Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
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All Constellations » Microscopium » 

HR8100

HR8100 is a sub-giant star in the constellation of Microscopium.

HR8100 visual magnitude is 5.83. Because of its reltive faintness, HR8100 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 HR8100:

5.83
Sub-giant
HR8100 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR8100

HR8100 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 HR8100 are provided in the following table:

21h 12m 13s
-40° 16’ 09”
1.93°
-43.33°
Microscopium

The simplified sky map below shows the position of HR8100 in the sky:

Finder chart HR8100 star
Simplified finder chart for HR8100.

Visibility of HR8100 from your location

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

HR8100 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR8100

The image below is a photograph of HR8100 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 HR8100 is 0.047 arcsec per year in Right Ascension and -0.222 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8100 star
DSS2 image of HR8100. The red arrow shows the motion of HR8100 during the next 1000 years (0.78 arcmin in Right Ascension and -3.70 arcmin in declination);

Distance of HR8100 from the Sun and relative movement

HR8100 is distant 105.50 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

32.36 pc
105.50 ly
11 km/s
0.047 arcsec/year
-0.222 arcsec/year

Spectral properties of HR8100

HR8100 belongs to spectral class F5 and has a luminosity class of IV corresponding to a sub-giant star.

3.28
F5IV
6625K

The red dot in the diagram below shows where HR8100 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR8100. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8100

SAO230575
SAO230575