We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Help keep this site free and ads-free: donate now!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:39  
clear_day Transit: 12:56  
SunsetSet: 20:14
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Pegasus » 

HR8257

Altitude: -10.1°   Azimuth: 6.3°   Direction: North

HR8257 is a hypergiant star in the constellation of Pegasus.

HR8257 visual magnitude is 6.31. Because of its reltive faintness, HR8257 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 HR8257 is 0.128 arcsec per year in Right Ascension and -0.043 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8257 star
DSS2 image of HR8257. The red arrow shows the motion of HR8257 during the next 1000 years (2.13 arcmin in Right Ascension and -0.72 arcmin in declination);

Key facts about HR8257

6.31
Hypergiant

HR8257 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.1°
Azimuth: 6.3°
Direction: North

Celestial coordinates and finder chart of HR8257

HR8257 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 HR8257 are provided in the following table:

21h 35m 18s
+28° 11’ 49”
78.72°
-17.39°
Pegasus

The simplified sky map below shows the position of HR8257 in the sky:

Finder chart HR8257 star
Simplified finder chart for HR8257.

Visibility of HR8257 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 HR8257 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: 61.8°
Max altitude: 66.7°
Azimuth: 298.2°

Distance of HR8257 from the Sun and relative movement

HR8257 is distant 234.53 light years from the Sun and it is moving towards the Sun at the speed of 42 kilometers per second.

71.94 pc
234.53 ly
-42 km/s
0.128 arcsec/year
-0.043 arcsec/year

Spectral properties of HR8257

HR8257 belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.

2.03
F0IV
7158K

The red dot in the diagram below shows where HR8257 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8257. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8257

SAO89815
SAO89815