We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations » Hercules » 

104 Herculis

Altitude: 10.3°   Azimuth: 51.6°   Direction: North-East

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 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.

Image of 104 Herculis star
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);

Key facts about 104 Herculis

4.97
Giant

104 Herculis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 10.3°
Azimuth: 51.6°
Direction: North-East

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:

18h 11m 54s
+31° 24’ 19”
58.2°
21.59°
Hercules

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

Finder chart 104 Herculis star
Simplified finder chart for 104 Herculis.

Visibility of 104 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 104 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: 58.6°
Max altitude: 69.9°
Azimuth: 301.4°

Distance of 104 Herculis from the Sun and relative movement

104 Herculis is distant 601.48 light years from the Sun

184.50 pc
601.48 ly
-0.013 arcsec/year
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.

-1.36
M3III
3581K

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

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

Alternative designations of 104 Herculis

104 Herculis
SAO66737
SAO66737