Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:59  ☀️ Transit: 12:05  🌅 Sunset: 18:13


HR8621 is a variable and double giant star in the constellation of Lacerta.

HR8621 visual magnitude is 5.21. Because of its reltive faintness, HR8621 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 HR8621:

HR8621 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 82°.

Celestial coordinates and finder chart of HR8621

HR8621 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8621 are provided in the following table:

22h 38m 37s
+56° 47’ 44”

The simplified sky map below shows the position of HR8621 in the sky:

Finder chart HR8621 star
Simplified finder chart for HR8621.

Visibility of HR8621 from your location

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

HR8621 is circumpolar and transits at 10:39 UTC (altitude: 84.7°)

Digitized Sky Survey image of HR8621

The image below is a photograph of HR8621 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 HR8621 is 0.053 arcsec per year in Right Ascension and -0.029 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8621 star
DSS2 image of HR8621. The red arrow shows the motion of HR8621 during the next 10000 years (8.83 arcmin in Right Ascension and -4.83 arcmin in declination);

Distance of HR8621 from the Sun and relative movement

HR8621 is distant 429.51 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

131.75 pc
429.51 ly
8 km/s
0.053 arcsec/year
-0.029 arcsec/year

Spectral properties of HR8621

HR8621 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8621 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8621. Attribution: Richard Powell / CC BY-SA

HR8621 star system properties

HR8621 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 HR8621 double sysyem:

30.9 arcsec

Alternative designations of HR8621