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HD 34018


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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

Miscellaneous spectroscopic notes
Results of slit-spectrograph observations are reported for approximately260 stars. The data presented range from recognition of many new Ap, Am,and other unusual stars to H-alpha observations of early-typesupergiants and Be stars. The material discussed was obtained over thepast 40 years at a number of U.S. observatories and at the DominionAstrophysical Observatory in Victoria, B.C.

Measurements of binary stars performed at Nice (Second series)
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..467M&db_key=AST

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Dades d'Observació i Astrometria

Constel·lació:Camelopardalis
Ascensió Recta:05h19m42.94s
Declinació:+67°59'47.1"
Magnitud Aparent:7.492
Distancia:207.9 parsecs
Moviment propi RA:-7.5
Moviment propi Dec:-3.9
B-T magnitude:7.853
V-T magnitude:7.522

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 34018
TYCHO-2 2000TYC 4343-540-1
USNO-A2.0USNO-A2 1575-02295473
HIPHIP 24858

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