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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sunny DaytimeWhat's Visible Now?
All Constellations » Serpens » 


Altitude: 27.4°   Azimuth: 221.3°   Direction: South-West

HR6999 is a multiple sub-giant star in the constellation of Serpens.

HR6999 visual magnitude is 6.49. Because of its reltive faintness, HR6999 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 HR6999 is -0.009 arcsec per year in Right Ascension and 0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6999 star
DSS2 image of HR6999. The red arrow shows the motion of HR6999 during the next 10000 years (-1.50 arcmin in Right Ascension and 5.33 arcmin in declination);

Key facts about HR6999


HR6999 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 27.4°
Azimuth: 221.3°
Direction: South-West

Celestial coordinates and finder chart of HR6999

HR6999 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 HR6999 are provided in the following table:

18h 38m 23s
-03° 11’ 36”

The simplified sky map below shows the position of HR6999 in the sky:

Finder chart HR6999 star
Simplified finder chart for HR6999.

Visibility of HR6999 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 HR6999 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: 93.2°
Max altitude: 35.3°
Azimuth: 266.8°

Distance of HR6999 from the Sun and relative movement

HR6999 is distant 162.92 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

49.98 pc
162.92 ly
-21 km/s
-0.009 arcsec/year
0.032 arcsec/year

Spectral properties of HR6999

HR6999 belongs to spectral class F9 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR6999 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6999. Attribution: Richard Powell / CC BY-SA

HR6999 star system properties

HR6999 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 HR6999 double sysyem:

0.1 arcsec

Alternative designations of HR6999