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TYC 8475-950-1


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Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995AJ....109.2828T&db_key=AST

Uvby-beta photometry of visual double stars - Absolute magnitudes of intrinsically bright stars
Individual absolute visual magnitudes M(v) are derived for intrinsicallybright stars and evolved stars. The results are collected for 106objects believed to be members of binary systems. uvby-beta photometrywas empirically calibrated in terms of M(v) for main sequence stars andphotoelectrically determined apparent magnitudes. The derived M(v)values are not significantly different from those stated in the Wilsoncatalogue (1976). Binary systems with main sequence primaries andsecondary components off the main sequence were also investigated.Several systems in which at least one component may be in the pre-mainsequence contraction stage are pointed out. A wide variety of commentsand derived data are given individually for 136 double stars, includingmetallicities, distance moduli, and masses.

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Observation and Astrometry data

Constellation:Fluss Eridanus
Right ascension:01h38m49.67s
Declination:-53°26'22.6"
Apparent magnitude:8.443
Distance:104.603 parsecs
Proper motion RA:-9.1
Proper motion Dec:-48
B-T magnitude:9.041
V-T magnitude:8.493

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 8475-950-1
USNO-A2.0USNO-A2 0300-00498525
HIPHIP 7674

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