υ Herculis (upsilon Herculis)

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

υ Herculis visual magnitude is 4.76. Because of its moderate brightness, υ 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 υ Herculis:

Color of υ Herculis ⬤

Magnitude of υ Herculis 4.76

Class Giant

VISIBILITY RIGHT NOW υ Herculis (upsilon Herculis) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 37°.

Celestial coordinates and finder chart of υ Herculis

υ 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 υ Herculis are provided in the following table:

Right Ascension J2000 16h 02m 47s

Declination J2000 +46° 02’ 12”

Galactic Longitude 72.69°

Galactic Latitude 47.98°

Constellation Hercules

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

Finder chart υ Herculis (upsilon Herculis) star

Simplified finder chart for υ Herculis (upsilon Herculis).

Visibility of υ Herculis from your location

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

υ Herculis (upsilon Herculis) is circumpolar and transits at 03:41 UTC (altitude: 84.6°)

Digitized Sky Survey image of υ Herculis

The image below is a photograph of υ 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 υ Herculis is 0.059 arcsec per year in Right Ascension and -0.058 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of υ Herculis (upsilon Herculis) star

DSS2 image of υ Herculis. The red arrow shows the motion of υ Herculis during the next 10000 years (9.83 arcmin in Right Ascension and -9.67 arcmin in declination);

Distance of υ Herculis from the Sun and relative movement

υ Herculis is distant 375.58 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 115.21 pc

Distance (light year) 375.58 ly

Heliocentric radial velocity 3 km/s

Proper Motion RA 0.059 arcsec/year

Proper Motion Dec -0.058 arcsec/year

Spectral properties of υ Herculis

υ Herculis belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.55

Spectral Type B9III

Color Index (B-V) -0.11

Temperature of υ Herculis 11744K

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

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

Alternative designations of υ Herculis

Bayer designation υ Herculis
(upsilon Herculis)

Flamsteed designation 6 Herculis

Henry Draper Catalogue HD144206

SAO Catalogue SAO45865

Hipparcos Catalogue HIP78592

Durchmusterung Catalogue BD+46 2142

FK5 Catalogue 3271

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In Evidence

Other stars in Hercules