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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: 6:52  
clear_day Transit: 12:11  
SunsetSet: 17:31
sunny DaytimeWhat's Visible Now?
All Constellations » Scorpius » 


Altitude: 4.4°   Azimuth: 204.8°   Direction: South-South-West

HR6403 is a main-sequence star in the constellation of Scorpius.

HR6403 visual magnitude is 6.21. Because of its reltive faintness, HR6403 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 HR6403 is -0.001 arcsec per year in Right Ascension and -0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6403 star
DSS2 image of HR6403. The red arrow shows the motion of HR6403 during the next 10000 years (-0.17 arcmin in Right Ascension and -6.17 arcmin in declination);

Key facts about HR6403


HR6403 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.4°
Azimuth: 204.8°
Direction: South-South-West

Celestial coordinates and finder chart of HR6403

HR6403 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 HR6403 are provided in the following table:

17h 15m 51s
-30° 12’ 38”

The simplified sky map below shows the position of HR6403 in the sky:

Finder chart HR6403 star
Simplified finder chart for HR6403.

Visibility of HR6403 from your location

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

Today's HR6403 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 120.2°
Max altitude: 8.3°
Azimuth: 239.8°

Distance of HR6403 from the Sun and relative movement

HR6403 is distant 370.03 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

113.51 pc
370.03 ly
-4 km/s
-0.001 arcsec/year
-0.037 arcsec/year

Spectral properties of HR6403

HR6403 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6403 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6403. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6403