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Star profile

Mahasim

Theta Aurigae · Auriga

Variable star
3D likeness based on its real data · class A · ~8,500 K

What is Mahasim

Mahasim, white and slightly variable, shines at 165 light-years from the Earth in the constellation of Auriga, the Charioteer. Its Arabic name refers to the wrist of the driver firmly holding the reins, one of those words that survived the translation of Ptolemy's Almagest in twelfth-century Toledo, when the Castilian kings still funded the translators of every available manuscript. Its light fluctuates very faintly, almost like a distant heartbeat, in slow cycles that barely alter what the human eye can perceive from any ordinary courtyard floor.

Where it is and when to see it

Mahasim lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.

Find it on the sky map

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The signature wall

Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.

A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works

If you don't have an account yet, we'll ask for an email to confirm it's you: we send you a link and that's it, no password.

A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.

Astronomical data for Mahasim

Constellation
Auriga
Apparent magnitude
2.65
Distance
165.6 light years
Coordinates (J2000)
RA 89.930° · Dec 37.213°
Catalogue
HIP 28380 · HD 40312

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Auriga

Auriga has 76 stars in Stelvia's catalogue. Here are a few of them.

See all 76 stars in Auriga