Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

9 Herculis

9 Herculis is a giant star in the constellation of Hercules.

9 Herculis visual magnitude is 5.48. Because of its reltive faintness, 9 Herculis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 9 Herculis:

5.48
Giant
9 Herculis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 43°.

Celestial coordinates and finder chart of 9 Herculis

9 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 9 Herculis are provided in the following table:

16h 13m 15s
+05° 01’ 15”
17.55°
37.18°
Hercules

The simplified sky map below shows the position of 9 Herculis in the sky:

Finder chart 9 Herculis star
Simplified finder chart for 9 Herculis.

Visibility of 9 Herculis from your location

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

Today's 9 Herculis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.0°
Max altitude: 43.5°
Azimuth: 275.0°
9 Herculis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 9 Herculis

The image below is a photograph of 9 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 9 Herculis is 0.04 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 9 Herculis star
DSS2 image of 9 Herculis. The red arrow shows the motion of 9 Herculis during the next 10000 years (6.67 arcmin in Right Ascension and -1.17 arcmin in declination);

Distance of 9 Herculis from the Sun and relative movement

9 Herculis is distant 424.48 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

130.21 pc
424.48 ly
-2 km/s
0.04 arcsec/year
-0.007 arcsec/year

Spectral properties of 9 Herculis

9 Herculis belongs to spectral class K5

-0.09
K5
3839K

The red dot in the diagram below shows where 9 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 9 Herculis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 9 Herculis

SAO121431
SAO121431