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Gaia Data Release 2
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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.

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