HR4542

Altitude: -2.9° Azimuth: 227.6° Direction: South-West

HR4542 is a giant star in the constellation of Hydra.

HR4542 visual magnitude is 6.48. Because of its reltive faintness, HR4542 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 HR4542:

Color of HR4542 ⬤

Magnitude of HR4542 6.48

Class Giant

VISIBILITY RIGHT NOW

HR4542 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -2.9°
Azimuth: 227.6°
Direction: South-West

Celestial coordinates and finder chart of HR4542

HR4542 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4542 are provided in the following table:

Right Ascension J2000 11h 50m 37s

Declination J2000 -27° 16’ 40”

Galactic Longitude 286.67°

Galactic Latitude 33.67°

Constellation Hydra

The simplified sky map below shows the position of HR4542 in the sky:

Simplified finder chart for HR4542.

Visibility of HR4542 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 HR4542 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: 117.3° RISE 16:21

Max altitude: 11.2° TRANSIT 19:39

Azimuth: 242.7° SET 22:56

RIGHT NOW HR4542 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4542

The image below is a photograph of HR4542 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 HR4542 is -0.087 arcsec per year in Right Ascension and 0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4542. The red arrow shows the motion of HR4542 during the next 10000 years (-14.50 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR4542 from the Sun and relative movement

HR4542 is distant 495.44 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 151.98 pc

Distance (light year) 495.44 ly

Heliocentric radial velocity -3 km/s

Proper Motion RA -0.087 arcsec/year

Proper Motion Dec 0.01 arcsec/year

Spectral properties of HR4542

HR4542 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.57

Spectral Type G8III

Color Index (B-V) 0.98

Temperature of HR4542 4791K

The red dot in the diagram below shows where HR4542 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4542. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4542

Henry Draper Catalogue HD102888

SAO Catalogue SAO180232

Hipparcos Catalogue HIP57749

Durchmusterung Catalogue CD-26 8807

In Evidence

Other stars in Hydra