Table 2.

Entries from Hipparcos and Hipparcos-2 which are of interest, adapted from [32,34].

Symbol	Catalogue	Label	Description	Unit
-	Hipparcos	HIP	Identifier (HIP number)	-
-	Hipparcos	Vmag	Magnitude in Johnson V	mag
-	Hipparcos-2	HIP	Hipparcos identifier	-
$\alpha$	Hipparcos-2	RArad	Right Ascension, ICRS, 1991.25	rad
$\delta$	Hipparcos-2	DErad	Declination, ICRS, 1991.25	rad
${\mu }_{\alpha }*$	Hipparcos-2	pmRA	Proper motion in Right Ascension	mas/year
${\mu }_{\delta }$	Hipparcos-2	pmDE	Proper motion in Declination	mas/year