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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sunny DaytimeWhat's Visible Now?
All Constellations » Dorado » 


Altitude: -60.4°   Azimuth: 248.1°   Direction: West-South-West

HR1227 is a variable and double main-sequence star in the constellation of Dorado.

HR1227 visual magnitude is 6.46. Because of its reltive faintness, HR1227 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 HR1227:


HR1227 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -60.4°
Azimuth: 248.1°
Direction: West-South-West

Celestial coordinates and finder chart of HR1227

HR1227 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1227 are provided in the following table:

03h 54m 33s
-52° 41’ 26”

The simplified sky map below shows the position of HR1227 in the sky:

Finder chart HR1227 star
Simplified finder chart for HR1227.

Visibility of HR1227 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR1227 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR1227

The image below is a photograph of HR1227 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 HR1227 is 0.031 arcsec per year in Right Ascension and -0.041 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1227 star
DSS2 image of HR1227. The red arrow shows the motion of HR1227 during the next 10000 years (5.17 arcmin in Right Ascension and -6.83 arcmin in declination);

Distance of HR1227 from the Sun and relative movement

HR1227 is distant 349.41 light years from the Sun and it is moving far from the Sun at the speed of 21 kilometers per second.

107.18 pc
349.41 ly
21 km/s
0.031 arcsec/year
-0.041 arcsec/year

Spectral properties of HR1227

HR1227 belongs to spectral class A4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1227 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1227. Attribution: Richard Powell / CC BY-SA

HR1227 star system properties

HR1227 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 HR1227 double sysyem:

22.8 arcsec

Alternative designations of HR1227