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Star profile

1 Scorpii

Hot blue star
3D likeness based on its real data · class B · ~15,000 K

What is 1 Scorpii

1 Scorpii is a blue type-B star burning around 495 light-years away, perched at the very threshold of the Scorpion near the border with Libra. Its incandescent surface easily exceeds twenty thousand degrees, a temperature that turns it into a quiet beacon among the bright luminaries of the stinger. Its light took nearly five centuries to arrive; when it left, Galileo had not yet aimed his spyglass at the sky.

Where it is and when to see it

1 Scorpii lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is May: 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

It opens in your browser. Free, no account, nothing to install.

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 1 Scorpii

Constellation
Scorpius
Apparent magnitude
4.63
Distance
495.0 light years
Coordinates (J2000)
RA 237.745° · Dec -25.751°
Catalogue
HIP 77635 · HD 141637

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

Other stars in Scorpius

Scorpius has 104 stars in Stelvia's catalogue. Here are a few of them.

See all 104 stars in Scorpius