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HD 67720


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Ýlgili Makaleler

TASS Mark III Photometric Survey of the Celestial Equator
The Amateur Sky Survey (TASS) is a loose confederation of amateur andprofessional astronomers. We describe the design and construction of ourMark III system, a set of wide-field drift-scan CCD cameras whichmonitor the celestial equator down to 13th magnitude in severalpassbands. We explain the methods by which images are gathered,processed, and reduced into lists of stellar positions and magnitudes.Over the period 1996 October to 1998 November, we compiled a largedatabase of photometric measurements. One of our results is the tenxcatcatalog, which contains measurements on the standard Johnson-Cousinssystem for 367,241 stars; it contains links to the light curves of thesestars as well.

UvbyHbeta_ photometry of main sequence A type stars.
We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Tekboynuz
Sað Açýklýk:08h09m18.29s
Yükselim:-00°26'57.4"
Görünürdeki Parlaklýk:7.505
Uzaklýk:367.647 parsek
özdevim Sað Açýklýk:-6
özdevim Yükselim:-7.8
B-T magnitude:7.51
V-T magnitude:7.506

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 67720
TYCHO-2 2000TYC 4847-2266-1
USNO-A2.0USNO-A2 0825-06032120
HIPHIP 39931

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