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HD 222561 (104 Aqr B)

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Variations of AP stars in the Geneva system The photometric behaviour of 21 Ap stars has been analyzed fromobservations obtained in the Geneva system. Variability has beendetected for 9 Ap stars, as well as for a star which initially was acomparison star. Preliminary values for the periods are presented aswell as an analytical description of the light curves. based onobservations made at the Swiss telescope of the European SouthernObservatory, La Silla, Chile. Complete Table 4 is available inelectronic form at the CDS via anonymous ftp 130.79.128.5 orhttp://cdsweb.u-strasbg.fr/Abstract.html and full figures are accessibleon the on-line version of the paper.
Catalogue et bibliographie des étoiles A à spectre particulier - Deuxième supplément Not Available
A study of visual binaries having primaries above the main sequence. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960AJ.....65...60S&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Acquario
Ascensione retta:	23^h41^m46.38^s
Declinazione:	-17Â°47'00.7"
Magnitudine apparente:	8.543
Distanza:	279.33 parsec
Moto proprio RA:	-27.9
Moto proprio Dec:	-30.4
B-T magnitude:	8.726
V-T magnitude:	8.559

Cataloghi e designazioni:

Nomi esatti	104 Aqr B (Edit)
HD 1989	HD 222561
TYCHO-2 2000	TYC 6407-93-1
USNO-A2.0	USNO-A2 0675-37493533
HIP	HIP 116904

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