72 Pegasi

Altitude: -2.1° Azimuth: 28.2° Direction: North-North-East

72 Pegasi is a variable and double giant star in the constellation of Pegasus.

72 Pegasi visual magnitude is 4.98. Because of its moderate brightness, 72 Pegasi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 72 Pegasi:

Color of 72 Pegasi ⬤

Magnitude of 72 Pegasi 4.98

Class Giant

VISIBILITY RIGHT NOW

72 Pegasi is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -2.1°
Azimuth: 28.2°
Direction: North-North-East

Celestial coordinates and finder chart of 72 Pegasi

72 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 72 Pegasi are provided in the following table:

Right Ascension J2000 23h 33m 57s

Declination J2000 +31° 19’ 31”

Galactic Longitude 104.09°

Galactic Latitude -28.69°

Constellation Pegasus

The simplified sky map below shows the position of 72 Pegasi in the sky:

Simplified finder chart for 72 Pegasi.

Visibility of 72 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 72 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: 58.7° RISE 14:35

Max altitude: 69.8° TRANSIT 23:52

Azimuth: 301.3° SET 9:12

Digitized Sky Survey image of 72 Pegasi

The image below is a photograph of 72 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 72 Pegasi is 0.052 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 72 Pegasi. The red arrow shows the motion of 72 Pegasi during the next 10000 years (8.67 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of 72 Pegasi from the Sun and relative movement

72 Pegasi is distant 547.90 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

Distance (parsec) 168.07 pc

Distance (light year) 547.90 ly

Heliocentric radial velocity -24 km/s

Proper Motion RA 0.052 arcsec/year

Proper Motion Dec -0.016 arcsec/year

Spectral properties of 72 Pegasi

72 Pegasi belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -1.15

Spectral Type K4III

Color Index (B-V) 1.38

Temperature of 72 Pegasi 3983K

The red dot in the diagram below shows where 72 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 72 Pegasi. Attribution: Richard Powell / CC BY-SA

72 Pegasi star system properties

72 Pegasi is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 72 Pegasi double sysyem:

Main star magnitude 4.98

Secondary star magnitude 5.18

Magnitude difference 0.2

Separation 0.5 arcsec

Alternative designations of 72 Pegasi

Flamsteed designation 72 Pegasi

Henry Draper Catalogue HD221673

SAO Catalogue SAO73341

Hipparcos Catalogue HIP116310

Durchmusterung Catalogue BD+30 4978

General Catalogue of Variable Stars 14617

Aitken Double Star Catalogue ADS16836

Support us

In Evidence

Other stars in Pegasus