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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: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
sunny DaytimeWhat's Visible Now?
All Constellations » Ara » 


Altitude: -39.8°   Azimuth: 235.3°   Direction: South-West

HR6478 is a multiple bright giant star in the constellation of Ara.

HR6478 visual magnitude is 5.92. Because of its reltive faintness, HR6478 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 HR6478 is -0.007 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR6478 star
DSS2 image of HR6478. The red arrow shows the motion of HR6478 during the next 100000 years (-11.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Key facts about HR6478

Bright giant

HR6478 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -39.8°
Azimuth: 235.3°
Direction: South-West

Celestial coordinates and finder chart of HR6478

HR6478 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 HR6478 are provided in the following table:

17h 27m 12s
-50° 37’ 49”

The simplified sky map below shows the position of HR6478 in the sky:

Finder chart HR6478 star
Simplified finder chart for HR6478.

Visibility of HR6478 from your location

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

HR6478 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR6478 from the Sun and relative movement

HR6478 is distant 1,671.79 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

512.82 pc
1,671.79 ly
11 km/s
-0.007 arcsec/year
-0.004 arcsec/year

Spectral properties of HR6478

HR6478 belongs to spectral class B9 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR6478 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR6478. Attribution: Richard Powell / CC BY-SA

HR6478 star system properties

HR6478 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR6478 double sysyem:

76.1 arcsec

Alternative designations of HR6478