HR7170

Below the horizon. Rise: 0:38 | Tran: 1:56 | Set: 3:11

Alt: -75.53° Az: 3.12° Direction: South-West

HR7170 is a double main-sequence star of spectral class B8 in the constellation of Corona Australis.

HR7170 visual magnitude is 6.4. Because of its faintness, HR7170 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 HR7170. The red arrow shows the motion of HR7170 during the next 10000 years (1.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 02m 47s

Declination -37° 01’ 26”

Hour Angle 12h 03m 54s

Sidereal Time 07h 06m 42s

J2000

Right Ascension 19h 01m 04s

Declination -37° 03’ 42”

Galactic Coordinates

Galactic Longitude 359.76°

Galactic Latitude -17.74°

Finder Chart

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Finder chart for HR7170.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.4

Class Main-sequence

Absolute magnitude 1.96

Spectral Type B8V

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where HR7170 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7170. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7170 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR7170 double sysyem:

Main star magnitude 6.4

Secondary star magnitude 6.6

Magnitude difference 0.2

Separation 12.8 arcsec

Distance, Radial Speed, Proper Motion

HR7170 is distant 252.32 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 77.40

Distance (light year) 252.32

Radial Speed -15 km/s

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.04"/y

Alternative Designations

Henry Draper Catalogue HD176270

SAO Catalogue SAO210816

Hipparcos Catalogue HIP93371

Durchmusterung Catalogue CD-3713018

Visibility from Your Location

Today's HR7170 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 127.0° RISE 0:38

Max altitude: 1.5° TRANSIT 1:56

Azimuth: 233.0° SET 3:11

Set Location

Other stars in Corona Australis