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HD 58784

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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.
Catalog of O-B stars observed with Tokyo Meridian Circle A catalog of the O-B stars, selected from 'Blaauw-Parenago' list andRubin's catalog, has been compiled on the FK4 system by the observationsmade with Gautier 8-inch Meridian Circle at the Tokyo AstronomicalObservatory during the period, 1971 to 1979. It contains 1059 stars andwas compiled for the future establishment of high precision propermotions of O-B stars.
A catalog of ultraviolet interstellar extinction excesses for 1415 stars Ultraviolet interstellar extinction excesses are presented for 1415stars with spectral types B7 and earlier. The excesses with respect to Vare derived from Astronomical Netherlands Satellite (ANS) 5-channel UVphotometry at central wavelengths of approximately 1550, 1800, 2500, and3300 A. A measure of the excess extinction in the 2200-A extinction bumpis also given. The data are valuable for investigating the systematicsof peculiar interstellar extinction and for studying the character of UVinterstellar extinction in the general direction of stars for which theextinction-curve shape is unknown.
H-beta photometry of northern intermediate galactic latitude early-type stars and galactic structure away from the plane Photoelectric H-beta photometry is presented for 255 early-type stars atintermediate galactic latitudes. Absolute magnitudes and distances arederived for the more luminous stars. Those with visual magnitudes lessthan or equal to 2.5 and at distances of up to 1 kpc from the galacticplane may follow the spiral structure in the plane.
UBV photometry and MK spectral classification of northern early-type stars at intermediate galactic latitudes Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977MNRAS.180..691H&db_key=AST
A general catalogue of cool carbon stars Not Available
Spectral Classifications of 239 Early-Type Stars Not Available
Photoelectric Three Colour Magnitudes for Southern Stars Not Available
Troisième catalogue de l'Observatoire de Besançon comprenant 764 étoiles réduites à 1950, 0 sans mouvement propre et 326 étoiles FK3 pour l'époque moyenne d'observation Not Available
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Kucuk Kopek
Sað Açýklýk:	07^h27^m16.28^s
Yükselim:	+02Â°27'53.0"
Görünürdeki Parlaklýk:	8.563
Uzaklýk:	5555.556 parsek
özdevim Sað Açýklýk:	-5.5
özdevim Yükselim:	1
B-T magnitude:	8.459
V-T magnitude:	8.555

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 58784
TYCHO-2 2000	TYC 169-261-1
USNO-A2.0	USNO-A2 0900-04954542
HIP	HIP 36196

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