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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
wb_twilight   (Nautical Twilight)   What's Visible Now?


Below the horizon.  Never rises today
Altitude: -3.0°   Azimuth: 162.9°   Direction: South-South-East

HR8104 is a sub-giant star of spectral class F5 in the constellation of Microscopium.

HR8104 visual magnitude is 5.26. Because of its faintness, HR8104 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR8104

Finder chart HR8104 star
Simplified finder chart for HR8104.

HR8104 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 HR8104 are provided in the following table:

21h 13m 03s
-39° 25’ 31”
Image of HR8104 star
DSS2 image of HR8104. The red arrow shows the motion of HR8104 during the next 1000 years (3.10 arcmin in Right Ascension and -2.05 arcmin in declination);

Key facts about HR8104


and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8104 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8104. Attribution: Richard Powell / CC BY-SA

Distance of HR8104 from the Sun and relative movement

HR8104 is distant 108.81 light years from the Sun and it is moving towards the Sun at the speed of 44 kilometers per second.

33.38 pc
108.81 ly
-44 km/s
0.186 arcsec/year
-0.123 arcsec/year

Alternative designations of HR8104


Visibility of HR8104 from your location

HR8104 is currently not visible from Greenwich, United Kingdom