HR4804

Below the horizon. Never rises today

Alt: -42.49° Az: 163.23° Direction: South-South-East

HR4804 is a double main-sequence star of spectral class B8 in the constellation of Musca.

HR4804 visual magnitude is 6.49. Because of its faintness, HR4804 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 HR4804. The red arrow shows the motion of HR4804 during the next 10000 years (-5.33 arcmin in Right Ascension and 5.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 40m 55s

Declination -75° 30’ 32”

Hour Angle 20h 07m 02s

Sidereal Time 08h 47m 58s

J2000

Right Ascension 12h 39m 14s

Declination -75° 22’ 09”

Galactic Coordinates

Galactic Longitude 302.14°

Galactic Latitude -12.52°

Finder Chart

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Finder chart for HR4804.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.49

Class Main-sequence

Absolute magnitude -0.37

Spectral Type B8V

Color Index (B-V) 0.08

Temperature 9226K

The red dot in the diagram below shows where HR4804 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4804. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4804 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR4804 double sysyem:

Main star magnitude 6.49

Secondary star magnitude 8.49

Magnitude difference 2

Separation 2 arcsec

Distance, Radial Speed, Proper Motion

HR4804 is distant 768.87 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

Distance (parsec) 235.85

Distance (light year) 768.87

Radial Speed -20 km/s

Proper Motion RA -0.032 arcsec/y

Proper Motion Dec 0.031"/y

Alternative Designations

Henry Draper Catalogue HD109857

SAO Catalogue SAO256967

Hipparcos Catalogue HIP61738

Durchmusterung Catalogue CP-74 955

Visibility from Your Location

HR4804 is currently not visible from Greenwich, UK

Set Location

Other stars in Musca