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🌎  Greenwich, United Kingdom [change]

HR4019

HR4019 is a double giant star in the constellation of Antlia.

HR4019 visual magnitude is 6.35. Because of its reltive faintness, HR4019 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 HR4019:

6.35
Giant
HR4019 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4019

HR4019 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 HR4019 are provided in the following table:

10h 13m 56s
-40° 18’ 38”
273.13°
13.28°
Antlia

The simplified sky map below shows the position of HR4019 in the sky:

Finder chart HR4019 star
Simplified finder chart for HR4019.

Visibility of HR4019 from your location

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

HR4019 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4019

The image below is a photograph of HR4019 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 HR4019 is -0.026 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4019 star
DSS2 image of HR4019. The red arrow shows the motion of HR4019 during the next 10000 years (-4.33 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR4019 from the Sun and relative movement

HR4019 is distant 448.42 light years from the Sun

137.55 pc
448.42 ly
-0.026 arcsec/year
-0.002 arcsec/year

Spectral properties of HR4019

HR4019 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

0.66
G8III
4892K

The red dot in the diagram below shows where HR4019 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4019. Attribution: Richard Powell / CC BY-SA

HR4019 star system properties

HR4019 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 HR4019 double sysyem:

6.35
13.35
7
12.7 arcsec

Alternative designations of HR4019

SAO221883
SAO221883