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: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:10 south
sunny DaytimeWhat's Visible Now
All Constellations » Sagitta » 


Altitude: 34.1°   Azimuth: 258.8°   Direction: West

HR7171 is a giant star in the constellation of Sagitta.

HR7171 visual magnitude is 6.5. Because of its reltive faintness, HR7171 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 HR7171:


HR7171 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 34.1°
Azimuth: 258.8°
Direction: West

Celestial coordinates and finder chart of HR7171

HR7171 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 HR7171 are provided in the following table:

18h 58m 45s
+19° 47’ 39”

The simplified sky map below shows the position of HR7171 in the sky:

Finder chart HR7171 star
Simplified finder chart for HR7171.

Visibility of HR7171 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 HR7171 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°
HR7171 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7171

The image below is a photograph of HR7171 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 HR7171 is 0.004 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR7171 star
DSS2 image of HR7171. The red arrow shows the motion of HR7171 during the next 100000 years (6.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of HR7171 from the Sun and relative movement

HR7171 is distant 1,928.99 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

591.72 pc
1,928.99 ly
-1 km/s
0.004 arcsec/year
-0.004 arcsec/year

Spectral properties of HR7171

HR7171 belongs to spectral class B7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR7171 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR7171. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7171