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HD 125113


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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.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Coban
Sað Açýklýk:14h16m33.93s
Yükselim:+32°12'30.4"
Görünürdeki Parlaklýk:6.73
Uzaklýk:139.47 parsek
özdevim Sað Açýklýk:18.7
özdevim Yükselim:6.4
B-T magnitude:7.914
V-T magnitude:6.828

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 125113
TYCHO-2 2000TYC 2546-608-1
USNO-A2.0USNO-A2 1200-07262660
HIPHIP 69753

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