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

HR7123

HR7123 is a sub-giant star in the constellation of Draco.

HR7123 visual magnitude is 5.51. Because of its reltive faintness, HR7123 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 HR7123:

5.51
Sub-giant
HR7123 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 15°.

Celestial coordinates and finder chart of HR7123

HR7123 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 HR7123 are provided in the following table:

18h 51m 34s
+52° 58’ 30”
82.65°
21.33°
Draco

The simplified sky map below shows the position of HR7123 in the sky:

Finder chart HR7123 star
Simplified finder chart for HR7123.

Visibility of HR7123 from your location

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

HR7123 is circumpolar and transits at 09:42 UTC (altitude: 88.5°)

Digitized Sky Survey image of HR7123

The image below is a photograph of HR7123 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 HR7123 is -0.046 arcsec per year in Right Ascension and 0.271 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR7123 star
DSS2 image of HR7123. The red arrow shows the motion of HR7123 during the next 1000 years (-0.77 arcmin in Right Ascension and 4.52 arcmin in declination);

Distance of HR7123 from the Sun and relative movement

HR7123 is distant 85.07 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

26.10 pc
85.07 ly
2 km/s
-0.046 arcsec/year
0.271 arcsec/year

Spectral properties of HR7123

HR7123 belongs to spectral class G9 and has a luminosity class of IV corresponding to a sub-giant star.

3.43
G9IV
5163K

The red dot in the diagram below shows where HR7123 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7123. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7123

SAO31217
SAO31217
Gl 732.1