51 Herculis

Above the horizon. Rise: 17:39 | Tran: 2:01 | Set: 10:18

Alt: 25.60° Az: 278.03° Direction: West

51 Herculis is a hypergiant star of spectral class K0 in the constellation of Hercules.

51 Herculis visual magnitude is 5.04. Because of its faintness, 51 Herculis 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 51 Herculis. The red arrow shows the motion of 51 Herculis during the next 10000 years (1.83 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 52m 48s

Declination +24° 36’ 54”

Hour Angle 05h 16m 46s

Sidereal Time 22h 09m 35s

J2000

Right Ascension 16h 51m 45s

Declination +24° 39’ 23”

Galactic Coordinates

Galactic Longitude 44.73°

Galactic Latitude 36.42°

Finder Chart

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Finder chart for 51 Herculis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.04

Class Hypergiant

Absolute magnitude -1.79

Spectral Type K0III

Color Index (B-V) 1.25

Temperature 4213K

The red dot in the diagram below shows where 51 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 51 Herculis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

51 Herculis is distant 758.14 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 232.56

Distance (light year) 758.14

Radial Speed -16 km/s

Proper Motion RA 0.011 arcsec/y

Proper Motion Dec 0.006"/y

Alternative Designations

Flamsteed designation 51 Herculis

Henry Draper Catalogue HD152326

SAO Catalogue SAO84651

Hipparcos Catalogue HIP82504

Durchmusterung Catalogue BD+24 3069

FK5 Catalogue 1440

Visibility from Your Location

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

Azimuth: 65.4° RISE 17:39

Max altitude: 63.1° TRANSIT 2:01

Azimuth: 294.6° SET 10:18

Set Location

Other stars in Hercules