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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
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All Constellations » Orion » 

57 Orionis

Altitude: 26.4°   Azimuth: 91.0°   Direction: East

57 Orionis is a variable and double main-sequence star in the constellation of Orion.

57 Orionis visual magnitude is 5.92. Because of its reltive faintness, 57 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 57 Orionis:


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

Altitude: 26.4°
Azimuth: 91.0°
Direction: East

Celestial coordinates and finder chart of 57 Orionis

57 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 57 Orionis are provided in the following table:

05h 54m 56s
+19° 44’ 58”

The simplified sky map below shows the position of 57 Orionis in the sky:

Finder chart 57 Orionis star
Simplified finder chart for 57 Orionis.

Visibility of 57 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 57 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: 70.3°
Max altitude: 58.3°
Azimuth: 289.7°

Digitized Sky Survey image of 57 Orionis

The image below is a photograph of 57 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 57 Orionis is -0.003 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of 57 Orionis star
DSS2 image of 57 Orionis. The red arrow shows the motion of 57 Orionis during the next 100000 years (-5.00 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of 57 Orionis from the Sun and relative movement

57 Orionis is distant 1,405.17 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

431.03 pc
1,405.17 ly
7 km/s
-0.003 arcsec/year
-0.004 arcsec/year

Spectral properties of 57 Orionis

57 Orionis belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 57 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 57 Orionis. Attribution: Richard Powell / CC BY-SA

57 Orionis star system properties

57 Orionis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 57 Orionis double sysyem:

0 arcsec

Alternative designations of 57 Orionis