HR7681

Below the horizon. Rise: 15:44 | Tran: 21:22 | Set: 3:04

Alt: -2.05° Az: 266.14° Direction: West

HR7681 is a hypergiant star of spectral class K0 in the constellation of Aquila.

HR7681 visual magnitude is 6.47. Because of its faintness, HR7681 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR7681. The red arrow shows the motion of HR7681 during the next 10000 years (7.50 arcmin in Right Ascension and -7.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 07m 30s

Declination -04° 00’ 21”

Hour Angle 05h 53m 00s

Sideral Time 02h 00m 31s

J2000

Right Ascension 20h 06m 12s

Declination -04° 04’ 41”

Galactic Coordinates

Galactic Longitude 37.92°

Galactic Latitude -18.48°

Finder Chart

Simplified finder chart for HR7681.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.47

Class Hypergiant

Absolute magnitude 1.37

Spectral Type K0

Color Index (B-V) 1.16

Temperature 4389K

The red dot in the diagram below shows where HR7681 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7681. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7681 is distant 340.65 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

Distance (parsec) 104.49

Distance (light year) 340.65

Radial Speed -2 km/s

Proper Motion RA 0.045 arcsec/y

Proper Motion Dec -0.045"/y

Alternative Designations

Henry Draper Catalogue HD190664

SAO Catalogue SAO144062

Hipparcos Catalogue HIP99024

Durchmusterung Catalogue BD-04 5013

Visibility from Your Location

Today's HR7681 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 94.0° RISE 15:44

Max altitude: 34.5° TRANSIT 21:22

Azimuth: 266.0° SET 3:04

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Aquila