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The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.

Visual multiples. VIII - 1000 MK types
A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.

Catalog of multiple Trapezium type systems
Not Available

The proper motions of Struve double stars
The proper motions of the components of 103 Struve double stars fromMuller's list of neglected stars and of 15 other systems were measuredrelative to sets of reference stars, for the primary purpose ofdistinguishing physical from optical pairs. A by-product of thisinvestigation is a list of measured position angles and distances ofthese objects, at two epochs each.

On the relationship between the apparent magnitudes given in several catalogues and the UBV system.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974A&AS...15..215O&db_key=AST

Photometric studies of northern galactic clusters. I. Roslund No. 5.
Abstract image available at:http://adsabs.harvard.edu/abs/1971AJ.....76..464L

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Dades d'Observació i Astrometria

Constel·lació:Cygnus
Ascensió Recta:20h07m57.93s
Declinació:+32°35'10.8"
Magnitud Aparent:7.947
Distancia:1052.632 parsecs
Moviment propi RA:1.3
Moviment propi Dec:-3.1
B-T magnitude:7.974
V-T magnitude:7.95

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 191292
TYCHO-2 2000TYC 2675-2113-1
USNO-A2.0USNO-A2 1200-14519504
HIPHIP 99168
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