HR4547

Above the horizon. Rise: 6:39 | Tran: 11:34 | Set: 16:29

Alt: 16.95° Az: 137.84° Direction: South-East

HR4547 is a variable and double giant star of spectral class F1 in the constellation of Crater.

HR4547 visual magnitude is 6.35. Because of its faintness, HR4547 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 HR4547. The red arrow shows the motion of HR4547 during the next 1000 years (-3.97 arcmin in Right Ascension and 0.80 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 52m 37s

Declination -12° 19’ 32”

Hour Angle 21h 15m 40s

Sideral Time 09h 08m 17s

J2000

Right Ascension 11h 51m 21s

Declination -12° 11’ 16”

Galactic Coordinates

Galactic Longitude 280.66°

Galactic Latitude 48.07°

Finder Chart

Simplified finder chart for HR4547.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.35

Class Giant

Absolute magnitude 3.09

Spectral Type F1III

Color Index (B-V) 0.4

Temperature 6880K

The red dot in the diagram below shows where HR4547 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4547. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4547 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 HR4547 double sysyem:

Main star magnitude 6.35

Secondary star magnitude 13.55

Magnitude difference 7.2

Separation 30.7 arcsec

Distance, Radial Speed, Proper Motion

HR4547 is distant 146.52 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 44.94

Distance (light year) 146.52

Radial Speed 9 km/s

Proper Motion RA -0.238 arcsec/y

Proper Motion Dec 0.048"/y

Alternative Designations

Henry Draper Catalogue HD102990

SAO Catalogue SAO156940

Hipparcos Catalogue HIP57819

Durchmusterung Catalogue BD-11 3190

FK5 Catalogue 2947

General Catalogue of Variable Stars 5365

Visibility from Your Location

Today's HR4547 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.3° RISE 6:39

Max altitude: 26.2° TRANSIT 11:34

Azimuth: 257.7° SET 16:29

Set Location

Other stars in Crater