HR4142

Altitude: -50.4° Azimuth: 153.3° Direction: South-South-East

HR4142 is a variable and double giant star in the constellation of Carina.

HR4142 visual magnitude is 4.93. Because of its moderate brightness, HR4142 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4142:

Color of HR4142 ⬤

Magnitude of HR4142 4.93

Class Giant

VISIBILITY RIGHT NOW

HR4142 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -50.4°
Azimuth: 153.3°
Direction: South-South-East

Celestial coordinates and finder chart of HR4142

HR4142 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 HR4142 are provided in the following table:

Right Ascension J2000 10h 31m 01s

Declination J2000 -73° 13’ 18”

Galactic Longitude 293.12°

Galactic Latitude -13.08°

Constellation Carina

The simplified sky map below shows the position of HR4142 in the sky:

Simplified finder chart for HR4142.

Visibility of HR4142 from your location

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

HR4142 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4142

The image below is a photograph of HR4142 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 HR4142 is -0.017 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4142. The red arrow shows the motion of HR4142 during the next 10000 years (-2.83 arcmin in Right Ascension and -0.17 arcmin in declination);

Distance of HR4142 from the Sun and relative movement

HR4142 is distant 964.50 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

Distance (parsec) 295.86 pc

Distance (light year) 964.50 ly

Heliocentric radial velocity 11 km/s

Proper Motion RA -0.017 arcsec/year

Proper Motion Dec -0.001 arcsec/year

Spectral properties of HR4142

HR4142 belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -2.43

Spectral Type K4III

Color Index (B-V) 1.68

Temperature of HR4142 3541K

The red dot in the diagram below shows where HR4142 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4142. Attribution: Richard Powell / CC BY-SA

HR4142 star system properties

HR4142 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 HR4142 double sysyem:

Main star magnitude 4.93

Secondary star magnitude 12.53

Magnitude difference 7.6

Separation 32 arcsec

Alternative designations of HR4142

Henry Draper Catalogue HD91496

SAO Catalogue SAO256723

Hipparcos Catalogue HIP51495

Durchmusterung Catalogue CP-72 981

General Catalogue of Variable Stars 4886

In Evidence

Other stars in Carina