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: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Taurus » 


HR1172 is a variable and double main-sequence star in the constellation of Taurus.

HR1172 visual magnitude is 5.45. Because of its reltive faintness, HR1172 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 HR1172:

HR1172 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR1172

HR1172 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 HR1172 are provided in the following table:

03h 48m 20s
+23° 25’ 15”

The simplified sky map below shows the position of HR1172 in the sky:

Finder chart HR1172 star
Simplified finder chart for HR1172.

Visibility of HR1172 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 HR1172 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: 66.6°
Max altitude: 61.9°
Azimuth: 293.4°
HR1172 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1172

The image below is a photograph of HR1172 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 HR1172 is 0.023 arcsec per year in Right Ascension and -0.05 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1172 star
DSS2 image of HR1172. The red arrow shows the motion of HR1172 during the next 10000 years (3.83 arcmin in Right Ascension and -8.33 arcmin in declination);

Distance of HR1172 from the Sun and relative movement

HR1172 is distant 338.17 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

103.73 pc
338.17 ly
4 km/s
0.023 arcsec/year
-0.05 arcsec/year

Spectral properties of HR1172

HR1172 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1172 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1172. Attribution: Richard Powell / CC BY-SA

HR1172 star system properties

HR1172 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 HR1172 double sysyem:

0.1 arcsec

Alternative designations of HR1172