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: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:09 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Perseus » 


Altitude: 13.2°   Azimuth: 7.6°   Direction: North

HR864 is a giant star in the constellation of Perseus.

HR864 visual magnitude is 6.22. Because of its reltive faintness, HR864 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 HR864:


HR864 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 13.2°
Azimuth: 7.6°
Direction: North

Celestial coordinates and finder chart of HR864

HR864 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 HR864 are provided in the following table:

02h 56m 50s
+51° 15’ 38”

The simplified sky map below shows the position of HR864 in the sky:

Finder chart HR864 star
Simplified finder chart for HR864.

Visibility of HR864 from your location

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

HR864 is circumpolar and transits at 09:58 UTC (altitude: 89.8°)

Digitized Sky Survey image of HR864

The image below is a photograph of HR864 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 HR864 is -0.011 arcsec per year in Right Ascension and -0.039 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR864 star
DSS2 image of HR864. The red arrow shows the motion of HR864 during the next 10000 years (-1.83 arcmin in Right Ascension and -6.50 arcmin in declination);

Distance of HR864 from the Sun and relative movement

HR864 is distant 674.95 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

207.04 pc
674.95 ly
5 km/s
-0.011 arcsec/year
-0.039 arcsec/year

Spectral properties of HR864

HR864 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR864 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR864. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR864