We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sunny DaytimeWhat's Visible Now?
All Constellations » Centaurus » 

φ Centauri (phi Centauri)

Altitude: -19.8°   Azimuth: 226.2°   Direction: South-West

φ Centauri is a variable sub-giant star in the constellation of Centaurus.

φ Centauri visual magnitude is 3.83. Because of its moderate brightness, φ Centauri should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about φ Centauri:


φ Centauri (phi Centauri) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.8°
Azimuth: 226.2°
Direction: South-West

Celestial coordinates and finder chart of φ Centauri

φ Centauri is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of φ Centauri are provided in the following table:

13h 58m 16s
-42° 06’ 02”

The simplified sky map below shows the position of φ Centauri in the sky:

Finder chart φ Centauri (phi Centauri) star
Simplified finder chart for φ Centauri (phi Centauri).

Visibility of φ Centauri from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

φ Centauri (phi Centauri) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of φ Centauri

The image below is a photograph of φ Centauri 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 φ Centauri is -0.024 arcsec per year in Right Ascension and -0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of φ Centauri (phi Centauri) star
DSS2 image of φ Centauri. The red arrow shows the motion of φ Centauri during the next 10000 years (-4.00 arcmin in Right Ascension and -3.50 arcmin in declination);

Distance of φ Centauri from the Sun and relative movement

φ Centauri is distant 465.05 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

142.65 pc
465.05 ly
6 km/s
-0.024 arcsec/year
-0.021 arcsec/year

Spectral properties of φ Centauri

φ Centauri belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where φ Centauri is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of φ Centauri

φ Centauri
(phi Centauri)