HR2839

Altitude: -42.9° Azimuth: 69.7° Direction: East-North-East

HR2839 is a double supergiant star in the constellation of Canis Major.

HR2839 visual magnitude is 6.05. Because of its reltive faintness, HR2839 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 HR2839:

Color of HR2839 ⬤

Magnitude of HR2839 6.05

Class Supergiant

VISIBILITY RIGHT NOW

HR2839 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -42.9°
Azimuth: 69.7°
Direction: East-North-East

Celestial coordinates and finder chart of HR2839

HR2839 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 HR2839 are provided in the following table:

Right Ascension J2000 07h 25m 19s

Declination J2000 -21° 58’ 58”

Galactic Longitude 236.26°

Galactic Latitude -2.81°

Constellation Canis Major

The simplified sky map below shows the position of HR2839 in the sky:

Simplified finder chart for HR2839.

Visibility of HR2839 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 HR2839 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: 112.0° RISE 11:25

Max altitude: 16.5° TRANSIT 15:22

Azimuth: 248.0° SET 19:19

RIGHT NOW HR2839 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2839

The image below is a photograph of HR2839 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 HR2839 is -0.01 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR2839. The red arrow shows the motion of HR2839 during the next 10000 years (-1.67 arcmin in Right Ascension and 0.50 arcmin in declination);

Distance of HR2839 from the Sun and relative movement

HR2839 is distant 3,165.05 light years from the Sun and it is moving far from the Sun at the speed of 41 kilometers per second.

Distance (parsec) 970.87 pc

Distance (light year) 3,165.05 ly

Heliocentric radial velocity 41 km/s

Proper Motion RA -0.01 arcsec/year

Proper Motion Dec 0.003 arcsec/year

Spectral properties of HR2839

HR2839 belongs to spectral class A8 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -3.89

Spectral Type A8I

Color Index (B-V) 0.23

Temperature of HR2839 7938K

The red dot in the diagram below shows where HR2839 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2839. Attribution: Richard Powell / CC BY-SA

HR2839 star system properties

HR2839 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR2839 double sysyem:

Main star magnitude 6.05

Secondary star magnitude 13.45

Magnitude difference 7.4

Separation 2.4 arcsec

Alternative designations of HR2839

Henry Draper Catalogue HD58585

SAO Catalogue SAO173691

Hipparcos Catalogue HIP36017

Durchmusterung Catalogue BD-21 1925

In Evidence

Other stars in Canis Major