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Nunki, painted as a blue star

A dedicated star

Nunki

blue · Sagittarius · σ Sgr

Dedicated to

Maya

by Her sister, June · August 12, 2026

“You were born on the brightest night of my life. Whenever you feel small, remember: there is a star that has carried your name since before you could read it, and it is still up there, still burning, still yours.”
AsterNym registry seal

This dedication

Dedicated to
Maya
Dedicated by
Her sister, June
Recorded
August 12, 2026
Held until
August 12, 2027

When this dedication ends, Nunki becomes available again. Want it? Put the date in your calendar.

Nunki at a glance

Constellation
Sagittarius
Other name
σ Sgr
Catalogue number
HIP 92855
Distance
≈ 228 light-years
Brightness
Magnitude 2.05 naked-eye
Star type
B2.5 V
Colour
blue
Best seen from
The Southern Hemisphere and lower northern latitudes
Right ascension
18h 55m 16s
Declination
−26° 17′ 48″

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 Nunki?

Nunki is a blue-white main-sequence star. 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 main-sequence star, which despite the word dwarf simply means it is in the long stable middle of its life, fusing hydrogen in its core exactly as the Sun is doing now.

The light you are looking at is old

The light arriving from Nunki tonight left in about 1798, some 228 years ago. Everything that has happened since, every person you have heard of from the last few centuries, happened while it was in transit.

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 Nunki mean?

It bore the traditional name of Nunki, which was an Assyrian or Babylonian name recovered by archaeologists and popularized by R.

In the catalogue of stars in the Calendarium of Al Achsasi al Mouakket, this star was designated Thanih al Sadirah, which was translated into Latin as Secunda τού al Sadirah, meaning second returning ostrich.

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.

Where can you see Nunki?

It is easy to see from much of the Southern Hemisphere. It can also appear from lower northern latitudes, but it never rises for observers north of about latitude 64°N. It passes directly overhead at latitude 26°S. It stands highest at midnight in July, so July and August evenings are the best time to look. At magnitude 2.05 it is an easy naked-eye star from any reasonably dark spot.

Nunki belongs to Sagittarius.

What does Nunki mean in astrology?

The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Nunki, 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, Nunki stands at 12° Capricorn at the J2000 epoch, and the Sun passes that degree around 1 January 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.

Frequently asked questions about Nunki

What does Nunki mean in astrology?
The classical fixed-star tradition has no documented meaning for Nunki. Projected onto the zodiac, Nunki stands at 12° Capricorn, and the Sun passes that degree each year around 1 January.
Is Nunki the brightest star?
Nunki shines at magnitude 2.05 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
How far away is Nunki?
Nunki is approximately 228 light-years from Earth. The light reaching us tonight began its journey around 228 years ago.
Which constellation contains Nunki?
Nunki is part of Sagittarius.
Can everyone see Nunki?
It is easy to see from much of the Southern Hemisphere. It can also appear from lower northern latitudes, but it never rises for observers north of about latitude 64°N. It passes directly overhead at latitude 26°S. It stands highest at midnight in July, so July and August evenings are the best time to look. At magnitude 2.05 it is an easy naked-eye star from any reasonably dark spot.
Is dedicating Nunki an official astronomical renaming?
No. Nunki 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.

Explore nearby stars

The constellation Sagittarius, its stars sized by brightness and coloured by spectral type
Sagittarius, drawn from catalogued positions: brighter stars are larger, and the colours follow spectral type. North is up and east is left, the sky-chart convention, so it is mirrored against a map of the ground. The joining lines are one drawing convention among several; the IAU fixes the boundaries, not the figure.
AsterNym dedications are personal commemorative records: they are not recognized by the International Astronomical Union, do not change scientific catalogue names, and do not confer ownership of a star.