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: 6:54  
clear_day Transit: 12:49  
SunsetSet: 18:43 south
sunny DaytimeWhat's Visible Now
All Constellations » Cetus » 


Altitude: -26.9°   Azimuth: 282.5°   Direction: West-North-West

HR227 is a double giant star in the constellation of Cetus.

HR227 visual magnitude is 5.59. Because of its reltive faintness, HR227 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 HR227:


HR227 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -26.9°
Azimuth: 282.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR227

HR227 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 HR227 are provided in the following table:

00h 49m 25s
-13° 33’ 41”

The simplified sky map below shows the position of HR227 in the sky:

Finder chart HR227 star
Simplified finder chart for HR227.

Visibility of HR227 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 HR227 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: 103.6°
Max altitude: 25.0°
Azimuth: 256.4°

Digitized Sky Survey image of HR227

The image below is a photograph of HR227 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 HR227 is 0.105 arcsec per year in Right Ascension and -0.104 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR227 star
DSS2 image of HR227. The red arrow shows the motion of HR227 during the next 1000 years (1.75 arcmin in Right Ascension and -1.73 arcmin in declination);

Distance of HR227 from the Sun and relative movement

HR227 is distant 325.35 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

99.80 pc
325.35 ly
4 km/s
0.105 arcsec/year
-0.104 arcsec/year

Spectral properties of HR227

HR227 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR227 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR227. Attribution: Richard Powell / CC BY-SA

HR227 star system properties

HR227 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 HR227 double sysyem:

1.3 arcsec

Alternative designations of HR227