HR4132

HR4132 is a double sub-giant star in the constellation of Ursa Major.

HR4132 visual magnitude is 4.75. Because of its moderate brightness, HR4132 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4132:

Color of HR4132 ⬤

Magnitude of HR4132 4.75

Class Sub-giant

VISIBILITY RIGHT NOW HR4132 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 18°.

Celestial coordinates and finder chart of HR4132

HR4132 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 HR4132 are provided in the following table:

Right Ascension J2000 10h 33m 13s

Declination J2000 +40° 25’ 32”

Galactic Longitude 178.93°

Galactic Latitude 58.62°

Constellation Ursa Major

The simplified sky map below shows the position of HR4132 in the sky:

Simplified finder chart for HR4132.

Visibility of HR4132 from your location

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

HR4132 is circumpolar and transits at 22:08 UTC (altitude: 78.9°)

Digitized Sky Survey image of HR4132

The image below is a photograph of HR4132 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 HR4132 is -0.14 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR4132. The red arrow shows the motion of HR4132 during the next 1000 years (-2.33 arcmin in Right Ascension and 0.10 arcmin in declination);

Distance of HR4132 from the Sun and relative movement

HR4132 is distant 111.91 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 34.33 pc

Distance (light year) 111.91 ly

Heliocentric radial velocity 9 km/s

Proper Motion RA -0.14 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR4132

HR4132 belongs to spectral class A7 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 2.07

Spectral Type A7IV

Color Index (B-V) 0.23

Temperature of HR4132 7938K

The red dot in the diagram below shows where HR4132 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4132. Attribution: Richard Powell / CC BY-SA

HR4132 star system properties

HR4132 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 HR4132 double sysyem:

Main star magnitude 4.75

Secondary star magnitude 11.75

Magnitude difference 7

Separation 19.3 arcsec

Alternative designations of HR4132

Henry Draper Catalogue HD91312

SAO Catalogue SAO43379

Hipparcos Catalogue HIP51658

Durchmusterung Catalogue BD+41 2101

FK5 Catalogue 2844

Aitken Double Star Catalogue ADS7826

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Other stars in Ursa Major