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TYC 5381-436-1


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Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 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

Photometric study of the open cluster NGC2323
UBV photoelectric photometry for 175 stars in the field of the southernopen cluster NGC2323, supplemented by DDO photometry of 5 probablegiants, is presented. The analysis of the photometric data yields 109probable members; one of them being a red giant, and 3 possible members.The reddening across the cluster is slightly variable and the mean valueE(B-V)=0.25. The apparent cluster distance modulus is 10.62,corresponding to a distance of 940 pc. The age, determined by fittingisochrones with core overshooting, turns out to be 100+/- 20 Myr. Otherfundamental cluster parameters are also determined. NGC2323 appears notto be physically connected to the CMa OB1 association. Based onobservations made at Cerro Tololo Inter-American Observatory (Chile) andat Las Campanas Observatory (Chile).

Distance Moduli of Open Clusters.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1965ApJS...12..215H&db_key=AST

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Observation and Astrometry data

Constellation:Μονόκερως
Right ascension:07h02m54.91s
Declination:-08°17'56.7"
Apparent magnitude:9.314
Proper motion RA:-1.2
Proper motion Dec:0.1
B-T magnitude:9.449
V-T magnitude:9.326

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 5381-436-1
USNO-A2.0USNO-A2 0750-03343624
HIPHIP 33972

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