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HD 124401


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Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
MK spectral types are given for about 584 stars in A Supplement to theBright Star Catalogue. These are compared with Hipparcos parallaxes tocheck the reliability of those classifications. The estimated errors are+/-1.2 subtypes, and 10% of the luminosity classes may be wrong.

First radial velocities for 146 bright F- and G-type stars
We have obtained an average of 5.7 radial velocities for 146 northernstars of types F and G (all luminosity classes) listed in 'A Supplementto the Bright Star Catalogue' as having no previously known radialvelocity measures. Those were obtained with charge coupled devices(CCDs) and a cross-correlation technique; the intrinsic velocityaccuracy, based on stars of apparently constant velocity, is probablyless than +/- 0.3 km/s per mean. Of those stars 14% are newly discoveredSB2 stars. The prevelance of rapid profile variations (in minutes orhours) in most of the broad-lined F-type stars makes it difficult toobtain accurate measures for them.

Fifty standard stars for yellow and blue magnitudes in the UBV system
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Observation and Astrometry data

Constellation:Virgo
Right ascension:14h13m42.99s
Declination:-11°50'18.2"
Apparent magnitude:6.988
Distance:174.52 parsecs
Proper motion RA:13.7
Proper motion Dec:-15.5
B-T magnitude:8.275
V-T magnitude:7.095

Catalogs and designations:
Proper Names
HD 1989HD 124401
TYCHO-2 2000TYC 5558-1416-1
USNO-A2.0USNO-A2 0750-08397604
HIPHIP 69500

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