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

HR4242

HR4242 is a giant star in the constellation of Ursa Major.

HR4242 visual magnitude is 6.44. Because of its reltive faintness, HR4242 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 HR4242:

6.44
Giant
HR4242 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 28°.

Celestial coordinates and finder chart of HR4242

HR4242 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 HR4242 are provided in the following table:

10h 52m 31s
+52° 30’ 12”
155.91°
56.33°
Ursa Major

The simplified sky map below shows the position of HR4242 in the sky:

Finder chart HR4242 star
Simplified finder chart for HR4242.

Visibility of HR4242 from your location

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

HR4242 is circumpolar and transits at 10:53 UTC (altitude: 89.0°)

Digitized Sky Survey image of HR4242

The image below is a photograph of HR4242 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 HR4242 is -0.071 arcsec per year in Right Ascension and -0.052 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4242 star
DSS2 image of HR4242. The red arrow shows the motion of HR4242 during the next 10000 years (-11.83 arcmin in Right Ascension and -8.67 arcmin in declination);

Distance of HR4242 from the Sun and relative movement

HR4242 is distant 314.98 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

96.62 pc
314.98 ly
-3 km/s
-0.071 arcsec/year
-0.052 arcsec/year

Spectral properties of HR4242

HR4242 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

1.51
K2III
4493K

The red dot in the diagram below shows where HR4242 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4242. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4242

SAO27810
SAO27810