Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:09 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Ara » 


Altitude: -7.5°   Azimuth: 175.9°   Direction: South

HR6477 is a variable and multiple main-sequence star in the constellation of Ara.

HR6477 visual magnitude is 5.29. Because of its reltive faintness, HR6477 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 HR6477:


HR6477 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.5°
Azimuth: 175.9°
Direction: South

Celestial coordinates and finder chart of HR6477

HR6477 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 HR6477 are provided in the following table:

17h 26m 51s
-45° 50’ 36”

The simplified sky map below shows the position of HR6477 in the sky:

Finder chart HR6477 star
Simplified finder chart for HR6477.

Visibility of HR6477 from your location

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

HR6477 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR6477

The image below is a photograph of HR6477 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 HR6477 is -0.04 arcsec per year in Right Ascension and -0.04 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6477 star
DSS2 image of HR6477. The red arrow shows the motion of HR6477 during the next 10000 years (-6.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of HR6477 from the Sun and relative movement

HR6477 is distant 599.26 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

183.82 pc
599.26 ly
-9 km/s
-0.04 arcsec/year
-0.04 arcsec/year

Spectral properties of HR6477

HR6477 belongs to spectral class B7 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6477 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR6477. Attribution: Richard Powell / CC BY-SA

HR6477 star system properties

HR6477 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR6477 double sysyem:

2.3 arcsec

Alternative designations of HR6477