Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]


HR6405 is a double hypergiant star in the constellation of Scorpius.

HR6405 visual magnitude is 6.12. Because of its reltive faintness, HR6405 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 HR6405:

HR6405 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR6405

HR6405 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6405 are provided in the following table:

17h 16m 21s
-35° 44’ 57”

The simplified sky map below shows the position of HR6405 in the sky:

Finder chart HR6405 star
Simplified finder chart for HR6405.

Visibility of HR6405 from your location

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

Today's HR6405 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 125.7°
Max altitude: 2.8°
Azimuth: 234.3°
HR6405 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6405

The image below is a photograph of HR6405 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 HR6405 is -0.118 arcsec per year in Right Ascension and -0.319 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR6405 star
DSS2 image of HR6405. The red arrow shows the motion of HR6405 during the next 1000 years (-1.97 arcmin in Right Ascension and -5.32 arcmin in declination);

Distance of HR6405 from the Sun and relative movement

HR6405 is distant 105.06 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

32.23 pc
105.06 ly
-1 km/s
-0.118 arcsec/year
-0.319 arcsec/year

Spectral properties of HR6405

HR6405 belongs to spectral class G0 and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where HR6405 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6405. Attribution: Richard Powell / CC BY-SA

HR6405 star system properties

HR6405 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR6405 double sysyem:

36.5 arcsec

Alternative designations of HR6405