458 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 HR7458 is -0.003 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7458 star
DSS2 image of HR7458. The red arrow shows the motion of HR7458 during the next 10000 years (-0.50 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR7458 from the Sun and relative movement

HR7458 is distant 5,525.42 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

1,694.92 pc
5,525.42 ly
-11 km/s
-0.003 arcsec/year
-0.011 arcsec/year

Spectral properties of HR7458

HR7458 belongs to spectral class F2 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR7458 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7458. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7458