HR4684

Altitude: 64.5° Azimuth: 176.2° Direction: South

HR4684 is a variable sub-giant star in the constellation of Coma Berenices.

HR4684 visual magnitude is 6.48. Because of its reltive faintness, HR4684 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 HR4684:

Color of HR4684 ⬤

Magnitude of HR4684 6.48

Class Sub-giant

VISIBILITY RIGHT NOW

HR4684 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 64.5°
Azimuth: 176.2°
Direction: South

Celestial coordinates and finder chart of HR4684

HR4684 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 HR4684 are provided in the following table:

Right Ascension J2000 12h 19m 02s

Declination J2000 +26° 00’ 28”

Galactic Longitude 219.89°

Galactic Latitude 82.67°

Constellation Coma Berenices

The simplified sky map below shows the position of HR4684 in the sky:

Simplified finder chart for HR4684.

Visibility of HR4684 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 HR4684 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: 64.0° RISE 11:54

Max altitude: 64.5° TRANSIT 20:23

Azimuth: 296.0° SET 4:55

RIGHT NOW HR4684 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4684

The image below is a photograph of HR4684 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 HR4684 is -0.004 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4684. The red arrow shows the motion of HR4684 during the next 10000 years (-0.67 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of HR4684 from the Sun and relative movement

HR4684 is distant 248.10 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

Distance (parsec) 76.10 pc

Distance (light year) 248.10 ly

Heliocentric radial velocity 1 km/s

Proper Motion RA -0.004 arcsec/year

Proper Motion Dec -0.022 arcsec/year

Spectral properties of HR4684

HR4684 belongs to spectral class A5 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 2.07

Spectral Type A5IV

Color Index (B-V) 0.18

Temperature of HR4684 8321K

The red dot in the diagram below shows where HR4684 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4684. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4684

Henry Draper Catalogue HD107131

SAO Catalogue SAO82237

Hipparcos Catalogue HIP60066

Durchmusterung Catalogue BD+26 2326

General Catalogue of Variable Stars FM Com

In Evidence

Other stars in Coma Berenices