Table 1
Ten HIPPARCOS sources in Gaia DR2 with the largest predicted perspective acceleration.
| Designation | HIP | vr | Δ | Name |
|---|---|---|---|---|
| [km s−1] | [mas] | |||
| Gaia DR2 4472832130942575872 | 87937 | − 110.51 | 1.975 | Barnard’s star |
| Gaia DR2 4810594479417465600 | 24186 | 245.19 | 1.694 | Kapteyn’s star |
| Gaia DR2 2552928187080872832 | 3829 | 263.00 | 0.573 | Van Maanen 2 |
| Gaia DR2 1872046574983507456 | 104214 | − 65.74 | 0.313 | 61 Cyg A |
| Gaia DR2 1872046574983497216 | 104217 | − 64.07 | 0.297 | 61 Cyg B |
| Gaia DR2 4034171629042489088 | 57939 | − 98.35 | 0.239 | Groombridge 1830 |
| Gaia DR2 5853498713160606720 | 70890 | − 22.40 | 0.208 | α Cen C (Proxima) |
| Gaia DR2 6412595290592307840 | 108870 | − 40.00 | 0.163 | ϵ Ind |
| Gaia DR2 3340477717172813568 | 26857 | 105.83 | 0.144 | Ross 47 |
| Gaia DR2 4847957293277762560 | 15510 | 87.40 | 0.141 | e Eri |
Notes. The table gives the assumed radial velocity, vr (taken from SIMBAD, Wenger et al. 2000), for 10 of the 53 HIPPARCOS sources where the perspective acceleration was taken into account in the astrometric solutions. Δ is the predicted size of the effect calculated as described in the text. The complete table of the 53 sources is given in the Gaia DR2 online documentation.