HR4140

HR4140 is a variable main-sequence star in the constellation of Carina.

HR4140 visual magnitude is 3.32. Because of its moderate brightness, HR4140 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 HR4140:

Color of HR4140 ⬤

Magnitude of HR4140 3.32

Class Main-sequence

VISIBILITY RIGHT NOW HR4140 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4140

HR4140 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4140 are provided in the following table:

Right Ascension J2000 10h 32m 01s

Declination J2000 -61° 41’ 07”

Galactic Longitude 287.18°

Galactic Latitude -3.15°

Constellation Carina

The simplified sky map below shows the position of HR4140 in the sky:

Simplified finder chart for HR4140.

Visibility of HR4140 from your location

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

HR4140 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4140

The image below is a photograph of HR4140 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 HR4140 is -0.019 arcsec per year in Right Ascension and 0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4140. The red arrow shows the motion of HR4140 during the next 10000 years (-3.17 arcmin in Right Ascension and 1.50 arcmin in declination);

Distance of HR4140 from the Sun and relative movement

HR4140 is distant 496.95 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

Distance (parsec) 152.44 pc

Distance (light year) 496.95 ly

Heliocentric radial velocity 26 km/s

Proper Motion RA -0.019 arcsec/year

Proper Motion Dec 0.009 arcsec/year

Spectral properties of HR4140

HR4140 belongs to spectral class B4 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -2.60

Spectral Type B4V

Color Index (B-V) -0.09

Temperature of HR4140 11407K

The red dot in the diagram below shows where HR4140 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4140. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4140

Henry Draper Catalogue HD91465

SAO Catalogue SAO251006

Hipparcos Catalogue HIP51576

Durchmusterung Catalogue CP-61 1704

FK5 Catalogue 397

General Catalogue of Variable Stars PP Car

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In Evidence

Other stars in Carina