HR4098

HR4098 is a double main-sequence star in the constellation of Ursa Major.

HR4098 visual magnitude is 6.44. Because of its reltive faintness, HR4098 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 HR4098:

Color of HR4098 ⬤

Magnitude of HR4098 6.44

Class Main-sequence

VISIBILITY RIGHT NOW HR4098 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 21°.

Celestial coordinates and finder chart of HR4098

HR4098 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 HR4098 are provided in the following table:

Right Ascension J2000 10h 28m 03s

Declination J2000 +48° 47’ 04”

Galactic Longitude 165.08°

Galactic Latitude 54.91°

Constellation Ursa Major

The simplified sky map below shows the position of HR4098 in the sky:

Simplified finder chart for HR4098.

Visibility of HR4098 from your location

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

HR4098 is circumpolar and transits at 22:03 UTC (altitude: 87.3°)

Digitized Sky Survey image of HR4098

The image below is a photograph of HR4098 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 HR4098 is 0.079 arcsec per year in Right Ascension and -0.884 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR4098. The red arrow shows the motion of HR4098 during the next 1000 years (1.32 arcmin in Right Ascension and -14.73 arcmin in declination);

Distance of HR4098 from the Sun and relative movement

HR4098 is distant 76.80 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 23.56 pc

Distance (light year) 76.80 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA 0.079 arcsec/year

Proper Motion Dec -0.884 arcsec/year

Spectral properties of HR4098

HR4098 belongs to spectral class F9 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 4.58

Spectral Type F9V

Color Index (B-V) 0.6

Temperature of HR4098 5968K

The red dot in the diagram below shows where HR4098 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4098. Attribution: Richard Powell / CC BY-SA

HR4098 star system properties

HR4098 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 HR4098 double sysyem:

Main star magnitude 6.44

Secondary star magnitude 12.44

Magnitude difference 6

Separation 4.7 arcsec

Alternative designations of HR4098

Henry Draper Catalogue HD90508

SAO Catalogue SAO43351

Hipparcos Catalogue HIP51248

Durchmusterung Catalogue BD+49 1961

Gliese Catalogue Gl 392 A

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Other stars in Ursa Major