Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:45  ☀️ Transit: 13:03  🌅 Sunset: 19:23


HR3172 is a hypergiant star in the constellation of Monoceros.

HR3172 visual magnitude is 6.41. Because of its reltive faintness, HR3172 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 HR3172:

HR3172 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR3172

HR3172 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 HR3172 are provided in the following table:

08h 05m 49s
-00° 34’ 24”

The simplified sky map below shows the position of HR3172 in the sky:

Finder chart HR3172 star
Simplified finder chart for HR3172.

Visibility of HR3172 from your location

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

Today's HR3172 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 90.6°
Max altitude: 37.9°
Azimuth: 269.4°
HR3172 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3172

The image below is a photograph of HR3172 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 HR3172 is -0.022 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3172 star
DSS2 image of HR3172. The red arrow shows the motion of HR3172 during the next 10000 years (-3.67 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of HR3172 from the Sun and relative movement

HR3172 is distant 711.79 light years from the Sun and it is moving far from the Sun at the speed of 34 kilometers per second.

218.34 pc
711.79 ly
34 km/s
-0.022 arcsec/year
-0.013 arcsec/year

Spectral properties of HR3172

HR3172 belongs to spectral class K0


The red dot in the diagram below shows where HR3172 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3172. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3172