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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
sunny DaytimeWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 54.5°   Azimuth: 302.7°   Direction: West-North-West

HR8434 is a hypergiant star in the constellation of Cepheus.

HR8434 visual magnitude is 6.39. Because of its reltive faintness, HR8434 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR8434 is 0.014 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8434 star
DSS2 image of HR8434. The red arrow shows the motion of HR8434 during the next 10000 years (2.33 arcmin in Right Ascension and -1.83 arcmin in declination);

Key facts about HR8434


HR8434 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 54.5°
Azimuth: 302.7°
Direction: West-North-West

Celestial coordinates and finder chart of HR8434

HR8434 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 HR8434 are provided in the following table:

22h 06m 13s
+56° 20’ 35”

The simplified sky map below shows the position of HR8434 in the sky:

Finder chart HR8434 star
Simplified finder chart for HR8434.

Visibility of HR8434 from your location

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

HR8434 is circumpolar and transits at 11:31 UTC (altitude: 85.1°)

Distance of HR8434 from the Sun and relative movement

HR8434 is distant 575.97 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

176.68 pc
575.97 ly
-20 km/s
0.014 arcsec/year
-0.011 arcsec/year

Spectral properties of HR8434

HR8434 belongs to spectral class A0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8434 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8434. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8434