We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support helps us pay the server bills » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Musca » 


Altitude: -39.4°   Azimuth: 202.6°   Direction: South-South-West

HR4538 is a supergiant star in the constellation of Musca.

HR4538 visual magnitude is 4.97. Because of its moderate brightness, HR4538 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 HR4538 is -0.009 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR4538 star
DSS2 image of HR4538. The red arrow shows the motion of HR4538 during the next 100000 years (-15.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Key facts about HR4538


HR4538 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -39.4°
Azimuth: 202.6°
Direction: South-South-West

Celestial coordinates and finder chart of HR4538

HR4538 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 HR4538 are provided in the following table:

11h 49m 56s
-70° 13’ 32”

The simplified sky map below shows the position of HR4538 in the sky:

Finder chart HR4538 star
Simplified finder chart for HR4538.

Visibility of HR4538 from your location

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

HR4538 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4538 from the Sun and relative movement

HR4538 is distant 1,455.36 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

446.43 pc
1,455.36 ly
18 km/s
-0.009 arcsec/year
0.001 arcsec/year

Spectral properties of HR4538

HR4538 belongs to spectral class G6 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR4538 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4538. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4538