104 Herculis

104 Herculis is a variable giant star in the constellation of Hercules.

104 Herculis visual magnitude is 4.97. Because of its moderate brightness, 104 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 104 Herculis:

Color of 104 Herculis ⬤

Magnitude of 104 Herculis 4.97

Class Giant

VISIBILITY RIGHT NOW 104 Herculis is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of 104 Herculis

104 Herculis is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 104 Herculis are provided in the following table:

Right Ascension J2000 18h 11m 54s

Declination J2000 +31° 24’ 19”

Galactic Longitude 58.2°

Galactic Latitude 21.59°

Constellation Hercules

The simplified sky map below shows the position of 104 Herculis in the sky:

Simplified finder chart for 104 Herculis.

Visibility of 104 Herculis from your location

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

Today's 104 Herculis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 58.6° RISE 21:13

Max altitude: 69.9° TRANSIT 6:34

Azimuth: 301.4° SET 15:51

RIGHT NOW 104 Herculis is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 104 Herculis

The image below is a photograph of 104 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 104 Herculis is -0.013 arcsec per year in Right Ascension and 0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 104 Herculis. The red arrow shows the motion of 104 Herculis during the next 10000 years (-2.17 arcmin in Right Ascension and 5.00 arcmin in declination);

Distance of 104 Herculis from the Sun and relative movement

104 Herculis is distant 601.48 light years from the Sun

Distance (parsec) 184.50 pc

Distance (light year) 601.48 ly

Proper Motion RA -0.013 arcsec/year

Proper Motion Dec 0.03 arcsec/year

Spectral properties of 104 Herculis

104 Herculis belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -1.36

Spectral Type M3III

Color Index (B-V) 1.65

Temperature of 104 Herculis 3581K

The red dot in the diagram below shows where 104 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 104 Herculis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 104 Herculis

Flamsteed designation 104 Herculis

Henry Draper Catalogue HD167006

SAO Catalogue SAO66737

Hipparcos Catalogue HIP89172

Durchmusterung Catalogue BD+31 3199

FK5 Catalogue 3448

General Catalogue of Variable Stars V669 Her

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In Evidence

Other stars in Hercules