Meet a star / Antlia

Macondo

Macondo is an orange star, cooler than the Sun, in the constellation Antlia. It is in the long, steady part of its life, making helium from hydrogen in its core, as the Sun is.

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

How far

91 light years

The light you see from Macondo tonight set off about 91 years ago. Everything we know about it is that much out of date.

How bright

0.32 of a Sun

It gives out 32 per cent of the Sun's visible light. It is too faint to see without a telescope.

Astronomers put its brightness in our sky at magnitude 8.30. Smaller numbers are brighter, and the faintest stars the eye can see are about 6.

How hot

About 4,900 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.

MacondoThe Sun

Its names

Its own name
Macondo
Hipparcos catalogue
HIP 52521
Henry Draper catalogue
HD 93083
Spectral type
K3V

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.