Ross 154 is a red dwarf in Sagittarius, one of the closest stars to the Sun in that direction and a flare star, too faint for the naked eye.
At a glance
| type | red dwarf (class M) |
|---|---|
| distance from the Sun | 9.72 light-years (2.98 pc) |
| its light left it | 9.72 years ago |
| luminosity | 0.0038 × the Sun |
| radius | 0.24 × the Sun |
| surface temperature | 3,340 K |
Read off the piece’s own catalogue, the same values it draws with.
About Ross 154
Ross 154 is a red dwarf, smaller and much dimmer than the Sun, catalogued by Frank Ross among stars that showed large motions across the sky. It lies in Sagittarius, in front of the dense star fields towards the centre of the Galaxy, and is one of the nearest stars in that part of the sky.
It is a flare star, magnetically active, prone to sudden brightenings and giving off X-rays. Like every red dwarf, it will go on shining for far longer than the Sun, slowly and dimly, long after the Sun has become a white dwarf. No planets have been confirmed around it.
What you see in the piece
Fly to it and the disc is a dull orange-red. From Earth it is lost among the far brighter and far more distant stars of the Milky Way behind it.
Questions
How far away is Ross 154?
Ross 154 is 9.72 light-years (2.98 pc) from the Sun.