HYG 118732 The Sun

Surface temperature: 3,730 K
Radius: 0.16 × the Sun
Luminosity: 0.005 × the Sun
Spectral type: M3

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

HYG 118732

A real star from the HYG catalog in the constellation Ursa Major.

55.3 light-years away Apparent magnitude 11.82

M-type: red dwarf

Its spectral type is M3: the galaxy's most common stars: small, cool, dim, flare-prone, and able to burn for trillions of years. From its measured color, its surface temperature is roughly 3,734 K (3,461 °C), an estimate computed from the catalog's color index.

How far away is it?

It lies 55.3 light-years away (16.95 parsecs, from its measured parallax), within the Sun's wider neighborhood; its light is only 55.3 years old when it reaches your eye.

How powerful is it?

Its computed luminosity is only 0.00468 of the Sun's output, a modest lamp by stellar standards (derived from its brightness and distance).

Can you see it?

At apparent magnitude 11.82, it is a telescope target only. It favors northern observers.

Not alone

The catalog records this star as a member of a multiple-star system: two or more suns bound in orbit around each other, a configuration roughly half of Sun-like stars share.

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.

Companions in this system

hip-54658 magnitude 10.92

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.