HR748

HR748 is a multiple giant star in the constellation of Andromeda.

HR748 visual magnitude is 5.71. Because of its reltive faintness, HR748 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 HR748:

Color of HR748 ⬤

Magnitude of HR748 5.71

Class Giant

VISIBILITY RIGHT NOW HR748 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 31°.

Celestial coordinates and finder chart of HR748

HR748 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR748 are provided in the following table:

Right Ascension J2000 02h 35m 38s

Declination J2000 +37° 18’ 43”

Galactic Longitude 144.92°

Galactic Latitude -21.07°

Constellation Andromeda

The simplified sky map below shows the position of HR748 in the sky:

Simplified finder chart for HR748.

Visibility of HR748 from your location

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

Today's HR748 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.7° RISE 4:19

Max altitude: 75.8° TRANSIT 15:08

Azimuth: 307.3° SET 2:02

RIGHT NOW HR748 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR748

The image below is a photograph of HR748 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 HR748 is 0.004 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR748. The red arrow shows the motion of HR748 during the next 100000 years (6.67 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of HR748 from the Sun and relative movement

HR748 is distant 676.35 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 207.47 pc

Distance (light year) 676.35 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of HR748

HR748 belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.87

Spectral Type K3III

Color Index (B-V) 1.39

Temperature of HR748 3967K

The red dot in the diagram below shows where HR748 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR748. Attribution: Richard Powell / CC BY-SA

HR748 star system properties

HR748 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 HR748 double sysyem:

Main star magnitude 5.71

Secondary star magnitude 10.91

Magnitude difference 5.2

Separation 18.3 arcsec

Alternative designations of HR748

Henry Draper Catalogue HD16028

SAO Catalogue SAO55684

Hipparcos Catalogue HIP12072

Durchmusterung Catalogue BD+36 519

Aitken Double Star Catalogue ADS1964

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