30 Pegasi

30 Pegasi is a variable and multiple sub-giant star in the constellation of Pegasus.

30 Pegasi visual magnitude is 5.37. Because of its reltive faintness, 30 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 30 Pegasi:

Color of 30 Pegasi ⬤

Magnitude of 30 Pegasi 5.37

Class Sub-giant

VISIBILITY RIGHT NOW

30 Pegasi is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 42.0°
Azimuth: 204.1°
Direction: South-South-West

Celestial coordinates and finder chart of 30 Pegasi

30 Pegasi is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 30 Pegasi are provided in the following table:

Right Ascension J2000 22h 20m 27s

Declination J2000 +05° 47’ 21”

Galactic Longitude 69.3°

Galactic Latitude -40.86°

Constellation Pegasus

The simplified sky map below shows the position of 30 Pegasi in the sky:

Simplified finder chart for 30 Pegasi.

Visibility of 30 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 30 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: 84.2° RISE 23:59

Max altitude: 44.3° TRANSIT 6:30

Azimuth: 275.8° SET 12:57

RIGHT NOW 30 Pegasi is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 30 Pegasi

The image below is a photograph of 30 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 30 Pegasi is 0.023 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 30 Pegasi. The red arrow shows the motion of 30 Pegasi during the next 10000 years (3.83 arcmin in Right Ascension and -0.17 arcmin in declination);

Distance of 30 Pegasi from the Sun and relative movement

30 Pegasi is distant 918.31 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 281.69 pc

Distance (light year) 918.31 ly

Heliocentric radial velocity -8 km/s

Proper Motion RA 0.023 arcsec/year

Proper Motion Dec -0.001 arcsec/year

Spectral properties of 30 Pegasi

30 Pegasi belongs to spectral class B5 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -1.88

Spectral Type B5IV

Color Index (B-V) -0.02

Temperature of 30 Pegasi 10382K

The red dot in the diagram below shows where 30 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 30 Pegasi. Attribution: Richard Powell / CC BY-SA

30 Pegasi star system properties

30 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 30 Pegasi double sysyem:

Main star magnitude 5.37

Secondary star magnitude 11.27

Magnitude difference 5.9

Separation 14.8 arcsec

Alternative designations of 30 Pegasi

Flamsteed designation 30 Pegasi

Henry Draper Catalogue HD211924

SAO Catalogue SAO127453

Hipparcos Catalogue HIP110298

Durchmusterung Catalogue BD+05 4998

General Catalogue of Variable Stars 14122

Aitken Double Star Catalogue ADS15847

In Evidence

Other stars in Pegasus