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: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Cancer » 

μ1 Cancri (mu1 Cancri)

Altitude: 53.1°   Azimuth: 130.1°   Direction: South-East

μ1 Cancri is a variable giant star in the constellation of Cancer.

μ1 Cancri visual magnitude is 5.99. Because of its reltive faintness, μ1 Cancri 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 μ1 Cancri:


μ1 Cancri (mu1 Cancri) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 53.1°
Azimuth: 130.1°
Direction: South-East

Celestial coordinates and finder chart of μ1 Cancri

μ1 Cancri 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 μ1 Cancri are provided in the following table:

08h 06m 18s
+22° 38’ 08”

The simplified sky map below shows the position of μ1 Cancri in the sky:

Finder chart μ1 Cancri (mu1 Cancri) star
Simplified finder chart for μ1 Cancri (mu1 Cancri).

Visibility of μ1 Cancri 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 μ1 Cancri (mu1 Cancri) 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: 67.4°
Max altitude: 61.2°
Azimuth: 292.6°
μ1 Cancri (mu1 Cancri) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of μ1 Cancri

The image below is a photograph of μ1 Cancri 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 μ1 Cancri is -0.008 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of μ1 Cancri (mu1 Cancri) star
DSS2 image of μ1 Cancri. The red arrow shows the motion of μ1 Cancri during the next 100000 years (-13.33 arcmin in Right Ascension and -8.33 arcmin in declination);

Distance of μ1 Cancri from the Sun and relative movement

μ1 Cancri is distant 625.72 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

191.94 pc
625.72 ly
26 km/s
-0.008 arcsec/year
-0.005 arcsec/year

Spectral properties of μ1 Cancri

μ1 Cancri belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where μ1 Cancri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of μ1 Cancri. Attribution: Richard Powell / CC BY-SA

Alternative designations of μ1 Cancri

μ1 Cancri
(mu1 Cancri)