Your guide to the Solar System and the night sky
🌎  Greenwich, United Kingdom [change]

HR7780

HR7780 is a giant star in the constellation of Sagitta.

HR7780 visual magnitude is 5.8. Because of its reltive faintness, HR7780 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 HR7780:

5.8
Giant
HR7780 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7780

HR7780 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 HR7780 are provided in the following table:

20h 20m 21s
+17° 47’ 35”
59.26°
-10.44°
Sagitta

The simplified sky map below shows the position of HR7780 in the sky:

Finder chart HR7780 star
Simplified finder chart for HR7780.

Visibility of HR7780 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR7780 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 72.2°
Max altitude: 56.3°
Azimuth: 287.8°
HR7780 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7780

The image below is a photograph of HR7780 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 HR7780 is 0.02 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7780 star
DSS2 image of HR7780. The red arrow shows the motion of HR7780 during the next 10000 years (3.33 arcmin in Right Ascension and -5.50 arcmin in declination);

Distance of HR7780 from the Sun and relative movement

HR7780 is distant 477.31 light years from the Sun and it is moving towards the Sun at the speed of 33 kilometers per second.

146.41 pc
477.31 ly
-33 km/s
0.02 arcsec/year
-0.033 arcsec/year

Spectral properties of HR7780

HR7780 belongs to spectral class K5

-0.03
K5
3809K

The red dot in the diagram below shows where HR7780 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7780. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7780

SAO105991
SAO105991