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: 6:44  
clear_day Transit: 12:51  
SunsetSet: 18:57 south
sunny DaytimeWhat's Visible Now
All Constellations » Gemini » 


Altitude: 45.1°   Azimuth: 250.9°   Direction: West-South-West

HR2931 is a main-sequence star in the constellation of Gemini.

HR2931 visual magnitude is 6.17. Because of its reltive faintness, HR2931 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 HR2931:


HR2931 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 45.1°
Azimuth: 250.9°
Direction: West-South-West

Celestial coordinates and finder chart of HR2931

HR2931 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 HR2931 are provided in the following table:

07h 39m 11s
+24° 13’ 21”

The simplified sky map below shows the position of HR2931 in the sky:

Finder chart HR2931 star
Simplified finder chart for HR2931.

Visibility of HR2931 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 HR2931 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: 65.8°
Max altitude: 62.7°
Azimuth: 294.2°

Digitized Sky Survey image of HR2931

The image below is a photograph of HR2931 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 HR2931 is -0.012 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2931 star
DSS2 image of HR2931. The red arrow shows the motion of HR2931 during the next 10000 years (-2.00 arcmin in Right Ascension and 0.33 arcmin in declination);

Distance of HR2931 from the Sun and relative movement

HR2931 is distant 434.67 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

133.33 pc
434.67 ly
-11 km/s
-0.012 arcsec/year
0.002 arcsec/year

Spectral properties of HR2931

HR2931 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR2931 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2931. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2931