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HD 172536


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A catalogue of eclipsing variables
A new catalogue of 6330 eclipsing variable stars is presented. Thecatalogue was developed from the General Catalogue of Variable Stars(GCVS) and its textual remarks by including recently publishedinformation about classification of 843 systems and making correspondingcorrections of GCVS data. The catalogue1 represents thelargest list of eclipsing binaries classified from observations.

The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.

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The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

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Datos observacionales y astrométricos

Constelación:Sagitario
Ascensión Recta:18h42m11.47s
Declinación:-34°02'25.1"
Magnitud Aparente:8.628
Distancia:278.552 parsecs
Movimiento Propio en Ascensión Recta:-11.6
Movimiento Propio en Declinación:-26
B-T magnitude:9.187
V-T magnitude:8.675

Catálogos y designaciones:
Nombres Propios
HD 1989HD 172536
TYCHO-2 2000TYC 7415-4484-1
USNO-A2.0USNO-A2 0525-37984644
HIPHIP 91718

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