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HD 33345


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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.

MK classifications for F-and G-type stars. 3.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974AJ.....79..682H&db_key=AST

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观测天体数据

星座:獵戶座
右阿森松:05h09m29.75s
赤纬:-02°08'06.1"
视星:6.577
距离:135.685 天文距离
右阿森松适当运动:7.6
赤纬适当运动:9.4
B-T magnitude:7.865
V-T magnitude:6.684

目录:
适当名称   (Edit)
HD 1989HD 33345
TYCHO-2 2000TYC 4755-1515-1
USNO-A2.0USNO-A2 0825-01341282
HIPHIP 23995

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