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: 6:46  
clear_day Transit: 12:51  
SunsetSet: 18:55 south
sleep NighttimeWhat's Visible Now
All Constellations » Canis Minor » 


Altitude: 29.0°   Azimuth: 110.2°   Direction: East-South-East

HR2840 is a sub-giant star in the constellation of Canis Minor.

HR2840 visual magnitude is 6.41. Because of its reltive faintness, HR2840 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 HR2840:


HR2840 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 29.0°
Azimuth: 110.2°
Direction: East-South-East

Celestial coordinates and finder chart of HR2840

HR2840 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 HR2840 are provided in the following table:

07h 26m 41s
+11° 00’ 33”
Canis Minor

The simplified sky map below shows the position of HR2840 in the sky:

Finder chart HR2840 star
Simplified finder chart for HR2840.

Visibility of HR2840 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 HR2840 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: 79.0°
Max altitude: 49.5°
Azimuth: 281.0°

Digitized Sky Survey image of HR2840

The image below is a photograph of HR2840 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 HR2840 is 0.009 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR2840 star
DSS2 image of HR2840. The red arrow shows the motion of HR2840 during the next 100000 years (15.00 arcmin in Right Ascension and -3.33 arcmin in declination);

Distance of HR2840 from the Sun and relative movement

HR2840 is distant 1,263.57 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

387.60 pc
1,263.57 ly
29 km/s
0.009 arcsec/year
-0.002 arcsec/year

Spectral properties of HR2840

HR2840 belongs to spectral class B6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR2840 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2840. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2840