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🌎  Greenwich, United Kingdom [change]

HR4788

HR4788 is a double main-sequence star in the constellation of Centaurus.

HR4788 visual magnitude is 5.77. Because of its reltive faintness, HR4788 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 HR4788:

5.77
Main-sequence
HR4788 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4788

HR4788 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4788 are provided in the following table:

12h 34m 42s
-44° 40’ 23”
299.8°
18.1°
Centaurus

The simplified sky map below shows the position of HR4788 in the sky:

Finder chart HR4788 star
Simplified finder chart for HR4788.

Visibility of HR4788 from your location

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

HR4788 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4788

The image below is a photograph of HR4788 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 HR4788 is -0.083 arcsec per year in Right Ascension and -0.215 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4788 star
DSS2 image of HR4788. The red arrow shows the motion of HR4788 during the next 1000 years (-1.38 arcmin in Right Ascension and -3.58 arcmin in declination);

Distance of HR4788 from the Sun and relative movement

HR4788 is distant 92.48 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

28.37 pc
92.48 ly
18 km/s
-0.083 arcsec/year
-0.215 arcsec/year

Spectral properties of HR4788

HR4788 belongs to spectral class G1 and has a luminosity class of V corresponding to a main-sequence star.

3.51
G1V
5602K

The red dot in the diagram below shows where HR4788 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4788. Attribution: Richard Powell / CC BY-SA

HR4788 star system properties

HR4788 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4788 double sysyem:

5.77
9.77
4
1 arcsec

Alternative designations of HR4788

SAO223527
SAO223527