Gaia was designed to measure the positions, distances and motions of stars and aims to construct the largest and most precise 3D space catalog ever made: 1 billion astronomical objects.
The main results of the Ten Parsec Survey are in this extract from the paper:
This tells us a few interesting facts about our local neighbourhood:
There are 540 objects, of which 422 are known to be stars. The rest have no spectral classification or are known exoplanets.
- There are no Class O or B stars.
- Only 12 (3%) are listed in a higher class than the Sun (Class A&F).
- Just 18 (4%) are in the same class as the Sun (Class G).
- The Sun is one of the dominant 7% of stars in the region.
- 287 (68%) of stars are in a lower class than the Sun (Class K&M). A whopping 249 of them (59%) are Class M stars, presumably all or most of them being red dwarfs.
- There are also 85 (20%) brown dwarfs (Class L,T&Y), 20 (5%) white dwarfs (Class D) and 41 (10%) with no spectral classification.
- No neutron stars are listed.
There are 339 star systems, with 422 stars.
- 246 are single star systems.
- 27% of the systems are multiple star systems, with 217 stars, so only 49% of the stars are single star systems.