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

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:

5.58
Hypergiant
HR2721 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 9°.

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:

07h 15m 50s
+47° 14’ 24”
170.34°
23.52°
Lynx

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

Finder chart HR2721 star
Simplified finder chart for HR2721.

Visibility of HR2721 from your location

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

HR2721 is circumpolar and transits at 22:47 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.

Image of HR2721 star
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.

16.86 pc
54.97 ly
85 km/s
0.03 arcsec/year
-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.

4.45
G0V
6047K

The red dot in the diagram below shows where HR2721 is situated in the Hertzsprungā€“Russell diagram.

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

Alternative designations of HR2721

SAO41644
SAO41644