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: 6:59  
clear_day Transit: 12:48  
SunsetSet: 18:36 south
sunny DaytimeWhat's Visible Now
All Constellations » Canis Minor » 


Altitude: 3.8°   Azimuth: 269.7°   Direction: West

HR2904 is a variable giant star in the constellation of Canis Minor.

HR2904 visual magnitude is 6.55. Because of its reltive faintness, HR2904 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 HR2904:


HR2904 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 3.8°
Azimuth: 269.7°
Direction: West

Celestial coordinates and finder chart of HR2904

HR2904 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 HR2904 are provided in the following table:

07h 34m 45s
+02° 43’ 30”
Canis Minor

The simplified sky map below shows the position of HR2904 in the sky:

Finder chart HR2904 star
Simplified finder chart for HR2904.

Visibility of HR2904 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 HR2904 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: 87.3°
Max altitude: 41.2°
Azimuth: 272.7°

Digitized Sky Survey image of HR2904

The image below is a photograph of HR2904 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 HR2904 is -0.043 arcsec per year in Right Ascension and -0.027 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2904 star
DSS2 image of HR2904. The red arrow shows the motion of HR2904 during the next 10000 years (-7.17 arcmin in Right Ascension and -4.50 arcmin in declination);

Distance of HR2904 from the Sun and relative movement

HR2904 is distant 467.05 light years from the Sun and it is moving far from the Sun at the speed of 46 kilometers per second.

143.27 pc
467.05 ly
46 km/s
-0.043 arcsec/year
-0.027 arcsec/year

Spectral properties of HR2904

HR2904 belongs to spectral class A7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR2904 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2904. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2904