HR6684

Below the horizon. Rise: 18:54 | Tran: 0:55 | Set: 7:01

Alt: -37.50° Az: 350.93° Direction: South

HR6684 is a variable sub-giant star of spectral class B2 in the constellation of Ophiuchus.

HR6684 visual magnitude is 5.82. Because of its faintness, HR6684 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 HR6684. The red arrow shows the motion of HR6684 during the next 100000 years (-8.33 arcmin in Right Ascension and 5.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 57m 36s

Declination +00° 40’ 06”

Hour Angle 11h 31m 14s

Sidereal Time 05h 28m 51s

J2000

Right Ascension 17h 56m 18s

Declination +00° 40’ 13”

Galactic Coordinates

Galactic Longitude 27.16°

Galactic Latitude 12.55°

Finder Chart

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Finder chart for HR6684.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.82

Class Sub-giant

Absolute magnitude -1.21

Spectral Type B2IV

Color Index (B-V) 0.09

Temperature 9125K

The red dot in the diagram below shows where HR6684 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6684. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR6684 is distant 829.52 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

Distance (parsec) 254.45

Distance (light year) 829.52

Radial Speed -17 km/s

Proper Motion RA -0.005 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Henry Draper Catalogue HD163472

SAO Catalogue SAO122935

Hipparcos Catalogue HIP87812

Durchmusterung Catalogue BD+00 3813

General Catalogue of Variable Stars V2052 Oph

Visibility from Your Location

Today's HR6684 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.3° RISE 18:54

Max altitude: 39.2° TRANSIT 0:55

Azimuth: 270.7° SET 7:01

Set Location

Other stars in Ophiuchus