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🌎  Greenwich, United Kingdom [change]

HR4551

HR4551 is a multiple main-sequence star in the constellation of Centaurus.

HR4551 visual magnitude is 5.57. Because of its reltive faintness, HR4551 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 HR4551:

5.57
Main-sequence
HR4551 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4551

HR4551 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 HR4551 are provided in the following table:

11h 52m 10s
-56° 59’ 16”
294.89°
4.96°
Centaurus

The simplified sky map below shows the position of HR4551 in the sky:

Finder chart HR4551 star
Simplified finder chart for HR4551.

Visibility of HR4551 from your location

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

HR4551 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4551

The image below is a photograph of HR4551 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 HR4551 is -0.119 arcsec per year in Right Ascension and 0.033 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4551 star
DSS2 image of HR4551. The red arrow shows the motion of HR4551 during the next 1000 years (-1.98 arcmin in Right Ascension and 0.55 arcmin in declination);

Distance of HR4551 from the Sun and relative movement

HR4551 is distant 340.65 light years from the Sun and it is moving far from the Sun at the speed of 23 kilometers per second.

104.49 pc
340.65 ly
23 km/s
-0.119 arcsec/year
0.033 arcsec/year

Spectral properties of HR4551

HR4551 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.

0.47
A2V
9328K

The red dot in the diagram below shows where HR4551 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4551. Attribution: Richard Powell / CC BY-SA

HR4551 star system properties

HR4551 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 HR4551 double sysyem:

5.57
10.87
5.3
54.6 arcsec

Alternative designations of HR4551

SAO239443
SAO239443