Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]

HR4002

HR4002 is a multiple hypergiant star in the constellation of Carina.

HR4002 visual magnitude is 5.81. Because of its reltive faintness, HR4002 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 HR4002:

5.81
Hypergiant
HR4002 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4002

HR4002 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 HR4002 are provided in the following table:

10h 09m 30s
-68° 40’ 59”
289.05°
-10.29°
Carina

The simplified sky map below shows the position of HR4002 in the sky:

Finder chart HR4002 star
Simplified finder chart for HR4002.

Visibility of HR4002 from your location

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

HR4002 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4002

The image below is a photograph of HR4002 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 HR4002 is -0.008 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.

Image of HR4002 star
DSS2 image of HR4002. The red arrow shows the motion of HR4002 during the next 10000 years (-1.33 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR4002 from the Sun and relative movement

HR4002 is distant 583.18 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

178.89 pc
583.18 ly
10 km/s
-0.008 arcsec/year
0.01 arcsec/year

Spectral properties of HR4002

HR4002 belongs to spectral class A0 and has a luminosity class of IV corresponding to a hypergiant star.

-0.45
A0IV
9882K

The red dot in the diagram below shows where HR4002 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4002. Attribution: Richard Powell / CC BY-SA

HR4002 star system properties

HR4002 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4002 double sysyem:

5.81
5.91
0.1
0.8 arcsec

Alternative designations of HR4002

SAO250844
SAO250844