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: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
sunny DaytimeWhat's Visible Now
All Constellations » Triangulum » 


Altitude: 43.5°   Azimuth: 94.5°   Direction: East

HR680 is a hypergiant star in the constellation of Triangulum.

HR680 visual magnitude is 6.47. Because of its reltive faintness, HR680 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 HR680:


HR680 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 43.5°
Azimuth: 94.5°
Direction: East

Celestial coordinates and finder chart of HR680

HR680 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR680 are provided in the following table:

02h 20m 04s
+30° 11’ 17”

The simplified sky map below shows the position of HR680 in the sky:

Finder chart HR680 star
Simplified finder chart for HR680.

Visibility of HR680 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 HR680 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: 59.8°
Max altitude: 68.7°
Azimuth: 300.2°
HR680 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR680

The image below is a photograph of HR680 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 HR680 is 0.016 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR680 star
DSS2 image of HR680. The red arrow shows the motion of HR680 during the next 10000 years (2.67 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of HR680 from the Sun and relative movement

HR680 is distant 722.84 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

221.73 pc
722.84 ly
-1 km/s
0.016 arcsec/year
-0.023 arcsec/year

Spectral properties of HR680

HR680 belongs to spectral class K0


The red dot in the diagram below shows where HR680 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR680. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR680