77 Herculis

77 Herculis is a main-sequence star in the constellation of Hercules.

77 Herculis visual magnitude is 5.85. Because of its reltive faintness, 77 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 77 Herculis:

Color of 77 Herculis ⬤

Magnitude of 77 Herculis 5.85

Class Main-sequence

VISIBILITY RIGHT NOW 77 Herculis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 10°.

Celestial coordinates and finder chart of 77 Herculis

77 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 77 Herculis are provided in the following table:

Right Ascension J2000 17h 26m 44s

Declination J2000 +48° 15’ 35”

Galactic Longitude 74.7°

Galactic Latitude 33.66°

Constellation Hercules

The simplified sky map below shows the position of 77 Herculis in the sky:

Simplified finder chart for 77 Herculis.

Visibility of 77 Herculis from your location

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

77 Herculis is circumpolar and transits at 05:36 UTC (altitude: 86.8°)

Digitized Sky Survey image of 77 Herculis

The image below is a photograph of 77 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 77 Herculis is 0.002 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 77 Herculis. The red arrow shows the motion of 77 Herculis during the next 100000 years (3.33 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of 77 Herculis from the Sun and relative movement

77 Herculis is distant 363.03 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 111.36 pc

Distance (light year) 363.03 ly

Heliocentric radial velocity -9 km/s

Proper Motion RA 0.002 arcsec/year

Proper Motion Dec -0.004 arcsec/year

Spectral properties of 77 Herculis

77 Herculis belongs to spectral class A4 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.62

Spectral Type A4V

Color Index (B-V) 0.12

Temperature of 77 Herculis 8839K

The red dot in the diagram below shows where 77 Herculis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 77 Herculis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 77 Herculis

Flamsteed designation 77 Herculis

Henry Draper Catalogue HD158414

SAO Catalogue SAO46723

Hipparcos Catalogue HIP85379

Durchmusterung Catalogue BD+48 2517

FK5 Catalogue 650

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In Evidence

Other stars in Hercules