HR2721

HR2721 is a hypergiant star in the constellation of Lynx.

HR2721 visual magnitude is 5.58. Because of its reltive faintness, HR2721 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 HR2721:

Color of HR2721 ⬤

Magnitude of HR2721 5.58

Class Hypergiant

VISIBILITY RIGHT NOW HR2721 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 10°.

Celestial coordinates and finder chart of HR2721

HR2721 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 HR2721 are provided in the following table:

Right Ascension J2000 07h 15m 50s

Declination J2000 +47° 14’ 24”

Galactic Longitude 170.34°

Galactic Latitude 23.52°

Constellation Lynx

The simplified sky map below shows the position of HR2721 in the sky:

Simplified finder chart for HR2721.

Visibility of HR2721 from your location

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

HR2721 is circumpolar and transits at 14:28 UTC (altitude: 85.8°)

Digitized Sky Survey image of HR2721

The image below is a photograph of HR2721 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 HR2721 is 0.03 arcsec per year in Right Ascension and -0.183 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR2721. The red arrow shows the motion of HR2721 during the next 1000 years (0.50 arcmin in Right Ascension and -3.05 arcmin in declination);

Distance of HR2721 from the Sun and relative movement

HR2721 is distant 54.97 light years from the Sun and it is moving far from the Sun at the speed of 85 kilometers per second.

Distance (parsec) 16.86 pc

Distance (light year) 54.97 ly

Heliocentric radial velocity 85 km/s

Proper Motion RA 0.03 arcsec/year

Proper Motion Dec -0.183 arcsec/year

Spectral properties of HR2721

HR2721 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 4.45

Spectral Type G0V

Color Index (B-V) 0.58

Temperature of HR2721 6047K

The red dot in the diagram below shows where HR2721 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2721. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2721

Henry Draper Catalogue HD55575

SAO Catalogue SAO41644

Hipparcos Catalogue HIP35136

Durchmusterung Catalogue BD+47 1419

Gliese Catalogue GJ 1095

FK5 Catalogue 1190

In Evidence

Other stars in Lynx