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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: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations » Ophiuchus » 

HR6689

Altitude: 1.4°   Azimuth: 91.7°   Direction: East

HR6689 is a double main-sequence star in the constellation of Ophiuchus.

HR6689 visual magnitude is 5.97. Because of its reltive faintness, HR6689 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR6689 is 0.028 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6689 star
DSS2 image of HR6689. The red arrow shows the motion of HR6689 during the next 10000 years (4.67 arcmin in Right Ascension and -2.67 arcmin in declination);

Key facts about HR6689

5.97
Main-sequence

HR6689 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 1.4°
Azimuth: 91.7°
Direction: East

Celestial coordinates and finder chart of HR6689

HR6689 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 HR6689 are provided in the following table:

17h 57m 04s
+00° 03’ 59”
26.7°
12.1°
Ophiuchus

The simplified sky map below shows the position of HR6689 in the sky:

Finder chart HR6689 star
Simplified finder chart for HR6689.

Visibility of HR6689 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 HR6689 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: 89.9°
Max altitude: 38.6°
Azimuth: 270.1°

Distance of HR6689 from the Sun and relative movement

HR6689 is distant 311.66 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

95.60 pc
311.66 ly
-11 km/s
0.028 arcsec/year
-0.016 arcsec/year

Spectral properties of HR6689

HR6689 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

1.07
A3V
9028K

The red dot in the diagram below shows where HR6689 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6689. Attribution: Richard Powell / CC BY-SA

HR6689 star system properties

HR6689 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 HR6689 double sysyem:

5.97
6.17
0.2
0.2 arcsec

Alternative designations of HR6689

SAO122950
SAO122950