<b>Field 38, 1st digit</b>: Quality of radial velocity

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Field 38, 1st digit: Quality of radial velocity

The `quality' given in this field is derived from information in the GCRV (Wilson 1953) and the catalogue of Evans (1978), according to which the estimated mean probable errors are `based upon three factors: the number of observations, the dispersion of the spectrograph used, and the interagreement of separate determinations'. The radial velocities are characterised by five such values: [][ a:] 0.5 km/s [ b:] 1.2 km/s [ c:] 2.5 km/s [ d:] 5 km/s [ e:] not given

The Meudon Hipparcos Input Catalogue Team
mer 16 nov 15:51:31 MET 1994