HR7817

Below the horizon. Rise: 19:52 | Tran: 21:37 | Set: 23:21

Alt: -73.83° Az: 349.64° Direction: North

HR7817 is a bright giant star of spectral class B8 in the constellation of Microscopium.

HR7817 visual magnitude is 6.1. Because of its faintness, HR7817 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 HR7817. The red arrow shows the motion of HR7817 during the next 10000 years (1.33 arcmin in Right Ascension and -3.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 30m 21s

Declination -35° 30’ 44”

Hour Angle 11h 45m 54s

Sideral Time 08h 16m 15s

J2000

Right Ascension 20h 28m 46s

Declination -35° 35’ 44”

Galactic Coordinates

Galactic Longitude 6.69°

Galactic Latitude -34.31°

Finder Chart

Simplified finder chart for HR7817.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.1

Class Bright giant

Absolute magnitude -0.32

Spectral Type B8II

Color Index (B-V) -0.11

Temperature 11744K

The red dot in the diagram below shows where HR7817 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7817. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7817 is distant 626.92 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 192.31

Distance (light year) 626.92

Radial Speed -9 km/s

Proper Motion RA 0.008 arcsec/y

Proper Motion Dec -0.021"/y

Alternative Designations

Henry Draper Catalogue HD194783

SAO Catalogue SAO212160

Hipparcos Catalogue HIP101017

Durchmusterung Catalogue CD-3614166

FK5 Catalogue 3637

Visibility from Your Location

Today's HR7817 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 125.5° RISE 19:52

Max altitude: 3.0° TRANSIT 21:37

Azimuth: 234.5° SET 23:21

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

Location

Other stars in Microscopium