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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
SunriseRise: 6:44  
clear_day Transit: 12:10  
SunsetSet: 17:38
sunny DaytimeWhat's Visible Now?
All Constellations » Cancer » 


Altitude: 7.9°   Azimuth: 61.7°   Direction: East-North-East

HR3127 is a double giant star in the constellation of Cancer.

HR3127 visual magnitude is 6.34. Because of its reltive faintness, HR3127 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR3127 is -0.026 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3127 star
DSS2 image of HR3127. The red arrow shows the motion of HR3127 during the next 10000 years (-4.33 arcmin in Right Ascension and -4.00 arcmin in declination);

Key facts about HR3127


HR3127 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 7.9°
Azimuth: 61.7°
Direction: East-North-East

Celestial coordinates and finder chart of HR3127

HR3127 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 HR3127 are provided in the following table:

08h 01m 00s
+23° 34’ 59”

The simplified sky map below shows the position of HR3127 in the sky:

Finder chart HR3127 star
Simplified finder chart for HR3127.

Visibility of HR3127 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 HR3127 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: 66.4°
Max altitude: 62.1°
Azimuth: 293.6°

Distance of HR3127 from the Sun and relative movement

HR3127 is distant 275.57 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

84.53 pc
275.57 ly
25 km/s
-0.026 arcsec/year
-0.024 arcsec/year

Spectral properties of HR3127

HR3127 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 HR3127 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3127. Attribution: Richard Powell / CC BY-SA

HR3127 star system properties

HR3127 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR3127 double sysyem:

2.3 arcsec

Alternative designations of HR3127