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HD 12543


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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.

Measurements of double stars 1993.67 - 1998.13
624 Micrometer Measurements of 224 pairs with a 32.5 cm Cassegrain, 719Measurements of 310 double stars with a 360 mm Newtonian are given.Tables 1 to 4 are available in electronic form only at the CDS130.79.128.5 or via http://cdsweb.u-strasbg.fr/Abstract.html

A. de Sitter's photographic polar photometry revisited; some remarks on photographic photometry with objective gratings
Not Available

On the inclination of rotation axes in visual binaries.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974ApJ...190..331W&db_key=AST

Micrometer Measures of Double Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJS....6....1K&db_key=AST

Photographic magnitudes of stars brighter than 7m.75 between +75° and +80° declination (Errata: 11 270)
Not Available

Photo-electric observations of RR Lyrae (Errata: 11 270)
Not Available

Yerkes actinometry. Zone +73deg to +90deg.
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Observation and Astrometry data

Constellation:Cepheus
Right ascension:02h10m29.96s
Declination:+81°28'55.1"
Apparent magnitude:6.971
Distance:191.571 parsecs
Proper motion RA:34.1
Proper motion Dec:-8.3
B-T magnitude:7.193
V-T magnitude:6.99

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 12543
TYCHO-2 2000TYC 4507-1043-1
USNO-A2.0USNO-A2 1650-00439576
HIPHIP 10144
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