Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR7239

HR7239 is a double sub-giant star in the constellation of Sagittarius.

HR7239 visual magnitude is 6.03. Because of its reltive faintness, HR7239 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 HR7239:

6.03
Sub-giant
HR7239 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7239

HR7239 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 HR7239 are provided in the following table:

19h 06m 52s
-16° 13’ 44”
20.04°
-10.66°
Sagittarius

The simplified sky map below shows the position of HR7239 in the sky:

Finder chart HR7239 star
Simplified finder chart for HR7239.

Visibility of HR7239 from your location

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

Today's HR7239 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.2°
Max altitude: 22.3°
Azimuth: 253.8°
HR7239 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7239

The image below is a photograph of HR7239 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 HR7239 is 0.021 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7239 star
DSS2 image of HR7239. The red arrow shows the motion of HR7239 during the next 10000 years (3.50 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR7239 from the Sun and relative movement

HR7239 is distant 893.15 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

273.97 pc
893.15 ly
-17 km/s
0.021 arcsec/year
0.004 arcsec/year

Spectral properties of HR7239

HR7239 belongs to spectral class B8 and has a luminosity class of IV corresponding to a sub-giant star.

-1.16
B8IV
10653K

The red dot in the diagram below shows where HR7239 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7239. Attribution: Richard Powell / CC BY-SA

HR7239 star system properties

HR7239 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 HR7239 double sysyem:

6.03
10.03
4
6.4 arcsec

Alternative designations of HR7239

SAO162201
SAO162201