Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Carina » 


Altitude: -36.4°   Azimuth: 215.1°   Direction: South-West

HR4151 is a variable giant star in the constellation of Carina.

HR4151 visual magnitude is 6.23. Because of its reltive faintness, HR4151 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 HR4151:


HR4151 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -36.4°
Azimuth: 215.1°
Direction: South-West

Celestial coordinates and finder chart of HR4151

HR4151 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 HR4151 are provided in the following table:

10h 34m 12s
-60° 59’ 16”

The simplified sky map below shows the position of HR4151 in the sky:

Finder chart HR4151 star
Simplified finder chart for HR4151.

Visibility of HR4151 from your location

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

HR4151 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4151

The image below is a photograph of HR4151 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 HR4151 is 0.004 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR4151 star
DSS2 image of HR4151. The red arrow shows the motion of HR4151 during the next 100000 years (6.67 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR4151 from the Sun and relative movement

HR4151 is distant 829.52 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

254.45 pc
829.52 ly
-1 km/s
0.004 arcsec/year
-0.003 arcsec/year

Spectral properties of HR4151

HR4151 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4151 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4151. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4151