39 Ser The Sun

Surface temperature: 5,980 K
Radius: 0.92 × the Sun
Luminosity: 0.978 × the Sun
Spectral type: G0IV

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

39 Ser

HIP 77801 · HD 142267

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

56.6 light-years away Apparent magnitude 6.07

G-type: a sun like ours

Its spectral type is G0IV: the Sun's own class: roughly 5,000–6,000 °C surfaces and ~10-billion-year lifetimes. From its measured color, its surface temperature is roughly 5,975 K (5,702 °C), an estimate computed from the catalog's color index.

How far away is it?

It lies 56.6 light-years away (17.35 parsecs, from its measured parallax), within the Sun's wider neighborhood; its light is only 56.6 years old when it reaches your eye.

How powerful is it?

Its computed luminosity is about 0.98 of the Sun's output, a near-solar wattage (derived from its brightness and distance).

Can you see it?

At apparent magnitude 6.07, it is a naked-eye star under dark skies, washed out by city lights. It is visible from both hemispheres.

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.