Combining HIPPARCOS and Gaia data for the study of binaries: The BINARYS tool

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Table 3

Astrometric parameters at HIPPARCOS reference adjusted for Gl 494, GJ 2060, and HIP 88745.

Astrometric parameters	α (deg ± mas)	δ (deg ± mas)	ϖ (mas)	(mas yr⁻¹)	(mas yr⁻¹)
Gl 494	195.1956345 ±1	12.3757745 ±0.9	86.6 ±0.1		−24.80 ±0.04
GJ 2060	112.2144281 ±4	-30.2465342 ±11		−126±1	−182±5
HIP 88745^(A)				−92.5 ±0.6	73.3 ±0.
HIP 88745^(AR)	271.7567501 ±1	30.5619630 ±2	63.54 ±0.08	−91.7 ±0.1	73.20 ±0.05

Notes. The parallax takes into account the zero-point of HIPPARCOS parallaxes. The parameters are estimated with TMB and the errors are estimated thanks to a MCMC. HIP 88745^(A): using only absolute astrometry. HIP 88745^(AR): using absolute and relative astrometry.

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