Helvetios - 51 Pegasi

Above the horizon. Rise: 0:05 | Tran: 8:01 | Set: 15:54

Alt: 58.30° Az: 160.72° Direction: South-South-East

Helvetios, also designated as 51 Pegasi , is a variable sub-giant star of spectral class G2 in the constellation of Pegasus.

Helvetios visual magnitude is 5.49. Because of its faintness, Helvetios 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 Helvetios. The red arrow shows the motion of Helvetios during the next 1000 years (3.40 arcmin in Right Ascension and 0.98 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 58m 42s

Declination +20° 54’ 18”

Hour Angle 23h 17m 11s

Sidereal Time 22h 15m 53s

J2000

Right Ascension 22h 57m 27s

Declination +20° 46’ 08”

Galactic Coordinates

Galactic Longitude 90.06°

Galactic Latitude -34.73°

Finder Chart

Loading map...

Finder chart for Helvetios - 51 Pegasi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.49

Class Sub-giant

Absolute magnitude 4.56

Spectral Type G2IV

Color Index (B-V) 0.67

Temperature 5706K

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

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

Distance, Radial Speed, Proper Motion

Helvetios is distant 50.08 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.

Distance (parsec) 15.36

Distance (light year) 50.08

Radial Speed -31 km/s

Proper Motion RA 0.204 arcsec/y

Proper Motion Dec 0.059"/y

Alternative Designations

Proper Name Helvetios

Flamsteed designation 51 Pegasi

Henry Draper Catalogue HD217014

SAO Catalogue SAO90896

Hipparcos Catalogue HIP113357

Durchmusterung Catalogue BD+19 5036

Gliese Catalogue Gl 882

General Catalogue of Variable Stars 14374

Visibility from Your Location

Today's Helvetios - 51 Pegasi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 69.1° RISE 0:05

Max altitude: 59.4° TRANSIT 8:01

Azimuth: 290.9° SET 15:54

Set Location

Other stars in Pegasus