Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR7552

HR7552 is a variable hypergiant star in the constellation of Sagittarius.

HR7552 visual magnitude is 5.33. Because of its reltive faintness, HR7552 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 HR7552:

5.33
Hypergiant
HR7552 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7552

HR7552 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 HR7552 are provided in the following table:

19h 51m 50s
-39° 52’ 27”
0.03°
-28.05°
Sagittarius

The simplified sky map below shows the position of HR7552 in the sky:

Finder chart HR7552 star
Simplified finder chart for HR7552.

Visibility of HR7552 from your location

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

HR7552 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR7552

The image below is a photograph of HR7552 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 HR7552 is 0.023 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7552 star
DSS2 image of HR7552. The red arrow shows the motion of HR7552 during the next 10000 years (3.83 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR7552 from the Sun and relative movement

HR7552 is distant 338.88 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

103.95 pc
338.88 ly
-2 km/s
0.023 arcsec/year
-0.015 arcsec/year

Spectral properties of HR7552

HR7552 belongs to spectral class A0 HR7552 is also a CrSr chemically peculiar star.

0.25
A0
10941K

The red dot in the diagram below shows where HR7552 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7552. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7552

SAO229903
SAO229903