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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: 6:08  
clear_day Transit: 12:59  
SunsetSet: 19:51
sunny DaytimeWhat's Visible Now?
All Constellations » Capricornus » 


Altitude: 17.1°   Azimuth: 215.4°   Direction: South-West

HR7775 is a multiple hypergiant star in the constellation of Capricornus.

HR7775 visual magnitude is 6.1. Because of its reltive faintness, HR7775 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 HR7775 is 0.043 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7775 star
DSS2 image of HR7775. The red arrow shows the motion of HR7775 during the next 10000 years (7.17 arcmin in Right Ascension and 0.00 arcmin in declination);

Key facts about HR7775


HR7775 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 17.1°
Azimuth: 215.4°
Direction: South-West

Celestial coordinates and finder chart of HR7775

HR7775 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 HR7775 are provided in the following table:

20h 20m 46s
-14° 47’ 06”

The simplified sky map below shows the position of HR7775 in the sky:

Finder chart HR7775 star
Simplified finder chart for HR7775.

Visibility of HR7775 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 HR7775 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: 104.8°
Max altitude: 23.7°
Azimuth: 255.2°

Distance of HR7775 from the Sun and relative movement

HR7775 is distant 313.46 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

96.15 pc
313.46 ly
-18 km/s
0.043 arcsec/year

Spectral properties of HR7775

HR7775 belongs to spectral class A0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR7775 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7775. Attribution: Richard Powell / CC BY-SA

HR7775 star system properties

HR7775 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 HR7775 double sysyem:

0 arcsec

Alternative designations of HR7775