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TYC 3233-847-1


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MSC - a catalogue of physical multiple stars
The MSC catalogue contains data on 612 physical multiple stars ofmultiplicity 3 to 7 which are hierarchical with few exceptions. Orbitalperiods, angular separations and mass ratios are estimated for eachsub-system. Orbital elements are given when available. The catalogue canbe accessed through CDS (Strasbourg). Half of the systems are within 100pc from the Sun. The comparison of the periods of close and widesub-systems reveals that there is no preferred period ratio and allpossible combinations of periods are found. The distribution of thelogarithms of short periods is bimodal, probably due to observationalselection. In 82\% of triple stars the close sub-system is related tothe primary of a wide pair. However, the analysis of mass ratiodistribution gives some support to the idea that component masses areindependently selected from the Salpeter mass function. Orbits of wideand close sub-systems are not always coplanar, although thecorresponding orbital angular momentum vectors do show a weak tendencyof alignment. Some observational programs based on the MSC aresuggested. Tables 2 and 3 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

Mesures d'etoiles doubles faites a Nice a la lunette de 50 cm.
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Observation and Astrometry data

Constellation:Andromeda
Right ascension:23h52m49.54s
Declination:+38°41'16.2"
Apparent magnitude:9.491
Proper motion RA:-8.5
Proper motion Dec:-7.9
B-T magnitude:9.96
V-T magnitude:9.53

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 3233-847-1
USNO-A2.0USNO-A2 1275-18690023
HIPHIP 117752

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