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: 6:59  
clear_day Transit: 12:48  
SunsetSet: 18:36 south
sunny DaytimeWhat's Visible Now
All Constellations » Cancer » 


Altitude: 56.7°   Azimuth: 194.8°   Direction: South-South-West

HR3158 is a main-sequence star in the constellation of Cancer.

HR3158 visual magnitude is 6.15. Because of its reltive faintness, HR3158 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 HR3158:


HR3158 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 56.7°
Azimuth: 194.8°
Direction: South-South-West

Celestial coordinates and finder chart of HR3158

HR3158 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 HR3158 are provided in the following table:

08h 04m 45s
+18° 50’ 31”

The simplified sky map below shows the position of HR3158 in the sky:

Finder chart HR3158 star
Simplified finder chart for HR3158.

Visibility of HR3158 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 HR3158 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: 71.2°
Max altitude: 57.4°
Azimuth: 288.8°

Digitized Sky Survey image of HR3158

The image below is a photograph of HR3158 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 HR3158 is -0.035 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3158 star
DSS2 image of HR3158. The red arrow shows the motion of HR3158 during the next 10000 years (-5.83 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of HR3158 from the Sun and relative movement

HR3158 is distant 298.53 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

91.58 pc
298.53 ly
28 km/s
-0.035 arcsec/year
-0.016 arcsec/year

Spectral properties of HR3158

HR3158 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR3158 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3158. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3158