HR28

HR28 is a sub-giant star in the constellation of Cassiopeia.

HR28 visual magnitude is 6.74. Because of its reltive faintness, HR28 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 HR28:

Color of HR28 ⬤

Magnitude of HR28 6.74

Class Sub-giant

VISIBILITY RIGHT NOW HR28 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 23°.

Celestial coordinates and finder chart of HR28

HR28 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 HR28 are provided in the following table:

Right Ascension J2000 00h 10m 29s

Declination J2000 +57° 09’ 56”

Galactic Longitude 117.38°

Galactic Latitude -5.26°

Constellation Cassiopeia

The simplified sky map below shows the position of HR28 in the sky:

Simplified finder chart for HR28.

Visibility of HR28 from your location

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

HR28 is circumpolar and transits at 07:28 UTC (altitude: 84.3°)

Digitized Sky Survey image of HR28

The image below is a photograph of HR28 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 HR28 is 0.023 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR28. The red arrow shows the motion of HR28 during the next 10000 years (3.83 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR28 from the Sun and relative movement

HR28 is distant 500.00 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

Distance (parsec) 153.37 pc

Distance (light year) 500.00 ly

Heliocentric radial velocity 2 km/s

Proper Motion RA 0.023 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR28

HR28 belongs to spectral class B7 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 0.81

Spectral Type B7IV

Color Index (B-V) -0.08

Temperature of HR28 11247K

The red dot in the diagram below shows where HR28 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR28. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR28

Henry Draper Catalogue HD584

SAO Catalogue SAO21162

Hipparcos Catalogue HIP857

Durchmusterung Catalogue BD+56 11

In Evidence

Other stars in Cassiopeia