HR78

HR78 is a variable main-sequence star in the constellation of Andromeda.

HR78 visual magnitude is 5.9. Because of its reltive faintness, HR78 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 HR78:

Color of HR78 ⬤

Magnitude of HR78 5.9

Class Main-sequence

VISIBILITY RIGHT NOW HR78 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR78

HR78 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 HR78 are provided in the following table:

Right Ascension J2000 00h 20m 24s

Declination J2000 +30° 56’ 08”

Galactic Longitude 115.13°

Galactic Latitude -31.47°

Constellation Andromeda

The simplified sky map below shows the position of HR78 in the sky:

Simplified finder chart for HR78.

Visibility of HR78 from your location

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

Today's HR78 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.1° RISE 2:53

Max altitude: 69.5° TRANSIT 12:05

Azimuth: 300.9° SET 21:18

RIGHT NOW HR78 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR78

The image below is a photograph of HR78 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 HR78 is 0.021 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR78. The red arrow shows the motion of HR78 during the next 10000 years (3.50 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR78 from the Sun and relative movement

HR78 is distant 582.14 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 178.57 pc

Distance (light year) 582.14 ly

Heliocentric radial velocity 4 km/s

Proper Motion RA 0.021 arcsec/year

Proper Motion Dec 0.004 arcsec/year

Spectral properties of HR78

HR78 belongs to spectral class B7 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.36

Spectral Type B7V

Color Index (B-V) -0.1

Temperature of HR78 11573K

The red dot in the diagram below shows where HR78 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR78. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR78

Henry Draper Catalogue HD1606

SAO Catalogue SAO53820

Hipparcos Catalogue HIP1630

Durchmusterung Catalogue BD+30 42

General Catalogue of Variable Stars 128

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In Evidence

Other stars in Andromeda