HR6665

Below the horizon. Rise: 19:35 | Tran: 2:57 | Set: 10:15

Alt: -20.00° Az: 335.32° Direction: North-North-West

HR6665 is a multiple hypergiant star of spectral class K0 in the constellation of Hercules.

HR6665 visual magnitude is 6.46. Because of its faintness, HR6665 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 HR6665. The red arrow shows the motion of HR6665 during the next 10000 years (0.00 arcmin in Right Ascension and 5.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 53m 07s

Declination +15° 19’ 16”

Hour Angle 10h 23m 58s

Sidereal Time 04h 17m 06s

J2000

Right Ascension 17h 51m 58s

Declination +15° 19’ 32”

Galactic Coordinates

Galactic Longitude 40.41°

Galactic Latitude 19.92°

Finder Chart

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Finder chart for HR6665.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.46

Class Hypergiant

Absolute magnitude 0.81

Spectral Type K0III

Color Index (B-V)

Temperature 10125K

The red dot in the diagram below shows where HR6665 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6665. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6665 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR6665 double sysyem:

Main star magnitude 6.46

Secondary star magnitude 6.66

Magnitude difference 0.2

Separation 0.8 arcsec

Distance, Radial Speed, Proper Motion

HR6665 is distant 440.54 light years from the Sun and it is moving towards the Sun at the speed of 43 kilometers per second.

Distance (parsec) 135.14

Distance (light year) 440.54

Radial Speed -43 km/s

Proper Motion Dec 0.031"/y

Alternative Designations

Henry Draper Catalogue HD162734

SAO Catalogue SAO103161

Hipparcos Catalogue HIP87427

Durchmusterung Catalogue BD+15 3292

Aitken Double Star Catalogue ADS10850

Visibility from Your Location

Today's HR6665 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 74.7° RISE 19:35

Max altitude: 53.8° TRANSIT 2:57

Azimuth: 285.3° SET 10:15

Set Location

Other stars in Hercules