2 Pegasi

Above the horizon. Rise: 22:50 | Tran: 7:06 | Set: 15:17

Alt: 7.08° Az: 299.71° Direction: West-North-West

2 Pegasi is a double giant star of spectral class M1 in the constellation of Pegasus.

2 Pegasi visual magnitude is 4.57. Because of its moderate brightness, 2 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 2 Pegasi. The red arrow shows the motion of 2 Pegasi during the next 10000 years (4.00 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 21h 31m 05s

Declination +23° 45’ 03”

Hour Angle 07h 18m 40s

Sidereal Time 04h 49m 46s

J2000

Right Ascension 21h 29m 56s

Declination +23° 38’ 20”

Galactic Coordinates

Galactic Longitude 74.39°

Galactic Latitude -19.7°

Finder Chart

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Finder chart for 2 Pegasi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.57

Class Giant

Absolute magnitude -1.09

Spectral Type M1III

Color Index (B-V) 1.62

Temperature 3622K

The red dot in the diagram below shows where 2 Pegasi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 2 Pegasi. Attribution: Richard Powell / CC BY-SA

Star System Properties

2 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 2 Pegasi double sysyem:

Main star magnitude 4.57

Secondary star magnitude 12.67

Magnitude difference 8.1

Separation 29.8 arcsec

Distance, Radial Speed, Proper Motion

2 Pegasi is distant 442.33 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

Distance (parsec) 135.69

Distance (light year) 442.33

Radial Speed -19 km/s

Proper Motion RA 0.024 arcsec/y

Proper Motion Dec 0.004"/y

Alternative Designations

Flamsteed designation 2 Pegasi

Henry Draper Catalogue HD204724

SAO Catalogue SAO89752

Hipparcos Catalogue HIP106140

Durchmusterung Catalogue BD+23 4325

FK5 Catalogue 1565

Aitken Double Star Catalogue ADS15027

Visibility from Your Location

Today's 2 Pegasi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 66.2° RISE 22:50

Max altitude: 62.3° TRANSIT 7:06

Azimuth: 293.8° SET 15:17

Set Location

Other stars in Pegasus