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HD 72280

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Delta a and Stroemgren photometry of stars in the Renson-catalogue of AP and AM stars We have observed 131 stars of \cite[Renson's (1991)]{re91} catalogue ofAp and Am stars both in the Stroemgren & Maitzen's (1976) Delta asystem as a contribution to the photometric studies of the lambda 5200broad band flux depression feature in chemically peculiar stars. Withfew exceptions the probability grouping of Renson for membership in theCP2 group of peculiar stars is nicely reflected by peculiar values ofDelta a. Comparison with already available Delta a values yieldsslightly larger values due to a minor shift in the filter g_1 samplingthe depression. As found by \cite[Maitzen & Vogt (1983)]{ma83} theGeneva system peculiarity parameters correlate well with Delta a. Thisstudy demonstrates the advantageous performance of a photoelectricphotometer with a rapidly rotating filter wheel moving in a stop and gomode. Tables 3 and 4 are also available in electronic form at the CDSvia anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
The Equatorial Coordinates of Components of Triple Stars from the Astrometric Satellite HIPPARCOS Input Catalogue - Part Two - the Results of Statistical Study of Data from Aitken's Catalogue of Double Stars / ADS Not Available
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.
Positions moyennes et mouvements propres de 355 etoiles DU GC de la zone de declinaison +33 +36. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976A&AS...26..219M&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Lince
Ascensione retta:	08^h33^m10.44^s
Declinazione:	+33Â°25'52.8"
Magnitudine apparente:	7.803
Distanza:	145.349 parsec
Moto proprio RA:	8.5
Moto proprio Dec:	2.1
B-T magnitude:	7.851
V-T magnitude:	7.807

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 72280
TYCHO-2 2000	TYC 2486-2268-1
USNO-A2.0	USNO-A2 1200-06077296
HIP	HIP 41960

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