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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
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sculptor » 


Altitude: -17.9°   Azimuth: 241.7°   Direction: West-South-West

HR57 is a double giant star in the constellation of Sculptor.

HR57 visual magnitude is 5.67. Because of its reltive faintness, HR57 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 HR57:


HR57 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.9°
Azimuth: 241.7°
Direction: West-South-West

Celestial coordinates and finder chart of HR57

HR57 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 HR57 are provided in the following table:

00h 16m 08s
-31° 26’ 47”

The simplified sky map below shows the position of HR57 in the sky:

Finder chart HR57 star
Simplified finder chart for HR57.

Visibility of HR57 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 HR57 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: 121.4°
Max altitude: 7.1°
Azimuth: 238.6°

Digitized Sky Survey image of HR57

The image below is a photograph of HR57 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 HR57 is 0.122 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR57 star
DSS2 image of HR57. The red arrow shows the motion of HR57 during the next 1000 years (2.03 arcmin in Right Ascension and -0.50 arcmin in declination);

Distance of HR57 from the Sun and relative movement

HR57 is distant 426.70 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

130.89 pc
426.70 ly
26 km/s
0.122 arcsec/year
-0.03 arcsec/year

Spectral properties of HR57

HR57 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR57 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR57. Attribution: Richard Powell / CC BY-SA

HR57 star system properties

HR57 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 HR57 double sysyem:

64 arcsec

Alternative designations of HR57