Meet a star / Leo

Dingolay

Dingolay is an orange star, cooler than the Sun, in the constellation Leo.

A drawing in the star's own colour, worked out from its measured colour index. It is not a photograph.

How far

520 light years

The light you see from Dingolay tonight set off about 520 years ago. Everything we know about it is that much out of date.

Distances this great are hard to measure, and this one could be out by a fifth or more.

How bright

11 Suns

It gives out 11 times as much visible light as the Sun. It is too faint to see without a telescope.

Astronomers put its brightness in our sky at magnitude 8.21. Smaller numbers are brighter, and the faintest stars the eye can see are about 6.

How hot

About 5,100 K

That is the temperature of its surface, worked out from its colour, so it is a guide and not a measurement. It could be out by a few hundred degrees. The Sun's is 5,772 K. Hotter stars are bluer and cooler stars are redder, the same way a poker in a fire goes from red to white.

DingolayThe Sun

Its names

Its own name
Dingolay
Hipparcos catalogue
HIP 54158
Henry Draper catalogue
HD 96063
Spectral type
K0

Where this comes from

Distance, brightness, colour and spectral type are from the HYG star database, version 4.4, by David Nash, shared under a Creative Commons Attribution-ShareAlike 4.0 licence. Its distances are those measured by the Hipparcos satellite. The temperature is worked out here from the colour with the formula of Ballesteros (2012), and the words are written for this site.

To read more: Colour and brightness, How stars live and die, Measuring distance.