HR979

HR979 is a double main-sequence star in the constellation of Perseus.

HR979 visual magnitude is 6.45. Because of its reltive faintness, HR979 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 HR979:

Color of HR979 ⬤

Magnitude of HR979 6.45

Class Main-sequence

VISIBILITY RIGHT NOW HR979 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 16°.

Celestial coordinates and finder chart of HR979

HR979 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 HR979 are provided in the following table:

Right Ascension J2000 03h 17m 11s

Declination J2000 +40° 28’ 59”

Galactic Longitude 150.73°

Galactic Latitude -14.39°

Constellation Perseus

The simplified sky map below shows the position of HR979 in the sky:

Simplified finder chart for HR979.

Visibility of HR979 from your location

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

HR979 is circumpolar and transits at 10:30 UTC (altitude: 79.0°)

Digitized Sky Survey image of HR979

The image below is a photograph of HR979 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 HR979 is 0.015 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR979. The red arrow shows the motion of HR979 during the next 10000 years (2.50 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of HR979 from the Sun and relative movement

HR979 is distant 704.10 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 215.98 pc

Distance (light year) 704.10 ly

Heliocentric radial velocity -8 km/s

Proper Motion RA 0.015 arcsec/year

Proper Motion Dec -0.023 arcsec/year

Spectral properties of HR979

HR979 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star. HR979 is also a Si chemically peculiar star.

Absolute magnitude -0.22

Spectral Type B9V

Color Index (B-V)

Temperature of HR979 10125K

The red dot in the diagram below shows where HR979 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR979. Attribution: Richard Powell / CC BY-SA

HR979 star system properties

HR979 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 HR979 double sysyem:

Main star magnitude 6.45

Secondary star magnitude 7.35

Magnitude difference 0.9

Separation 3.8 arcsec

Alternative designations of HR979

Henry Draper Catalogue HD20283

SAO Catalogue SAO38700

Hipparcos Catalogue HIP15282

Durchmusterung Catalogue BD+39 743

Aitken Double Star Catalogue ADS2443

In Evidence

Other stars in Perseus