HR7520

HR7520 is a variable giant star in the constellation of Cygnus.

HR7520 visual magnitude is 6.57. Because of its reltive faintness, HR7520 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 HR7520:

Color of HR7520 ⬤

Magnitude of HR7520 6.57

Class Giant

VISIBILITY RIGHT NOW HR7520 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7520

HR7520 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 HR7520 are provided in the following table:

Right Ascension J2000 19h 44m 38s

Declination J2000 +34° 24’ 50”

Galactic Longitude 69.22°

Galactic Latitude 5.1°

Constellation Cygnus

The simplified sky map below shows the position of HR7520 in the sky:

Simplified finder chart for HR7520.

Visibility of HR7520 from your location

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

Today's HR7520 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 55.6° RISE 22:24

Max altitude: 72.9° TRANSIT 8:22

Azimuth: 304.4° SET 18:17

RIGHT NOW HR7520 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7520

The image below is a photograph of HR7520 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 HR7520 is 0.004 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR7520. The red arrow shows the motion of HR7520 during the next 100000 years (6.67 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of HR7520 from the Sun and relative movement

HR7520 is distant 829.52 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 254.45 pc

Distance (light year) 829.52 ly

Heliocentric radial velocity 9 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of HR7520

HR7520 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.46

Spectral Type M1III

Color Index (B-V)

Temperature of HR7520 10125K

The red dot in the diagram below shows where HR7520 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7520. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7520

Henry Draper Catalogue HD186702

SAO Catalogue SAO68783

Hipparcos Catalogue HIP97142

Durchmusterung Catalogue BD+34 3691

General Catalogue of Variable Stars 12372

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In Evidence

Other stars in Cygnus