HR4407

HR4407 is a hypergiant star in the constellation of Ursa Major.

HR4407 visual magnitude is 5.75. Because of its reltive faintness, HR4407 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 HR4407:

Color of HR4407 ⬤

Magnitude of HR4407 5.75

Class Hypergiant

VISIBILITY RIGHT NOW HR4407 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 44°.

Celestial coordinates and finder chart of HR4407

HR4407 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 HR4407 are provided in the following table:

Right Ascension J2000 11h 25m 57s

Declination J2000 +55° 51’ 02”

Galactic Longitude 145.26°

Galactic Latitude 57.42°

Constellation Ursa Major

The simplified sky map below shows the position of HR4407 in the sky:

Simplified finder chart for HR4407.

Visibility of HR4407 from your location

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

HR4407 is circumpolar and transits at 23:01 UTC (altitude: 85.6°)

Digitized Sky Survey image of HR4407

The image below is a photograph of HR4407 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 HR4407 is -0.066 arcsec per year in Right Ascension and 0.048 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4407. The red arrow shows the motion of HR4407 during the next 10000 years (-11.00 arcmin in Right Ascension and 8.00 arcmin in declination);

Distance of HR4407 from the Sun and relative movement

HR4407 is distant 347.55 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 106.61 pc

Distance (light year) 347.55 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.066 arcsec/year

Proper Motion Dec 0.048 arcsec/year

Spectral properties of HR4407

HR4407 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.61

Spectral Type K0III

Color Index (B-V)

Temperature of HR4407 10125K

The red dot in the diagram below shows where HR4407 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4407. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4407

Henry Draper Catalogue HD99283

SAO Catalogue SAO28017

Hipparcos Catalogue HIP55797

Durchmusterung Catalogue BD+56 1518

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In Evidence

Other stars in Ursa Major