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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: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
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All Constellations » Eridanus » 


Altitude: -33.6°   Azimuth: 114.9°   Direction: East-South-East

HR1157 is a double giant star in the constellation of Eridanus.

HR1157 visual magnitude is 6.45. Because of its reltive faintness, HR1157 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 HR1157:


HR1157 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -33.6°
Azimuth: 114.9°
Direction: East-South-East

Celestial coordinates and finder chart of HR1157

HR1157 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 HR1157 are provided in the following table:

03h 44m 06s
-40° 39’ 37”

The simplified sky map below shows the position of HR1157 in the sky:

Finder chart HR1157 star
Simplified finder chart for HR1157.

Visibility of HR1157 from your location

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

HR1157 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR1157

The image below is a photograph of HR1157 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 HR1157 is 0.008 arcsec per year in Right Ascension and -0.086 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1157 star
DSS2 image of HR1157. The red arrow shows the motion of HR1157 during the next 10000 years (1.33 arcmin in Right Ascension and -14.33 arcmin in declination);

Distance of HR1157 from the Sun and relative movement

HR1157 is distant 302.69 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

92.85 pc
302.69 ly
19 km/s
0.008 arcsec/year
-0.086 arcsec/year

Spectral properties of HR1157

HR1157 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR1157 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1157. Attribution: Richard Powell / CC BY-SA

HR1157 star system properties

HR1157 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR1157 double sysyem:

5.1 arcsec

Alternative designations of HR1157