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public LocationGreenwich, UK
Sunrise: 4:58 
Transit: 13:04 
Sunset: 21:09
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Cetus » 


Above the horizon.  Rise: 1:48 | Tran: 5:41 | Set: 9:34
Altitude: 9.5°   Azimuth: 146.4°   Direction: South-South-East

HR12 is a variable and double main-sequence star of spectral class A2 in the constellation of Cetus.

HR12 visual magnitude is 5.94. Because of its faintness, HR12 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

HR12 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year.

Image of HR12 star
DSS2 image of HR12. The red arrow shows the motion of HR12 during the next 10000 years (8.67 arcmin in Right Ascension and -7.33 arcmin in declination);

Apparent Coordinates

00h 09m 01s
-22° 22’ 20”

J2000 Coordinates

00h 07m 46s
-22° 30’ 32”

Galactic Coordinates


Finder Chart

Finder chart HR12 star
Simplified finder chart for HR12.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR12 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR12. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR12 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR12 double sysyem:

1.9 arcsec

Distance, Radial Speed, Proper Motion

HR12 is distant 261.85 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

80.32 pc
261.85 ly
-13 km/s
0.052 arcsec/y
-0.044 "/y

Alternative Designations


Visibility from Your Location

Today's HR12 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.5°
Max altitude: 16.0°
Azimuth: 247.5°