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public LocationGreenwich, UK
Sunrise: 5:08 
Transit: 13:06 
Sunset: 21:03
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Orion » 

π4 Orionis (pi4 Orionis)

Below the horizon.  Rise: 3:31 | Tran: 9:57 | Set: 16:24
Alt: -10.29°   Az: 67.13°   Direction: East-North-East

π4 Orionis is a variable giant star of spectral class B2 in the constellation of Orion.

π4 Orionis visual magnitude is 3.69. Because of its moderate brightness, π4 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 π4 Orionis (pi4 Orionis) star
DSS2 image of π4 Orionis. The red arrow shows the motion of π4 Orionis during the next 100000 years (-1.67 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates


04h 52m 30s
+05° 38’ 42”
16h 22m 32s
21h 15m 03s


04h 51m 12s
+05° 36’ 18”

Galactic Coordinates


Finder Chart

Finder chart π4 Orionis (pi4 Orionis) star
Simplified finder chart for π4 Orionis (pi4 Orionis).

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where π4 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of π4 Orionis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

π4 Orionis is distant 1,258.69 light years from the Sun and it is moving far from the Sun at the speed of 23 kilometers per second.

23 km/s
-0.001 arcsec/y

Alternative Designations

π4 Orionis
(pi4 Orionis)

Visibility from Your Location

Today's π4 Orionis (pi4 Orionis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 84.4°
Max altitude: 44.2°
Azimuth: 275.6°