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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sunny DaytimeWhat's Visible Now?
All Constellations » Musca » 

HR4604

Altitude: -66.4°   Azimuth: 211.6°   Direction: South-South-West

HR4604 is a hypergiant star in the constellation of Musca.

HR4604 visual magnitude is 5.35. Because of its reltive faintness, HR4604 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4604 is -0.054 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4604 star
DSS2 image of HR4604. The red arrow shows the motion of HR4604 during the next 10000 years (-9.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about HR4604

5.35
Hypergiant

HR4604 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -66.4°
Azimuth: 211.6°
Direction: South-South-West

Celestial coordinates and finder chart of HR4604

HR4604 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 HR4604 are provided in the following table:

12h 04m 38s
-68° 19’ 45”
298.62°
-5.85°
Musca

The simplified sky map below shows the position of HR4604 in the sky:

Finder chart HR4604 star
Simplified finder chart for HR4604.

Visibility of HR4604 from your location

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

HR4604 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4604 from the Sun and relative movement

HR4604 is distant 339.23 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

104.06 pc
339.23 ly
25 km/s
-0.054 arcsec/year
-0.012 arcsec/year

Spectral properties of HR4604

HR4604 belongs to spectral class A0 and has a luminosity class of IV corresponding to a hypergiant star.

0.26
A0IV
10252K

The red dot in the diagram below shows where HR4604 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4604. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4604

SAO251720
SAO251720