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public LocationGreenwich, UK
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
sunny   (Daytime)   What's Visible Now?
All Constellations » Musca » 


Below the horizon.  Never rises today
Alt: -66.50°   Az: 163.04°   Direction: South-South-East

HR4664 is a hypergiant star of spectral class A0 in the constellation of Musca.

HR4664 visual magnitude is 6.22. Because of its faintness, HR4664 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.

HR4664 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere.

Image of HR4664 star
DSS2 image of HR4664. The red arrow shows the motion of HR4664 during the next 10000 years (-8.83 arcmin in Right Ascension and -4.33 arcmin in declination);

Celestial Coordinates


12h 17m 46s
-72° 45’ 03”
13h 32m 22s
01h 50m 08s


12h 16m 23s
-72° 36’ 52”

Galactic Coordinates


Finder Chart

Finder chart HR4664 star
Simplified finder chart for HR4664.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR4664 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4664. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4664 is distant 333.33 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

102.25 pc
333.33 ly
28 km/s
-0.053 arcsec/y
-0.026 "/y

Alternative Designations


Visibility from Your Location

HR4664 is currently not visible from Greenwich, UK