Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project, thank you!
🌎  Observing from: Greenwich, United Kingdom [change]

HR7391

HR7391 is a multiple hypergiant star in the constellation of Vulpecula.

HR7391 visual magnitude is 5.81. Because of its reltive faintness, HR7391 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 HR7391:

5.81
Hypergiant
HR7391 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 53°.

Celestial coordinates and finder chart of HR7391

HR7391 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 HR7391 are provided in the following table:

19h 26m 28s
+19° 53’ 29”
54.54°
1.59°
Vulpecula

The simplified sky map below shows the position of HR7391 in the sky:

Finder chart HR7391 star
Simplified finder chart for HR7391.

Visibility of HR7391 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR7391 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.1°
Max altitude: 58.4°
Azimuth: 289.9°
HR7391 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7391

The image below is a photograph of HR7391 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 HR7391 is -0.001 arcsec per year in Right Ascension and -0.046 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7391 star
DSS2 image of HR7391. The red arrow shows the motion of HR7391 during the next 10000 years (-0.17 arcmin in Right Ascension and -7.67 arcmin in declination);

Distance of HR7391 from the Sun and relative movement

HR7391 is distant 454.67 light years from the Sun and it is moving towards the Sun at the speed of 34 kilometers per second.

139.47 pc
454.67 ly
-34 km/s
-0.001 arcsec/year
-0.046 arcsec/year

Spectral properties of HR7391

HR7391 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.

0.09
M0III
3720K

The red dot in the diagram below shows where HR7391 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7391. Attribution: Richard Powell / CC BY-SA

HR7391 star system properties

HR7391 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7391 double sysyem:

5.81
9.61
3.8
152.5 arcsec

Alternative designations of HR7391

SAO104839
SAO104839