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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
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 

π5 Orionis (pi5 Orionis)

Altitude: 6.2°   Azimuth: 266.1°   Direction: West

π5 Orionis is a variable giant star in the constellation of Orion.

π5 Orionis visual magnitude is 3.72. Because of its moderate brightness, π5 Orionis 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 π5 Orionis:


π5 Orionis (pi5 Orionis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 6.2°
Azimuth: 266.1°
Direction: West

Celestial coordinates and finder chart of π5 Orionis

π5 Orionis 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 π5 Orionis are provided in the following table:

04h 54m 15s
+02° 26’ 26”

The simplified sky map below shows the position of π5 Orionis in the sky:

Finder chart π5 Orionis (pi5 Orionis) star
Simplified finder chart for π5 Orionis (pi5 Orionis).

Visibility of π5 Orionis 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 π5 Orionis (pi5 Orionis) 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: 87.6°
Max altitude: 41.0°
Azimuth: 272.4°

Digitized Sky Survey image of π5 Orionis

The image below is a photograph of π5 Orionis 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 π5 Orionis is 0 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of π5 Orionis (pi5 Orionis) star
DSS2 image of π5 Orionis. The red arrow shows the motion of π5 Orionis during the next 100000 years (0.00 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of π5 Orionis from the Sun and relative movement

π5 Orionis is distant 1,341.56 light years from the Sun and it is moving far from the Sun at the speed of 23 kilometers per second.

411.52 pc
1,341.56 ly
23 km/s

Spectral properties of π5 Orionis

π5 Orionis belongs to spectral class B3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where π5 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of π5 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of π5 Orionis

π5 Orionis
(pi5 Orionis)