111 Herculis

111 Herculis is a multiple giant star in the constellation of Hercules.

111 Herculis visual magnitude is 4.36. Because of its moderate brightness, 111 Herculis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 111 Herculis:

Color of 111 Herculis ⬤

Magnitude of 111 Herculis 4.36

Class Giant

VISIBILITY RIGHT NOW 111 Herculis is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 43°.

Celestial coordinates and finder chart of 111 Herculis

111 Herculis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 111 Herculis are provided in the following table:

Right Ascension J2000 18h 47m 01s

Declination J2000 +18° 10’ 53”

Galactic Longitude 48.76°

Galactic Latitude 9.12°

Constellation Hercules

The simplified sky map below shows the position of 111 Herculis in the sky:

Simplified finder chart for 111 Herculis.

Visibility of 111 Herculis from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 111 Herculis rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 71.8° RISE 19:26

Max altitude: 56.7° TRANSIT 3:05

Azimuth: 288.2° SET 10:40

RIGHT NOW 111 Herculis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 111 Herculis

The image below is a photograph of 111 Herculis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 111 Herculis is 0.073 arcsec per year in Right Ascension and 0.116 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 111 Herculis. The red arrow shows the motion of 111 Herculis during the next 1000 years (1.22 arcmin in Right Ascension and 1.93 arcmin in declination);

Distance of 111 Herculis from the Sun and relative movement

111 Herculis is distant 92.69 light years from the Sun and it is moving towards the Sun at the speed of 45 kilometers per second.

Distance (parsec) 28.43 pc

Distance (light year) 92.69 ly

Heliocentric radial velocity -45 km/s

Proper Motion RA 0.073 arcsec/year

Proper Motion Dec 0.116 arcsec/year

Spectral properties of 111 Herculis

111 Herculis belongs to spectral class A5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 2.09

Spectral Type A5III

Color Index (B-V) 0.13

Temperature of 111 Herculis 8748K

The red dot in the diagram below shows where 111 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 111 Herculis. Attribution: Richard Powell / CC BY-SA

111 Herculis star system properties

111 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 111 Herculis double sysyem:

Main star magnitude 4.36

Secondary star magnitude 9.86

Magnitude difference 5.5

Separation 121.3 arcsec

Alternative designations of 111 Herculis

Flamsteed designation 111 Herculis

Henry Draper Catalogue HD173880

SAO Catalogue SAO104093

Hipparcos Catalogue HIP92161

Durchmusterung Catalogue BD+18 3823

FK5 Catalogue 1491

In Evidence

Other stars in Hercules