Alula Australis B
Alula Australis B is a yellow star, much like the Sun in temperature, in the constellation Ursa Major. It is in the long, steady part of its life, making helium from hydrogen in its core, as the Sun is.
How far
34 light years
The light you see from Alula Australis B tonight set off about 34 years ago. Everything we know about it is that much out of date.
How bright
About one Sun
It gives out about as much visible light as the Sun. It can be seen by eye away from bright lights.
Astronomers put its brightness in our sky at magnitude 4.80. Smaller numbers are brighter, and the faintest stars the eye can see are about 6.
How hot
Not known here. The catalogue this site uses has no colour measurement for this star, and colour is what the temperature is worked out from. Its spectral type says it is a yellow star, much like the Sun in temperature.
In your sky now
Working it out…
Its names
- Its own name
- Alula Australis B
- By constellation (Bayer)
- Xi Ursae Majoris
- Henry Draper catalogue
- HD 98230
- Spectral type
- G0 Ve
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 words are written for this site.
To read more: Colour and brightness, How stars live and die, Measuring distance.