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 » 

υ1 Cancri (upsilon1 Cancri)

Altitude: 57.8°   Azimuth: 219.9°   Direction: South-West

υ1 Cancri is a hypergiant star in the constellation of Cancer.

υ1 Cancri visual magnitude is 5.75. Because of its reltive faintness, υ1 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 υ1 Cancri:


υ1 Cancri (upsilon1 Cancri) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 57.8°
Azimuth: 219.9°
Direction: South-West

Celestial coordinates and finder chart of υ1 Cancri

υ1 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 υ1 Cancri are provided in the following table:

08h 31m 30s
+24° 04’ 51”

The simplified sky map below shows the position of υ1 Cancri in the sky:

Finder chart υ1 Cancri (upsilon1 Cancri) star
Simplified finder chart for υ1 Cancri (upsilon1 Cancri).

Visibility of υ1 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 υ1 Cancri (upsilon1 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: 65.9°
Max altitude: 62.6°
Azimuth: 294.1°

Digitized Sky Survey image of υ1 Cancri

The image below is a photograph of υ1 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 υ1 Cancri is -0.082 arcsec per year in Right Ascension and -0.044 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of υ1 Cancri (upsilon1 Cancri) star
DSS2 image of υ1 Cancri. The red arrow shows the motion of υ1 Cancri during the next 10000 years (-13.67 arcmin in Right Ascension and -7.33 arcmin in declination);

Distance of υ1 Cancri from the Sun and relative movement

υ1 Cancri is distant 237.09 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

72.73 pc
237.09 ly
19 km/s
-0.082 arcsec/year
-0.044 arcsec/year

Spectral properties of υ1 Cancri

υ1 Cancri belongs to spectral class F0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where υ1 Cancri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of υ1 Cancri. Attribution: Richard Powell / CC BY-SA

Alternative designations of υ1 Cancri

υ1 Cancri
(upsilon1 Cancri)