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TYC 1443-2663-1


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Photovisual Magnitude Differences for 169 Double Stars
Photovisual magnitude differences determined from multi-exposurephotographic plates for 169 double stars are presented. The separationsrange from 1.5'' to 113\arcsec, and the photovisual magnitudedifferences vary from 0.03 to 6.14 magnitudes. The internal mean errorof a single magnitude difference estimate is +/-0.064 magnitude.

Common proper motion stars in the AGK 3
A search was made of common-proper-motion (CPM) systems among AGK 3stars. The selection of physical systems was based upon the ratiobetween the angular separation (rho) and the proper motion (mu); the CPMstars found are presented in two tables. Table I lists systems withrho/mu less than 1000 years. It contains 326 entries, and the proportionof optical pairs is estimated to be 1 percent. Table II lists systemswith rho/mu in the range 1000 to 3500 years; it contains 113 systems,but only 60 percent of them are physical. Nevertheless, these systemsoften have separations larger than 10,000 AU and are the mostinteresting for the study of the tail of the distribution function ofthe semimajor axes.

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Observation and Astrometry data

Constellation:Leo
Right ascension:11h56m01.70s
Declination:+21°58'57.9"
Apparent magnitude:9.466
Proper motion RA:-60.5
Proper motion Dec:-5.8
B-T magnitude:10.225
V-T magnitude:9.529

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 1443-2663-1
USNO-A2.0USNO-A2 1050-06612900
HIPHIP 58192

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