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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?
All Constellations » Virgo » 


Below the horizon.  Rise: 14:38 | Tran: 19:36 | Set: 0:35
Altitude: -35.5°   Azimuth: 60.2°   Direction: East-North-East

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.

Celestial coordinates and finder chart of HR4901

Finder chart HR4901 star
Simplified finder chart for HR4901.

HR4901 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4901 are provided in the following table:

12h 54m 18s
-11° 38’ 54”
Image of HR4901 star
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);

Key facts about HR4901


and has a luminosity class of V corresponding to a main-sequence star.


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

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

HR4901 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:

0.1 arcsec

Distance of HR4901 from the Sun and relative movement

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.

66.76 pc
217.62 ly
-24 km/s
-0.141 arcsec/year
0.013 arcsec/year

Alternative designations of HR4901


Visibility of HR4901 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: 101.6°
Max altitude: 26.9°
Azimuth: 258.4°