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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sunny DaytimeWhat's Visible Now?
All Constellations » Cancer » 

φ1 Cancri (phi1 Cancri)

Altitude: 7.5°   Azimuth: 53.7°   Direction: North-East

φ1 Cancri is a double giant star in the constellation of Cancer.

φ1 Cancri visual magnitude is 5.57. Because of its reltive faintness, φ1 Cancri 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 φ1 Cancri is -0.033 arcsec per year in Right Ascension and -0.114 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of φ1 Cancri (phi1 Cancri) star
DSS2 image of φ1 Cancri. The red arrow shows the motion of φ1 Cancri during the next 1000 years (-0.55 arcmin in Right Ascension and -1.90 arcmin in declination);

Key facts about φ1 Cancri


φ1 Cancri (phi1 Cancri) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 7.5°
Azimuth: 53.7°
Direction: North-East

Celestial coordinates and finder chart of φ1 Cancri

φ1 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 φ1 Cancri are provided in the following table:

08h 26m 27s
+27° 53’ 36”

The simplified sky map below shows the position of φ1 Cancri in the sky:

Finder chart φ1 Cancri (phi1 Cancri) star
Simplified finder chart for φ1 Cancri (phi1 Cancri).

Visibility of φ1 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 φ1 Cancri (phi1 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: 62.1°
Max altitude: 66.4°
Azimuth: 297.9°

Distance of φ1 Cancri from the Sun and relative movement

φ1 Cancri is distant 398.05 light years from the Sun and it is moving far from the Sun at the speed of 24 kilometers per second.

122.10 pc
398.05 ly
24 km/s
-0.033 arcsec/year
-0.114 arcsec/year

Spectral properties of φ1 Cancri

φ1 Cancri belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where φ1 Cancri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of φ1 Cancri. Attribution: Richard Powell / CC BY-SA

φ1 Cancri star system properties

φ1 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 φ1 Cancri double sysyem:

130.6 arcsec

Alternative designations of φ1 Cancri

φ1 Cancri
(phi1 Cancri)