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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

18 Orionis

Above the horizon.  Rise: 5:19 | Tran: 12:15 | Set: 19:11
Altitude: 5.9°   Azimuth: 280.8°   Direction: West

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

18 Orionis visual magnitude is 5.56. Because of its faintness, 18 Orionis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of 18 Orionis

Finder chart 18 Orionis star
Simplified finder chart for 18 Orionis.

18 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 18 Orionis are provided in the following table:

05h 16m 04s
+11° 20’ 29”
Image of 18 Orionis star
DSS2 image of 18 Orionis. The red arrow shows the motion of 18 Orionis during the next 100000 years (-15.00 arcmin in Right Ascension and -8.33 arcmin in declination);

Key facts about 18 Orionis


and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where 18 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 18 Orionis. Attribution: Richard Powell / CC BY-SA

Distance of 18 Orionis from the Sun and relative movement

18 Orionis is distant 367.95 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

112.87 pc
367.95 ly
-8 km/s
-0.009 arcsec/year
-0.005 arcsec/year

Alternative designations of 18 Orionis


Visibility of 18 Orionis from your location

Today's 18 Orionis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 78.7°
Max altitude: 49.9°
Azimuth: 281.3°