HR2678

HR2678 is a variable and multiple hypergiant star in the constellation of Canis Major.

HR2678 visual magnitude is 5.39. Because of its reltive faintness, HR2678 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 HR2678:

Color of HR2678 ⬤

Magnitude of HR2678 5.39

Class Hypergiant

VISIBILITY RIGHT NOW HR2678 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR2678

HR2678 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 HR2678 are provided in the following table:

Right Ascension J2000 07h 06m 40s

Declination J2000 -11° 17’ 39”

Galactic Longitude 224.71°

Galactic Latitude -1.79°

Constellation Canis Major

The simplified sky map below shows the position of HR2678 in the sky:

Simplified finder chart for HR2678.

Visibility of HR2678 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 HR2678 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: 101.3° RISE 10:31

Max altitude: 27.2° TRANSIT 15:31

Azimuth: 258.7° SET 20:31

RIGHT NOW HR2678 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2678

The image below is a photograph of HR2678 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 HR2678 is -0.011 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR2678. The red arrow shows the motion of HR2678 during the next 10000 years (-1.83 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of HR2678 from the Sun and relative movement

HR2678 is distant 2,834.78 light years from the Sun and it is moving far from the Sun at the speed of 31 kilometers per second.

Distance (parsec) 869.57 pc

Distance (light year) 2,834.78 ly

Heliocentric radial velocity 31 km/s

Proper Motion RA -0.011 arcsec/year

Proper Motion Dec -0.005 arcsec/year

Spectral properties of HR2678

HR2678 belongs to spectral class B0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude -4.31

Spectral Type B0IV

Color Index (B-V) 0.05

Temperature of HR2678 9542K

The red dot in the diagram below shows where HR2678 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2678. Attribution: Richard Powell / CC BY-SA

HR2678 star system properties

HR2678 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 HR2678 double sysyem:

Main star magnitude 5.39

Secondary star magnitude 6.69

Magnitude difference 1.3

Separation 0.5 arcsec

Alternative designations of HR2678

Henry Draper Catalogue HD53974

SAO Catalogue SAO152394

Hipparcos Catalogue HIP34301

Durchmusterung Catalogue BD-11 1790

General Catalogue of Variable Stars FN CMa

Aitken Double Star Catalogue ADS5795

In Evidence

Other stars in Canis Major