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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: 6:38  
clear_day Transit: 12:10  
SunsetSet: 17:43
sleep NighttimeWhat's Visible Now?
All Constellations » Pegasus » 

HR8642

Altitude: -18.6°   Azimuth: 327.8°   Direction: North-North-West

HR8642 is a giant star in the constellation of Pegasus.

HR8642 visual magnitude is 5.9. Because of its reltive faintness, HR8642 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 HR8642 is 0.092 arcsec per year in Right Ascension and -0.021 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8642 star
DSS2 image of HR8642. The red arrow shows the motion of HR8642 during the next 1000 years (1.53 arcmin in Right Ascension and -0.35 arcmin in declination);

Key facts about HR8642

5.9
Giant

HR8642 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -18.6°
Azimuth: 327.8°
Direction: North-North-West

Celestial coordinates and finder chart of HR8642

HR8642 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8642 are provided in the following table:

22h 41m 57s
+14° 30’ 59”
81.92°
-37.83°
Pegasus

The simplified sky map below shows the position of HR8642 in the sky:

Finder chart HR8642 star
Simplified finder chart for HR8642.

Visibility of HR8642 from your location

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

Today's HR8642 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 75.5°
Max altitude: 53.0°
Azimuth: 284.5°

Distance of HR8642 from the Sun and relative movement

HR8642 is distant 266.78 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

81.83 pc
266.78 ly
-26 km/s
0.092 arcsec/year
-0.021 arcsec/year

Spectral properties of HR8642

HR8642 belongs to spectral class K0

1.34
K0
4493K

The red dot in the diagram below shows where HR8642 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8642. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8642

SAO108109
SAO108109