HR5857

Below the horizon. Rise: 19:21 | Tran: 22:47 | Set: 2:10

Alt: -48.24° Az: 320.88° Direction: South-South-West

HR5857 is a variable star of spectral class B9 in the constellation of Boötes.

HR5857 visual magnitude is 5.51. Because of its faintness, HR5857 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 HR5857. The red arrow shows the motion of HR5857 during the next 10000 years (-11.17 arcmin in Right Ascension and 5.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 43m 32s

Declination +52° 16’ 52”

Hour Angle 09h 06m 29s

Sidereal Time 00h 50m 02s

J2000

Right Ascension 15h 42m 50s

Declination +52° 21’ 38”

Galactic Coordinates

Galactic Longitude 83.25°

Galactic Latitude 49.42°

Finder Chart

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Finder chart for HR5857.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.51

Class

HR5857 is also a SiCr chemically peculiar star.

Absolute magnitude 0.57

Spectral Type B9

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where HR5857 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR5857. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR5857 is distant 316.50 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 97.09

Distance (light year) 316.50

Radial Speed -16 km/s

Proper Motion RA -0.067 arcsec/y

Proper Motion Dec 0.032"/y

Alternative Designations

Henry Draper Catalogue HD140728

SAO Catalogue SAO29628

Hipparcos Catalogue HIP76957

Durchmusterung Catalogue BD+52 1898

FK5 Catalogue 3247

General Catalogue of Variable Stars BP Boo

Visibility from Your Location

Today's HR5857 rise, transit and set times from Castelli, Argentina are the following (all times relative to the local timezone America/Argentina/Cordoba):

Azimuth: 37.7° RISE 19:21

Max altitude: 11.8° TRANSIT 22:47

Azimuth: 322.3° SET 2:10

Name:	Castelli, Argentina
Latitude:	25° 56' 48.5" S
Longitude:	60° 37' 10.2" W
Timezone:	America/Argentina/Cordoba

Set Location

Other stars in Boötes