We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
Help keep this site free and ads-free: donate now!
public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
wb_twilight   (Nautical Twilight)   What's Visible Now?


Above the horizon.  Rise: 20:16 | Tran: 4:23 | Set: 12:25
Altitude: 55.8°   Azimuth: 139.1°   Direction: South-East

HR8101 is a double main-sequence star of spectral class A1 in the constellation of Vulpecula.

HR8101 visual magnitude is 6.68. Because of its faintness, HR8101 is not visible to the naked eye.

Celestial coordinates and finder chart of HR8101

Finder chart HR8101 star
Simplified finder chart for HR8101.

HR8101 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8101 are provided in the following table:

21h 10m 32s
+22° 27’ 16”
Image of HR8101 star
DSS2 image of HR8101. The red arrow shows the motion of HR8101 during the next 10000 years (3.33 arcmin in Right Ascension and -1.33 arcmin in declination);

Key facts about HR8101


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8101 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8101. Attribution: Richard Powell / CC BY-SA

HR8101 star system properties

HR8101 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR8101 double sysyem:

18 arcsec

Distance of HR8101 from the Sun and relative movement

HR8101 is distant 2,024.84 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

621.12 pc
2,024.84 ly
-12 km/s
0.02 arcsec/year
-0.008 arcsec/year

Alternative designations of HR8101


Visibility of HR8101 from your location

Today's HR8101 rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.5°
Max altitude: 61.0°
Azimuth: 292.5°