HR7571

Altitude: -9.9° Azimuth: 259.0° Direction: West

HR7571 is a variable hypergiant star in the constellation of Sagittarius.

HR7571 visual magnitude is 6.48. Because of its reltive faintness, HR7571 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 HR7571:

Color of HR7571 ⬤

Magnitude of HR7571 6.48

Class Hypergiant

VISIBILITY RIGHT NOW

HR7571 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -9.9°
Azimuth: 259.0°
Direction: West

Celestial coordinates and finder chart of HR7571

HR7571 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 HR7571 are provided in the following table:

Right Ascension J2000 19h 53m 06s

Declination J2000 -14° 36’ 11”

Galactic Longitude 26.38°

Galactic Latitude -20.12°

Constellation Sagittarius

The simplified sky map below shows the position of HR7571 in the sky:

Simplified finder chart for HR7571.

Visibility of HR7571 from your location

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

Today's HR7571 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 104.6° RISE 10:38

Max altitude: 23.9° TRANSIT 15:20

Azimuth: 255.4° SET 20:02

Digitized Sky Survey image of HR7571

The image below is a photograph of HR7571 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 HR7571 is -0.004 arcsec per year in Right Ascension and -0.042 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7571. The red arrow shows the motion of HR7571 during the next 10000 years (-0.67 arcmin in Right Ascension and -7.00 arcmin in declination);

Distance of HR7571 from the Sun and relative movement

HR7571 is distant 379.95 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

Distance (parsec) 116.55 pc

Distance (light year) 379.95 ly

Heliocentric radial velocity -2 km/s

Proper Motion RA -0.004 arcsec/year

Proper Motion Dec -0.042 arcsec/year

Spectral properties of HR7571

HR7571 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 1.15

Spectral Type A0V

Color Index (B-V) 0.14

Temperature of HR7571 8658K

The red dot in the diagram below shows where HR7571 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7571. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7571

Henry Draper Catalogue HD187949

SAO Catalogue SAO163080

Hipparcos Catalogue HIP97849

Durchmusterung Catalogue BD-14 5578

General Catalogue of Variable Stars V505 Sgr

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In Evidence

Other stars in Sagittarius