π1 Pegasi (pi1 Pegasi)

Altitude: 44.1° Azimuth: 89.7° Direction: East

π1 Pegasi is a multiple giant star in the constellation of Pegasus.

π1 Pegasi visual magnitude is 5.58. Because of its reltive faintness, π1 Pegasi should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about π1 Pegasi:

Color of π1 Pegasi ⬤

Magnitude of π1 Pegasi 5.58

Class Giant

VISIBILITY RIGHT NOW

π1 Pegasi (pi1 Pegasi) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 44.1°
Azimuth: 89.7°
Direction: East

Celestial coordinates and finder chart of π1 Pegasi

π1 Pegasi 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 π1 Pegasi are provided in the following table:

Right Ascension J2000 22h 09m 13s

Declination J2000 +33° 10’ 19”

Galactic Longitude 87.93°

Galactic Latitude -18.45°

Constellation Pegasus

The simplified sky map below shows the position of π1 Pegasi in the sky:

Finder chart π1 Pegasi (pi1 Pegasi) star

Simplified finder chart for π1 Pegasi (pi1 Pegasi).

Visibility of π1 Pegasi 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 π1 Pegasi (pi1 Pegasi) 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: 56.8° RISE 8:02

Max altitude: 71.7° TRANSIT 17:39

Azimuth: 303.2° SET 3:21

Digitized Sky Survey image of π1 Pegasi

The image below is a photograph of π1 Pegasi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of π1 Pegasi is -0.059 arcsec per year in Right Ascension and -0.067 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of π1 Pegasi. The red arrow shows the motion of π1 Pegasi during the next 10000 years (-9.83 arcmin in Right Ascension and -11.17 arcmin in declination);

Distance of π1 Pegasi from the Sun and relative movement

π1 Pegasi is distant 283.23 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 86.88 pc

Distance (light year) 283.23 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.059 arcsec/year

Proper Motion Dec -0.067 arcsec/year

Spectral properties of π1 Pegasi

π1 Pegasi belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.89

Spectral Type G8III

Color Index (B-V) 1

Temperature of π1 Pegasi 4743K

The red dot in the diagram below shows where π1 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of π1 Pegasi. Attribution: Richard Powell / CC BY-SA

π1 Pegasi star system properties

π1 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 π1 Pegasi double sysyem:

Main star magnitude 5.58

Secondary star magnitude 11.38

Magnitude difference 5.8

Separation 70.2 arcsec

Alternative designations of π1 Pegasi

Bayer designation π1 Pegasi
(pi1 Pegasi)

Flamsteed designation 27 Pegasi

Henry Draper Catalogue HD210354

SAO Catalogue SAO72064

Hipparcos Catalogue HIP109352

Durchmusterung Catalogue BD+32 4349

FK5 Catalogue 833

Aitken Double Star Catalogue ADS15672

Support us

In Evidence

Other stars in Pegasus