Your guide to the Solar System and the night sky
Latest Perseverance Images received 5 hours 4 mins ago for Sol280, Sol279
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

HR4049

HR4049 is a variable hypergiant star in the constellation of Antlia.

HR4049 visual magnitude is 5.34. Because of its reltive faintness, HR4049 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 HR4049:

5.34
Hypergiant
HR4049 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4049

HR4049 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 HR4049 are provided in the following table:

10h 18m 07s
-28° 59’ 30”
266.85°
22.93°
Antlia

The simplified sky map below shows the position of HR4049 in the sky:

Finder chart HR4049 star
Simplified finder chart for HR4049.

Visibility of HR4049 from your location

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

Today's HR4049 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 119.0°
Max altitude: 9.5°
Azimuth: 241.0°
HR4049 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4049

The image below is a photograph of HR4049 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 HR4049 is -0.01 arcsec per year in Right Ascension and 0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4049 star
DSS2 image of HR4049. The red arrow shows the motion of HR4049 during the next 10000 years (-1.67 arcmin in Right Ascension and 2.00 arcmin in declination);

Distance of HR4049 from the Sun and relative movement

HR4049 is distant 2,173.33 light years from the Sun and it is moving towards the Sun at the speed of 33 kilometers per second.

666.67 pc
2,173.33 ly
-33 km/s
-0.01 arcsec/year
0.012 arcsec/year

Spectral properties of HR4049

HR4049 belongs to spectral class A0 and has a luminosity class of I corresponding to a hypergiant star.

-3.78
A0I
7866K

The red dot in the diagram below shows where HR4049 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4049. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4049

SAO178644
SAO178644