HR7801

HR7801 is a bright giant star in the constellation of Sagittarius.

HR7801 visual magnitude is 5.85. Because of its reltive faintness, HR7801 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 HR7801:

Color of HR7801 ⬤

Magnitude of HR7801 5.85

Class Bright giant

VISIBILITY RIGHT NOW HR7801 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7801

HR7801 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7801 are provided in the following table:

Right Ascension J2000 20h 25m 26s

Declination J2000 -28° 39’ 47”

Galactic Longitude 14.55°

Galactic Latitude -32.01°

Constellation Sagittarius

The simplified sky map below shows the position of HR7801 in the sky:

Simplified finder chart for HR7801.

Visibility of HR7801 from your location

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

Today's HR7801 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 118.7° RISE 5:42

Max altitude: 9.9° TRANSIT 8:47

Azimuth: 241.3° SET 11:53

RIGHT NOW HR7801 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7801

The image below is a photograph of HR7801 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 HR7801 is 0.014 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.

DSS2 image of HR7801. The red arrow shows the motion of HR7801 during the next 10000 years (2.33 arcmin in Right Ascension and 1.17 arcmin in declination);

Distance of HR7801 from the Sun and relative movement

HR7801 is distant 540.63 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 165.84 pc

Distance (light year) 540.63 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA 0.014 arcsec/year

Proper Motion Dec 0.007 arcsec/year

Spectral properties of HR7801

HR7801 belongs to spectral class G8 and has a luminosity class of II corresponding to a bright giant star.

Absolute magnitude -0.25

Spectral Type G8II

Color Index (B-V) 1.1

Temperature of HR7801 4515K

The red dot in the diagram below shows where HR7801 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7801. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7801

Henry Draper Catalogue HD194215

SAO Catalogue SAO189264

Hipparcos Catalogue HIP100738

Durchmusterung Catalogue CD-2917049

FK5 Catalogue 1532

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Other stars in Sagittarius