Dschubba - δ Scorpii (delta Scorpii)

Altitude: -13.5° Azimuth: 250.6° Direction: West-South-West

Dschubba, also designated as δ Scorpii (delta Scorpii), is a multiple hypergiant star in the constellation of Scorpius.

Dschubba visual magnitude is 2.32, making it the 79th brightest star in the sky. Thanks to its high brightness, Dschubba is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.

The table below summarizes the key facts about Dschubba:

Color of Dschubba ⬤

Magnitude of Dschubba 2.32

Class Hypergiant

VISIBILITY RIGHT NOW

Dschubba - δ Scorpii (delta Scorpii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -13.5°
Azimuth: 250.6°
Direction: West-South-West

Celestial coordinates and finder chart of Dschubba

Dschubba is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Dschubba are provided in the following table:

Right Ascension J2000 16h 00m 20s

Declination J2000 -22° 37’ 18”

Galactic Longitude 350.1°

Galactic Latitude 22.49°

Constellation Scorpius

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

Finder chart Dschubba - δ Scorpii (delta Scorpii) star

Simplified finder chart for Dschubba - δ Scorpii (delta Scorpii).

Visibility of Dschubba from your location

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

Today's Dschubba - δ Scorpii (delta Scorpii) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.6° RISE 7:04

Max altitude: 15.9° TRANSIT 10:56

Azimuth: 247.4° SET 14:48

Digitized Sky Survey image of Dschubba

The image below is a photograph of Dschubba 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 Dschubba is -0.012 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Dschubba - δ Scorpii (delta Scorpii) star

DSS2 image of Dschubba. The red arrow shows the motion of Dschubba during the next 10000 years (-2.00 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of Dschubba from the Sun and relative movement

Dschubba is distant 401.48 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 123.15 pc

Distance (light year) 401.48 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA -0.012 arcsec/year

Proper Motion Dec -0.022 arcsec/year

Spectral properties of Dschubba

Dschubba belongs to spectral class B0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude -3.13

Spectral Type B0IV

Color Index (B-V) -0.12

Temperature of Dschubba 11920K

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

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

Dschubba star system properties

Dschubba 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 Dschubba double sysyem:

Main star magnitude 2.32

Secondary star magnitude 2.52

Magnitude difference 0.2

Separation 0.2 arcsec

Alternative designations of Dschubba

Proper Name Dschubba

Bayer designation δ Scorpii
(delta Scorpii)

Flamsteed designation 7 Scorpii

Henry Draper Catalogue HD143275

SAO Catalogue SAO184014

Hipparcos Catalogue HIP78401

Durchmusterung Catalogue BD-22 4068

FK5 Catalogue 594

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