HR7166

Below the horizon. Rise: 21:02 | Tran: 1:58 | Set: 6:50

Alt: -19.39° Az: 86.27° Direction: South

HR7166 is a variable and double sub-giant star of spectral class B5 in the constellation of Sagittarius.

HR7166 visual magnitude is 5.53. Because of its faintness, HR7166 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 HR7166. The red arrow shows the motion of HR7166 during the next 10000 years (0.33 arcmin in Right Ascension and -3.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 00m 49s

Declination -12° 48’ 13”

Hour Angle 16h 59m 25s

Sidereal Time 12h 00m 15s

J2000

Right Ascension 18h 59m 23s

Declination -12° 50’ 26”

Galactic Coordinates

Galactic Longitude 22.33°

Galactic Latitude -7.55°

Finder Chart

Loading map...

Finder chart for HR7166.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.53

Class Sub-giant

Absolute magnitude -0.46

Spectral Type B5IV

Color Index (B-V) -0.04

Temperature 10653K

The red dot in the diagram below shows where HR7166 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7166. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7166 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7166 double sysyem:

Main star magnitude 5.53

Secondary star magnitude 6.03

Magnitude difference 0.5

Separation 0.4 arcsec

Distance, Radial Speed, Proper Motion

HR7166 is distant 514.20 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 157.73

Distance (light year) 514.20

Radial Speed -13 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec -0.018"/y

Alternative Designations

Henry Draper Catalogue HD176162

SAO Catalogue SAO162052

Hipparcos Catalogue HIP93225

Durchmusterung Catalogue BD-13 5172

General Catalogue of Variable Stars Var

Visibility from Your Location

Today's HR7166 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.8° RISE 21:02

Max altitude: 25.7° TRANSIT 1:58

Azimuth: 257.2° SET 6:50

Set Location

Other stars in Sagittarius