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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Microscopium » 


Altitude: -48.6°   Azimuth: 96.3°   Direction: East

HR7933 is a main-sequence star in the constellation of Microscopium.

HR7933 visual magnitude is 5.5. Because of its reltive faintness, HR7933 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 HR7933:


HR7933 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -48.6°
Azimuth: 96.3°
Direction: East

Celestial coordinates and finder chart of HR7933

HR7933 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 HR7933 are provided in the following table:

20h 46m 20s
-39° 11’ 57”

The simplified sky map below shows the position of HR7933 in the sky:

Finder chart HR7933 star
Simplified finder chart for HR7933.

Visibility of HR7933 from your location

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

HR7933 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR7933

The image below is a photograph of HR7933 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 HR7933 is 0.049 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7933 star
DSS2 image of HR7933. The red arrow shows the motion of HR7933 during the next 10000 years (8.17 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR7933 from the Sun and relative movement

HR7933 is distant 319.92 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

98.14 pc
319.92 ly
-30 km/s
0.049 arcsec/year
-0.03 arcsec/year

Spectral properties of HR7933

HR7933 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 HR7933 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR7933. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7933