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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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Perseus » 

Atik - ο Persei (omicron Persei)

Altitude: 14.9°   Azimuth: 303.7°   Direction: West-North-West

Atik, also designated as ο Persei (omicron Persei), is a variable and double giant star in the constellation of Perseus.

Atik visual magnitude is 3.83. Because of its moderate brightness, Atik 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 Atik:


Atik - ο Persei (omicron Persei) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 14.9°
Azimuth: 303.7°
Direction: West-North-West

Celestial coordinates and finder chart of Atik

Atik is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Atik are provided in the following table:

03h 44m 19s
+32° 17’ 17”

The simplified sky map below shows the position of Atik in the sky:

Finder chart Atik - ο Persei (omicron Persei) star
Simplified finder chart for Atik - ο Persei (omicron Persei).

Visibility of Atik 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 Atik - ο Persei (omicron Persei) 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: 57.7°
Max altitude: 70.8°
Azimuth: 302.3°

Digitized Sky Survey image of Atik

The image below is a photograph of Atik 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 Atik is 0.007 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Atik - ο Persei (omicron Persei) star
DSS2 image of Atik. The red arrow shows the motion of Atik during the next 10000 years (1.17 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of Atik from the Sun and relative movement

Atik is distant 1,475.11 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

452.49 pc
1,475.11 ly
19 km/s
0.007 arcsec/year
-0.011 arcsec/year

Spectral properties of Atik

Atik belongs to spectral class B1 and has a luminosity class of III corresponding to a giant star.


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

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

Atik star system properties

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

1 arcsec

Alternative designations of Atik

ο Persei
(omicron Persei)