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HD 252321

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UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.
Empirical temperature calibrations for early-type stars Three temperature calibrations of suitable photometric quantities havebeen derived for O and B stars. A sample of 120 stars with reliableT(eff.) determinations has been used for establishing each calibration.The different calibrations have been critically discussed and compared.Temperature determinations for 1009 program stars have been obtainedwith an accuracy of the order of 10 percent.
The stellar distribution in the galactic anticenter. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1967AJ.....72.1199M&db_key=AST
- and Broad-Band Photometry of Red Stars. Northern Giants Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1967ApJS...14..307E&db_key=AST
A Study of the i Geminorum Association. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960ApJ...132..361H&db_key=AST
Studies in Galactic STRUCTURE.II.LUMINOSITY Classification for 1270 Blue Giant Stars. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJS....2...41M&db_key=AST
The Association i Geminorum. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJ...121...24C&db_key=AST

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Наблюдательные данные и астрометрия

Созвездие:	Близнецы
Прямое восхождение:	06^h09^m12.29^s
Склонение:	+23Â°53'24.3"
Видимая звёздная величина:	9.349
Собственное движение RA:	1.8
Собственное движение Dec:	-3
B-T magnitude:	9.324
V-T magnitude:	9.347

Каталоги и обозначения:

Собственные имена	(Edit)
HD 1989	HD 252321
TYCHO-2 2000	TYC 1877-710-1
USNO-A2.0	USNO-A2 1125-03476082

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