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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Cepheus » 

HR8099

Above the horizon.  Circumpolar today
Altitude: 58.4°   Azimuth: 30.4°   Direction: North-North-East

HR8099 is a sub-giant star of spectral class F3 in the constellation of Cepheus.

HR8099 visual magnitude is 5.87. Because of its faintness, HR8099 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 HR8099

Finder chart HR8099 star
Simplified finder chart for HR8099.

HR8099 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8099 are provided in the following table:

21h 06m 23s
+71° 25’ 54”
106.95°
15.95°
Cepheus
Image of HR8099 star
DSS2 image of HR8099. The red arrow shows the motion of HR8099 during the next 1000 years (-0.80 arcmin in Right Ascension and -1.93 arcmin in declination);

Key facts about HR8099

5.87
Sub-giant

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

2.41
F3IV
6880K

The red dot in the diagram below shows where HR8099 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8099. Attribution: Richard Powell / CC BY-SA

Distance of HR8099 from the Sun and relative movement

HR8099 is distant 160.12 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

49.12 pc
160.12 ly
2 km/s
-0.048 arcsec/year
-0.116 arcsec/year

Alternative designations of HR8099

SAO9957
SAO9957

Visibility of HR8099 from your location

HR8099 is circumpolar and transits at 02:55 UTC (altitude: 70.0°)