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: 7:04  
clear_day Transit: 12:47  
SunsetSet: 18:30 south
sunny DaytimeWhat's Visible Now
All Constellations » Ophiuchus » 


Altitude: 18.2°   Azimuth: 130.8°   Direction: South-East

HR6504 is a sub-giant star in the constellation of Ophiuchus.

HR6504 visual magnitude is 6.37. Because of its reltive faintness, HR6504 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 HR6504:


HR6504 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 18.2°
Azimuth: 130.8°
Direction: South-East

Celestial coordinates and finder chart of HR6504

HR6504 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6504 are provided in the following table:

17h 28m 02s
-08° 12’ 29”

The simplified sky map below shows the position of HR6504 in the sky:

Finder chart HR6504 star
Simplified finder chart for HR6504.

Visibility of HR6504 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 HR6504 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: 98.2°
Max altitude: 30.3°
Azimuth: 261.8°

Digitized Sky Survey image of HR6504

The image below is a photograph of HR6504 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 HR6504 is -0.081 arcsec per year in Right Ascension and -0.128 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR6504 star
DSS2 image of HR6504. The red arrow shows the motion of HR6504 during the next 1000 years (-1.35 arcmin in Right Ascension and -2.13 arcmin in declination);

Distance of HR6504 from the Sun and relative movement

HR6504 is distant 297.17 light years from the Sun and it is moving towards the Sun at the speed of 64 kilometers per second.

91.16 pc
297.17 ly
-64 km/s
-0.081 arcsec/year
-0.128 arcsec/year

Spectral properties of HR6504

HR6504 belongs to spectral class F5 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR6504 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6504. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6504