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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Leo » 


Altitude: 20.3°   Azimuth: 102.6°   Direction: East-South-East

HR3938 is a giant star in the constellation of Leo.

HR3938 visual magnitude is 6.04. Because of its reltive faintness, HR3938 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR3938 is 0.011 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3938 star
DSS2 image of HR3938. The red arrow shows the motion of HR3938 during the next 10000 years (1.83 arcmin in Right Ascension and -4.00 arcmin in declination);

Key facts about HR3938


HR3938 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.3°
Azimuth: 102.6°
Direction: East-South-East

Celestial coordinates and finder chart of HR3938

HR3938 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 HR3938 are provided in the following table:

09h 58m 07s
+08° 18’ 51”

The simplified sky map below shows the position of HR3938 in the sky:

Finder chart HR3938 star
Simplified finder chart for HR3938.

Visibility of HR3938 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR3938 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 81.7°
Max altitude: 46.8°
Azimuth: 278.3°

Distance of HR3938 from the Sun and relative movement

HR3938 is distant 538.84 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

165.29 pc
538.84 ly
-19 km/s
0.011 arcsec/year
-0.024 arcsec/year

Spectral properties of HR3938

HR3938 belongs to spectral class K3


The red dot in the diagram below shows where HR3938 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3938. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3938