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: 7:02  
clear_day Transit: 12:47  
SunsetSet: 18:32 south
sunny DaytimeWhat's Visible Now
All Constellations » Cancer » 

σ1 Cancri (sigma1 Cancri)

Altitude: 63.8°   Azimuth: 126.9°   Direction: South-East

σ1 Cancri is a multiple main-sequence star in the constellation of Cancer.

σ1 Cancri visual magnitude is 5.66. Because of its reltive faintness, σ1 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 σ1 Cancri:


σ1 Cancri (sigma1 Cancri) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 63.8°
Azimuth: 126.9°
Direction: South-East

Celestial coordinates and finder chart of σ1 Cancri

σ1 Cancri is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of σ1 Cancri are provided in the following table:

08h 52m 34s
+32° 28’ 27”

The simplified sky map below shows the position of σ1 Cancri in the sky:

Finder chart σ1 Cancri (sigma1 Cancri) star
Simplified finder chart for σ1 Cancri (sigma1 Cancri).

Visibility of σ1 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 σ1 Cancri (sigma1 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: 57.5°
Max altitude: 71.0°
Azimuth: 302.5°

Digitized Sky Survey image of σ1 Cancri

The image below is a photograph of σ1 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 σ1 Cancri is -0.003 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 σ1 Cancri (sigma1 Cancri) star
DSS2 image of σ1 Cancri. The red arrow shows the motion of σ1 Cancri during the next 10000 years (-0.50 arcmin in Right Ascension and 2.67 arcmin in declination);

Distance of σ1 Cancri from the Sun and relative movement

σ1 Cancri is distant 203.62 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

62.46 pc
203.62 ly
-14 km/s
-0.003 arcsec/year
0.016 arcsec/year

Spectral properties of σ1 Cancri

σ1 Cancri belongs to spectral class A8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where σ1 Cancri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of σ1 Cancri. Attribution: Richard Powell / CC BY-SA

σ1 Cancri star system properties

σ1 Cancri 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 σ1 Cancri double sysyem:

79 arcsec

Alternative designations of σ1 Cancri

σ1 Cancri
(sigma1 Cancri)