HR4901

Below the horizon. Rise: 16:51 | Tran: 21:48 | Set: 2:50

Alt: -36.48° Az: 301.40° Direction: West-North-West

HR4901 is a variable and double main-sequence star of spectral class A2 in the constellation of Virgo.

HR4901 visual magnitude is 6. Because of its faintness, HR4901 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 HR4901. The red arrow shows the motion of HR4901 during the next 1000 years (-2.35 arcmin in Right Ascension and 0.22 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 55m 38s

Declination -11° 47’ 09”

Hour Angle 09h 01m 56s

Sidereal Time 21h 57m 34s

J2000

Right Ascension 12h 54m 18s

Declination -11° 38’ 54”

Galactic Coordinates

Galactic Longitude 304.06°

Galactic Latitude 51.22°

Finder Chart

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Finder chart for HR4901.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6

Class Main-sequence

Absolute magnitude 1.88

Spectral Type A2V

Color Index (B-V) 0.08

Temperature 9226K

The red dot in the diagram below shows where HR4901 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4901. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4901 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 HR4901 double sysyem:

Main star magnitude 6

Secondary star magnitude 6.1

Magnitude difference 0.1

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

HR4901 is distant 217.62 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

Distance (parsec) 66.76

Distance (light year) 217.62

Radial Speed -24 km/s

Proper Motion RA -0.141 arcsec/y

Proper Motion Dec 0.013"/y

Alternative Designations

Henry Draper Catalogue HD112131

SAO Catalogue SAO157584

Hipparcos Catalogue HIP62983

Durchmusterung Catalogue BD-10 3570

General Catalogue of Variable Stars 6019

Visibility from Your Location

Today's HR4901 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 101.8° RISE 16:51

Max altitude: 26.7° TRANSIT 21:48

Azimuth: 258.2° SET 2:50

Set Location

Other stars in Virgo