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HD 197894


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The description of the first version of the General Compiled Catalogueof Absolute Proper Motions (GPM1) for a sample of HIPPARCOS stars,derived with respect to galaxies within the plan called Catalogue ofFaint Stars (KSZ, Deutch 1952), is presented. The principal aim of theGPM1 construction was to provide absolute proper motions of stars todetermine the rotation of the HIPPARCOS system. The GPM1 cataloguecontains 977 HIPPARCOS Input Catalogue stars with V magnitudes $5^m -11^m in 180 fields north of -25 degrees of declination. The accuracy ofthe proper motions is 8 mas/yr (milliarcseconds per year). Comparison ofproper motions of GPM1 with those of the PPM and ACRS was performed andanalyzed with respect to systematic errors caused by spurious rotationof the FK5 system. The standard errors show that the rotation may bedetermined with an accuracy better than 1 mas/yr. Catalog is onlyavailable in electronic form at the CDS via anonymous ftpcdsarc.u-strasbg.fr or ftp 130.79.128.5.

Spectral types for early-type stars observed by SKYLAB
MK spectral types are presented for 246 early-type stars observed withthe S-019 ultraviolet stellar astronomy experiment on Skylab. K-linetypes are also given where applicable, and various peculiar stars areidentified. The peculiar stars include five silicon stars, a shell star,a helium-rich star, a silicon-strontium star, a chromium-europium star,and two marginal metallic-line stars.

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Dades d'Observació i Astrometria

Constel·lació:Cepheus
Ascensió Recta:20h42m48.46s
Declinació:+66°19'36.2"
Magnitud Aparent:7.002
Distancia:262.467 parsecs
Moviment propi RA:14.2
Moviment propi Dec:2.2
B-T magnitude:7.029
V-T magnitude:7.005

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 197894
TYCHO-2 2000TYC 4258-1245-1
USNO-A2.0USNO-A2 1500-07567586
HIPHIP 102224

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