HR2748

HR2748 is a variable and double giant star in the constellation of Puppis.

HR2748 visual magnitude is 5.1. Because of its reltive faintness, HR2748 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 HR2748:

Color of HR2748 ⬤

Magnitude of HR2748 5.1

Class Giant

VISIBILITY RIGHT NOW HR2748 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR2748

HR2748 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2748 are provided in the following table:

Right Ascension J2000 07h 13m 32s

Declination J2000 -44° 38’ 22”

Galactic Longitude 255.77°

Galactic Latitude -15.04°

Constellation Puppis

The simplified sky map below shows the position of HR2748 in the sky:

Simplified finder chart for HR2748.

Visibility of HR2748 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR2748 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR2748

The image below is a photograph of HR2748 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 HR2748 is 0.114 arcsec per year in Right Ascension and 0.33 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR2748. The red arrow shows the motion of HR2748 during the next 1000 years (1.90 arcmin in Right Ascension and 5.50 arcmin in declination);

Distance of HR2748 from the Sun and relative movement

HR2748 is distant 198.06 light years from the Sun and it is moving far from the Sun at the speed of 53 kilometers per second.

Distance (parsec) 60.75 pc

Distance (light year) 198.06 ly

Heliocentric radial velocity 53 km/s

Proper Motion RA 0.114 arcsec/year

Proper Motion Dec 0.33 arcsec/year

Spectral properties of HR2748

HR2748 belongs to spectral class M5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.18

Spectral Type M5III

Color Index (B-V) 1.56

Temperature of HR2748 3705K

The red dot in the diagram below shows where HR2748 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2748. Attribution: Richard Powell / CC BY-SA

HR2748 star system properties

HR2748 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 HR2748 double sysyem:

Main star magnitude 5.1

Secondary star magnitude 11.5

Magnitude difference 6.4

Separation 62 arcsec

Alternative designations of HR2748

Henry Draper Catalogue HD56096

SAO Catalogue SAO218549

Hipparcos Catalogue HIP34922

Durchmusterung Catalogue CD-44 3227

General Catalogue of Variable Stars L2 Pup

In Evidence

Other stars in Puppis