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: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
sunny DaytimeWhat's Visible Now
All Constellations » Gemini » 


Altitude: -2.2°   Azimuth: 315.9°   Direction: North-West

HR2439 is a sub-giant star in the constellation of Gemini.

HR2439 visual magnitude is 6.38. Because of its reltive faintness, HR2439 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 HR2439:


HR2439 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -2.2°
Azimuth: 315.9°
Direction: North-West

Celestial coordinates and finder chart of HR2439

HR2439 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 HR2439 are provided in the following table:

06h 39m 31s
+24° 36’ 00”

The simplified sky map below shows the position of HR2439 in the sky:

Finder chart HR2439 star
Simplified finder chart for HR2439.

Visibility of HR2439 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 HR2439 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: 65.4°
Max altitude: 63.1°
Azimuth: 294.6°

Digitized Sky Survey image of HR2439

The image below is a photograph of HR2439 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 HR2439 is 0.006 arcsec per year in Right Ascension and 0.084 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2439 star
DSS2 image of HR2439. The red arrow shows the motion of HR2439 during the next 10000 years (1.00 arcmin in Right Ascension and 14.00 arcmin in declination);

Distance of HR2439 from the Sun and relative movement

HR2439 is distant 114.63 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

35.16 pc
114.63 ly
18 km/s
0.006 arcsec/year
0.084 arcsec/year

Spectral properties of HR2439

HR2439 belongs to spectral class F8 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR2439 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2439. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2439