The AsterNym star registry
Tusizuo
Tusizuo: the warm orange star of Hercules
warm orange · Hercules · 109 Her
Tusizuo is a warm orange giant, far along its stellar life in the constellation Hercules, one of the stars with a proper name recognised in the IAU Catalog of Star Names. At magnitude 3.84 it is visible to the naked eye under a dark sky.
Most stars in the sky are anonymous points of light. Tusizuo 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
Tusizuo at a glance
- Constellation
- Hercules
- Other name
- 109 Her
- Catalogue number
- HIP 90139
- Distance
- ≈ 119 light-years
- Brightness
- Magnitude 3.84 naked-eye
- Star type
- K2III
- Colour
- warm orange
- Best seen from
- Almost everywhere on Earth
- Right ascension
- 18h 23m 42s
- Declination
- +21° 46′ 11″
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 Tusizuo?
Tusizuo is an orange giant. Its surface runs roughly 4,000 to 5,000°C, cool enough that the light carries a visible orange. 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.
Its colour is not the whole story. An orange star still in the steady part of its life would burn for tens of thousands of millions of years. This one is past that stage, and it is cool at the surface because it has swollen outward, not because it was born this way.
It is a giant, which is what a star becomes when it exhausts the hydrogen in its core. It has swollen outward and cooled at the surface, and it is now brighter than it ever was as a young star. The Sun will do this too, in about five thousand million years.
Tusizuo moves noticeably against the background sky, about 31 arcseconds a century. The constellation it belongs to will not have quite this shape in ten thousand years.
The light you are looking at is old
The light you can see from Tusizuo left in 1907, which puts it roughly a lifetime ago. Nobody has invented anything since then that the light knows about; it has simply been travelling.
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 could a Tusizuo dedication represent?
Tusizuo 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 Hercules in the sky.”
Where can you see Tusizuo?
It sits 22° north of the celestial equator, so it clears the horizon everywhere short of latitude 68°S, in practice, every inhabited latitude on Earth. It passes directly overhead at latitude 22°N. It stands highest at midnight in June, so June and July evenings are the best time to look. At magnitude 3.84 it is a naked-eye star only under a dark sky, binoculars make it certain.
Tusizuo belongs to Hercules.
What does Tusizuo mean in astrology?
The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Tusizuo, 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, Tusizuo stands at 7° Capricorn at the J2000 epoch, and the Sun passes that degree around 27 December 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 Tusizuo 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 Tusizuo →Real star · your message · a page to share
Your Tusizuo dedication includes
- Your chosen dedication name
- Your personal message
- Tusizuo's real astronomical coordinates
- A shareable dedication page
- Its location on the AsterNym Galaxy Map
- An optional printable certificate and gift presentation
Tusizuo keeps its established astronomical name. Your dedication is a personal commemorative record within the AsterNym registry.
Frequently asked questions about Tusizuo
- What does Tusizuo mean in astrology?
- The classical fixed-star tradition has no documented meaning for Tusizuo. Projected onto the zodiac, Tusizuo stands at 7° Capricorn, and the Sun passes that degree each year around 27 December.
- Is Tusizuo the brightest star?
- Tusizuo shines at magnitude 3.84 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
- How far away is Tusizuo?
- Tusizuo is approximately 119 light-years from Earth. The light reaching us tonight began its journey around 119 years ago.
- Which constellation contains Tusizuo?
- Tusizuo is part of Hercules.
- Can everyone see Tusizuo?
- It sits 22° north of the celestial equator, so it clears the horizon everywhere short of latitude 68°S, in practice, every inhabited latitude on Earth. It passes directly overhead at latitude 22°N. It stands highest at midnight in June, so June and July evenings are the best time to look. At magnitude 3.84 it is a naked-eye star only under a dark sky, binoculars make it certain.
- Is dedicating Tusizuo an official astronomical renaming?
- No. Tusizuo 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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