Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Orion » 

11 Orionis

Altitude: 13.0°   Azimuth: 278.5°   Direction: West

11 Orionis is a variable hypergiant star in the constellation of Orion.

11 Orionis visual magnitude is 4.68. Because of its moderate brightness, 11 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 11 Orionis:


11 Orionis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 13.0°
Azimuth: 278.5°
Direction: West

Celestial coordinates and finder chart of 11 Orionis

11 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 11 Orionis are provided in the following table:

05h 04m 34s
+15° 24’ 15”

The simplified sky map below shows the position of 11 Orionis in the sky:

Finder chart 11 Orionis star
Simplified finder chart for 11 Orionis.

Visibility of 11 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 11 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: 74.6°
Max altitude: 53.9°
Azimuth: 285.4°
11 Orionis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 11 Orionis

The image below is a photograph of 11 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 11 Orionis is 0.016 arcsec per year in Right Ascension and -0.034 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 11 Orionis star
DSS2 image of 11 Orionis. The red arrow shows the motion of 11 Orionis during the next 10000 years (2.67 arcmin in Right Ascension and -5.67 arcmin in declination);

Distance of 11 Orionis from the Sun and relative movement

11 Orionis is distant 400.00 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

122.70 pc
400.00 ly
17 km/s
0.016 arcsec/year
-0.034 arcsec/year

Spectral properties of 11 Orionis

11 Orionis belongs to spectral class A0 11 Orionis is also a Si chemically peculiar star.


The red dot in the diagram below shows where 11 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 11 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 11 Orionis