57 Pegasi

Above the horizon. Rise: 1:35 | Tran: 8:17 | Set: 15:00

Alt: 47.03° Az: 189.01° Direction: South

57 Pegasi is a variable and double giant star of spectral class M4 in the constellation of Pegasus.

57 Pegasi visual magnitude is 5.12. Because of its faintness, 57 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 57 Pegasi. The red arrow shows the motion of 57 Pegasi during the next 100000 years (6.67 arcmin in Right Ascension and 3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 23h 10m 48s

Declination +08° 48’ 54”

Hour Angle 00h 24m 48s

Sidereal Time 23h 35m 37s

J2000

Right Ascension 23h 09m 31s

Declination +08° 40’ 37”

Galactic Coordinates

Galactic Longitude 84.77°

Galactic Latitude -46.51°

Finder Chart

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Finder chart for 57 Pegasi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.12

Class Giant

Absolute magnitude -1.72

Spectral Type M4III

Color Index (B-V) 1.47

Temperature 3839K

The red dot in the diagram below shows where 57 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 57 Pegasi. Attribution: Richard Powell / CC BY-SA

Star System Properties

57 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 57 Pegasi double sysyem:

Main star magnitude 5.12

Secondary star magnitude 10.62

Magnitude difference 5.5

Separation 32.9 arcsec

Distance, Radial Speed, Proper Motion

57 Pegasi is distant 761.68 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

Distance (parsec) 233.64

Distance (light year) 761.68

Radial Speed 14 km/s

Proper Motion RA 0.004 arcsec/y

Proper Motion Dec 0.002"/y

Alternative Designations

Flamsteed designation 57 Pegasi

Henry Draper Catalogue HD218634

SAO Catalogue SAO128001

Hipparcos Catalogue HIP114347

Durchmusterung Catalogue BD+07 4981

General Catalogue of Variable Stars GZ Peg

Aitken Double Star Catalogue ADS16550

Visibility from Your Location

Today's 57 Pegasi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 81.2° RISE 1:35

Max altitude: 47.3° TRANSIT 8:17

Azimuth: 278.8° SET 15:00

Set Location

Other stars in Pegasus