HR1172

Below the horizon. Rise: 4:50 | Tran: 13:00 | Set: 21:09

Alt: -6.81° Az: 322.62° Direction: North-West

HR1172 is a variable and double main-sequence star of spectral class B8 in the constellation of Taurus.

HR1172 visual magnitude is 5.45. Because of its faintness, HR1172 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 HR1172. The red arrow shows the motion of HR1172 during the next 10000 years (3.83 arcmin in Right Ascension and -8.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 03h 49m 51s

Declination +23° 29’ 50”

Hour Angle 09h 15m 37s

Sidereal Time 13h 05m 28s

J2000

Right Ascension 03h 48m 20s

Declination +23° 25’ 15”

Galactic Coordinates

Galactic Longitude 167.33°

Galactic Latitude -23.83°

Finder Chart

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Finder chart for HR1172.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.45

Class Main-sequence

Absolute magnitude 0.37

Spectral Type B8V

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where HR1172 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1172. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR1172 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 HR1172 double sysyem:

Main star magnitude 5.45

Secondary star magnitude 7.45

Magnitude difference 2

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

HR1172 is distant 338.17 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 103.73

Distance (light year) 338.17

Radial Speed 4 km/s

Proper Motion RA 0.023 arcsec/y

Proper Motion Dec -0.05"/y

Alternative Designations

Henry Draper Catalogue HD23753

SAO Catalogue SAO76215

Hipparcos Catalogue HIP17776

Durchmusterung Catalogue BD+22 563

General Catalogue of Variable Stars 1321

Visibility from Your Location

Today's HR1172 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 66.5° RISE 4:50

Max altitude: 62.0° TRANSIT 13:00

Azimuth: 293.5° SET 21:09

Set Location

Other stars in Taurus