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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?
All Constellations » Carina » 


Below the horizon.  Never rises today
Altitude: -48.9°   Azimuth: 156.4°   Direction: South-South-East

HR3721 is a hypergiant star of spectral class A0 in the constellation of Carina.

HR3721 visual magnitude is 5.86. Because of its faintness, HR3721 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR3721

Finder chart HR3721 star
Simplified finder chart for HR3721.

HR3721 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3721 are provided in the following table:

09h 17m 27s
-74° 44’ 04”
Image of HR3721 star
DSS2 image of HR3721. The red arrow shows the motion of HR3721 during the next 10000 years (-6.83 arcmin in Right Ascension and 5.50 arcmin in declination);

Key facts about HR3721


and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3721 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3721. Attribution: Richard Powell / CC BY-SA

Distance of HR3721 from the Sun and relative movement

HR3721 is distant 263.54 light years from the Sun

80.84 pc
263.54 ly
-0.041 arcsec/year
0.033 arcsec/year

Alternative designations of HR3721


Visibility of HR3721 from your location

HR3721 is currently not visible from Greenwich, UK