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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sleep NighttimeWhat's Visible Now?
All Constellations » Virgo » 


Altitude: 12.2°   Azimuth: 104.8°   Direction: East-South-East

HR4555 is a hypergiant star in the constellation of Virgo.

HR4555 visual magnitude is 6.3. Because of its reltive faintness, HR4555 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 HR4555:


HR4555 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 12.2°
Azimuth: 104.8°
Direction: East-South-East

Celestial coordinates and finder chart of HR4555

HR4555 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 HR4555 are provided in the following table:

11h 53m 50s
+00° 33’ 06”

The simplified sky map below shows the position of HR4555 in the sky:

Finder chart HR4555 star
Simplified finder chart for HR4555.

Visibility of HR4555 from your location

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

Today's HR4555 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.4°
Max altitude: 39.1°
Azimuth: 270.6°

Digitized Sky Survey image of HR4555

The image below is a photograph of HR4555 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 HR4555 is -0.039 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4555 star
DSS2 image of HR4555. The red arrow shows the motion of HR4555 during the next 10000 years (-6.50 arcmin in Right Ascension and -1.17 arcmin in declination);

Distance of HR4555 from the Sun and relative movement

HR4555 is distant 430.08 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

131.93 pc
430.08 ly
10 km/s
-0.039 arcsec/year
-0.007 arcsec/year

Spectral properties of HR4555

HR4555 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4555 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4555. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4555