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: 6:49  
clear_day Transit: 12:50  
SunsetSet: 18:50 south
sunny DaytimeWhat's Visible Now
All Constellations » Gemini » 


Altitude: 60.6°   Azimuth: 162.9°   Direction: South-South-East

HR2879 is a double hypergiant star in the constellation of Gemini.

HR2879 visual magnitude is 6.54. Because of its reltive faintness, HR2879 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 HR2879:


HR2879 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 60.6°
Azimuth: 162.9°
Direction: South-South-East

Celestial coordinates and finder chart of HR2879

HR2879 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 HR2879 are provided in the following table:

07h 32m 50s
+22° 53’ 16”

The simplified sky map below shows the position of HR2879 in the sky:

Finder chart HR2879 star
Simplified finder chart for HR2879.

Visibility of HR2879 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 HR2879 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: 67.1°
Max altitude: 61.4°
Azimuth: 292.9°

Digitized Sky Survey image of HR2879

The image below is a photograph of HR2879 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 HR2879 is -0.025 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2879 star
DSS2 image of HR2879. The red arrow shows the motion of HR2879 during the next 10000 years (-4.17 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of HR2879 from the Sun and relative movement

HR2879 is distant 473.84 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

145.35 pc
473.84 ly
30 km/s
-0.025 arcsec/year
-0.012 arcsec/year

Spectral properties of HR2879

HR2879 belongs to spectral class K0 and has a luminosity class of II corresponding to a hypergiant star.


The red dot in the diagram below shows where HR2879 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2879. Attribution: Richard Powell / CC BY-SA

HR2879 star system properties

HR2879 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR2879 double sysyem:

11.5 arcsec

Alternative designations of HR2879