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🌎  Greenwich, United Kingdom [change]


HR4749 is a multiple hypergiant star in the constellation of Crux.

HR4749 visual magnitude is 6.15. Because of its reltive faintness, HR4749 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 HR4749:

HR4749 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4749

HR4749 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 HR4749 are provided in the following table:

12h 28m 33s
-56° 24’ 28”

The simplified sky map below shows the position of HR4749 in the sky:

Finder chart HR4749 star
Simplified finder chart for HR4749.

Visibility of HR4749 from your location

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

HR4749 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4749

The image below is a photograph of HR4749 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 HR4749 is -0.24 arcsec per year in Right Ascension and -0.22 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4749 star
DSS2 image of HR4749. The red arrow shows the motion of HR4749 during the next 1000 years (-4.00 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of HR4749 from the Sun and relative movement

HR4749 is distant 137.67 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

42.23 pc
137.67 ly
8 km/s
-0.24 arcsec/year
-0.22 arcsec/year

Spectral properties of HR4749

HR4749 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4749 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4749. Attribution: Richard Powell / CC BY-SA

HR4749 star system properties

HR4749 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 HR4749 double sysyem:

49 arcsec

Alternative designations of HR4749