Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Orion » 

16 Orionis

16 Orionis is a variable and multiple star in the constellation of Orion.

16 Orionis visual magnitude is 5.43. Because of its reltive faintness, 16 Orionis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 16 Orionis:

16 Orionis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of 16 Orionis

16 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 16 Orionis are provided in the following table:

05h 09m 19s
+09° 49’ 45”

The simplified sky map below shows the position of 16 Orionis in the sky:

Finder chart 16 Orionis star
Simplified finder chart for 16 Orionis.

Visibility of 16 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 16 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: 80.2°
Max altitude: 48.3°
Azimuth: 279.8°
16 Orionis is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 16 Orionis

The image below is a photograph of 16 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 16 Orionis is 0.064 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 16 Orionis star
DSS2 image of 16 Orionis. The red arrow shows the motion of 16 Orionis during the next 10000 years (10.67 arcmin in Right Ascension and -1.17 arcmin in declination);

Distance of 16 Orionis from the Sun and relative movement

16 Orionis is distant 175.84 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

53.94 pc
175.84 ly
37 km/s
0.064 arcsec/year
-0.007 arcsec/year

Spectral properties of 16 Orionis

16 Orionis belongs to spectral class A2


The red dot in the diagram below shows where 16 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 16 Orionis. Attribution: Richard Powell / CC BY-SA

16 Orionis star system properties

16 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 16 Orionis double sysyem:

168 arcsec

Alternative designations of 16 Orionis