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Miaplacidus, painted as a white star

A dedicated star

Miaplacidus

white · Carina · β Car

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, Miaplacidus becomes available again. Want it? Put the date in your calendar.

Miaplacidus at a glance

Constellation
Carina
Other name
β Car
Catalogue number
HIP 45238
Distance
≈ 111 light-years
Brightness
Magnitude 1.69 naked-eye
Star type
A2 IV
Colour
white
Best seen from
The far southern sky
Right ascension
09h 13m 12s
Declination
−69° 43′ 02″

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 Miaplacidus?

Miaplacidus is a white subgiant. Its surface runs around 7,500 to 10,000°C, hot enough to look white or blue-white to the eye. 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.

These are the classic bright white stars. Sirius and Vega are both this kind, and they are the reason people describe stars as white when most of the galaxy's stars are actually red and too faint to see.

A star of this class gets roughly a thousand million years, a tenth of what the Sun gets.

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

The light you can see from Miaplacidus left in 1915, 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 also one of the brighter stars in the sky, which is why it carries a proper name at all rather than a catalogue number.

What does the name Miaplacidus mean?

The meaning and linguistic origin of the name is uncertain; placidus is from Latin for 'placid', while William Higgins, a 19th-century scholar on star names, surmised that the first part of the name is from Arabic مياه miyāh for 'waters'.

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 Miaplacidus?

It is a deep-southern star: easy from Australia, New Zealand, southern Africa and South America, but it never rises for observers north of about latitude 20°N. It passes directly overhead at latitude 70°S. It stands highest at midnight in February, so February and March evenings are the best time to look. At magnitude 1.69 it is an easy naked-eye star from any reasonably dark spot.

Miaplacidus belongs to Carina.

What does Miaplacidus mean in astrology?

The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Miaplacidus, 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, Miaplacidus stands at 1° Scorpio at the J2000 epoch, and the Sun passes that degree around 21 October 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 Miaplacidus

What does Miaplacidus mean in astrology?
The classical fixed-star tradition has no documented meaning for Miaplacidus. Projected onto the zodiac, Miaplacidus stands at 1° Scorpio, and the Sun passes that degree each year around 21 October.
Is Miaplacidus the brightest star?
Miaplacidus shines at magnitude 1.69 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
How far away is Miaplacidus?
Miaplacidus is approximately 111 light-years from Earth. The light reaching us tonight began its journey around 111 years ago.
Which constellation contains Miaplacidus?
Miaplacidus is part of Carina.
Can everyone see Miaplacidus?
It is a deep-southern star: easy from Australia, New Zealand, southern Africa and South America, but it never rises for observers north of about latitude 20°N. It passes directly overhead at latitude 70°S. It stands highest at midnight in February, so February and March evenings are the best time to look. At magnitude 1.69 it is an easy naked-eye star from any reasonably dark spot.
Is dedicating Miaplacidus an official astronomical renaming?
No. Miaplacidus 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 Carina, its stars sized by brightness and coloured by spectral type
Carina, 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.