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HD 30046


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Mean positions and proper motions of 305 stars obtained from the combination of PZT observations at Ondrejov with AGK positions
Observations of 305 stars carried out at the Ondrejov Observatory in theperiod 1973-1983 were compared to the positions of the same stars in theAGK 2 and AGK 3 catalogs in order to obtain their mean positions andproper motions. The observations were performed in the course of 1140nights using the PZT telescope and comprise more than 32 thousand startransits. The average mean errors in the right ascension and declinationof a star that was observed thoughout the whole period were + or -0.0019 s and + or - 0.019 arcsec in the epoch around 1979. It ispredicted that the errors will increase + or - 0.0055 sec and + or -0.059 arcsec in the year 2000. A table listing the errors in the rightascension and declination is provided.

A photometric study of some early B stars whose spectral lines vary in sharpness.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970AJ.....75..818P&db_key=AST

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观测天体数据

星座:英仙座
右阿森松:04h46m39.61s
赤纬:+50°09'08.6"
视星:8.208
距离:203.252 天文距离
右阿森松适当运动:13
赤纬适当运动:-11.9
B-T magnitude:8.42
V-T magnitude:8.226

目录:
适当名称   (Edit)
HD 1989HD 30046
TYCHO-2 2000TYC 3351-131-1
USNO-A2.0USNO-A2 1350-04882586
HIPHIP 22216

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