100 Herculis

Above the horizon. Rise: 4:32 | Tran: 13:01 | Set: 21:30

Alt: 30.88° Az: 274.12° Direction: West

100 Herculis is a variable and multiple main-sequence star of spectral class A3 in the constellation of Hercules.

100 Herculis visual magnitude is 5.9. Because of its faintness, 100 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 100 Herculis. The red arrow shows the motion of 100 Herculis during the next 10000 years (-0.33 arcmin in Right Ascension and 5.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 08m 49s

Declination +26° 06’ 09”

Hour Angle 04h 49m 36s

Sidereal Time 22h 58m 26s

J2000

Right Ascension 18h 07m 49s

Declination +26° 05’ 51”

Galactic Coordinates

Galactic Longitude 52.53°

Galactic Latitude 20.59°

Finder Chart

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Finder chart for 100 Herculis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.9

Class Main-sequence

Absolute magnitude 2.37

Spectral Type A3V

Color Index (B-V) 0.14

Temperature 8658K

The red dot in the diagram below shows where 100 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 100 Herculis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

100 Herculis is distant 165.90 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 50.89

Distance (light year) 165.90

Radial Speed -16 km/s

Proper Motion RA -0.002 arcsec/y

Proper Motion Dec 0.033"/y

Alternative Designations

Flamsteed designation 100 Herculis

Henry Draper Catalogue HD166046

SAO Catalogue SAO85752

Hipparcos Catalogue HIP88817

Durchmusterung Catalogue BD+26 3178

General Catalogue of Variable Stars 10253

Aitken Double Star Catalogue ADS11089

Visibility from Your Location

Today's 100 Herculis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 63.9° RISE 4:32

Max altitude: 64.6° TRANSIT 13:01

Azimuth: 296.1° SET 21:30

Set Location

Other stars in Hercules