Preview. This is a sample dedication, shown so you can see what a dedicated star page looks like.

Mahasim, painted as a white star

A dedicated star

Mahasim

white · Auriga · θ Aur

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

Mahasim at a glance

Constellation
Auriga
Other name
θ Aur
Catalogue number
HIP 28380
Distance
≈ 166 light-years
Brightness
Magnitude 2.65 naked-eye
Star type
A0p Si
Colour
white
Best seen from
The Northern Hemisphere and lower southern latitudes
Right ascension
05h 59m 43s
Declination
+37° 12′ 45″

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 Mahasim?

Mahasim is a white star. 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.

Mahasim drifts about 8.5 arcseconds a century against the stars behind it. Slow by any human measure, and still enough that the sky your distant descendants see will not be the one in your photographs.

The light you are looking at is old

The light arriving from Mahasim tonight left in about 1860, some 166 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 Mahasim mean?

Some authors state that Theta Aurigae had no traditional name,although Richard Hinckley Allen makes a passing reference about the name Mahasim, as a name also used, with various spellings, for Eta Aurigae and Lambda Herculis, from the Arabic المِعْصَم al-miʽşam "the wrist" (of the charioteer).

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 Mahasim?

It is easy to see from most of the Northern Hemisphere. It can also appear from lower southern latitudes, but it never rises for observers south of about latitude 53°S. It passes directly overhead at latitude 37°N. It stands highest at midnight in December, so December and January evenings are the best time to look. At magnitude 2.65 it is an easy naked-eye star from any reasonably dark spot.

Mahasim belongs to Auriga.

What does Mahasim mean in astrology?

The classical fixed-star tradition: Ptolemy, the medieval Behenian lists, Robson’s 1923 compilation. Is silent on Mahasim, 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, Mahasim stands at 29° Gemini at the J2000 epoch, and the Sun passes that degree around 19 June 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 Mahasim

What does Mahasim mean in astrology?
The classical fixed-star tradition has no documented meaning for Mahasim. Projected onto the zodiac, Mahasim stands at 29° Gemini, and the Sun passes that degree each year around 19 June.
Is Mahasim the brightest star?
Mahasim shines at magnitude 2.65 · visible to the naked eye on a clear night, one of the few thousand stars with an officially recognised name.
How far away is Mahasim?
Mahasim is approximately 166 light-years from Earth. The light reaching us tonight began its journey around 166 years ago.
Which constellation contains Mahasim?
Mahasim is part of Auriga.
Can everyone see Mahasim?
It is easy to see from most of the Northern Hemisphere. It can also appear from lower southern latitudes, but it never rises for observers south of about latitude 53°S. It passes directly overhead at latitude 37°N. It stands highest at midnight in December, so December and January evenings are the best time to look. At magnitude 2.65 it is an easy naked-eye star from any reasonably dark spot.
Is dedicating Mahasim an official astronomical renaming?
No. Mahasim 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 Auriga, its stars sized by brightness and coloured by spectral type
Auriga, 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.