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: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
sleep NighttimeWhat's Visible Now
All Constellations » Crater » 

HR4539

Altitude: -48.3°   Azimuth: 318.5°   Direction: North-West

HR4539 is a hypergiant star in the constellation of Crater.

HR4539 visual magnitude is 6.13. Because of its reltive faintness, HR4539 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 HR4539:

6.13
Hypergiant

HR4539 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -48.3°
Azimuth: 318.5°
Direction: North-West

Celestial coordinates and finder chart of HR4539

HR4539 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 HR4539 are provided in the following table:

11h 50m 19s
-15° 51’ 50”
282.11°
44.52°
Crater

The simplified sky map below shows the position of HR4539 in the sky:

Finder chart HR4539 star
Simplified finder chart for HR4539.

Visibility of HR4539 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 HR4539 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: 105.9°
Max altitude: 22.7°
Azimuth: 254.1°

Digitized Sky Survey image of HR4539

The image below is a photograph of HR4539 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 HR4539 is -0.013 arcsec per year in Right Ascension and 0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4539 star
DSS2 image of HR4539. The red arrow shows the motion of HR4539 during the next 10000 years (-2.17 arcmin in Right Ascension and 1.50 arcmin in declination);

Distance of HR4539 from the Sun and relative movement

HR4539 is distant 672.16 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

206.19 pc
672.16 ly
-4 km/s
-0.013 arcsec/year
0.009 arcsec/year

Spectral properties of HR4539

HR4539 belongs to spectral class K0

-0.44
K0
4866K

The red dot in the diagram below shows where HR4539 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4539. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4539

SAO156926
SAO156926