1 Pegasi

Above the horizon. Rise: 22:25 | Tran: 6:15 | Set: 14:00

Alt: 32.46° Az: 261.32° Direction: West

1 Pegasi is a multiple giant star of spectral class K1 in the constellation of Pegasus.

1 Pegasi visual magnitude is 4.08. Because of its moderate brightness, 1 Pegasi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 1 Pegasi. The red arrow shows the motion of 1 Pegasi during the next 1000 years (1.77 arcmin in Right Ascension and 1.07 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 21h 23m 15s

Declination +19° 54’ 49”

Hour Angle 04h 10m 04s

Sidereal Time 01h 33m 20s

J2000

Right Ascension 21h 22m 05s

Declination +19° 48’ 15”

Galactic Coordinates

Galactic Longitude 70.05°

Galactic Latitude -20.92°

Finder Chart

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Finder chart for 1 Pegasi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.08

Class Giant

Absolute magnitude 0.71

Spectral Type K1III

Color Index (B-V) 1.11

Temperature 4493K

The red dot in the diagram below shows where 1 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 1 Pegasi. Attribution: Richard Powell / CC BY-SA

Star System Properties

1 Pegasi is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 1 Pegasi double sysyem:

Main star magnitude 4.08

Secondary star magnitude 8.98

Magnitude difference 4.9

Separation 36.2 arcsec

Distance, Radial Speed, Proper Motion

1 Pegasi is distant 153.85 light years from the Sun and it is moving towards the Sun at the speed of 76 kilometers per second.

Distance (parsec) 47.19

Distance (light year) 153.85

Radial Speed -76 km/s

Proper Motion RA 0.106 arcsec/y

Proper Motion Dec 0.064"/y

Alternative Designations

Flamsteed designation 1 Pegasi

Henry Draper Catalogue HD203504

SAO Catalogue SAO107073

Hipparcos Catalogue HIP105502

Durchmusterung Catalogue BD+19 4691

FK5 Catalogue 804

Aitken Double Star Catalogue ADS14909

Visibility from Your Location

Today's 1 Pegasi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.1° RISE 22:25

Max altitude: 58.4° TRANSIT 6:15

Azimuth: 289.9° SET 14:00

Set Location

Other stars in Pegasus