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: 6:52  
clear_day Transit: 12:49  
SunsetSet: 18:46 south
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All Constellations » Carina » 

HR4239

Altitude: -33.1°   Azimuth: 214.0°   Direction: South-West

HR4239 is a double sub-giant star in the constellation of Carina.

HR4239 visual magnitude is 5.91. Because of its reltive faintness, HR4239 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 HR4239:

5.91
Sub-giant

HR4239 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -33.1°
Azimuth: 214.0°
Direction: South-West

Celestial coordinates and finder chart of HR4239

HR4239 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 HR4239 are provided in the following table:

10h 49m 24s
-59° 19’ 24”
287.92°
-0.06°
Carina

The simplified sky map below shows the position of HR4239 in the sky:

Finder chart HR4239 star
Simplified finder chart for HR4239.

Visibility of HR4239 from your location

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

HR4239 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4239

The image below is a photograph of HR4239 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 HR4239 is -0.043 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4239 star
DSS2 image of HR4239. The red arrow shows the motion of HR4239 during the next 10000 years (-7.17 arcmin in Right Ascension and 0.17 arcmin in declination);

Distance of HR4239 from the Sun and relative movement

HR4239 is distant 853.40 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

261.78 pc
853.40 ly
4 km/s
-0.043 arcsec/year
0.001 arcsec/year

Spectral properties of HR4239

HR4239 belongs to spectral class B9 and has a luminosity class of IV corresponding to a sub-giant star.

-1.18
B9IV
10125K

The red dot in the diagram below shows where HR4239 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4239. Attribution: Richard Powell / CC BY-SA

HR4239 star system properties

HR4239 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4239 double sysyem:

5.91
7.11
1.2
1.1 arcsec

Alternative designations of HR4239

SAO238514
SAO238514