HR7147

HR7147 is a variable star in the constellation of Hercules.

HR7147 visual magnitude is 6.63. Because of its reltive faintness, HR7147 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 HR7147:

Color of HR7147 ⬤

Magnitude of HR7147 6.63

Class

VISIBILITY RIGHT NOW HR7147 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7147

HR7147 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 HR7147 are provided in the following table:

Right Ascension J2000 18h 56m 03s

Declination J2000 +17° 59’ 42”

Galactic Longitude 49.54°

Galactic Latitude 7.11°

Constellation Hercules

The simplified sky map below shows the position of HR7147 in the sky:

Simplified finder chart for HR7147.

Visibility of HR7147 from your location

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

Today's HR7147 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 72.0° RISE 23:40

Max altitude: 56.5° TRANSIT 7:18

Azimuth: 288.0° SET 14:52

RIGHT NOW HR7147 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7147

The image below is a photograph of HR7147 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 HR7147 is 0.011 arcsec per year in Right Ascension and -0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7147. The red arrow shows the motion of HR7147 during the next 10000 years (1.83 arcmin in Right Ascension and -3.00 arcmin in declination);

Distance of HR7147 from the Sun and relative movement

HR7147 is distant 765.26 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Distance (parsec) 234.74 pc

Distance (light year) 765.26 ly

Heliocentric radial velocity -25 km/s

Proper Motion RA 0.011 arcsec/year

Proper Motion Dec -0.018 arcsec/year

Spectral properties of HR7147

HR7147 belongs to spectral class B9 HR7147 is also a Si chemically peculiar star.

Absolute magnitude -0.22

Spectral Type B9

Color Index (B-V) -0.04

Temperature of HR7147 10653K

The red dot in the diagram below shows where HR7147 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7147. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7147

Henry Draper Catalogue HD175744

SAO Catalogue SAO104271

Hipparcos Catalogue HIP92934

Durchmusterung Catalogue BD+17 3778

General Catalogue of Variable Stars V828 Her

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In Evidence

Other stars in Hercules