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: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Lynx » 


HR2903 is a hypergiant star in the constellation of Lynx.

HR2903 visual magnitude is 5.65. Because of its reltive faintness, HR2903 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 HR2903:

HR2903 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 12°.

Celestial coordinates and finder chart of HR2903

HR2903 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2903 are provided in the following table:

07h 36m 31s
+46° 10’ 49”

The simplified sky map below shows the position of HR2903 in the sky:

Finder chart HR2903 star
Simplified finder chart for HR2903.

Visibility of HR2903 from your location

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

HR2903 is circumpolar and transits at 14:45 UTC (altitude: 84.7°)

Digitized Sky Survey image of HR2903

The image below is a photograph of HR2903 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 HR2903 is -0.028 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2903 star
DSS2 image of HR2903. The red arrow shows the motion of HR2903 during the next 10000 years (-4.67 arcmin in Right Ascension and -5.33 arcmin in declination);

Distance of HR2903 from the Sun and relative movement

HR2903 is distant 518.28 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

158.98 pc
518.28 ly
29 km/s
-0.028 arcsec/year
-0.032 arcsec/year

Spectral properties of HR2903

HR2903 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR2903 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2903. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2903