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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
SunriseRise: 6:55  
clear_day Transit: 12:11  
SunsetSet: 17:29
sunny DaytimeWhat's Visible Now?
All Constellations » Centaurus » 

HR4874

Altitude: -16.0°   Azimuth: 235.0°   Direction: South-West

HR4874 is a double hypergiant star in the constellation of Centaurus.

HR4874 visual magnitude is 4.91. Because of its moderate brightness, HR4874 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR4874 is -0.028 arcsec per year in Right Ascension and -0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4874 star
DSS2 image of HR4874. The red arrow shows the motion of HR4874 during the next 10000 years (-4.67 arcmin in Right Ascension and -3.33 arcmin in declination);

Key facts about HR4874

4.91
Hypergiant

HR4874 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -16.0°
Azimuth: 235.0°
Direction: South-West

Celestial coordinates and finder chart of HR4874

HR4874 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4874 are provided in the following table:

12h 50m 41s
-33° 59’ 57”
302.75°
28.87°
Centaurus

The simplified sky map below shows the position of HR4874 in the sky:

Finder chart HR4874 star
Simplified finder chart for HR4874.

Visibility of HR4874 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 HR4874 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: 124.0°
Max altitude: 4.5°
Azimuth: 236.0°

Distance of HR4874 from the Sun and relative movement

HR4874 is distant 388.56 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

119.19 pc
388.56 ly
4 km/s
-0.028 arcsec/year
-0.02 arcsec/year

Spectral properties of HR4874

HR4874 belongs to spectral class A0 and has a luminosity class of IV corresponding to a hypergiant star.

-0.47
A0IV
10653K

The red dot in the diagram below shows where HR4874 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4874. Attribution: Richard Powell / CC BY-SA

HR4874 star system properties

HR4874 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4874 double sysyem:

4.91
14.91
10
27.6 arcsec

Alternative designations of HR4874

SAO203863
SAO203863