We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Andromeda » 


Altitude: -5.1°   Azimuth: 340.0°   Direction: North-North-West

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:


HR78 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -5.1°
Azimuth: 340.0°
Direction: North-North-West

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:

00h 20m 24s
+30° 56’ 08”

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

Finder chart HR78 star
Simplified finder chart for HR78.

Visibility of HR78 from your location

Location: Greenwich, United Kingdom edit_location_alt
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 edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.1°
Max altitude: 69.5°
Azimuth: 300.9°

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.

Image of HR78 star
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.

178.57 pc
582.14 ly
4 km/s
0.021 arcsec/year
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.


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

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

Alternative designations of HR78