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public LocationGreenwich, UK
Sunrise: 5:15 
Transit: 13:06 
Sunset: 20:56
sunny   (Daytime)   What's Visible Now?
All Constellations » Orion » 

π1 Orionis (pi1 Orionis)

Above the horizon.  Rise: 2:52 | Tran: 9:42 | Set: 16:31
Alt: 45.43°   Az: 150.53°   Direction: South-South-East

π1 Orionis is a multiple hypergiant star of spectral class A0 in the constellation of Orion.

π1 Orionis visual magnitude is 4.65. Because of its moderate brightness, π1 Orionis is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of π1 Orionis (pi1 Orionis) star
DSS2 image of π1 Orionis. The red arrow shows the motion of π1 Orionis during the next 1000 years (0.77 arcmin in Right Ascension and -2.20 arcmin in declination);

Celestial Coordinates


04h 56m 14s
+10° 11’ 19”
22h 37m 51s
03h 34m 06s


04h 54m 53s
+10° 09’ 02”

Galactic Coordinates


Finder Chart

Finder chart π1 Orionis (pi1 Orionis) star
Simplified finder chart for π1 Orionis (pi1 Orionis).

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where π1 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of π1 Orionis. Attribution: Richard Powell / CC BY-SA

Star System Properties

π1 Orionis 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 π1 Orionis double sysyem:

171.6 arcsec

Distance, Radial Speed, Proper Motion

π1 Orionis is distant 120.56 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

13 km/s
0.046 arcsec/y

Alternative Designations

π1 Orionis
(pi1 Orionis)

Visibility from Your Location

Today's π1 Orionis (pi1 Orionis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 79.8°
Max altitude: 48.7°
Azimuth: 280.2°