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HD 24576

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New aperture photometry for 217 galaxies in the Virgo and Fornax clusters. We present photo electric multi-aperture photometry in UBVRI of 171 and46 galaxies in the Virgo and Fornax clusters, respectively. Many of thegalaxies have not been observed in at least one of these passbandsbefore. We discuss the reduction and transformation into the Cousinsphotometric system as well as the extinction coefficients obtainedbetween 1990 and 1993.
UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue. Not Available
Photometric reductions and the lightcurve of (51) NEMAUSA The light curve of the minor planet (51) Nemausa is derived on the basisof 1779 photoelectric (B and V) observations and a photometric reductionusing a rigorous least squares method. Separate light curves are givenfor the B and V observations, respectively. An absolute B-V magnitudefor (51) Nemusa of 0.787 + or - 0.004 mag was estimated. A detaileddescription of the least squares method is presented.
UBV photometry of short period cepheids 613 UBV observations of 15 pulsating variables collected on the 1 mreflector at ESO, La Silla, Chile are reported. The variables observedhave periods between one and three days.
UBV photometry of E region standard stars of intermediate brightness Photometry data are given for 335 stars in the nine E regions.Observations were made using a photometer and filters on the 47 cmreflector at Cape Town. The stellar dispersions are summarized. Data arepresented in tabular form.
Up-To UBVRI Values for the E-Region Standard Stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1981A&AS...46....7V&db_key=AST
Photometric standard stars for the UBV and (RI)KC systems. Not Available
Fainter Standards for VRI Photometry in the E Regions Not Available
UBV photometry for star clusters in the Small Magellanic Cloud. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...34..431A&db_key=AST
Standard magnitudes in the E regions. Not Available
Proper motions of 650 bright B-type stars. Not Available

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观测天体数据

星座:	時鐘座
右阿森松:	03^h52^m39.78^s
赤纬:	-44Â°56'48.6"
视星:	7.598
距离:	225.734 天文距离
右阿森松适当运动:	-19.5
赤纬适当运动:	-11.7
B-T magnitude:	9.264
V-T magnitude:	7.736

目录:

适当名称
HD 1989	HD 24576
TYCHO-2 2000	TYC 7576-2120-1
USNO-A2.0	USNO-A2 0450-01325255
HIP	HIP 18139

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