Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR3942

HR3942 is a giant star in the constellation of Leo.

HR3942 visual magnitude is 5.73. Because of its reltive faintness, HR3942 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR3942:

5.73
Giant
HR3942 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR3942

HR3942 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3942 are provided in the following table:

09h 59m 36s
+29° 38’ 43”
198.7°
52.34°
Leo

The simplified sky map below shows the position of HR3942 in the sky:

Finder chart HR3942 star
Simplified finder chart for HR3942.

Visibility of HR3942 from your location

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

Today's HR3942 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.4°
Max altitude: 68.2°
Azimuth: 299.6°
HR3942 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3942

The image below is a photograph of HR3942 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR3942 is -0.095 arcsec per year in Right Ascension and -0.039 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3942 star
DSS2 image of HR3942. The red arrow shows the motion of HR3942 during the next 1000 years (-1.58 arcmin in Right Ascension and -0.65 arcmin in declination);

Distance of HR3942 from the Sun and relative movement

HR3942 is distant 324.38 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

99.50 pc
324.38 ly
-1 km/s
-0.095 arcsec/year
-0.039 arcsec/year

Spectral properties of HR3942

HR3942 belongs to spectral class G9

0.74
G9
4603K

The red dot in the diagram below shows where HR3942 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3942. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3942

SAO81129
SAO81129