The AsterNym star registry
Dschubba
Dschubba: the blue star of Scorpius
blue · Scorpius · δ Sco
Dschubba is a blue star in the constellation Scorpius, one of the stars with a proper name recognised in the IAU Catalog of Star Names. At magnitude 2.29 it is visible to the naked eye under a dark sky.
Most stars in the sky are anonymous points of light. Dschubba is not. Some IAU-recognised names are ancient; others were adopted by the IAU only recently. Either way, the star already has a scientific identity, and a dedication attaches a human story to it.
Real star · Personal dedication · Recorded in the AsterNym registry
See what a dedicated page looks like: preview
Dschubba at a glance
- Constellation
- Scorpius
- Other name
- δ Sco
- Catalogue number
- HIP 78401
- Distance
- ≈ 400 light-years
- Brightness
- Magnitude 2.29 naked-eye
- Star type
- B0.3 IV
- Colour
- blue
- Best seen from
- Almost everywhere on Earth
- Right ascension
- 16h 00m 19s
- Declination
- −22° 37′ 18″
J2000 catalogue coordinates that can be independently cross-checked against astronomical databases. A planetarium app showing coordinates of date will differ slightly, because proper motion and precession move a star’s apparent position over time.
What kind of star is Dschubba?
Dschubba is a blue-white subgiant. Its surface runs somewhere between 10,000 and 30,000°C, which is what gives it a blue-white cast. Colour in a star is a temperature reading rather than a decoration: the hot ones are blue and the cool ones red, the opposite way round to a kitchen tap.
It is spending its fuel at a rate the Sun never will. Most of the bright stars in familiar constellations are this kind, which is why the night sky looks younger and hotter than the average star actually is.
A star of this class gets tens of millions of years, against the Sun's ten thousand million.
It is a subgiant, caught in the short crossing between an ordinary life and a giant one. Its core has run out of hydrogen but its outer layers have not finished expanding, and astronomically this stage passes quickly.
The light you are looking at is old
Dschubba is about 400 light years away, so the light reaching you now set out around 1626. You are not looking at the star as it is. You are looking at the star as it was, and there is no way to see it any other way.
That delay is the part people find hardest and like most. A star is the one thing you can give someone that was already old before either of you was born and will outlast anything else you could have chosen.
It is comfortably visible without equipment on a decent night.
What does the name Dschubba mean?
Delta Scorpii bore the traditional name Dschubba, which comes from Arabic جبهة العقرب jabhet al-aqrab meaning 'the forehead of the scorpion'.
Name origin from English Wikipedia. AsterNym does not invent an etymology where none is recorded, and most stars in this catalogue have none: they carry modern names, or a catalogue designation and nothing older.
What could a Dschubba dedication represent?
Dschubba is especially meaningful for someone who:
- · Deserves something older than any gift shop
- · Marks a beginning, an anniversary or a promise
- · Is remembered every time you look up
- · Has a light you want recorded somewhere permanent
Dedication idea
“For the one I think of when I find Scorpius in the sky.”
Where can you see Dschubba?
It sits 23° south of the celestial equator, so it clears the horizon everywhere short of latitude 67°N, in practice, every inhabited latitude on Earth. It passes directly overhead at latitude 23°S. It stands highest at midnight in May, so May and June evenings are the best time to look. At magnitude 2.29 it is an easy naked-eye star from any reasonably dark spot.
Dschubba belongs to Scorpius.
What does Dschubba mean in astrology?
The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Dschubba, and we don’t invent lore where none exists. What astrology can still read is the star’s real position, below.
Projected onto the zodiac the way fixed-star astrology reads any star, Dschubba stands at 2° Sagittarius at the J2000 epoch, and the Sun passes that degree around 21 November in the years around 2000. Fixed-star longitude shifts slowly against the tropical zodiac because of precession, about one degree every seventy-two years, so a natal conjunction must be calculated for the birth year rather than read off this J2000 value or a calendar date.
Traditional interpretations, not facts or predictions. The position and dates are computed.
Dedicate Dschubba to someone who matters
A flower fades. A card is eventually put away. A star gives your message a place in the sky.
from$29.95a year
Dedicate Dschubba →Real star · your message · a page to share
Your Dschubba dedication includes
- Your chosen dedication name
- Your personal message
- Dschubba's real astronomical coordinates
- A shareable dedication page
- Its location on the AsterNym Galaxy Map
- An optional printable certificate and gift presentation
Dschubba keeps its established astronomical name. Your dedication is a personal commemorative record within the AsterNym registry.
Frequently asked questions about Dschubba
- What does Dschubba mean in astrology?
- The classical fixed-star tradition has no documented meaning for Dschubba. Projected onto the zodiac, Dschubba stands at 2° Sagittarius, and the Sun passes that degree each year around 21 November.
- Is Dschubba the brightest star?
- Dschubba shines at magnitude 2.29 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
- How far away is Dschubba?
- Dschubba is approximately 400 light-years from Earth. The light reaching us tonight began its journey around 400 years ago.
- Which constellation contains Dschubba?
- Dschubba is part of Scorpius.
- Can everyone see Dschubba?
- It sits 23° south of the celestial equator, so it clears the horizon everywhere short of latitude 67°N, in practice, every inhabited latitude on Earth. It passes directly overhead at latitude 23°S. It stands highest at midnight in May, so May and June evenings are the best time to look. At magnitude 2.29 it is an easy naked-eye star from any reasonably dark spot.
- Is dedicating Dschubba an official astronomical renaming?
- No. Dschubba keeps its internationally recognised astronomical name. An AsterNym dedication records your personal name and message in the AsterNym registry without changing the star's scientific identity.
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