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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: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cetus » 


Altitude: -28.6°   Azimuth: 265.4°   Direction: West

HR159 is a double main-sequence star in the constellation of Cetus.

HR159 visual magnitude is 5.57. Because of its reltive faintness, HR159 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 HR159:


HR159 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.6°
Azimuth: 265.4°
Direction: West

Celestial coordinates and finder chart of HR159

HR159 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 HR159 are provided in the following table:

00h 37m 20s
-24° 46’ 01”

The simplified sky map below shows the position of HR159 in the sky:

Finder chart HR159 star
Simplified finder chart for HR159.

Visibility of HR159 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 HR159 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: 114.8°
Max altitude: 13.8°
Azimuth: 245.2°

Digitized Sky Survey image of HR159

The image below is a photograph of HR159 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 HR159 is 1.39 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.

Image of HR159 star
DSS2 image of HR159. The red arrow shows the motion of HR159 during the next 100 years (2.32 arcmin in Right Ascension and -0.02 arcmin in declination);

Distance of HR159 from the Sun and relative movement

HR159 is distant 50.64 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

15.53 pc
50.64 ly
17 km/s
1.39 arcsec/year
-0.012 arcsec/year

Spectral properties of HR159

HR159 belongs to spectral class G8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR159 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR159. Attribution: Richard Powell / CC BY-SA

HR159 star system properties

HR159 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 HR159 double sysyem:

0.5 arcsec

Alternative designations of HR159