Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR8702

HR8702 is a double giant star in the constellation of Cepheus.

HR8702 visual magnitude is 4.74. Because of its moderate brightness, HR8702 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR8702:

4.74
Giant
HR8702 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 58°.

Celestial coordinates and finder chart of HR8702

HR8702 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 HR8702 are provided in the following table:

22h 47m 29s
+83° 09’ 14”
119.16°
21.21°
Cepheus

The simplified sky map below shows the position of HR8702 in the sky:

Finder chart HR8702 star
Simplified finder chart for HR8702.

Visibility of HR8702 from your location

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

HR8702 is circumpolar and transits at 20:36 UTC (altitude: 58.3°)

Digitized Sky Survey image of HR8702

The image below is a photograph of HR8702 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 HR8702 is 0.021 arcsec per year in Right Ascension and 0.049 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8702 star
DSS2 image of HR8702. The red arrow shows the motion of HR8702 during the next 10000 years (3.50 arcmin in Right Ascension and 8.17 arcmin in declination);

Distance of HR8702 from the Sun and relative movement

HR8702 is distant 324.06 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.

99.40 pc
324.06 ly
-31 km/s
0.021 arcsec/year
0.049 arcsec/year

Spectral properties of HR8702

HR8702 belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.

-0.25
K3III
4194K

The red dot in the diagram below shows where HR8702 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8702. Attribution: Richard Powell / CC BY-SA

HR8702 star system properties

HR8702 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 HR8702 double sysyem:

4.74
9.44
4.7
3.5 arcsec

Alternative designations of HR8702

SAO3794
SAO3794