HR7661

HR7661 is a giant star in the constellation of Aquila.

HR7661 visual magnitude is 6.72. Because of its reltive faintness, HR7661 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 HR7661:

Color of HR7661 ⬤

Magnitude of HR7661 6.72

Class Giant

VISIBILITY RIGHT NOW HR7661 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR7661

HR7661 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 HR7661 are provided in the following table:

Right Ascension J2000 20h 04m 01s

Declination J2000 -07° 28’ 10”

Galactic Longitude 34.46°

Galactic Latitude -19.52°

Constellation Aquila

The simplified sky map below shows the position of HR7661 in the sky:

Simplified finder chart for HR7661.

Visibility of HR7661 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 HR7661 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: 97.5° RISE 23:14

Max altitude: 31.1° TRANSIT 4:38

Azimuth: 262.5° SET 9:58

RIGHT NOW HR7661 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7661

The image below is a photograph of HR7661 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 HR7661 is 0.015 arcsec per year in Right Ascension and -0.048 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7661. The red arrow shows the motion of HR7661 during the next 10000 years (2.50 arcmin in Right Ascension and -8.00 arcmin in declination);

Distance of HR7661 from the Sun and relative movement

HR7661 is distant 211.83 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 64.98 pc

Distance (light year) 211.83 ly

Heliocentric radial velocity 4 km/s

Proper Motion RA 0.015 arcsec/year

Proper Motion Dec -0.048 arcsec/year

Spectral properties of HR7661

HR7661 belongs to spectral class F4 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 2.66

Spectral Type F4III

Color Index (B-V) 0.35

Temperature of HR7661 7158K

The red dot in the diagram below shows where HR7661 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7661. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7661

Henry Draper Catalogue HD190172

SAO Catalogue SAO144038

Hipparcos Catalogue HIP98809

Durchmusterung Catalogue BD-07 5159

In Evidence

Other stars in Aquila