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: 4:47  
clear_day Transit: 12:56  
SunsetSet: 21:06 south
sunny DaytimeWhat's Visible Now
All Constellations » Perseus » 


HR1209 is a variable and double star in the constellation of Perseus.

HR1209 visual magnitude is 6.1. Because of its reltive faintness, HR1209 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 HR1209:

HR1209 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 11°.

Celestial coordinates and finder chart of HR1209

HR1209 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 HR1209 are provided in the following table:

03h 55m 23s
+31° 02’ 44”

The simplified sky map below shows the position of HR1209 in the sky:

Finder chart HR1209 star
Simplified finder chart for HR1209.

Visibility of HR1209 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 HR1209 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: 59.0°
Max altitude: 69.6°
Azimuth: 301.0°
HR1209 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1209

The image below is a photograph of HR1209 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 HR1209 is -0.013 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1209 star
DSS2 image of HR1209. The red arrow shows the motion of HR1209 during the next 10000 years (-2.17 arcmin in Right Ascension and -1.17 arcmin in declination);

Distance of HR1209 from the Sun and relative movement

HR1209 is distant 2,694.21 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

826.45 pc
2,694.21 ly
15 km/s
-0.013 arcsec/year
-0.007 arcsec/year

Spectral properties of HR1209

HR1209 belongs to spectral class O9


The red dot in the diagram below shows where HR1209 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1209. Attribution: Richard Powell / CC BY-SA

HR1209 star system properties

HR1209 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR1209 double sysyem:

22.5 arcsec

Alternative designations of HR1209