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: 6:57  
clear_day Transit: 12:48  
SunsetSet: 18:39 south
sleep NighttimeWhat's Visible Now
All Constellations » Sculptor » 


Altitude: 8.9°   Azimuth: 181.9°   Direction: South

HR138 is a giant star in the constellation of Sculptor.

HR138 visual magnitude is 5.55. Because of its reltive faintness, HR138 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 HR138:


HR138 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 8.9°
Azimuth: 181.9°
Direction: South

Celestial coordinates and finder chart of HR138

HR138 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 HR138 are provided in the following table:

00h 33m 41s
-29° 33’ 29”

The simplified sky map below shows the position of HR138 in the sky:

Finder chart HR138 star
Simplified finder chart for HR138.

Visibility of HR138 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 HR138 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: 119.6°
Max altitude: 9.0°
Azimuth: 240.4°

Digitized Sky Survey image of HR138

The image below is a photograph of HR138 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 HR138 is -0.026 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR138 star
DSS2 image of HR138. The red arrow shows the motion of HR138 during the next 10000 years (-4.33 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR138 from the Sun and relative movement

HR138 is distant 496.95 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

152.44 pc
496.95 ly
-9 km/s
-0.026 arcsec/year
-0.03 arcsec/year

Spectral properties of HR138

HR138 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 HR138 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR138. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR138