HIP 100069 The Sun

Surface temperature: 9,300 K
Radius: 15 × the Sun
Luminosity: 1,436 × the Sun
Spectral type: O9V

Diagram, not a photograph. Colour from the star’s measured colour index; size from its luminosity and temperature, drawn to one scale with the Sun. Source: HYG stellar database.

Cataloged star · Database record + computed analysis

HIP 100069

HIP 100069 · HD 193322

A real star from the HYG catalog in the constellation Cygnus.

1,941.4 light-years away Apparent magnitude 5.83

O-type: blue scorcher

Its spectral type is O9V: among the hottest, rarest, shortest-lived stars: surfaces above 30,000 °C, lifetimes of mere millions of years, destined for supernovae. From its measured color, its surface temperature is roughly 9,297 K (9,024 °C), an estimate computed from the catalog's color index.

How far away is it?

It lies about 1,941 light-years away (595.2 parsecs, from its measured parallax). The light reaching Earth tonight left it around the year 84.

How powerful is it?

Its computed luminosity is 1,436 times the Sun's output, a genuine searchlight (derived from its brightness and distance).

Can you see it?

At apparent magnitude 5.83, it is a naked-eye star under dark skies, washed out by city lights. It favors northern observers.

Everything above is computed from the catalog’s measured values for this star. Where a value is missing, the statement is omitted rather than guessed.

About this record

Data: the HYG stellar database v4.1 (Hipparcos + Yale + Gliese, CC BY-SA, © David Nash / astronexus). Want the full stories? Our deep star guides cover Sirius, Betelgeuse, Proxima Centauri, Vega and three dozen more. You can also browse the catalog or learn how stars live and die.