HR4574

Altitude: 40.4° Azimuth: 273.3° Direction: West

HR4574 is a multiple main-sequence star in the constellation of Ursa Major.

HR4574 visual magnitude is 6.42. Because of its reltive faintness, HR4574 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 HR4574:

Color of HR4574 ⬤

Magnitude of HR4574 6.42

Class Main-sequence

VISIBILITY RIGHT NOW

HR4574 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 40.4°
Azimuth: 273.3°
Direction: West

Celestial coordinates and finder chart of HR4574

HR4574 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 HR4574 are provided in the following table:

Right Ascension J2000 11h 58m 07s

Declination J2000 +32° 16’ 26”

Galactic Longitude 185.75°

Galactic Latitude 77.34°

Constellation Ursa Major

The simplified sky map below shows the position of HR4574 in the sky:

Simplified finder chart for HR4574.

Visibility of HR4574 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 HR4574 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: 57.7° RISE 21:24

Max altitude: 70.8° TRANSIT 6:54

Azimuth: 302.3° SET 16:21

Digitized Sky Survey image of HR4574

The image below is a photograph of HR4574 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 HR4574 is -0.109 arcsec per year in Right Ascension and -0.06 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR4574. The red arrow shows the motion of HR4574 during the next 1000 years (-1.82 arcmin in Right Ascension and -1.00 arcmin in declination);

Distance of HR4574 from the Sun and relative movement

HR4574 is distant 154.58 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

Distance (parsec) 47.42 pc

Distance (light year) 154.58 ly

Heliocentric radial velocity 2 km/s

Proper Motion RA -0.109 arcsec/year

Proper Motion Dec -0.06 arcsec/year

Spectral properties of HR4574

HR4574 belongs to spectral class A9 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 3.04

Spectral Type A9V

Color Index (B-V) 0.29

Temperature of HR4574 7526K

The red dot in the diagram below shows where HR4574 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4574. Attribution: Richard Powell / CC BY-SA

HR4574 star system properties

HR4574 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR4574 double sysyem:

Main star magnitude 6.42

Secondary star magnitude 11.42

Magnitude difference 5

Separation 122.5 arcsec

Alternative designations of HR4574

Henry Draper Catalogue HD103928

SAO Catalogue SAO62774

Hipparcos Catalogue HIP58369

Durchmusterung Catalogue BD+33 2174

FK5 Catalogue 1310

Aitken Double Star Catalogue ADS8368

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In Evidence

Other stars in Ursa Major