40 Pegasi

Above the horizon. Rise: 16:10 | Tran: 23:54 | Set: 7:42

Alt: 4.64° Az: 63.91° Direction: East-North-East

40 Pegasi is a double bright giant star of spectral class G8 in the constellation of Pegasus.

40 Pegasi visual magnitude is 5.82. Because of its faintness, 40 Pegasi is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 40 Pegasi. The red arrow shows the motion of 40 Pegasi during the next 1000 years (-0.70 arcmin in Right Ascension and -1.65 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 40m 04s

Declination +19° 39’ 04”

Hour Angle 16h 47m 35s

Sideral Time 15h 27m 40s

J2000

Right Ascension 22h 38m 52s

Declination +19° 31’ 19”

Galactic Coordinates

Galactic Longitude 84.84°

Galactic Latitude -33.37°

Finder Chart

Simplified finder chart for 40 Pegasi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.82

Class Bright giant

Absolute magnitude 0.48

Spectral Type G8II

Color Index (B-V) 0.92

Temperature 4943K

The red dot in the diagram below shows where 40 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 40 Pegasi. Attribution: Richard Powell / CC BY-SA

Star System Properties

40 Pegasi is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the 40 Pegasi double sysyem:

Main star magnitude 5.82

Secondary star magnitude 11.42

Magnitude difference 5.6

Separation 1.5 arcsec

Distance, Radial Speed, Proper Motion

40 Pegasi is distant 381.29 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

Distance (parsec) 116.96

Distance (light year) 381.29

Radial Speed -20 km/s

Proper Motion RA -0.042 arcsec/y

Proper Motion Dec -0.099"/y

Alternative Designations

Flamsteed designation 40 Pegasi

Henry Draper Catalogue HD214567

SAO Catalogue SAO108064

Hipparcos Catalogue HIP111810

Durchmusterung Catalogue BD+18 5014

Visibility from Your Location

Today's 40 Pegasi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.3° RISE 16:10

Max altitude: 58.2° TRANSIT 23:54

Azimuth: 289.7° SET 7:42

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Pegasus