Your guide to the Solar System and the night sky
Latest Perseverance Images received 5 hours 26 mins ago for Sol274, Sol272
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]


HR4778 is a variable main-sequence star in the constellation of Corvus.

HR4778 visual magnitude is 6.26. Because of its reltive faintness, HR4778 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 HR4778:

HR4778 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 16°.

Celestial coordinates and finder chart of HR4778

HR4778 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4778 are provided in the following table:

12h 33m 22s
-19° 47’ 30”

The simplified sky map below shows the position of HR4778 in the sky:

Finder chart HR4778 star
Simplified finder chart for HR4778.

Visibility of HR4778 from your location

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

Today's HR4778 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 109.8°
Max altitude: 18.7°
Azimuth: 250.2°
HR4778 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4778

The image below is a photograph of HR4778 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 HR4778 is -0.013 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4778 star
DSS2 image of HR4778. The red arrow shows the motion of HR4778 during the next 10000 years (-2.17 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR4778 from the Sun and relative movement

HR4778 is distant 432.36 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

132.63 pc
432.36 ly
5 km/s
-0.013 arcsec/year
-0.002 arcsec/year

Spectral properties of HR4778

HR4778 belongs to spectral class F2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4778 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4778. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4778