Intercrus - HR3743

Intercrus, also designated as , is a multiple hypergiant star in the constellation of Ursa Major.

Intercrus visual magnitude is 5.41. Because of its reltive faintness, Intercrus 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 Intercrus:

Color of Intercrus ⬤

Magnitude of Intercrus 5.41

Class Hypergiant

VISIBILITY RIGHT NOW Intercrus - HR3743 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 30°.

Celestial coordinates and finder chart of Intercrus

Intercrus 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 Intercrus are provided in the following table:

Right Ascension J2000 09h 28m 40s

Declination J2000 +45° 36’ 05”

Galactic Longitude 174.22°

Galactic Latitude 46.07°

Constellation Ursa Major

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

Simplified finder chart for Intercrus - HR3743.

Visibility of Intercrus from your location

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

Intercrus - HR3743 is circumpolar and transits at 21:28 UTC (altitude: 84.1°)

Digitized Sky Survey image of Intercrus

The image below is a photograph of Intercrus 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 Intercrus is -0.007 arcsec per year in Right Ascension and -0.128 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of Intercrus. The red arrow shows the motion of Intercrus during the next 1000 years (-0.12 arcmin in Right Ascension and -2.13 arcmin in declination);

Distance of Intercrus from the Sun and relative movement

Intercrus is distant 287.73 light years from the Sun and it is moving far from the Sun at the speed of 39 kilometers per second.

Distance (parsec) 88.26 pc

Distance (light year) 287.73 ly

Heliocentric radial velocity 39 km/s

Proper Motion RA -0.007 arcsec/year

Proper Motion Dec -0.128 arcsec/year

Spectral properties of Intercrus

Intercrus belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.68

Spectral Type K0III

Color Index (B-V) 0.98

Temperature of Intercrus 4791K

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

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

Intercrus star system properties

Intercrus is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the Intercrus double sysyem:

Main star magnitude 5.41

Secondary star magnitude 7.91

Magnitude difference 2.5

Separation 77.3 arcsec

Alternative designations of Intercrus

Proper Name Intercrus

Henry Draper Catalogue HD81688

SAO Catalogue SAO42876

Hipparcos Catalogue HIP46471

Durchmusterung Catalogue BD+46 1509

FK5 Catalogue 2751

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Other stars in Ursa Major