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: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
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All Constellations » Cepheus » 


Altitude: 56.5°   Azimuth: 300.5°   Direction: West-North-West

HR8357 is a variable and multiple sub-giant star in the constellation of Cepheus.

HR8357 visual magnitude is 5.71. Because of its reltive faintness, HR8357 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 HR8357:


HR8357 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 56.5°
Azimuth: 300.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR8357

HR8357 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 HR8357 are provided in the following table:

21h 52m 00s
+55° 47’ 48”

The simplified sky map below shows the position of HR8357 in the sky:

Finder chart HR8357 star
Simplified finder chart for HR8357.

Visibility of HR8357 from your location

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

HR8357 is circumpolar and transits at 21:18 UTC (altitude: 85.7°)

Digitized Sky Survey image of HR8357

The image below is a photograph of HR8357 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 HR8357 is 0.013 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8357 star
DSS2 image of HR8357. The red arrow shows the motion of HR8357 during the next 10000 years (2.17 arcmin in Right Ascension and 0.50 arcmin in declination);

Distance of HR8357 from the Sun and relative movement

HR8357 is distant 643.00 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

197.24 pc
643.00 ly
-7 km/s
0.013 arcsec/year
0.003 arcsec/year

Spectral properties of HR8357

HR8357 belongs to spectral class B6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8357 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8357. Attribution: Richard Powell / CC BY-SA

HR8357 star system properties

HR8357 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 HR8357 double sysyem:

18.3 arcsec

Alternative designations of HR8357