We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sagittarius » 


Altitude: -20.7°   Azimuth: 246.3°   Direction: West-South-West

HR7105 is a main-sequence star in the constellation of Sagittarius.

HR7105 visual magnitude is 6.63. Because of its reltive faintness, HR7105 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 HR7105:


HR7105 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -20.7°
Azimuth: 246.3°
Direction: West-South-West

Celestial coordinates and finder chart of HR7105

HR7105 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 HR7105 are provided in the following table:

18h 52m 41s
-30° 44’ 03”

The simplified sky map below shows the position of HR7105 in the sky:

Finder chart HR7105 star
Simplified finder chart for HR7105.

Visibility of HR7105 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 HR7105 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: 120.7°
Max altitude: 7.8°
Azimuth: 239.3°

Digitized Sky Survey image of HR7105

The image below is a photograph of HR7105 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 HR7105 is -0.002 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7105 star
DSS2 image of HR7105. The red arrow shows the motion of HR7105 during the next 10000 years (-0.33 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of HR7105 from the Sun and relative movement

HR7105 is distant 546.06 light years from the Sun and it is moving towards the Sun at the speed of 50 kilometers per second.

167.50 pc
546.06 ly
-50 km/s
-0.002 arcsec/year
-0.023 arcsec/year

Spectral properties of HR7105

HR7105 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR7105 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7105. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7105