45 Herculis

Above the horizon. Rise: 19:44 | Tran: 2:12 | Set: 8:37

Alt: 17.85° Az: 104.57° Direction: East-South-East

45 Herculis is a variable and double star of spectral class B9 in the constellation of Hercules.

45 Herculis visual magnitude is 5.24. Because of its faintness, 45 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 45 Herculis. The red arrow shows the motion of 45 Herculis during the next 10000 years (-2.67 arcmin in Right Ascension and -6.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 49m 01s

Declination +05° 12’ 11”

Hour Angle 19h 29m 15s

Sidereal Time 12h 18m 17s

J2000

Right Ascension 16h 47m 46s

Declination +05° 14’ 48”

Galactic Coordinates

Galactic Longitude 22.85°

Galactic Latitude 29.8°

Finder Chart

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Finder chart for 45 Herculis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.24

Class

45 Herculis is also a Cr chemically peculiar star.

Absolute magnitude -0.51

Spectral Type B9

Color Index (B-V) -0.02

Temperature 10382K

The red dot in the diagram below shows where 45 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 45 Herculis. Attribution: Richard Powell / CC BY-SA

Star System Properties

45 Herculis 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 45 Herculis double sysyem:

Main star magnitude 5.24

Secondary star magnitude 10.44

Magnitude difference 5.2

Separation 122.7 arcsec

Distance, Radial Speed, Proper Motion

45 Herculis is distant 459.80 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 141.04

Distance (light year) 459.80

Radial Speed -16 km/s

Proper Motion RA -0.016 arcsec/y

Proper Motion Dec -0.041"/y

Alternative Designations

Flamsteed designation 45 Herculis

Henry Draper Catalogue HD151525

SAO Catalogue SAO121865

Hipparcos Catalogue HIP82216

Durchmusterung Catalogue BD+05 3272

FK5 Catalogue 3333

General Catalogue of Variable Stars V776 Her

Visibility from Your Location

Today's 45 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 84.8° RISE 19:44

Max altitude: 43.7° TRANSIT 2:12

Azimuth: 275.2° SET 8:37

Set Location

Other stars in Hercules