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🌎  Greenwich, United Kingdom [change]


HR4887 is a variable supergiant star in the constellation of Crux.

HR4887 visual magnitude is 5.76. Because of its reltive faintness, HR4887 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 HR4887:

HR4887 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4887

HR4887 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 HR4887 are provided in the following table:

12h 53m 21s
-60° 19’ 42”

The simplified sky map below shows the position of HR4887 in the sky:

Finder chart HR4887 star
Simplified finder chart for HR4887.

Visibility of HR4887 from your location

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

HR4887 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4887

The image below is a photograph of HR4887 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 HR4887 is -0.013 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4887 star
DSS2 image of HR4887. The red arrow shows the motion of HR4887 during the next 10000 years (-2.17 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR4887 from the Sun and relative movement

HR4887 is distant 4,024.69 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

1,234.57 pc
4,024.69 ly
-19 km/s
-0.013 arcsec/year

Spectral properties of HR4887

HR4887 belongs to spectral class B9 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR4887 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4887. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4887